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/*empty*/

.title{ color:black; } .item{ color:blue; }
submitted 7 years ago ago by 78cab8d8152049388b4b58a5621c5935
0 comments
picture

Nicole's Favorite Poem Collection

  • Oscar Wilde
  • Maya Angelou
  • Robert Browning
  • Tagora
  • Carl Sandburg
112
up vote 0 down vote

/*empty*/

.title{ color:black; margin:10px; } .item{ color:blue; }
submitted 7 years ago ago by 78cab8d8152049388b4b58a5621c5935
0 comments
picture

Nicole's Favorite Poem Collection

  • Oscar Wilde
  • Maya Angelou
  • Robert Browning
  • Tagora
  • Carl Sandburg
113
up vote 0 down vote

/*empty*/

.title{ color:black; margin:10px; } .item{ color:blue; }
submitted 7 years ago ago by 78cab8d8152049388b4b58a5621c5935
0 comments
picture

Nicole's Favorite Poem Collection

  • Oscar Wilde
  • Maya Angelou
  • Robert Browning
  • Tagora
  • Carl Sandburg
114
up vote 0 down vote

/*empty*/ window["reddahApi"].loadCompleted()

.title{ color:green; margin:10px; } .item{ color:blue; }
submitted 7 years ago ago by 78cab8d8152049388b4b58a5621c5935
0 comments
picture
Nicole's Favorite Poems
  • Oscar Wilde
  • Maya Angelou
  • Robert Browning
  • Tagora
  • Carl Sandburg
115
up vote 0 down vote

/** * EvEmitter v1.0.2 * Lil' event emitter * MIT License */ /* jshint unused: true, undef: true, strict: true */ (function(global, factory) { // universal module definition /* jshint strict: false */ /* globals define, module */ if (typeof define == 'function' && define.amd) { // AMD - RequireJS define(factory); } else if (typeof module == 'object' && module.exports) { // CommonJS - Browserify, Webpack module.exports = factory(); } else { // Browser globals global.EvEmitter = factory(); } }(this, function() { "use strict"; function EvEmitter() {} var proto = EvEmitter.prototype; proto.on = function(eventName, listener) { if (!eventName || !listener) { return; } // set events hash var events = this._events = this._events || {}; // set listeners array var listeners = events[eventName] = events[eventName] || []; // only add once if (listeners.indexOf(listener) == -1) { listeners.push(listener); } return this; }; proto.once = function(eventName, listener) { if (!eventName || !listener) { return; } // add event this.on(eventName, listener); // set once flag // set onceEvents hash var onceEvents = this._onceEvents = this._onceEvents || {}; // set onceListeners object var onceListeners = onceEvents[eventName] = onceEvents[eventName] || {}; // set flag onceListeners[listener] = true; return this; }; proto.off = function(eventName, listener) { var listeners = this._events && this._events[eventName]; if (!listeners || !listeners.length) { return; } var index = listeners.indexOf(listener); if (index != -1) { listeners.splice(index, 1); } return this; }; proto.emitEvent = function(eventName, args) { var listeners = this._events && this._events[eventName]; if (!listeners || !listeners.length) { return; } var i = 0; var listener = listeners[i]; args = args || []; // once stuff var onceListeners = this._onceEvents && this._onceEvents[eventName]; while (listener) { var isOnce = onceListeners && onceListeners[listener]; if (isOnce) { // remove listener // remove before trigger to prevent recursion this.off(eventName, listener); // unset once flag delete onceListeners[listener]; } // trigger listener listener.apply(this, args); // get next listener i += isOnce ? 0 : 1; listener = listeners[i]; } return this; }; return EvEmitter; })); /*! * Unipointer v2.1.0 * base class for doing one thing with pointer event * MIT license */ /*jshint browser: true, undef: true, unused: true, strict: true */ (function(window, factory) { // universal module definition /* jshint strict: false */ /*global define, module, require */ if (typeof define == 'function' && define.amd) { // AMD define([ 'ev-emitter/ev-emitter' ], function(EvEmitter) { return factory(window, EvEmitter); }); } else if (typeof module == 'object' && module.exports) { // CommonJS module.exports = factory( window, require('ev-emitter') ); } else { // browser global window.Unipointer = factory( window, window.EvEmitter ); } }(window, function factory(window, EvEmitter) { 'use strict'; function noop() {} function Unipointer() {} // inherit EvEmitter var proto = Unipointer.prototype = Object.create(EvEmitter.prototype); proto.bindStartEvent = function(elem) { this._bindStartEvent(elem, true); }; proto.unbindStartEvent = function(elem) { this._bindStartEvent(elem, false); }; /** * works as unbinder, as you can ._bindStart( false ) to unbind * @param {Boolean} isBind - will unbind if falsey */ proto._bindStartEvent = function(elem, isBind) { // munge isBind, default to true isBind = isBind === undefined ? true : !!isBind; var bindMethod = isBind ? 'addEventListener' : 'removeEventListener'; if (window.navigator.pointerEnabled) { // W3C Pointer Events, IE11. See https://coderwall.com/p/mfreca elem[bindMethod]('pointerdown', this); } else if (window.navigator.msPointerEnabled) { // IE10 Pointer Events elem[bindMethod]('MSPointerDown', this); } else { // listen for both, for devices like Chrome Pixel elem[bindMethod]('mousedown', this); elem[bindMethod]('touchstart', this); } }; // trigger handler methods for events proto.handleEvent = function(event) { var method = 'on' + event.type; if (this[method]) { this[method](event); } }; // returns the touch that we're keeping track of proto.getTouch = function(touches) { for (var i = 0; i < touches.length; i++) { var touch = touches[i]; if (touch.identifier == this.pointerIdentifier) { return touch; } } }; // ----- start event ----- // proto.onmousedown = function(event) { // dismiss clicks from right or middle buttons var button = event.button; if (button && (button !== 0 && button !== 1)) { return; } this._pointerDown(event, event); }; proto.ontouchstart = function(event) { this._pointerDown(event, event.changedTouches[0]); }; proto.onMSPointerDown = proto.onpointerdown = function(event) { this._pointerDown(event, event); }; /** * pointer start * @param {Event} event * @param {Event or Touch} pointer */ proto._pointerDown = function(event, pointer) { // dismiss other pointers if (this.isPointerDown) { return; } this.isPointerDown = true; // save pointer identifier to match up touch events this.pointerIdentifier = pointer.pointerId !== undefined ? // pointerId for pointer events, touch.indentifier for touch events pointer.pointerId : pointer.identifier; this.pointerDown(event, pointer); }; proto.pointerDown = function(event, pointer) { this._bindPostStartEvents(event); this.emitEvent('pointerDown', [event, pointer]); }; // hash of events to be bound after start event var postStartEvents = { mousedown: ['mousemove', 'mouseup'], touchstart: ['touchmove', 'touchend', 'touchcancel'], pointerdown: ['pointermove', 'pointerup', 'pointercancel'], MSPointerDown: ['MSPointerMove', 'MSPointerUp', 'MSPointerCancel'] }; proto._bindPostStartEvents = function(event) { if (!event) { return; } // get proper events to match start event var events = postStartEvents[event.type]; // bind events to node events.forEach(function(eventName) { window.addEventListener(eventName, this); }, this); // save these arguments this._boundPointerEvents = events; }; proto._unbindPostStartEvents = function() { // check for _boundEvents, in case dragEnd triggered twice (old IE8 bug) if (!this._boundPointerEvents) { return; } this._boundPointerEvents.forEach(function(eventName) { window.removeEventListener(eventName, this); }, this); delete this._boundPointerEvents; }; // ----- move event ----- // proto.onmousemove = function(event) { this._pointerMove(event, event); }; proto.onMSPointerMove = proto.onpointermove = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerMove(event, event); } }; proto.ontouchmove = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerMove(event, touch); } }; /** * pointer move * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerMove = function(event, pointer) { this.pointerMove(event, pointer); }; // public proto.pointerMove = function(event, pointer) { this.emitEvent('pointerMove', [event, pointer]); }; // ----- end event ----- // proto.onmouseup = function(event) { this._pointerUp(event, event); }; proto.onMSPointerUp = proto.onpointerup = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerUp(event, event); } }; proto.ontouchend = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerUp(event, touch); } }; /** * pointer up * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerUp = function(event, pointer) { this._pointerDone(); this.pointerUp(event, pointer); }; // public proto.pointerUp = function(event, pointer) { this.emitEvent('pointerUp', [event, pointer]); }; // ----- pointer done ----- // // triggered on pointer up & pointer cancel proto._pointerDone = function() { // reset properties this.isPointerDown = false; delete this.pointerIdentifier; // remove events this._unbindPostStartEvents(); this.pointerDone(); }; proto.pointerDone = noop; // ----- pointer cancel ----- // proto.onMSPointerCancel = proto.onpointercancel = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerCancel(event, event); } }; proto.ontouchcancel = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerCancel(event, touch); } }; /** * pointer cancel * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerCancel = function(event, pointer) { this._pointerDone(); this.pointerCancel(event, pointer); }; // public proto.pointerCancel = function(event, pointer) { this.emitEvent('pointerCancel', [event, pointer]); }; // ----- ----- // // utility function for getting x/y coords from event Unipointer.getPointerPoint = function(pointer) { return { x: pointer.pageX, y: pointer.pageY }; }; // ----- ----- // return Unipointer; })); function FreeSegment(a, b) { this.type = 'FreeSegment'; this.a = a; this.b = b; // orientations this.noon = { a: a, b: b }; this.three = { a: { x: -a.y, y: a.x }, b: { x: -b.y, y: b.x } }; this.six = { a: { x: -a.x, y: -a.y }, b: { x: -b.x, y: -b.y } }; this.nine = { a: { x: a.y, y: -a.x }, b: { x: b.y, y: -b.x } }; } var proto = FreeSegment.prototype; proto.connect = function(maze) { this.connectOrientation(maze, 'noon'); this.connectOrientation(maze, 'three'); this.connectOrientation(maze, 'six'); this.connectOrientation(maze, 'nine'); }; proto.connectOrientation = function(maze, orientation) { var line = this[orientation]; maze.connect(this, orientation, line.a); maze.connect(this, orientation, line.b); }; proto.render = function(ctx, center, gridSize) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.b.x * gridSize; var by = this.b.y * gridSize; ctx.strokeStyle = 'hsla(200, 80%, 50%, 0.7)'; ctx.lineWidth = gridSize * 0.6; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); }; function FixedSegment(a, b) { this.type = 'FixedSegment'; this.a = a; this.b = b; // orientations this.noon = { a: a, b: b }; this.three = { a: a, b: b }; this.six = { a: a, b: b }; this.nine = { a: a, b: b }; } var proto = FixedSegment.prototype; proto.connect = function(maze) { maze.connect(this, 'noon', this.a); maze.connect(this, 'noon', this.b); maze.connect(this, 'three', this.a); maze.connect(this, 'three', this.b); maze.connect(this, 'six', this.a); maze.connect(this, 'six', this.b); maze.connect(this, 'nine', this.a); maze.connect(this, 'nine', this.b); }; proto.render = function(ctx, center, gridSize) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.b.x * gridSize; var by = this.b.y * gridSize; ctx.strokeStyle = 'hsla(30, 100%, 40%, 0.6)'; ctx.lineWidth = gridSize * 0.8; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); }; function PivotSegment(a, b) { this.type = 'FreeSegment'; this.a = a; this.b = b; var dx = b.x - a.x; var dy = b.y - a.y; this.delta = { x: dx, y: dy }; // orientations this.noon = { a: a, b: b }; this.three = { a: { x: -a.y, y: a.x }, b: { x: -a.y + dx, y: a.x + dy } }; this.six = { a: { x: -a.x, y: -a.y }, b: { x: -a.x + dx, y: -a.y + dy } }; this.nine = { a: { x: a.y, y: -a.x }, b: { x: a.y + dx, y: -a.x + dy } }; } var proto = PivotSegment.prototype; proto.connect = function(maze) { this.connectOrientation(maze, 'noon'); this.connectOrientation(maze, 'three'); this.connectOrientation(maze, 'six'); this.connectOrientation(maze, 'nine'); }; proto.connectOrientation = function(maze, orientation) { var line = this[orientation]; if (maze.getIsPegOut(line.a) || maze.getIsPegOut(line.b)) { return; } maze.connect(this, orientation, line.a); maze.connect(this, orientation, line.b); }; proto.render = function(ctx, center, gridSize, mazeAngle) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.delta.x * gridSize; var by = this.delta.y * gridSize; ctx.save(); ctx.translate(ax, ay); ctx.rotate(-mazeAngle); var color = 'hsla(150, 100%, 35%, 0.7)' // line ctx.strokeStyle = color; ctx.lineWidth = gridSize * 0.4; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(0, 0); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); // circle ctx.fillStyle = color; ctx.beginPath(); ctx.arc(0, 0, gridSize * 0.4, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); ctx.restore(); }; // rotational physics model var TAU = Math.PI * 2; function FlyWheel(props) { this.angle = 0; this.friction = 0.95; this.velocity = 0; for (var prop in props) { this[prop] = props[prop]; } } var proto = FlyWheel.prototype; proto.integrate = function() { this.velocity *= this.friction; this.angle += this.velocity; this.normalizeAngle(); }; proto.applyForce = function(force) { this.velocity += force; }; proto.normalizeAngle = function() { this.angle = ((this.angle % TAU) + TAU) % TAU; }; proto.setAngle = function(theta) { var velo = theta - this.angle; if (velo > TAU / 2) { velo -= TAU; } else if (velo < -TAU / 2) { velo += TAU; } var force = velo - this.velocity; this.applyForce(force); }; var cub = { offset: { x: 0, y: 0 }, }; var pegOrienter = { noon: function(peg) { return peg; }, three: function(peg) { return { x: peg.y, y: -peg.x }; }, six: function(peg) { return { x: -peg.x, y: -peg.y }; }, nine: function(peg) { return { x: -peg.y, y: peg.x }; }, }; cub.setPeg = function(peg, orientation) { peg = pegOrienter[orientation](peg); this.peg = peg; this.noon = { x: peg.x, y: peg.y }; this.three = { x: -peg.y, y: peg.x }; this.six = { x: -peg.x, y: -peg.y }; this.nine = { x: peg.y, y: -peg.x }; }; var offsetOrienter = { noon: function(offset) { return offset; }, three: function(offset) { // flip y because its rendering return { x: offset.y, y: -offset.x }; }, six: function(offset) { return { x: -offset.x, y: -offset.y }; }, nine: function(offset) { // flip y because its rendering return { x: -offset.y, y: offset.x }; }, }; cub.setOffset = function(offset, orientation) { this.offset = offsetOrienter[orientation](offset); }; // ----- render ----- // cub.render = function(ctx, mazeCenter, gridSize, angle, isHovered) { function circle(x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); } // function eye( direction ) { // ctx.beginPath(); // ctx.arc( gridSize * 0.25 * direction, gridSize * 0.05, gridSize * 0.1, Math.PI, Math.PI*2 ); // ctx.fill(); // ctx.closePath(); // } var x = this.peg.x * gridSize + this.offset.x; var y = this.peg.y * gridSize + this.offset.y; ctx.save(); ctx.translate(mazeCenter.x, mazeCenter.y); ctx.rotate(angle); ctx.translate(x, y); ctx.rotate(-angle); ctx.fillStyle = 'hsla(330, 100%, 40%, 1)'; var scale = isHovered ? 1.15 : 1; ctx.scale(scale, scale); circle(0, 0, gridSize * 0.6); circle(gridSize * -0.45, gridSize * -0.35, gridSize * 0.3); circle(gridSize * 0.45, gridSize * -0.35, gridSize * 0.3); // // eyes // ctx.fillStyle = 'hsla(0, 0%, 0%, 0.8)'; // eye( 1 ); // eye( -1 ); // // nose // ctx.beginPath(); // ctx.arc( 0, gridSize * 0.15, gridSize * 0.1, 0, Math.PI ); // ctx.fill(); // ctx.closePath(); ctx.restore(); }; /* globals FlyWheel, FreeSegment, FixedSegment, PivotSegment, cub */ function Maze() { this.freeSegments = []; this.fixedSegments = []; this.pivotSegments = []; this.flyWheel = new FlyWheel({ friction: 0.8 }); this.connections = {}; } var proto = Maze.prototype; proto.loadText = function(text) { // separate --- sections, YAML front matter first, maze source second; var sections = text.split('---\n'); // YAML front matter var frontMatter = {}; if (sections.length > 1) { var frontMatter = getFrontMatter(sections[0]); } // set instruction var instructElem = document.querySelector('.instruction'); instructElem.innerHTML = frontMatter.instruction || ''; var mazeSrc = sections[sections.length - 1]; var lines = mazeSrc.split('\n'); var gridCount = this.gridCount = lines[0].length; var gridMax = this.gridMax = (gridCount - 1) / 2; for (var i = 0; i < lines.length; i++) { var line = lines[i]; var chars = line.split(''); for (var j = 0; j < chars.length; j++) { var character = chars[j]; var pegX = j - gridMax; var pegY = i - gridMax; var parseMethod = 'parse' + character; if (this[parseMethod]) { this[parseMethod](pegX, pegY); } } } }; function getFrontMatter(text) { if (!text) { return; } var frontMatter = {}; text.split('\n').forEach(function(line) { if (!line) { return; } var parts = line.split(':'); var key = parts[0].trim(); var value = parts[1].trim(); if (value === 'true') { value = true; // boolean true } else if (value === 'false') { value = false; // boolean false } else if (value.match(/$\d+(\.\d+)?^/)) { value = parseFloat(value, 10); // number } else if (value.match(/$\d+\.\d+^/)) { value = parseFloat(value); // float } frontMatter[key] = value; }); return frontMatter; } // -------------------------- parsers -------------------------- // // horizontal free segment proto['parse-'] = proto.addFreeHorizSegment = function(pegX, pegY) { var segment = getHorizSegment(pegX, pegY, FreeSegment); segment.connect(this); this.freeSegments.push(segment); }; // vertical free segment proto['parse|'] = proto.addFreeVertSegment = function(pegX, pegY) { var segment = getVertSegment(pegX, pegY, FreeSegment); segment.connect(this); this.freeSegments.push(segment); }; // horizontal fixed segment proto['parse='] = proto.addFixedHorizSegment = function(pegX, pegY) { var segment = getHorizSegment(pegX, pegY, FixedSegment); segment.connect(this); this.fixedSegments.push(segment); }; // vertical fixed segment proto['parse!'] = proto.addFixedVertSegment = function(pegX, pegY) { var segment = getVertSegment(pegX, pegY, FixedSegment); segment.connect(this); this.fixedSegments.push(segment); }; function getHorizSegment(pegX, pegY, Segment) { var a = { x: pegX + 1, y: pegY }; var b = { x: pegX - 1, y: pegY }; return new Segment(a, b); } function getVertSegment(pegX, pegY, Segment) { var a = { x: pegX, y: pegY + 1 }; var b = { x: pegX, y: pegY - 1 }; return new Segment(a, b); } // pivot up segment proto['parse^'] = function(pegX, pegY) { var a = { x: pegX, y: pegY + 1 }; var b = { x: pegX, y: pegY - 1 }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot down segment proto.parsev = proto.addPivotDownSegment = function(pegX, pegY) { var a = { x: pegX, y: pegY - 1 }; var b = { x: pegX, y: pegY + 1 }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot left segment proto['parse<'] = proto.addPivotLeftSegment = function(pegX, pegY) { var a = { x: pegX + 1, y: pegY }; var b = { x: pegX - 1, y: pegY }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot right segment proto['parse>'] = proto.addPivotRightSegment = function(pegX, pegY) { var a = { x: pegX - 1, y: pegY }; var b = { x: pegX + 1, y: pegY }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // free & fixed horizontal proto['parse#'] = function(pegX, pegY) { this.addFreeHorizSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // free & fixed vertical proto.parse$ = function(pegX, pegY) { this.addFreeVertSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot up + fixed vertical proto.parseI = function(pegX, pegY) { this.addPivotUpSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot left + fixed horizontal proto.parseJ = function(pegX, pegY) { this.addPivotLeftSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // pivot down + fixed vertical proto.parseK = function(pegX, pegY) { this.addPivotDownSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot right + fixed horizontal proto.parseL = function(pegX, pegY) { this.addPivotRightSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // pivot up + free vertical proto.parseW = function(pegX, pegY) { this.addPivotUpSegment(pegX, pegY); this.addFreeVertSegment(pegX, pegY); }; // pivot left + free horizontal proto.parseA = function(pegX, pegY) { this.addPivotLeftSegment(pegX, pegY); this.addFreeHorizSegment(pegX, pegY); }; // pivot down + free vertical proto.parseS = function(pegX, pegY) { this.addPivotDownSegment(pegX, pegY); this.addFreeVertSegment(pegX, pegY); }; // pivot right + free horizontal proto.parseD = function(pegX, pegY) { this.addPivotRightSegment(pegX, pegY); this.addFreeHorizSegment(pegX, pegY); }; // start position proto['parse@'] = function(pegX, pegY) { this.startPosition = { x: pegX, y: pegY }; cub.setPeg(this.startPosition, 'noon'); }; // goal position proto['parse*'] = function(pegX, pegY) { this.goalPosition = { x: pegX, y: pegY }; }; // -------------------------- -------------------------- // proto.updateItemGroups = function() { var itemGroups = {}; this.items.forEach(function(item) { if (itemGroups[item.type] === undefined) { itemGroups[item.type] = []; } itemGroups[item.type].push(item); }); this.itemGroups = itemGroups; }; proto.connect = function(segment, orientation, position) { // flatten the key var key = orientation + ':' + position.x + ',' + position.y; var connection = this.connections[key]; // create connections array if not already there if (!connection) { connection = this.connections[key] = []; } if (connection.indexOf(segment) == -1) { connection.push(segment); } }; proto.getIsPegOut = function(peg) { return Math.abs(peg.x) > this.gridMax || Math.abs(peg.y) > this.gridMax; }; // -------------------------- -------------------------- // proto.update = function() { this.flyWheel.integrate(); var angle = this.flyWheel.angle; if (angle < TAU / 8) { this.orientation = 'noon'; } else if (angle < TAU * 3 / 8) { this.orientation = 'three'; } else if (angle < TAU * 5 / 8) { this.orientation = 'six'; } else if (angle < TAU * 7 / 8) { this.orientation = 'nine'; } else { this.orientation = 'noon'; } }; proto.attractAlignFlyWheel = function() { // attract towards var angle = this.flyWheel.angle; var target; if (angle < TAU / 8) { target = 0; } else if (angle < TAU * 3 / 8) { target = TAU / 4; } else if (angle < TAU * 5 / 8) { target = TAU / 2; } else if (angle < TAU * 7 / 8) { target = TAU * 3 / 4; } else { target = TAU; } var attraction = (target - angle) * 0.03; this.flyWheel.applyForce(attraction); }; var TAU = Math.PI * 2; var orientationAngles = { noon: 0, three: TAU / 4, six: TAU / 2, nine: TAU * 3 / 4 }; proto.render = function(ctx, center, gridSize, angle) { var orientationAngle = orientationAngles[angle]; var gridMax = this.gridMax; angle = orientationAngle !== undefined ? orientationAngle : angle || 0; ctx.save(); ctx.translate(center.x, center.y); // fixed segments this.fixedSegments.forEach(function(item) { item.render(ctx, center, gridSize); }); // rotation ctx.rotate(angle); ctx.lineWidth = gridSize * 0.2; ctx.lineCap = 'round'; ctx.lineJoin = 'round'; // axle ctx.lineWidth = gridSize * 0.2; ctx.strokeStyle = 'hsla(0, 0%, 50%, 0.2)'; // strokeCircle( ctx, 0, 0, gridSize/2 ); ctx.save(); ctx.rotate(Math.PI / 4); ctx.strokeRect(-gridSize / 5, -gridSize / 5, gridSize * 2 / 5, gridSize * 2 / 5); ctx.restore(); // start position ctx.strokeStyle = 'hsla(330, 100%, 50%, 0.3)'; ctx.lineWidth = gridSize * 0.15; var startX = this.startPosition.x * gridSize; var startY = this.startPosition.y * gridSize; strokeCircle(ctx, startX, startY, gridSize * 0.5); // pegs for (var pegY = -gridMax; pegY <= gridMax; pegY += 2) { for (var pegX = -gridMax; pegX <= gridMax; pegX += 2) { var pegXX = pegX * gridSize; var pegYY = pegY * gridSize; ctx.fillStyle = 'hsla(0, 0%, 50%, 0.6)'; fillCircle(ctx, pegXX, pegYY, gridSize * 0.15); } } // free segments this.freeSegments.forEach(function(segment) { segment.render(ctx, center, gridSize); }); // pivot segments this.pivotSegments.forEach(function(segment) { segment.render(ctx, center, gridSize, angle); }); // goal position var goalX = this.goalPosition.x * gridSize; var goalY = this.goalPosition.y * gridSize; ctx.lineWidth = gridSize * 0.3; ctx.fillStyle = 'hsla(50, 100%, 50%, 1)'; ctx.strokeStyle = 'hsla(50, 100%, 50%, 1)'; renderGoal(ctx, goalX, goalY, angle, gridSize * 0.6, gridSize * 0.3); ctx.restore(); }; function fillCircle(ctx, x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); } function strokeCircle(ctx, x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.stroke(); ctx.closePath(); } function renderGoal(ctx, x, y, mazeAngle, radiusA, radiusB) { ctx.save(); ctx.translate(x, y); ctx.rotate(-mazeAngle); ctx.beginPath(); for (var i = 0; i < 11; i++) { var theta = Math.PI * 2 * i / 10 + Math.PI / 2; var radius = i % 2 ? radiusA : radiusB; var dx = Math.cos(theta) * radius; var dy = Math.sin(theta) * radius; ctx[i ? 'lineTo' : 'moveTo'](dx, dy); } ctx.fill(); ctx.stroke(); ctx.closePath(); ctx.restore(); } function WinAnimation(x, y) { this.x = x; this.y = y; this.startTime = new Date(); this.isPlaying = true; } // length of animation in milliseconds var duration = 1000; var proto = WinAnimation.prototype; proto.update = function() { if (!this.isPlaying) { return; } this.t = ((new Date()) - this.startTime) / duration; this.isPlaying = this.t <= 1; }; proto.render = function(ctx) { if (!this.isPlaying) { return; } ctx.save(); ctx.translate(this.x, this.y); // big burst this.renderBurst(ctx); // small burst ctx.save(); ctx.scale(0.5, -0.5); this.renderBurst(ctx); ctx.restore(); ctx.restore(); }; proto.renderBurst = function(ctx) { var t = this.t; var dt = 1 - t; var easeT = 1 - dt * dt * dt * dt * dt * dt * dt * dt; var dy = easeT * -100; // scale math var st = 2 - this.t * 2; var scale = (1 - t * t * t) * 1.5; var spin = Math.PI * 1 * t * t * t; for (var i = 0; i < 5; i++) { ctx.save(); ctx.rotate(Math.PI * 2 / 5 * i); ctx.translate(0, dy); ctx.scale(scale, scale); ctx.rotate(spin); renderStar(ctx); ctx.restore(); } }; function renderStar(ctx) { ctx.lineWidth = 8; ctx.lineJoin = 'round'; ctx.lineCap = 'round'; ctx.fillStyle = 'hsla(50, 100%, 50%, 1)'; ctx.strokeStyle = 'hsla(50, 100%, 50%, 1)'; ctx.beginPath(); for (var i = 0; i < 11; i++) { var theta = Math.PI * 2 * i / 10 + Math.PI / 2; var radius = i % 2 ? 20 : 10; var dx = Math.cos(theta) * radius; var dy = Math.sin(theta) * radius; ctx[i ? 'lineTo' : 'moveTo'](dx, dy); } ctx.fill(); ctx.stroke(); ctx.closePath(); } /* globals cub, WinAnimation, Unipointer, Maze */ var docElem = document.documentElement; var canvas = document.querySelector('canvas'); var ctx = canvas.getContext('2d'); // size canvas; var canvasSize = Math.min(window.innerWidth, window.innerHeight); var canvasWidth = canvas.width = window.innerWidth * 2; var canvasHeight = canvas.height = window.innerHeight * 2; var maze; var PI = Math.PI; var TAU = PI * 2; var dragAngle = null; var cubDragMove = null; var isCubHovered = false; var isCubDragging = false; var winAnim; var unipointer = new Unipointer(); // ----- config ----- // var gridSize = Math.min(40, canvasSize / 12); var mazeCenter = { x: canvasWidth / 4, y: Math.min(gridSize * 8, canvasHeight / 4) }; // ----- instruction ----- // var instructElem = document.querySelector('.instruction'); instructElem.style.top = (mazeCenter.y + gridSize * 5.5) + 'px'; // ----- build level select, levels array ----- // var levelList = document.querySelector('.level-list'); var levelsElem = document.querySelector('.levels'); var levels = []; (function() { var levelPres = levelsElem.querySelectorAll('pre'); var fragment = document.createDocumentFragment(); for (var i = 0; i < levelPres.length; i++) { var pre = levelPres[i]; var listItem = document.createElement('li'); listItem.className = 'level-list__item'; var id = pre.id; listItem.innerHTML = '<span class="level-list__item__number">' + (i + 1) + '</span> <span class="level-list__item__blurb">' + pre.getAttribute('data-blurb') + '</span>' + '<span class="level-list__item__check">✔</span>'; listItem.setAttribute('data-id', id); fragment.appendChild(listItem); levels.push(id); } levelList.appendChild(fragment); })(); // ----- levels button ----- // var levelSelectButton = document.querySelector('.level-select-button'); var nextLevelButton = document.querySelector('.next-level-button'); levelSelectButton.addEventListener('click', function() { levelList.classList.add('is-open'); }); nextLevelButton.style.top = (mazeCenter.y + gridSize * 5.5) + 'px'; // ----- level list ----- // levelList.addEventListener('click', function(event) { var item = getParent(event.target, '.level-list__item'); if (!item) { return; } // load level from id var id = item.getAttribute('data-id'); loadLevel(id); }); function getParent(elem, selector) { var parent = elem; while (parent != document.body) { if (parent.matches(selector)) { return parent; } parent = parent.parentNode; } } // ----- load level ----- // function loadLevel(id) { var pre = levelsElem.querySelector('#' + id); maze = new Maze(); maze.id = id; // load maze level from pre text maze.loadText(pre.textContent); // close ui levelList.classList.remove('is-open'); nextLevelButton.classList.remove('is-open'); window.scrollTo(0, 0); // highlight list var previousItem = levelList.querySelector('.is-playing'); if (previousItem) { previousItem.classList.remove('is-playing'); } levelList.querySelector('[data-id="' + id + '"]').classList.add('is-playing'); localStorage.setItem('currentLevel', id); } // ----- init ----- // var initialLevel = localStorage.getItem('currentLevel') || levels[0]; loadLevel(initialLevel); unipointer.bindStartEvent(canvas); window.addEventListener('mousemove', onHoverMousemove); animate(); // -------------------------- drag rotation -------------------------- // var canvasLeft = canvas.offsetLeft; var canvasTop = canvas.offsetTop; var pointerBehavior; // ----- pointerBehavior ----- // var cubDrag = {}; var mazeRotate = {}; // ----- ----- // unipointer.pointerDown = function(event, pointer) { event.preventDefault(); var isInsideCub = getIsInsideCub(pointer); pointerBehavior = isInsideCub ? cubDrag : mazeRotate; pointerBehavior.pointerDown(event, pointer); this._bindPostStartEvents(event); }; function getIsInsideCub(pointer) { var position = getCanvasMazePosition(pointer); var cubDeltaX = Math.abs(position.x - cub[maze.orientation].x * gridSize); var cubDeltaY = Math.abs(position.y - cub[maze.orientation].y * gridSize); var bound = gridSize * 1.5; return cubDeltaX <= bound && cubDeltaY <= bound; } function getCanvasMazePosition(pointer) { var canvasX = pointer.pageX - canvasLeft; var canvasY = pointer.pageY - canvasTop; return { x: canvasX - mazeCenter.x, y: canvasY - mazeCenter.y, }; } // ----- unipointer ----- // unipointer.pointerMove = function(event, pointer) { pointerBehavior.pointerMove(event, pointer); }; unipointer.pointerUp = function(event, pointer) { pointerBehavior.pointerUp(event, pointer); this._unbindPostStartEvents(); }; // ----- cubDrag ----- // var dragStartPosition, dragStartPegPosition, rotatePointer; cubDrag.pointerDown = function(event, pointer) { var segments = getCubConnections(); if (!segments || !segments.length) { return; } isCubDragging = true; dragStartPosition = { x: pointer.pageX, y: pointer.pageY }; dragStartPegPosition = { x: cub[maze.orientation].x * gridSize + mazeCenter.x, y: cub[maze.orientation].y * gridSize + mazeCenter.y, }; docElem.classList.add('is-cub-dragging'); }; cubDrag.pointerMove = function(event, pointer) { if (!isCubDragging) { return; } cubDragMove = { x: pointer.pageX - dragStartPosition.x, y: pointer.pageY - dragStartPosition.y, }; }; cubDrag.pointerUp = function() { cubDragMove = null; docElem.classList.remove('is-cub-dragging'); isCubDragging = false; // set at peg cub.setOffset({ x: 0, y: 0 }, maze.orientation); // check level complete if (cub.peg.x == maze.goalPosition.x && cub.peg.y == maze.goalPosition.y) { completeLevel(); console.log('win'); } }; // ----- rotate ----- // var dragStartAngle, dragStartMazeAngle, moveAngle; var mazeRotate = {}; mazeRotate.pointerDown = function(event, pointer) { dragStartAngle = moveAngle = getDragAngle(pointer); dragStartMazeAngle = maze.flyWheel.angle; dragAngle = dragStartMazeAngle; rotatePointer = pointer; }; function getDragAngle(pointer) { var position = getCanvasMazePosition(pointer); return normalizeAngle(Math.atan2(position.y, position.x)); } mazeRotate.pointerMove = function(event, pointer) { rotatePointer = pointer; moveAngle = getDragAngle(pointer); var deltaAngle = moveAngle - dragStartAngle; dragAngle = normalizeAngle(dragStartMazeAngle + deltaAngle); }; mazeRotate.pointerUp = function() { dragAngle = null; rotatePointer = null; }; // ----- animate ----- // function animate() { update(); render(); requestAnimationFrame(animate); } // ----- update ----- // function update() { // drag cub dragCub(); // rotate grid if (dragAngle) { maze.flyWheel.setAngle(dragAngle); } else { maze.attractAlignFlyWheel(); } maze.update(); if (winAnim) { winAnim.update(); } } function dragCub() { if (!cubDragMove) { return; } var segments = getCubConnections(); var dragPosition = { x: dragStartPegPosition.x + cubDragMove.x, y: dragStartPegPosition.y + cubDragMove.y, }; // set peg position var dragPeg = getDragPeg(segments, dragPosition); cub.setPeg(dragPeg, maze.orientation); // set drag offset var cubDragPosition = getDragPosition(segments, dragPosition); var cubPosition = getCubPosition(); var offset = { x: cubDragPosition.x - cubPosition.x, y: cubDragPosition.y - cubPosition.y, }; cub.setOffset(offset, maze.orientation); } function getCubPosition() { return { x: cub[maze.orientation].x * gridSize + mazeCenter.x, y: cub[maze.orientation].y * gridSize + mazeCenter.y, }; } function getCubConnections() { var pegX = cub[maze.orientation].x; var pegY = cub[maze.orientation].y; var key = maze.orientation + ':' + pegX + ',' + pegY; return maze.connections[key]; } function getDragPosition(segments, dragPosition) { if (segments.length == 1) { return getSegmentDragPosition(segments[0], dragPosition); } // get closest segments positions var dragCandidates = segments.map(function(segment) { var position = getSegmentDragPosition(segment, dragPosition); return { position: position, distance: getDistance(dragPosition, position), }; }); dragCandidates.sort(distanceSorter); return dragCandidates[0].position; } function getSegmentDragPosition(segment, dragPosition) { var line = segment[maze.orientation]; var isHorizontal = line.a.y == line.b.y; var x, y; if (isHorizontal) { x = getSegmentDragCoord(line, 'x', dragPosition); y = line.a.y * gridSize + mazeCenter.y; } else { x = line.a.x * gridSize + mazeCenter.x; y = getSegmentDragCoord(line, 'y', dragPosition); } return { x: x, y: y }; } function getSegmentDragCoord(line, axis, dragPosition) { var a = line.a[axis]; var b = line.b[axis]; var min = a < b ? a : b; var max = a > b ? a : b; min = min * gridSize + mazeCenter[axis]; max = max * gridSize + mazeCenter[axis]; return Math.max(min, Math.min(max, dragPosition[axis])); } function distanceSorter(a, b) { return a.distance - b.distance; } function getDragPeg(segments, dragPosition) { var pegs = []; segments.forEach(function(segment) { var line = segment[maze.orientation]; addPegPoint(line.a, pegs); addPegPoint(line.b, pegs); }); var pegCandidates = pegs.map(function(pegKey) { // revert string back to object with integers var parts = pegKey.split(','); var peg = { x: parseInt(parts[0], 10), y: parseInt(parts[1], 10), }; var pegPosition = { x: peg.x * gridSize + mazeCenter.x, y: peg.y * gridSize + mazeCenter.y, }; return { peg: peg, distance: getDistance(dragPosition, pegPosition), }; }); pegCandidates.sort(distanceSorter); return pegCandidates[0].peg; } function getDistance(a, b) { var dx = b.x - a.x; var dy = b.y - a.y; return Math.sqrt(dx * dx + dy * dy); } function addPegPoint(point, pegs) { // use strings to prevent dupes var key = point.x + ',' + point.y; if (pegs.indexOf(key) == -1) { pegs.push(key); } } // ----- hover ----- // function onHoverMousemove(event) { var isInsideCub = getIsInsideCub(event); if (isInsideCub == isCubHovered) { return; } // change isCubHovered = isInsideCub; var changeClass = isInsideCub ? 'add' : 'remove'; docElem.classList[changeClass]('is-cub-hovered'); } // ----- render ----- // function render() { ctx.clearRect(0, 0, canvasWidth, canvasHeight); ctx.save(); ctx.scale(2, 2); renderRotateHandle(); // maze maze.render(ctx, mazeCenter, gridSize, maze.flyWheel.angle); // win animation if (winAnim) { winAnim.render(ctx); } // cub var isHovered = isCubHovered || isCubDragging; cub.render(ctx, mazeCenter, gridSize, maze.flyWheel.angle, isHovered); ctx.restore(); } function renderRotateHandle() { // rotate handle if (!rotatePointer) { return; } ctx.lineCap = 'round'; ctx.lineJoin = 'round'; ctx.lineWidth = gridSize * 0.5; var color = '#EEE'; ctx.strokeStyle = color; ctx.fillStyle = color; // pie slice ctx.beginPath(); var pieRadius = maze.gridMax * gridSize; ctx.moveTo(mazeCenter.x, mazeCenter.y); var pieDirection = normalizeAngle(normalizeAngle(moveAngle) - normalizeAngle(dragStartAngle)) > TAU / 2; ctx.arc(mazeCenter.x, mazeCenter.y, pieRadius, dragStartAngle, moveAngle, pieDirection); ctx.lineTo(mazeCenter.x, mazeCenter.y); ctx.stroke(); ctx.fill(); ctx.closePath(); } // -------------------------- completeLevel -------------------------- // var completedLevels = localStorage.getItem('completedLevels'); completedLevels = completedLevels ? completedLevels.split(',') : []; completedLevels.forEach(function(id) { levelList.querySelector('[data-id="' + id + '"]').classList.add('did-complete'); }); function completeLevel() { var cubPosition = getCubPosition(); winAnim = new WinAnimation(cubPosition.x, cubPosition.y); levelList.querySelector('[data-id="' + maze.id + '"]').classList.add('did-complete'); if (completedLevels.indexOf(maze.id) == -1) { completedLevels.push(maze.id); localStorage.setItem('completedLevels', completedLevels.join(',')); } if (getNextLevel()) { setTimeout(function() { nextLevelButton.classList.add('is-open'); }, 1000); } } function getNextLevel() { var index = levels.indexOf(maze.id); return levels[index + 1]; } // -------------------------- next level -------------------------- // nextLevelButton.addEventListener('click', function() { var nextLevel = getNextLevel(); if (nextLevel) { loadLevel(nextLevel); } }); // -------------------------- utils -------------------------- // function normalizeAngle(angle) { return ((angle % TAU) + TAU) % TAU; }

* { box-sizing: border-box; } body { margin: 0; padding: 0; overflow-x: hidden; font-family: 'Avenir Next', Avenir, sans-serif; font-weight: 500; font-size: 20px; color: #555; } canvas { cursor: move; display: block; position: absolute; max-width: 100%; left: 0; top: 0; } .is-cub-hovered, .is-cub-hovered canvas { cursor: -webkit-grab; cursor: grab; } .is-cub-dragging, .is-cub-dragging canvas { cursor: -webkit-grabbing; cursor: grabbing; } .instruction { padding: 0 10px; text-align: center; position: absolute; width: 100%; padding-bottom: 40px; } .button { font-family: 'Avenir Next', Avenir, sans-serif; font-weight: 500; font-size: 20px; padding: 5px 15px; margin: 10px; background: #BBB; color: white; border-radius: 5px; border: none; cursor: pointer; } .button:hover { background: #09F; } .top-bar { position: absolute; left: 0; top: 0; } .level-select-button { position: relative; z-index: 2; /* above canvas */ } .next-level-button { position: absolute; left: 50%; -webkit-transform: translateX(-110px) scale(0.5); transform: translateX(-110px) scale(0.5); opacity: 0; background: #09F; width: 200px; height: 80px; pointer-events: none; -webkit-transition: -webkit-transform 0.2s, opacity 0.2s; transition: transform 0.2s, opacity 0.2s; } .next-level-button:hover { background: #2BF; } .next-level-button.is-open { display: inline-block; pointer-events: auto; -webkit-transform: translateX(-110px) scale(1); transform: translate(-110px) scale(1); opacity: 1; } /* ---- level list ---- */ .level-list { position: absolute; background: #EEE; width: 100%; min-height: 100%; left: 0; top: 0; margin: 0; list-style: none; padding: 10px; z-index: 3; /* above canvas, level select button */ left: -100%; transition: left 0.2s; } .level-list.is-open { left: 0; } .level-list__item { display: inline-block; background: #DDD; margin: 5px; padding: 10px; width: 80px; height: 80px; text-align: center; border-radius: 10px; position: relative; } .level-list__item:hover { color: #09F; cursor: pointer; background: white; } .level-list__item.is-playing { background: #09F; color: white; } .level-list__item__number { display: block; font-size: 30px; line-height: 35px; } .level-list__item__blurb { display: block; font-size: 16px; } .level-list__item__check { position: absolute; right: -10px; top: -10px; width: 30px; line-height: 30px; background: #555; border-radius: 15px; color: white; display: none; } .level-list__item.did-complete .level-list__item__check { display: block; } /* ---- level pres ---- */ .levels { display: none; }
submitted 7 years ago ago by 346e369614c2418496fad67c1453fada
0 comments
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    /** * EvEmitter v1.0.2 * Lil' event emitter * MIT License */ /* jshint unused: true, undef: true, strict: true */ (function(global, factory) { // universal module definition /* jshint strict: false */ /* globals define, module */ if (typeof define == 'function' && define.amd) { // AMD - RequireJS define(factory); } else if (typeof module == 'object' && module.exports) { // CommonJS - Browserify, Webpack module.exports = factory(); } else { // Browser globals global.EvEmitter = factory(); } }(this, function() { "use strict"; function EvEmitter() {} var proto = EvEmitter.prototype; proto.on = function(eventName, listener) { if (!eventName || !listener) { return; } // set events hash var events = this._events = this._events || {}; // set listeners array var listeners = events[eventName] = events[eventName] || []; // only add once if (listeners.indexOf(listener) == -1) { listeners.push(listener); } return this; }; proto.once = function(eventName, listener) { if (!eventName || !listener) { return; } // add event this.on(eventName, listener); // set once flag // set onceEvents hash var onceEvents = this._onceEvents = this._onceEvents || {}; // set onceListeners object var onceListeners = onceEvents[eventName] = onceEvents[eventName] || {}; // set flag onceListeners[listener] = true; return this; }; proto.off = function(eventName, listener) { var listeners = this._events && this._events[eventName]; if (!listeners || !listeners.length) { return; } var index = listeners.indexOf(listener); if (index != -1) { listeners.splice(index, 1); } return this; }; proto.emitEvent = function(eventName, args) { var listeners = this._events && this._events[eventName]; if (!listeners || !listeners.length) { return; } var i = 0; var listener = listeners[i]; args = args || []; // once stuff var onceListeners = this._onceEvents && this._onceEvents[eventName]; while (listener) { var isOnce = onceListeners && onceListeners[listener]; if (isOnce) { // remove listener // remove before trigger to prevent recursion this.off(eventName, listener); // unset once flag delete onceListeners[listener]; } // trigger listener listener.apply(this, args); // get next listener i += isOnce ? 0 : 1; listener = listeners[i]; } return this; }; return EvEmitter; })); /*! * Unipointer v2.1.0 * base class for doing one thing with pointer event * MIT license */ /*jshint browser: true, undef: true, unused: true, strict: true */ (function(window, factory) { // universal module definition /* jshint strict: false */ /*global define, module, require */ if (typeof define == 'function' && define.amd) { // AMD define([ 'ev-emitter/ev-emitter' ], function(EvEmitter) { return factory(window, EvEmitter); }); } else if (typeof module == 'object' && module.exports) { // CommonJS module.exports = factory( window, require('ev-emitter') ); } else { // browser global window.Unipointer = factory( window, window.EvEmitter ); } }(window, function factory(window, EvEmitter) { 'use strict'; function noop() {} function Unipointer() {} // inherit EvEmitter var proto = Unipointer.prototype = Object.create(EvEmitter.prototype); proto.bindStartEvent = function(elem) { this._bindStartEvent(elem, true); }; proto.unbindStartEvent = function(elem) { this._bindStartEvent(elem, false); }; /** * works as unbinder, as you can ._bindStart( false ) to unbind * @param {Boolean} isBind - will unbind if falsey */ proto._bindStartEvent = function(elem, isBind) { // munge isBind, default to true isBind = isBind === undefined ? true : !!isBind; var bindMethod = isBind ? 'addEventListener' : 'removeEventListener'; if (window.navigator.pointerEnabled) { // W3C Pointer Events, IE11. See https://coderwall.com/p/mfreca elem[bindMethod]('pointerdown', this); } else if (window.navigator.msPointerEnabled) { // IE10 Pointer Events elem[bindMethod]('MSPointerDown', this); } else { // listen for both, for devices like Chrome Pixel elem[bindMethod]('mousedown', this); elem[bindMethod]('touchstart', this); } }; // trigger handler methods for events proto.handleEvent = function(event) { var method = 'on' + event.type; if (this[method]) { this[method](event); } }; // returns the touch that we're keeping track of proto.getTouch = function(touches) { for (var i = 0; i < touches.length; i++) { var touch = touches[i]; if (touch.identifier == this.pointerIdentifier) { return touch; } } }; // ----- start event ----- // proto.onmousedown = function(event) { // dismiss clicks from right or middle buttons var button = event.button; if (button && (button !== 0 && button !== 1)) { return; } this._pointerDown(event, event); }; proto.ontouchstart = function(event) { this._pointerDown(event, event.changedTouches[0]); }; proto.onMSPointerDown = proto.onpointerdown = function(event) { this._pointerDown(event, event); }; /** * pointer start * @param {Event} event * @param {Event or Touch} pointer */ proto._pointerDown = function(event, pointer) { // dismiss other pointers if (this.isPointerDown) { return; } this.isPointerDown = true; // save pointer identifier to match up touch events this.pointerIdentifier = pointer.pointerId !== undefined ? // pointerId for pointer events, touch.indentifier for touch events pointer.pointerId : pointer.identifier; this.pointerDown(event, pointer); }; proto.pointerDown = function(event, pointer) { this._bindPostStartEvents(event); this.emitEvent('pointerDown', [event, pointer]); }; // hash of events to be bound after start event var postStartEvents = { mousedown: ['mousemove', 'mouseup'], touchstart: ['touchmove', 'touchend', 'touchcancel'], pointerdown: ['pointermove', 'pointerup', 'pointercancel'], MSPointerDown: ['MSPointerMove', 'MSPointerUp', 'MSPointerCancel'] }; proto._bindPostStartEvents = function(event) { if (!event) { return; } // get proper events to match start event var events = postStartEvents[event.type]; // bind events to node events.forEach(function(eventName) { window.addEventListener(eventName, this); }, this); // save these arguments this._boundPointerEvents = events; }; proto._unbindPostStartEvents = function() { // check for _boundEvents, in case dragEnd triggered twice (old IE8 bug) if (!this._boundPointerEvents) { return; } this._boundPointerEvents.forEach(function(eventName) { window.removeEventListener(eventName, this); }, this); delete this._boundPointerEvents; }; // ----- move event ----- // proto.onmousemove = function(event) { this._pointerMove(event, event); }; proto.onMSPointerMove = proto.onpointermove = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerMove(event, event); } }; proto.ontouchmove = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerMove(event, touch); } }; /** * pointer move * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerMove = function(event, pointer) { this.pointerMove(event, pointer); }; // public proto.pointerMove = function(event, pointer) { this.emitEvent('pointerMove', [event, pointer]); }; // ----- end event ----- // proto.onmouseup = function(event) { this._pointerUp(event, event); }; proto.onMSPointerUp = proto.onpointerup = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerUp(event, event); } }; proto.ontouchend = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerUp(event, touch); } }; /** * pointer up * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerUp = function(event, pointer) { this._pointerDone(); this.pointerUp(event, pointer); }; // public proto.pointerUp = function(event, pointer) { this.emitEvent('pointerUp', [event, pointer]); }; // ----- pointer done ----- // // triggered on pointer up & pointer cancel proto._pointerDone = function() { // reset properties this.isPointerDown = false; delete this.pointerIdentifier; // remove events this._unbindPostStartEvents(); this.pointerDone(); }; proto.pointerDone = noop; // ----- pointer cancel ----- // proto.onMSPointerCancel = proto.onpointercancel = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerCancel(event, event); } }; proto.ontouchcancel = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerCancel(event, touch); } }; /** * pointer cancel * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerCancel = function(event, pointer) { this._pointerDone(); this.pointerCancel(event, pointer); }; // public proto.pointerCancel = function(event, pointer) { this.emitEvent('pointerCancel', [event, pointer]); }; // ----- ----- // // utility function for getting x/y coords from event Unipointer.getPointerPoint = function(pointer) { return { x: pointer.pageX, y: pointer.pageY }; }; // ----- ----- // return Unipointer; })); function FreeSegment(a, b) { this.type = 'FreeSegment'; this.a = a; this.b = b; // orientations this.noon = { a: a, b: b }; this.three = { a: { x: -a.y, y: a.x }, b: { x: -b.y, y: b.x } }; this.six = { a: { x: -a.x, y: -a.y }, b: { x: -b.x, y: -b.y } }; this.nine = { a: { x: a.y, y: -a.x }, b: { x: b.y, y: -b.x } }; } var proto = FreeSegment.prototype; proto.connect = function(maze) { this.connectOrientation(maze, 'noon'); this.connectOrientation(maze, 'three'); this.connectOrientation(maze, 'six'); this.connectOrientation(maze, 'nine'); }; proto.connectOrientation = function(maze, orientation) { var line = this[orientation]; maze.connect(this, orientation, line.a); maze.connect(this, orientation, line.b); }; proto.render = function(ctx, center, gridSize) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.b.x * gridSize; var by = this.b.y * gridSize; ctx.strokeStyle = 'hsla(200, 80%, 50%, 0.7)'; ctx.lineWidth = gridSize * 0.6; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); }; function FixedSegment(a, b) { this.type = 'FixedSegment'; this.a = a; this.b = b; // orientations this.noon = { a: a, b: b }; this.three = { a: a, b: b }; this.six = { a: a, b: b }; this.nine = { a: a, b: b }; } var proto = FixedSegment.prototype; proto.connect = function(maze) { maze.connect(this, 'noon', this.a); maze.connect(this, 'noon', this.b); maze.connect(this, 'three', this.a); maze.connect(this, 'three', this.b); maze.connect(this, 'six', this.a); maze.connect(this, 'six', this.b); maze.connect(this, 'nine', this.a); maze.connect(this, 'nine', this.b); }; proto.render = function(ctx, center, gridSize) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.b.x * gridSize; var by = this.b.y * gridSize; ctx.strokeStyle = 'hsla(30, 100%, 40%, 0.6)'; ctx.lineWidth = gridSize * 0.8; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); }; function PivotSegment(a, b) { this.type = 'FreeSegment'; this.a = a; this.b = b; var dx = b.x - a.x; var dy = b.y - a.y; this.delta = { x: dx, y: dy }; // orientations this.noon = { a: a, b: b }; this.three = { a: { x: -a.y, y: a.x }, b: { x: -a.y + dx, y: a.x + dy } }; this.six = { a: { x: -a.x, y: -a.y }, b: { x: -a.x + dx, y: -a.y + dy } }; this.nine = { a: { x: a.y, y: -a.x }, b: { x: a.y + dx, y: -a.x + dy } }; } var proto = PivotSegment.prototype; proto.connect = function(maze) { this.connectOrientation(maze, 'noon'); this.connectOrientation(maze, 'three'); this.connectOrientation(maze, 'six'); this.connectOrientation(maze, 'nine'); }; proto.connectOrientation = function(maze, orientation) { var line = this[orientation]; if (maze.getIsPegOut(line.a) || maze.getIsPegOut(line.b)) { return; } maze.connect(this, orientation, line.a); maze.connect(this, orientation, line.b); }; proto.render = function(ctx, center, gridSize, mazeAngle) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.delta.x * gridSize; var by = this.delta.y * gridSize; ctx.save(); ctx.translate(ax, ay); ctx.rotate(-mazeAngle); var color = 'hsla(150, 100%, 35%, 0.7)' // line ctx.strokeStyle = color; ctx.lineWidth = gridSize * 0.4; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(0, 0); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); // circle ctx.fillStyle = color; ctx.beginPath(); ctx.arc(0, 0, gridSize * 0.4, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); ctx.restore(); }; // rotational physics model var TAU = Math.PI * 2; function FlyWheel(props) { this.angle = 0; this.friction = 0.95; this.velocity = 0; for (var prop in props) { this[prop] = props[prop]; } } var proto = FlyWheel.prototype; proto.integrate = function() { this.velocity *= this.friction; this.angle += this.velocity; this.normalizeAngle(); }; proto.applyForce = function(force) { this.velocity += force; }; proto.normalizeAngle = function() { this.angle = ((this.angle % TAU) + TAU) % TAU; }; proto.setAngle = function(theta) { var velo = theta - this.angle; if (velo > TAU / 2) { velo -= TAU; } else if (velo < -TAU / 2) { velo += TAU; } var force = velo - this.velocity; this.applyForce(force); }; var cub = { offset: { x: 0, y: 0 }, }; var pegOrienter = { noon: function(peg) { return peg; }, three: function(peg) { return { x: peg.y, y: -peg.x }; }, six: function(peg) { return { x: -peg.x, y: -peg.y }; }, nine: function(peg) { return { x: -peg.y, y: peg.x }; }, }; cub.setPeg = function(peg, orientation) { peg = pegOrienter[orientation](peg); this.peg = peg; this.noon = { x: peg.x, y: peg.y }; this.three = { x: -peg.y, y: peg.x }; this.six = { x: -peg.x, y: -peg.y }; this.nine = { x: peg.y, y: -peg.x }; }; var offsetOrienter = { noon: function(offset) { return offset; }, three: function(offset) { // flip y because its rendering return { x: offset.y, y: -offset.x }; }, six: function(offset) { return { x: -offset.x, y: -offset.y }; }, nine: function(offset) { // flip y because its rendering return { x: -offset.y, y: offset.x }; }, }; cub.setOffset = function(offset, orientation) { this.offset = offsetOrienter[orientation](offset); }; // ----- render ----- // cub.render = function(ctx, mazeCenter, gridSize, angle, isHovered) { function circle(x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); } // function eye( direction ) { // ctx.beginPath(); // ctx.arc( gridSize * 0.25 * direction, gridSize * 0.05, gridSize * 0.1, Math.PI, Math.PI*2 ); // ctx.fill(); // ctx.closePath(); // } var x = this.peg.x * gridSize + this.offset.x; var y = this.peg.y * gridSize + this.offset.y; ctx.save(); ctx.translate(mazeCenter.x, mazeCenter.y); ctx.rotate(angle); ctx.translate(x, y); ctx.rotate(-angle); ctx.fillStyle = 'hsla(330, 100%, 40%, 1)'; var scale = isHovered ? 1.15 : 1; ctx.scale(scale, scale); circle(0, 0, gridSize * 0.6); circle(gridSize * -0.45, gridSize * -0.35, gridSize * 0.3); circle(gridSize * 0.45, gridSize * -0.35, gridSize * 0.3); // // eyes // ctx.fillStyle = 'hsla(0, 0%, 0%, 0.8)'; // eye( 1 ); // eye( -1 ); // // nose // ctx.beginPath(); // ctx.arc( 0, gridSize * 0.15, gridSize * 0.1, 0, Math.PI ); // ctx.fill(); // ctx.closePath(); ctx.restore(); }; /* globals FlyWheel, FreeSegment, FixedSegment, PivotSegment, cub */ function Maze() { this.freeSegments = []; this.fixedSegments = []; this.pivotSegments = []; this.flyWheel = new FlyWheel({ friction: 0.8 }); this.connections = {}; } var proto = Maze.prototype; proto.loadText = function(text) { // separate --- sections, YAML front matter first, maze source second; var sections = text.split('---\n'); // YAML front matter var frontMatter = {}; if (sections.length > 1) { var frontMatter = getFrontMatter(sections[0]); } // set instruction var instructElem = document.querySelector('.instruction'); instructElem.innerHTML = frontMatter.instruction || ''; var mazeSrc = sections[sections.length - 1]; var lines = mazeSrc.split('\n'); var gridCount = this.gridCount = lines[0].length; var gridMax = this.gridMax = (gridCount - 1) / 2; for (var i = 0; i < lines.length; i++) { var line = lines[i]; var chars = line.split(''); for (var j = 0; j < chars.length; j++) { var character = chars[j]; var pegX = j - gridMax; var pegY = i - gridMax; var parseMethod = 'parse' + character; if (this[parseMethod]) { this[parseMethod](pegX, pegY); } } } }; function getFrontMatter(text) { if (!text) { return; } var frontMatter = {}; text.split('\n').forEach(function(line) { if (!line) { return; } var parts = line.split(':'); var key = parts[0].trim(); var value = parts[1].trim(); if (value === 'true') { value = true; // boolean true } else if (value === 'false') { value = false; // boolean false } else if (value.match(/$\d+(\.\d+)?^/)) { value = parseFloat(value, 10); // number } else if (value.match(/$\d+\.\d+^/)) { value = parseFloat(value); // float } frontMatter[key] = value; }); return frontMatter; } // -------------------------- parsers -------------------------- // // horizontal free segment proto['parse-'] = proto.addFreeHorizSegment = function(pegX, pegY) { var segment = getHorizSegment(pegX, pegY, FreeSegment); segment.connect(this); this.freeSegments.push(segment); }; // vertical free segment proto['parse|'] = proto.addFreeVertSegment = function(pegX, pegY) { var segment = getVertSegment(pegX, pegY, FreeSegment); segment.connect(this); this.freeSegments.push(segment); }; // horizontal fixed segment proto['parse='] = proto.addFixedHorizSegment = function(pegX, pegY) { var segment = getHorizSegment(pegX, pegY, FixedSegment); segment.connect(this); this.fixedSegments.push(segment); }; // vertical fixed segment proto['parse!'] = proto.addFixedVertSegment = function(pegX, pegY) { var segment = getVertSegment(pegX, pegY, FixedSegment); segment.connect(this); this.fixedSegments.push(segment); }; function getHorizSegment(pegX, pegY, Segment) { var a = { x: pegX + 1, y: pegY }; var b = { x: pegX - 1, y: pegY }; return new Segment(a, b); } function getVertSegment(pegX, pegY, Segment) { var a = { x: pegX, y: pegY + 1 }; var b = { x: pegX, y: pegY - 1 }; return new Segment(a, b); } // pivot up segment proto['parse^'] = function(pegX, pegY) { var a = { x: pegX, y: pegY + 1 }; var b = { x: pegX, y: pegY - 1 }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot down segment proto.parsev = proto.addPivotDownSegment = function(pegX, pegY) { var a = { x: pegX, y: pegY - 1 }; var b = { x: pegX, y: pegY + 1 }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot left segment proto['parse<'] = proto.addPivotLeftSegment = function(pegX, pegY) { var a = { x: pegX + 1, y: pegY }; var b = { x: pegX - 1, y: pegY }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot right segment proto['parse>'] = proto.addPivotRightSegment = function(pegX, pegY) { var a = { x: pegX - 1, y: pegY }; var b = { x: pegX + 1, y: pegY }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // free & fixed horizontal proto['parse#'] = function(pegX, pegY) { this.addFreeHorizSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // free & fixed vertical proto.parse$ = function(pegX, pegY) { this.addFreeVertSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot up + fixed vertical proto.parseI = function(pegX, pegY) { this.addPivotUpSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot left + fixed horizontal proto.parseJ = function(pegX, pegY) { this.addPivotLeftSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // pivot down + fixed vertical proto.parseK = function(pegX, pegY) { this.addPivotDownSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot right + fixed horizontal proto.parseL = function(pegX, pegY) { this.addPivotRightSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // pivot up + free vertical proto.parseW = function(pegX, pegY) { this.addPivotUpSegment(pegX, pegY); this.addFreeVertSegment(pegX, pegY); }; // pivot left + free horizontal proto.parseA = function(pegX, pegY) { this.addPivotLeftSegment(pegX, pegY); this.addFreeHorizSegment(pegX, pegY); }; // pivot down + free vertical proto.parseS = function(pegX, pegY) { this.addPivotDownSegment(pegX, pegY); this.addFreeVertSegment(pegX, pegY); }; // pivot right + free horizontal proto.parseD = function(pegX, pegY) { this.addPivotRightSegment(pegX, pegY); this.addFreeHorizSegment(pegX, pegY); }; // start position proto['parse@'] = function(pegX, pegY) { this.startPosition = { x: pegX, y: pegY }; cub.setPeg(this.startPosition, 'noon'); }; // goal position proto['parse*'] = function(pegX, pegY) { this.goalPosition = { x: pegX, y: pegY }; }; // -------------------------- -------------------------- // proto.updateItemGroups = function() { var itemGroups = {}; this.items.forEach(function(item) { if (itemGroups[item.type] === undefined) { itemGroups[item.type] = []; } itemGroups[item.type].push(item); }); this.itemGroups = itemGroups; }; proto.connect = function(segment, orientation, position) { // flatten the key var key = orientation + ':' + position.x + ',' + position.y; var connection = this.connections[key]; // create connections array if not already there if (!connection) { connection = this.connections[key] = []; } if (connection.indexOf(segment) == -1) { connection.push(segment); } }; proto.getIsPegOut = function(peg) { return Math.abs(peg.x) > this.gridMax || Math.abs(peg.y) > this.gridMax; }; // -------------------------- -------------------------- // proto.update = function() { this.flyWheel.integrate(); var angle = this.flyWheel.angle; if (angle < TAU / 8) { this.orientation = 'noon'; } else if (angle < TAU * 3 / 8) { this.orientation = 'three'; } else if (angle < TAU * 5 / 8) { this.orientation = 'six'; } else if (angle < TAU * 7 / 8) { this.orientation = 'nine'; } else { this.orientation = 'noon'; } }; proto.attractAlignFlyWheel = function() { // attract towards var angle = this.flyWheel.angle; var target; if (angle < TAU / 8) { target = 0; } else if (angle < TAU * 3 / 8) { target = TAU / 4; } else if (angle < TAU * 5 / 8) { target = TAU / 2; } else if (angle < TAU * 7 / 8) { target = TAU * 3 / 4; } else { target = TAU; } var attraction = (target - angle) * 0.03; this.flyWheel.applyForce(attraction); }; var TAU = Math.PI * 2; var orientationAngles = { noon: 0, three: TAU / 4, six: TAU / 2, nine: TAU * 3 / 4 }; proto.render = function(ctx, center, gridSize, angle) { var orientationAngle = orientationAngles[angle]; var gridMax = this.gridMax; angle = orientationAngle !== undefined ? orientationAngle : angle || 0; ctx.save(); ctx.translate(center.x, center.y); // fixed segments this.fixedSegments.forEach(function(item) { item.render(ctx, center, gridSize); }); // rotation ctx.rotate(angle); ctx.lineWidth = gridSize * 0.2; ctx.lineCap = 'round'; ctx.lineJoin = 'round'; // axle ctx.lineWidth = gridSize * 0.2; ctx.strokeStyle = 'hsla(0, 0%, 50%, 0.2)'; // strokeCircle( ctx, 0, 0, gridSize/2 ); ctx.save(); ctx.rotate(Math.PI / 4); ctx.strokeRect(-gridSize / 5, -gridSize / 5, gridSize * 2 / 5, gridSize * 2 / 5); ctx.restore(); // start position ctx.strokeStyle = 'hsla(330, 100%, 50%, 0.3)'; ctx.lineWidth = gridSize * 0.15; var startX = this.startPosition.x * gridSize; var startY = this.startPosition.y * gridSize; strokeCircle(ctx, startX, startY, gridSize * 0.5); // pegs for (var pegY = -gridMax; pegY <= gridMax; pegY += 2) { for (var pegX = -gridMax; pegX <= gridMax; pegX += 2) { var pegXX = pegX * gridSize; var pegYY = pegY * gridSize; ctx.fillStyle = 'hsla(0, 0%, 50%, 0.6)'; fillCircle(ctx, pegXX, pegYY, gridSize * 0.15); } } // free segments this.freeSegments.forEach(function(segment) { segment.render(ctx, center, gridSize); }); // pivot segments this.pivotSegments.forEach(function(segment) { segment.render(ctx, center, gridSize, angle); }); // goal position var goalX = this.goalPosition.x * gridSize; var goalY = this.goalPosition.y * gridSize; ctx.lineWidth = gridSize * 0.3; ctx.fillStyle = 'hsla(50, 100%, 50%, 1)'; ctx.strokeStyle = 'hsla(50, 100%, 50%, 1)'; renderGoal(ctx, goalX, goalY, angle, gridSize * 0.6, gridSize * 0.3); ctx.restore(); }; function fillCircle(ctx, x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); } function strokeCircle(ctx, x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.stroke(); ctx.closePath(); } function renderGoal(ctx, x, y, mazeAngle, radiusA, radiusB) { ctx.save(); ctx.translate(x, y); ctx.rotate(-mazeAngle); ctx.beginPath(); for (var i = 0; i < 11; i++) { var theta = Math.PI * 2 * i / 10 + Math.PI / 2; var radius = i % 2 ? radiusA : radiusB; var dx = Math.cos(theta) * radius; var dy = Math.sin(theta) * radius; ctx[i ? 'lineTo' : 'moveTo'](dx, dy); } ctx.fill(); ctx.stroke(); ctx.closePath(); ctx.restore(); } function WinAnimation(x, y) { this.x = x; this.y = y; this.startTime = new Date(); this.isPlaying = true; } // length of animation in milliseconds var duration = 1000; var proto = WinAnimation.prototype; proto.update = function() { if (!this.isPlaying) { return; } this.t = ((new Date()) - this.startTime) / duration; this.isPlaying = this.t <= 1; }; proto.render = function(ctx) { if (!this.isPlaying) { return; } ctx.save(); ctx.translate(this.x, this.y); // big burst this.renderBurst(ctx); // small burst ctx.save(); ctx.scale(0.5, -0.5); this.renderBurst(ctx); ctx.restore(); ctx.restore(); }; proto.renderBurst = function(ctx) { var t = this.t; var dt = 1 - t; var easeT = 1 - dt * dt * dt * dt * dt * dt * dt * dt; var dy = easeT * -100; // scale math var st = 2 - this.t * 2; var scale = (1 - t * t * t) * 1.5; var spin = Math.PI * 1 * t * t * t; for (var i = 0; i < 5; i++) { ctx.save(); ctx.rotate(Math.PI * 2 / 5 * i); ctx.translate(0, dy); ctx.scale(scale, scale); ctx.rotate(spin); renderStar(ctx); ctx.restore(); } }; function renderStar(ctx) { ctx.lineWidth = 8; ctx.lineJoin = 'round'; ctx.lineCap = 'round'; ctx.fillStyle = 'hsla(50, 100%, 50%, 1)'; ctx.strokeStyle = 'hsla(50, 100%, 50%, 1)'; ctx.beginPath(); for (var i = 0; i < 11; i++) { var theta = Math.PI * 2 * i / 10 + Math.PI / 2; var radius = i % 2 ? 20 : 10; var dx = Math.cos(theta) * radius; var dy = Math.sin(theta) * radius; ctx[i ? 'lineTo' : 'moveTo'](dx, dy); } ctx.fill(); ctx.stroke(); ctx.closePath(); } /* globals cub, WinAnimation, Unipointer, Maze */ var docElem = document.documentElement; var canvas = document.querySelector('canvas'); var ctx = canvas.getContext('2d'); // size canvas; var canvasSize = Math.min(window.innerWidth, window.innerHeight); var canvasWidth = canvas.width = window.innerWidth * 2; var canvasHeight = canvas.height = window.innerHeight * 2; var maze; var PI = Math.PI; var TAU = PI * 2; var dragAngle = null; var cubDragMove = null; var isCubHovered = false; var isCubDragging = false; var winAnim; var unipointer = new Unipointer(); // ----- config ----- // var gridSize = Math.min(40, canvasSize / 12); var mazeCenter = { x: canvasWidth / 4, y: Math.min(gridSize * 8, canvasHeight / 4) }; // ----- instruction ----- // var instructElem = document.querySelector('.instruction'); instructElem.style.top = (mazeCenter.y + gridSize * 5.5) + 'px'; // ----- build level select, levels array ----- // var levelList = document.querySelector('.level-list'); var levelsElem = document.querySelector('.levels'); var levels = []; (function() { var levelPres = levelsElem.querySelectorAll('pre'); var fragment = document.createDocumentFragment(); for (var i = 0; i < levelPres.length; i++) { var pre = levelPres[i]; var listItem = document.createElement('li'); listItem.className = 'level-list__item'; var id = pre.id; listItem.innerHTML = '<span class="level-list__item__number">' + (i + 1) + '</span> <span class="level-list__item__blurb">' + pre.getAttribute('data-blurb') + '</span>' + '<span class="level-list__item__check">?</span>'; listItem.setAttribute('data-id', id); fragment.appendChild(listItem); levels.push(id); } levelList.appendChild(fragment); })(); // ----- levels button ----- // var levelSelectButton = document.querySelector('.level-select-button'); var nextLevelButton = document.querySelector('.next-level-button'); levelSelectButton.addEventListener('click', function() { levelList.classList.add('is-open'); }); nextLevelButton.style.top = (mazeCenter.y + gridSize * 5.5) + 'px'; // ----- level list ----- // levelList.addEventListener('click', function(event) { var item = getParent(event.target, '.level-list__item'); if (!item) { return; } // load level from id var id = item.getAttribute('data-id'); loadLevel(id); }); function getParent(elem, selector) { var parent = elem; while (parent != document.body) { if (parent.matches(selector)) { return parent; } parent = parent.parentNode; } } // ----- load level ----- // function loadLevel(id) { var pre = levelsElem.querySelector('#' + id); maze = new Maze(); maze.id = id; // load maze level from pre text maze.loadText(pre.textContent); // close ui levelList.classList.remove('is-open'); nextLevelButton.classList.remove('is-open'); window.scrollTo(0, 0); // highlight list var previousItem = levelList.querySelector('.is-playing'); if (previousItem) { previousItem.classList.remove('is-playing'); } levelList.querySelector('[data-id="' + id + '"]').classList.add('is-playing'); localStorage.setItem('currentLevel', id); } // ----- init ----- // var initialLevel = localStorage.getItem('currentLevel') || levels[0]; loadLevel(initialLevel); unipointer.bindStartEvent(canvas); window.addEventListener('mousemove', onHoverMousemove); animate(); window["reddahApi"].loadCompleted(); // -------------------------- drag rotation -------------------------- // var canvasLeft = canvas.offsetLeft; var canvasTop = canvas.offsetTop; var pointerBehavior; // ----- pointerBehavior ----- // var cubDrag = {}; var mazeRotate = {}; // ----- ----- // unipointer.pointerDown = function(event, pointer) { event.preventDefault(); var isInsideCub = getIsInsideCub(pointer); pointerBehavior = isInsideCub ? cubDrag : mazeRotate; pointerBehavior.pointerDown(event, pointer); this._bindPostStartEvents(event); }; function getIsInsideCub(pointer) { var position = getCanvasMazePosition(pointer); var cubDeltaX = Math.abs(position.x - cub[maze.orientation].x * gridSize); var cubDeltaY = Math.abs(position.y - cub[maze.orientation].y * gridSize); var bound = gridSize * 1.5; return cubDeltaX <= bound && cubDeltaY <= bound; } function getCanvasMazePosition(pointer) { var canvasX = pointer.pageX - canvasLeft; var canvasY = pointer.pageY - canvasTop; return { x: canvasX - mazeCenter.x, y: canvasY - mazeCenter.y, }; } // ----- unipointer ----- // unipointer.pointerMove = function(event, pointer) { pointerBehavior.pointerMove(event, pointer); }; unipointer.pointerUp = function(event, pointer) { pointerBehavior.pointerUp(event, pointer); this._unbindPostStartEvents(); }; // ----- cubDrag ----- // var dragStartPosition, dragStartPegPosition, rotatePointer; cubDrag.pointerDown = function(event, pointer) { var segments = getCubConnections(); if (!segments || !segments.length) { return; } isCubDragging = true; dragStartPosition = { x: pointer.pageX, y: pointer.pageY }; dragStartPegPosition = { x: cub[maze.orientation].x * gridSize + mazeCenter.x, y: cub[maze.orientation].y * gridSize + mazeCenter.y, }; docElem.classList.add('is-cub-dragging'); }; cubDrag.pointerMove = function(event, pointer) { if (!isCubDragging) { return; } cubDragMove = { x: pointer.pageX - dragStartPosition.x, y: pointer.pageY - dragStartPosition.y, }; }; cubDrag.pointerUp = function() { cubDragMove = null; docElem.classList.remove('is-cub-dragging'); isCubDragging = false; // set at peg cub.setOffset({ x: 0, y: 0 }, maze.orientation); // check level complete if (cub.peg.x == maze.goalPosition.x && cub.peg.y == maze.goalPosition.y) { completeLevel(); console.log('win'); } }; // ----- rotate ----- // var dragStartAngle, dragStartMazeAngle, moveAngle; var mazeRotate = {}; mazeRotate.pointerDown = function(event, pointer) { dragStartAngle = moveAngle = getDragAngle(pointer); dragStartMazeAngle = maze.flyWheel.angle; dragAngle = dragStartMazeAngle; rotatePointer = pointer; }; function getDragAngle(pointer) { var position = getCanvasMazePosition(pointer); return normalizeAngle(Math.atan2(position.y, position.x)); } mazeRotate.pointerMove = function(event, pointer) { rotatePointer = pointer; moveAngle = getDragAngle(pointer); var deltaAngle = moveAngle - dragStartAngle; dragAngle = normalizeAngle(dragStartMazeAngle + deltaAngle); }; mazeRotate.pointerUp = function() { dragAngle = null; rotatePointer = null; }; // ----- animate ----- // function animate() { update(); render(); requestAnimationFrame(animate); } // ----- update ----- // function update() { // drag cub dragCub(); // rotate grid if (dragAngle) { maze.flyWheel.setAngle(dragAngle); } else { maze.attractAlignFlyWheel(); } maze.update(); if (winAnim) { winAnim.update(); } } function dragCub() { if (!cubDragMove) { return; } var segments = getCubConnections(); var dragPosition = { x: dragStartPegPosition.x + cubDragMove.x, y: dragStartPegPosition.y + cubDragMove.y, }; // set peg position var dragPeg = getDragPeg(segments, dragPosition); cub.setPeg(dragPeg, maze.orientation); // set drag offset var cubDragPosition = getDragPosition(segments, dragPosition); var cubPosition = getCubPosition(); var offset = { x: cubDragPosition.x - cubPosition.x, y: cubDragPosition.y - cubPosition.y, }; cub.setOffset(offset, maze.orientation); } function getCubPosition() { return { x: cub[maze.orientation].x * gridSize + mazeCenter.x, y: cub[maze.orientation].y * gridSize + mazeCenter.y, }; } function getCubConnections() { var pegX = cub[maze.orientation].x; var pegY = cub[maze.orientation].y; var key = maze.orientation + ':' + pegX + ',' + pegY; return maze.connections[key]; } function getDragPosition(segments, dragPosition) { if (segments.length == 1) { return getSegmentDragPosition(segments[0], dragPosition); } // get closest segments positions var dragCandidates = segments.map(function(segment) { var position = getSegmentDragPosition(segment, dragPosition); return { position: position, distance: getDistance(dragPosition, position), }; }); dragCandidates.sort(distanceSorter); return dragCandidates[0].position; } function getSegmentDragPosition(segment, dragPosition) { var line = segment[maze.orientation]; var isHorizontal = line.a.y == line.b.y; var x, y; if (isHorizontal) { x = getSegmentDragCoord(line, 'x', dragPosition); y = line.a.y * gridSize + mazeCenter.y; } else { x = line.a.x * gridSize + mazeCenter.x; y = getSegmentDragCoord(line, 'y', dragPosition); } return { x: x, y: y }; } function getSegmentDragCoord(line, axis, dragPosition) { var a = line.a[axis]; var b = line.b[axis]; var min = a < b ? a : b; var max = a > b ? a : b; min = min * gridSize + mazeCenter[axis]; max = max * gridSize + mazeCenter[axis]; return Math.max(min, Math.min(max, dragPosition[axis])); } function distanceSorter(a, b) { return a.distance - b.distance; } function getDragPeg(segments, dragPosition) { var pegs = []; segments.forEach(function(segment) { var line = segment[maze.orientation]; addPegPoint(line.a, pegs); addPegPoint(line.b, pegs); }); var pegCandidates = pegs.map(function(pegKey) { // revert string back to object with integers var parts = pegKey.split(','); var peg = { x: parseInt(parts[0], 10), y: parseInt(parts[1], 10), }; var pegPosition = { x: peg.x * gridSize + mazeCenter.x, y: peg.y * gridSize + mazeCenter.y, }; return { peg: peg, distance: getDistance(dragPosition, pegPosition), }; }); pegCandidates.sort(distanceSorter); return pegCandidates[0].peg; } function getDistance(a, b) { var dx = b.x - a.x; var dy = b.y - a.y; return Math.sqrt(dx * dx + dy * dy); } function addPegPoint(point, pegs) { // use strings to prevent dupes var key = point.x + ',' + point.y; if (pegs.indexOf(key) == -1) { pegs.push(key); } } // ----- hover ----- // function onHoverMousemove(event) { var isInsideCub = getIsInsideCub(event); if (isInsideCub == isCubHovered) { return; } // change isCubHovered = isInsideCub; var changeClass = isInsideCub ? 'add' : 'remove'; docElem.classList[changeClass]('is-cub-hovered'); } // ----- render ----- // function render() { ctx.clearRect(0, 0, canvasWidth, canvasHeight); ctx.save(); ctx.scale(2, 2); renderRotateHandle(); // maze maze.render(ctx, mazeCenter, gridSize, maze.flyWheel.angle); // win animation if (winAnim) { winAnim.render(ctx); } // cub var isHovered = isCubHovered || isCubDragging; cub.render(ctx, mazeCenter, gridSize, maze.flyWheel.angle, isHovered); ctx.restore(); } function renderRotateHandle() { // rotate handle if (!rotatePointer) { return; } ctx.lineCap = 'round'; ctx.lineJoin = 'round'; ctx.lineWidth = gridSize * 0.5; var color = '#EEE'; ctx.strokeStyle = color; ctx.fillStyle = color; // pie slice ctx.beginPath(); var pieRadius = maze.gridMax * gridSize; ctx.moveTo(mazeCenter.x, mazeCenter.y); var pieDirection = normalizeAngle(normalizeAngle(moveAngle) - normalizeAngle(dragStartAngle)) > TAU / 2; ctx.arc(mazeCenter.x, mazeCenter.y, pieRadius, dragStartAngle, moveAngle, pieDirection); ctx.lineTo(mazeCenter.x, mazeCenter.y); ctx.stroke(); ctx.fill(); ctx.closePath(); } // -------------------------- completeLevel -------------------------- // var completedLevels = localStorage.getItem('completedLevels'); completedLevels = completedLevels ? completedLevels.split(',') : []; completedLevels.forEach(function(id) { levelList.querySelector('[data-id="' + id + '"]').classList.add('did-complete'); }); function completeLevel() { var cubPosition = getCubPosition(); winAnim = new WinAnimation(cubPosition.x, cubPosition.y); levelList.querySelector('[data-id="' + maze.id + '"]').classList.add('did-complete'); if (completedLevels.indexOf(maze.id) == -1) { completedLevels.push(maze.id); localStorage.setItem('completedLevels', completedLevels.join(',')); } if (getNextLevel()) { setTimeout(function() { nextLevelButton.classList.add('is-open'); }, 1000); } } function getNextLevel() { var index = levels.indexOf(maze.id); return levels[index + 1]; } // -------------------------- next level -------------------------- // nextLevelButton.addEventListener('click', function() { var nextLevel = getNextLevel(); if (nextLevel) { loadLevel(nextLevel); } }); // -------------------------- utils -------------------------- // function normalizeAngle(angle) { return ((angle % TAU) + TAU) % TAU; }

    * { box-sizing: border-box; } body { margin: 0; padding: 0; overflow-x: hidden; font-family: 'Avenir Next', Avenir, sans-serif; font-weight: 500; font-size: 20px; color: #555; } canvas { cursor: move; display: block; position: absolute; max-width: 100%; left: 0; top: 0; } .is-cub-hovered, .is-cub-hovered canvas { cursor: -webkit-grab; cursor: grab; } .is-cub-dragging, .is-cub-dragging canvas { cursor: -webkit-grabbing; cursor: grabbing; } .instruction { padding: 0 10px; text-align: center; position: absolute; width: 100%; padding-bottom: 40px; } .button { font-family: 'Avenir Next', Avenir, sans-serif; font-weight: 500; font-size: 20px; padding: 5px 15px; margin: 10px; background: #BBB; color: white; border-radius: 5px; border: none; cursor: pointer; } .button:hover { background: #09F; } .top-bar { position: absolute; left: 0; top: 0; } .level-select-button { position: relative; z-index: 2; /* above canvas */ } .next-level-button { position: absolute; left: 50%; -webkit-transform: translateX(-110px) scale(0.5); transform: translateX(-110px) scale(0.5); opacity: 0; background: #09F; width: 200px; height: 80px; pointer-events: none; -webkit-transition: -webkit-transform 0.2s, opacity 0.2s; transition: transform 0.2s, opacity 0.2s; } .next-level-button:hover { background: #2BF; } .next-level-button.is-open { display: inline-block; pointer-events: auto; -webkit-transform: translateX(-110px) scale(1); transform: translate(-110px) scale(1); opacity: 1; } /* ---- level list ---- */ .level-list { position: absolute; background: #EEE; width: 100%; min-height: 100%; left: 0; top: 0; margin: 0; list-style: none; padding: 10px; z-index: 3; /* above canvas, level select button */ left: -100%; transition: left 0.2s; } .level-list.is-open { left: 0; } .level-list__item { display: inline-block; background: #DDD; margin: 5px; padding: 10px; width: 80px; height: 80px; text-align: center; border-radius: 10px; position: relative; } .level-list__item:hover { color: #09F; cursor: pointer; background: white; } .level-list__item.is-playing { background: #09F; color: white; } .level-list__item__number { display: block; font-size: 30px; line-height: 35px; } .level-list__item__blurb { display: block; font-size: 16px; } .level-list__item__check { position: absolute; right: -10px; top: -10px; width: 30px; line-height: 30px; background: #555; border-radius: 15px; color: white; display: none; } .level-list__item.did-complete .level-list__item__check { display: block; } /* ---- level pres ---- */ .levels { display: none; }
    submitted 7 years ago ago by 346e369614c2418496fad67c1453fada
    0 comments
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      /** * EvEmitter v1.0.2 * Lil' event emitter * MIT License */ /* jshint unused: true, undef: true, strict: true */ (function(global, factory) { // universal module definition /* jshint strict: false */ /* globals define, module */ if (typeof define == 'function' && define.amd) { // AMD - RequireJS define(factory); } else if (typeof module == 'object' && module.exports) { // CommonJS - Browserify, Webpack module.exports = factory(); } else { // Browser globals global.EvEmitter = factory(); } }(this, function() { "use strict"; function EvEmitter() {} var proto = EvEmitter.prototype; proto.on = function(eventName, listener) { if (!eventName || !listener) { return; } // set events hash var events = this._events = this._events || {}; // set listeners array var listeners = events[eventName] = events[eventName] || []; // only add once if (listeners.indexOf(listener) == -1) { listeners.push(listener); } return this; }; proto.once = function(eventName, listener) { if (!eventName || !listener) { return; } // add event this.on(eventName, listener); // set once flag // set onceEvents hash var onceEvents = this._onceEvents = this._onceEvents || {}; // set onceListeners object var onceListeners = onceEvents[eventName] = onceEvents[eventName] || {}; // set flag onceListeners[listener] = true; return this; }; proto.off = function(eventName, listener) { var listeners = this._events && this._events[eventName]; if (!listeners || !listeners.length) { return; } var index = listeners.indexOf(listener); if (index != -1) { listeners.splice(index, 1); } return this; }; proto.emitEvent = function(eventName, args) { var listeners = this._events && this._events[eventName]; if (!listeners || !listeners.length) { return; } var i = 0; var listener = listeners[i]; args = args || []; // once stuff var onceListeners = this._onceEvents && this._onceEvents[eventName]; while (listener) { var isOnce = onceListeners && onceListeners[listener]; if (isOnce) { // remove listener // remove before trigger to prevent recursion this.off(eventName, listener); // unset once flag delete onceListeners[listener]; } // trigger listener listener.apply(this, args); // get next listener i += isOnce ? 0 : 1; listener = listeners[i]; } return this; }; return EvEmitter; })); /*! * Unipointer v2.1.0 * base class for doing one thing with pointer event * MIT license */ /*jshint browser: true, undef: true, unused: true, strict: true */ (function(window, factory) { // universal module definition /* jshint strict: false */ /*global define, module, require */ if (typeof define == 'function' && define.amd) { // AMD define([ 'ev-emitter/ev-emitter' ], function(EvEmitter) { return factory(window, EvEmitter); }); } else if (typeof module == 'object' && module.exports) { // CommonJS module.exports = factory( window, require('ev-emitter') ); } else { // browser global window.Unipointer = factory( window, window.EvEmitter ); } }(window, function factory(window, EvEmitter) { 'use strict'; function noop() {} function Unipointer() {} // inherit EvEmitter var proto = Unipointer.prototype = Object.create(EvEmitter.prototype); proto.bindStartEvent = function(elem) { this._bindStartEvent(elem, true); }; proto.unbindStartEvent = function(elem) { this._bindStartEvent(elem, false); }; /** * works as unbinder, as you can ._bindStart( false ) to unbind * @param {Boolean} isBind - will unbind if falsey */ proto._bindStartEvent = function(elem, isBind) { // munge isBind, default to true isBind = isBind === undefined ? true : !!isBind; var bindMethod = isBind ? 'addEventListener' : 'removeEventListener'; if (window.navigator.pointerEnabled) { // W3C Pointer Events, IE11. See https://coderwall.com/p/mfreca elem[bindMethod]('pointerdown', this); } else if (window.navigator.msPointerEnabled) { // IE10 Pointer Events elem[bindMethod]('MSPointerDown', this); } else { // listen for both, for devices like Chrome Pixel elem[bindMethod]('mousedown', this); elem[bindMethod]('touchstart', this); } }; // trigger handler methods for events proto.handleEvent = function(event) { var method = 'on' + event.type; if (this[method]) { this[method](event); } }; // returns the touch that we're keeping track of proto.getTouch = function(touches) { for (var i = 0; i < touches.length; i++) { var touch = touches[i]; if (touch.identifier == this.pointerIdentifier) { return touch; } } }; // ----- start event ----- // proto.onmousedown = function(event) { // dismiss clicks from right or middle buttons var button = event.button; if (button && (button !== 0 && button !== 1)) { return; } this._pointerDown(event, event); }; proto.ontouchstart = function(event) { this._pointerDown(event, event.changedTouches[0]); }; proto.onMSPointerDown = proto.onpointerdown = function(event) { this._pointerDown(event, event); }; /** * pointer start * @param {Event} event * @param {Event or Touch} pointer */ proto._pointerDown = function(event, pointer) { // dismiss other pointers if (this.isPointerDown) { return; } this.isPointerDown = true; // save pointer identifier to match up touch events this.pointerIdentifier = pointer.pointerId !== undefined ? // pointerId for pointer events, touch.indentifier for touch events pointer.pointerId : pointer.identifier; this.pointerDown(event, pointer); }; proto.pointerDown = function(event, pointer) { this._bindPostStartEvents(event); this.emitEvent('pointerDown', [event, pointer]); }; // hash of events to be bound after start event var postStartEvents = { mousedown: ['mousemove', 'mouseup'], touchstart: ['touchmove', 'touchend', 'touchcancel'], pointerdown: ['pointermove', 'pointerup', 'pointercancel'], MSPointerDown: ['MSPointerMove', 'MSPointerUp', 'MSPointerCancel'] }; proto._bindPostStartEvents = function(event) { if (!event) { return; } // get proper events to match start event var events = postStartEvents[event.type]; // bind events to node events.forEach(function(eventName) { window.addEventListener(eventName, this); }, this); // save these arguments this._boundPointerEvents = events; }; proto._unbindPostStartEvents = function() { // check for _boundEvents, in case dragEnd triggered twice (old IE8 bug) if (!this._boundPointerEvents) { return; } this._boundPointerEvents.forEach(function(eventName) { window.removeEventListener(eventName, this); }, this); delete this._boundPointerEvents; }; // ----- move event ----- // proto.onmousemove = function(event) { this._pointerMove(event, event); }; proto.onMSPointerMove = proto.onpointermove = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerMove(event, event); } }; proto.ontouchmove = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerMove(event, touch); } }; /** * pointer move * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerMove = function(event, pointer) { this.pointerMove(event, pointer); }; // public proto.pointerMove = function(event, pointer) { this.emitEvent('pointerMove', [event, pointer]); }; // ----- end event ----- // proto.onmouseup = function(event) { this._pointerUp(event, event); }; proto.onMSPointerUp = proto.onpointerup = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerUp(event, event); } }; proto.ontouchend = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerUp(event, touch); } }; /** * pointer up * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerUp = function(event, pointer) { this._pointerDone(); this.pointerUp(event, pointer); }; // public proto.pointerUp = function(event, pointer) { this.emitEvent('pointerUp', [event, pointer]); }; // ----- pointer done ----- // // triggered on pointer up & pointer cancel proto._pointerDone = function() { // reset properties this.isPointerDown = false; delete this.pointerIdentifier; // remove events this._unbindPostStartEvents(); this.pointerDone(); }; proto.pointerDone = noop; // ----- pointer cancel ----- // proto.onMSPointerCancel = proto.onpointercancel = function(event) { if (event.pointerId == this.pointerIdentifier) { this._pointerCancel(event, event); } }; proto.ontouchcancel = function(event) { var touch = this.getTouch(event.changedTouches); if (touch) { this._pointerCancel(event, touch); } }; /** * pointer cancel * @param {Event} event * @param {Event or Touch} pointer * @private */ proto._pointerCancel = function(event, pointer) { this._pointerDone(); this.pointerCancel(event, pointer); }; // public proto.pointerCancel = function(event, pointer) { this.emitEvent('pointerCancel', [event, pointer]); }; // ----- ----- // // utility function for getting x/y coords from event Unipointer.getPointerPoint = function(pointer) { return { x: pointer.pageX, y: pointer.pageY }; }; // ----- ----- // return Unipointer; })); function FreeSegment(a, b) { this.type = 'FreeSegment'; this.a = a; this.b = b; // orientations this.noon = { a: a, b: b }; this.three = { a: { x: -a.y, y: a.x }, b: { x: -b.y, y: b.x } }; this.six = { a: { x: -a.x, y: -a.y }, b: { x: -b.x, y: -b.y } }; this.nine = { a: { x: a.y, y: -a.x }, b: { x: b.y, y: -b.x } }; } var proto = FreeSegment.prototype; proto.connect = function(maze) { this.connectOrientation(maze, 'noon'); this.connectOrientation(maze, 'three'); this.connectOrientation(maze, 'six'); this.connectOrientation(maze, 'nine'); }; proto.connectOrientation = function(maze, orientation) { var line = this[orientation]; maze.connect(this, orientation, line.a); maze.connect(this, orientation, line.b); }; proto.render = function(ctx, center, gridSize) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.b.x * gridSize; var by = this.b.y * gridSize; ctx.strokeStyle = 'hsla(200, 80%, 50%, 0.7)'; ctx.lineWidth = gridSize * 0.6; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); }; function FixedSegment(a, b) { this.type = 'FixedSegment'; this.a = a; this.b = b; // orientations this.noon = { a: a, b: b }; this.three = { a: a, b: b }; this.six = { a: a, b: b }; this.nine = { a: a, b: b }; } var proto = FixedSegment.prototype; proto.connect = function(maze) { maze.connect(this, 'noon', this.a); maze.connect(this, 'noon', this.b); maze.connect(this, 'three', this.a); maze.connect(this, 'three', this.b); maze.connect(this, 'six', this.a); maze.connect(this, 'six', this.b); maze.connect(this, 'nine', this.a); maze.connect(this, 'nine', this.b); }; proto.render = function(ctx, center, gridSize) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.b.x * gridSize; var by = this.b.y * gridSize; ctx.strokeStyle = 'hsla(30, 100%, 40%, 0.6)'; ctx.lineWidth = gridSize * 0.8; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(ax, ay); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); }; function PivotSegment(a, b) { this.type = 'FreeSegment'; this.a = a; this.b = b; var dx = b.x - a.x; var dy = b.y - a.y; this.delta = { x: dx, y: dy }; // orientations this.noon = { a: a, b: b }; this.three = { a: { x: -a.y, y: a.x }, b: { x: -a.y + dx, y: a.x + dy } }; this.six = { a: { x: -a.x, y: -a.y }, b: { x: -a.x + dx, y: -a.y + dy } }; this.nine = { a: { x: a.y, y: -a.x }, b: { x: a.y + dx, y: -a.x + dy } }; } var proto = PivotSegment.prototype; proto.connect = function(maze) { this.connectOrientation(maze, 'noon'); this.connectOrientation(maze, 'three'); this.connectOrientation(maze, 'six'); this.connectOrientation(maze, 'nine'); }; proto.connectOrientation = function(maze, orientation) { var line = this[orientation]; if (maze.getIsPegOut(line.a) || maze.getIsPegOut(line.b)) { return; } maze.connect(this, orientation, line.a); maze.connect(this, orientation, line.b); }; proto.render = function(ctx, center, gridSize, mazeAngle) { var ax = this.a.x * gridSize; var ay = this.a.y * gridSize; var bx = this.delta.x * gridSize; var by = this.delta.y * gridSize; ctx.save(); ctx.translate(ax, ay); ctx.rotate(-mazeAngle); var color = 'hsla(150, 100%, 35%, 0.7)' // line ctx.strokeStyle = color; ctx.lineWidth = gridSize * 0.4; ctx.lineCap = 'round'; ctx.beginPath(); ctx.moveTo(0, 0); ctx.lineTo(bx, by); ctx.stroke(); ctx.closePath(); // circle ctx.fillStyle = color; ctx.beginPath(); ctx.arc(0, 0, gridSize * 0.4, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); ctx.restore(); }; // rotational physics model var TAU = Math.PI * 2; function FlyWheel(props) { this.angle = 0; this.friction = 0.95; this.velocity = 0; for (var prop in props) { this[prop] = props[prop]; } } var proto = FlyWheel.prototype; proto.integrate = function() { this.velocity *= this.friction; this.angle += this.velocity; this.normalizeAngle(); }; proto.applyForce = function(force) { this.velocity += force; }; proto.normalizeAngle = function() { this.angle = ((this.angle % TAU) + TAU) % TAU; }; proto.setAngle = function(theta) { var velo = theta - this.angle; if (velo > TAU / 2) { velo -= TAU; } else if (velo < -TAU / 2) { velo += TAU; } var force = velo - this.velocity; this.applyForce(force); }; var cub = { offset: { x: 0, y: 0 }, }; var pegOrienter = { noon: function(peg) { return peg; }, three: function(peg) { return { x: peg.y, y: -peg.x }; }, six: function(peg) { return { x: -peg.x, y: -peg.y }; }, nine: function(peg) { return { x: -peg.y, y: peg.x }; }, }; cub.setPeg = function(peg, orientation) { peg = pegOrienter[orientation](peg); this.peg = peg; this.noon = { x: peg.x, y: peg.y }; this.three = { x: -peg.y, y: peg.x }; this.six = { x: -peg.x, y: -peg.y }; this.nine = { x: peg.y, y: -peg.x }; }; var offsetOrienter = { noon: function(offset) { return offset; }, three: function(offset) { // flip y because its rendering return { x: offset.y, y: -offset.x }; }, six: function(offset) { return { x: -offset.x, y: -offset.y }; }, nine: function(offset) { // flip y because its rendering return { x: -offset.y, y: offset.x }; }, }; cub.setOffset = function(offset, orientation) { this.offset = offsetOrienter[orientation](offset); }; // ----- render ----- // cub.render = function(ctx, mazeCenter, gridSize, angle, isHovered) { function circle(x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); } // function eye( direction ) { // ctx.beginPath(); // ctx.arc( gridSize * 0.25 * direction, gridSize * 0.05, gridSize * 0.1, Math.PI, Math.PI*2 ); // ctx.fill(); // ctx.closePath(); // } var x = this.peg.x * gridSize + this.offset.x; var y = this.peg.y * gridSize + this.offset.y; ctx.save(); ctx.translate(mazeCenter.x, mazeCenter.y); ctx.rotate(angle); ctx.translate(x, y); ctx.rotate(-angle); ctx.fillStyle = 'hsla(330, 100%, 40%, 1)'; var scale = isHovered ? 1.15 : 1; ctx.scale(scale, scale); circle(0, 0, gridSize * 0.6); circle(gridSize * -0.45, gridSize * -0.35, gridSize * 0.3); circle(gridSize * 0.45, gridSize * -0.35, gridSize * 0.3); // // eyes // ctx.fillStyle = 'hsla(0, 0%, 0%, 0.8)'; // eye( 1 ); // eye( -1 ); // // nose // ctx.beginPath(); // ctx.arc( 0, gridSize * 0.15, gridSize * 0.1, 0, Math.PI ); // ctx.fill(); // ctx.closePath(); ctx.restore(); }; /* globals FlyWheel, FreeSegment, FixedSegment, PivotSegment, cub */ function Maze() { this.freeSegments = []; this.fixedSegments = []; this.pivotSegments = []; this.flyWheel = new FlyWheel({ friction: 0.8 }); this.connections = {}; } var proto = Maze.prototype; proto.loadText = function(text) { // separate --- sections, YAML front matter first, maze source second; var sections = text.split('---\n'); // YAML front matter var frontMatter = {}; if (sections.length > 1) { var frontMatter = getFrontMatter(sections[0]); } // set instruction var instructElem = document.querySelector('.instruction'); instructElem.innerHTML = frontMatter.instruction || ''; var mazeSrc = sections[sections.length - 1]; var lines = mazeSrc.split('\n'); var gridCount = this.gridCount = lines[0].length; var gridMax = this.gridMax = (gridCount - 1) / 2; for (var i = 0; i < lines.length; i++) { var line = lines[i]; var chars = line.split(''); for (var j = 0; j < chars.length; j++) { var character = chars[j]; var pegX = j - gridMax; var pegY = i - gridMax; var parseMethod = 'parse' + character; if (this[parseMethod]) { this[parseMethod](pegX, pegY); } } } }; function getFrontMatter(text) { if (!text) { return; } var frontMatter = {}; text.split('\n').forEach(function(line) { if (!line) { return; } var parts = line.split(':'); var key = parts[0].trim(); var value = parts[1].trim(); if (value === 'true') { value = true; // boolean true } else if (value === 'false') { value = false; // boolean false } else if (value.match(/$\d+(\.\d+)?^/)) { value = parseFloat(value, 10); // number } else if (value.match(/$\d+\.\d+^/)) { value = parseFloat(value); // float } frontMatter[key] = value; }); return frontMatter; } // -------------------------- parsers -------------------------- // // horizontal free segment proto['parse-'] = proto.addFreeHorizSegment = function(pegX, pegY) { var segment = getHorizSegment(pegX, pegY, FreeSegment); segment.connect(this); this.freeSegments.push(segment); }; // vertical free segment proto['parse|'] = proto.addFreeVertSegment = function(pegX, pegY) { var segment = getVertSegment(pegX, pegY, FreeSegment); segment.connect(this); this.freeSegments.push(segment); }; // horizontal fixed segment proto['parse='] = proto.addFixedHorizSegment = function(pegX, pegY) { var segment = getHorizSegment(pegX, pegY, FixedSegment); segment.connect(this); this.fixedSegments.push(segment); }; // vertical fixed segment proto['parse!'] = proto.addFixedVertSegment = function(pegX, pegY) { var segment = getVertSegment(pegX, pegY, FixedSegment); segment.connect(this); this.fixedSegments.push(segment); }; function getHorizSegment(pegX, pegY, Segment) { var a = { x: pegX + 1, y: pegY }; var b = { x: pegX - 1, y: pegY }; return new Segment(a, b); } function getVertSegment(pegX, pegY, Segment) { var a = { x: pegX, y: pegY + 1 }; var b = { x: pegX, y: pegY - 1 }; return new Segment(a, b); } // pivot up segment proto['parse^'] = function(pegX, pegY) { var a = { x: pegX, y: pegY + 1 }; var b = { x: pegX, y: pegY - 1 }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot down segment proto.parsev = proto.addPivotDownSegment = function(pegX, pegY) { var a = { x: pegX, y: pegY - 1 }; var b = { x: pegX, y: pegY + 1 }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot left segment proto['parse<'] = proto.addPivotLeftSegment = function(pegX, pegY) { var a = { x: pegX + 1, y: pegY }; var b = { x: pegX - 1, y: pegY }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // pivot right segment proto['parse>'] = proto.addPivotRightSegment = function(pegX, pegY) { var a = { x: pegX - 1, y: pegY }; var b = { x: pegX + 1, y: pegY }; var segment = new PivotSegment(a, b); segment.connect(this); this.pivotSegments.push(segment); }; // free & fixed horizontal proto['parse#'] = function(pegX, pegY) { this.addFreeHorizSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // free & fixed vertical proto.parse$ = function(pegX, pegY) { this.addFreeVertSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot up + fixed vertical proto.parseI = function(pegX, pegY) { this.addPivotUpSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot left + fixed horizontal proto.parseJ = function(pegX, pegY) { this.addPivotLeftSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // pivot down + fixed vertical proto.parseK = function(pegX, pegY) { this.addPivotDownSegment(pegX, pegY); this.addFixedVertSegment(pegX, pegY); }; // pivot right + fixed horizontal proto.parseL = function(pegX, pegY) { this.addPivotRightSegment(pegX, pegY); this.addFixedHorizSegment(pegX, pegY); }; // pivot up + free vertical proto.parseW = function(pegX, pegY) { this.addPivotUpSegment(pegX, pegY); this.addFreeVertSegment(pegX, pegY); }; // pivot left + free horizontal proto.parseA = function(pegX, pegY) { this.addPivotLeftSegment(pegX, pegY); this.addFreeHorizSegment(pegX, pegY); }; // pivot down + free vertical proto.parseS = function(pegX, pegY) { this.addPivotDownSegment(pegX, pegY); this.addFreeVertSegment(pegX, pegY); }; // pivot right + free horizontal proto.parseD = function(pegX, pegY) { this.addPivotRightSegment(pegX, pegY); this.addFreeHorizSegment(pegX, pegY); }; // start position proto['parse@'] = function(pegX, pegY) { this.startPosition = { x: pegX, y: pegY }; cub.setPeg(this.startPosition, 'noon'); }; // goal position proto['parse*'] = function(pegX, pegY) { this.goalPosition = { x: pegX, y: pegY }; }; // -------------------------- -------------------------- // proto.updateItemGroups = function() { var itemGroups = {}; this.items.forEach(function(item) { if (itemGroups[item.type] === undefined) { itemGroups[item.type] = []; } itemGroups[item.type].push(item); }); this.itemGroups = itemGroups; }; proto.connect = function(segment, orientation, position) { // flatten the key var key = orientation + ':' + position.x + ',' + position.y; var connection = this.connections[key]; // create connections array if not already there if (!connection) { connection = this.connections[key] = []; } if (connection.indexOf(segment) == -1) { connection.push(segment); } }; proto.getIsPegOut = function(peg) { return Math.abs(peg.x) > this.gridMax || Math.abs(peg.y) > this.gridMax; }; // -------------------------- -------------------------- // proto.update = function() { this.flyWheel.integrate(); var angle = this.flyWheel.angle; if (angle < TAU / 8) { this.orientation = 'noon'; } else if (angle < TAU * 3 / 8) { this.orientation = 'three'; } else if (angle < TAU * 5 / 8) { this.orientation = 'six'; } else if (angle < TAU * 7 / 8) { this.orientation = 'nine'; } else { this.orientation = 'noon'; } }; proto.attractAlignFlyWheel = function() { // attract towards var angle = this.flyWheel.angle; var target; if (angle < TAU / 8) { target = 0; } else if (angle < TAU * 3 / 8) { target = TAU / 4; } else if (angle < TAU * 5 / 8) { target = TAU / 2; } else if (angle < TAU * 7 / 8) { target = TAU * 3 / 4; } else { target = TAU; } var attraction = (target - angle) * 0.03; this.flyWheel.applyForce(attraction); }; var TAU = Math.PI * 2; var orientationAngles = { noon: 0, three: TAU / 4, six: TAU / 2, nine: TAU * 3 / 4 }; proto.render = function(ctx, center, gridSize, angle) { var orientationAngle = orientationAngles[angle]; var gridMax = this.gridMax; angle = orientationAngle !== undefined ? orientationAngle : angle || 0; ctx.save(); ctx.translate(center.x, center.y); // fixed segments this.fixedSegments.forEach(function(item) { item.render(ctx, center, gridSize); }); // rotation ctx.rotate(angle); ctx.lineWidth = gridSize * 0.2; ctx.lineCap = 'round'; ctx.lineJoin = 'round'; // axle ctx.lineWidth = gridSize * 0.2; ctx.strokeStyle = 'hsla(0, 0%, 50%, 0.2)'; // strokeCircle( ctx, 0, 0, gridSize/2 ); ctx.save(); ctx.rotate(Math.PI / 4); ctx.strokeRect(-gridSize / 5, -gridSize / 5, gridSize * 2 / 5, gridSize * 2 / 5); ctx.restore(); // start position ctx.strokeStyle = 'hsla(330, 100%, 50%, 0.3)'; ctx.lineWidth = gridSize * 0.15; var startX = this.startPosition.x * gridSize; var startY = this.startPosition.y * gridSize; strokeCircle(ctx, startX, startY, gridSize * 0.5); // pegs for (var pegY = -gridMax; pegY <= gridMax; pegY += 2) { for (var pegX = -gridMax; pegX <= gridMax; pegX += 2) { var pegXX = pegX * gridSize; var pegYY = pegY * gridSize; ctx.fillStyle = 'hsla(0, 0%, 50%, 0.6)'; fillCircle(ctx, pegXX, pegYY, gridSize * 0.15); } } // free segments this.freeSegments.forEach(function(segment) { segment.render(ctx, center, gridSize); }); // pivot segments this.pivotSegments.forEach(function(segment) { segment.render(ctx, center, gridSize, angle); }); // goal position var goalX = this.goalPosition.x * gridSize; var goalY = this.goalPosition.y * gridSize; ctx.lineWidth = gridSize * 0.3; ctx.fillStyle = 'hsla(50, 100%, 50%, 1)'; ctx.strokeStyle = 'hsla(50, 100%, 50%, 1)'; renderGoal(ctx, goalX, goalY, angle, gridSize * 0.6, gridSize * 0.3); ctx.restore(); }; function fillCircle(ctx, x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.fill(); ctx.closePath(); } function strokeCircle(ctx, x, y, radius) { ctx.beginPath(); ctx.arc(x, y, radius, 0, Math.PI * 2); ctx.stroke(); ctx.closePath(); } function renderGoal(ctx, x, y, mazeAngle, radiusA, radiusB) { ctx.save(); ctx.translate(x, y); ctx.rotate(-mazeAngle); ctx.beginPath(); for (var i = 0; i < 11; i++) { var theta = Math.PI * 2 * i / 10 + Math.PI / 2; var radius = i % 2 ? radiusA : radiusB; var dx = Math.cos(theta) * radius; var dy = Math.sin(theta) * radius; ctx[i ? 'lineTo' : 'moveTo'](dx, dy); } ctx.fill(); ctx.stroke(); ctx.closePath(); ctx.restore(); } function WinAnimation(x, y) { this.x = x; this.y = y; this.startTime = new Date(); this.isPlaying = true; } // length of animation in milliseconds var duration = 1000; var proto = WinAnimation.prototype; proto.update = function() { if (!this.isPlaying) { return; } this.t = ((new Date()) - this.startTime) / duration; this.isPlaying = this.t <= 1; }; proto.render = function(ctx) { if (!this.isPlaying) { return; } ctx.save(); ctx.translate(this.x, this.y); // big burst this.renderBurst(ctx); // small burst ctx.save(); ctx.scale(0.5, -0.5); this.renderBurst(ctx); ctx.restore(); ctx.restore(); }; proto.renderBurst = function(ctx) { var t = this.t; var dt = 1 - t; var easeT = 1 - dt * dt * dt * dt * dt * dt * dt * dt; var dy = easeT * -100; // scale math var st = 2 - this.t * 2; var scale = (1 - t * t * t) * 1.5; var spin = Math.PI * 1 * t * t * t; for (var i = 0; i < 5; i++) { ctx.save(); ctx.rotate(Math.PI * 2 / 5 * i); ctx.translate(0, dy); ctx.scale(scale, scale); ctx.rotate(spin); renderStar(ctx); ctx.restore(); } }; function renderStar(ctx) { ctx.lineWidth = 8; ctx.lineJoin = 'round'; ctx.lineCap = 'round'; ctx.fillStyle = 'hsla(50, 100%, 50%, 1)'; ctx.strokeStyle = 'hsla(50, 100%, 50%, 1)'; ctx.beginPath(); for (var i = 0; i < 11; i++) { var theta = Math.PI * 2 * i / 10 + Math.PI / 2; var radius = i % 2 ? 20 : 10; var dx = Math.cos(theta) * radius; var dy = Math.sin(theta) * radius; ctx[i ? 'lineTo' : 'moveTo'](dx, dy); } ctx.fill(); ctx.stroke(); ctx.closePath(); } /* globals cub, WinAnimation, Unipointer, Maze */ var docElem = document.documentElement; var canvas = document.querySelector('canvas'); var ctx = canvas.getContext('2d'); // size canvas; var canvasSize = Math.min(window.innerWidth, window.innerHeight); var canvasWidth = canvas.width = window.innerWidth * 2; var canvasHeight = canvas.height = window.innerHeight * 2; var maze; var PI = Math.PI; var TAU = PI * 2; var dragAngle = null; var cubDragMove = null; var isCubHovered = false; var isCubDragging = false; var winAnim; var unipointer = new Unipointer(); // ----- config ----- // var gridSize = Math.min(40, canvasSize / 12); var mazeCenter = { x: canvasWidth / 4, y: Math.min(gridSize * 8, canvasHeight / 4) }; // ----- instruction ----- // var instructElem = document.querySelector('.instruction'); instructElem.style.top = (mazeCenter.y + gridSize * 5.5) + 'px'; // ----- build level select, levels array ----- // var levelList = document.querySelector('.level-list'); var levelsElem = document.querySelector('.levels'); var levels = []; (function() { var levelPres = levelsElem.querySelectorAll('pre'); var fragment = document.createDocumentFragment(); for (var i = 0; i < levelPres.length; i++) { var pre = levelPres[i]; var listItem = document.createElement('li'); listItem.className = 'level-list__item'; var id = pre.id; listItem.innerHTML = '<span class="level-list__item__number">' + (i + 1) + '</span> <span class="level-list__item__blurb">' + pre.getAttribute('data-blurb') + '</span>' + '<span class="level-list__item__check">?</span>'; listItem.setAttribute('data-id', id); fragment.appendChild(listItem); levels.push(id); } levelList.appendChild(fragment); })(); // ----- levels button ----- // var levelSelectButton = document.querySelector('.level-select-button'); var nextLevelButton = document.querySelector('.next-level-button'); levelSelectButton.addEventListener('click', function() { levelList.classList.add('is-open'); }); nextLevelButton.style.top = (mazeCenter.y + gridSize * 5.5) + 'px'; // ----- level list ----- // levelList.addEventListener('click', function(event) { var item = getParent(event.target, '.level-list__item'); if (!item) { return; } // load level from id var id = item.getAttribute('data-id'); loadLevel(id); }); function getParent(elem, selector) { var parent = elem; while (parent != document.body) { if (parent.matches(selector)) { return parent; } parent = parent.parentNode; } } // ----- load level ----- // function loadLevel(id) { var pre = levelsElem.querySelector('#' + id); maze = new Maze(); maze.id = id; // load maze level from pre text maze.loadText(pre.textContent); // close ui levelList.classList.remove('is-open'); nextLevelButton.classList.remove('is-open'); window.scrollTo(0, 0); // highlight list var previousItem = levelList.querySelector('.is-playing'); if (previousItem) { previousItem.classList.remove('is-playing'); } levelList.querySelector('[data-id="' + id + '"]').classList.add('is-playing'); localStorage.setItem('currentLevel', id); } // ----- init ----- // var initialLevel = localStorage.getItem('currentLevel') || levels[0]; loadLevel(initialLevel); unipointer.bindStartEvent(canvas); window.addEventListener('mousemove', onHoverMousemove); animate(); window["reddahApi"].loadCompleted(); // -------------------------- drag rotation -------------------------- // var canvasLeft = canvas.offsetLeft; var canvasTop = canvas.offsetTop; var pointerBehavior; // ----- pointerBehavior ----- // var cubDrag = {}; var mazeRotate = {}; // ----- ----- // unipointer.pointerDown = function(event, pointer) { event.preventDefault(); var isInsideCub = getIsInsideCub(pointer); pointerBehavior = isInsideCub ? cubDrag : mazeRotate; pointerBehavior.pointerDown(event, pointer); this._bindPostStartEvents(event); }; function getIsInsideCub(pointer) { var position = getCanvasMazePosition(pointer); var cubDeltaX = Math.abs(position.x - cub[maze.orientation].x * gridSize); var cubDeltaY = Math.abs(position.y - cub[maze.orientation].y * gridSize); var bound = gridSize * 1.5; return cubDeltaX <= bound && cubDeltaY <= bound; } function getCanvasMazePosition(pointer) { var canvasX = pointer.pageX - canvasLeft; var canvasY = pointer.pageY - canvasTop; return { x: canvasX - mazeCenter.x, y: canvasY - mazeCenter.y, }; } // ----- unipointer ----- // unipointer.pointerMove = function(event, pointer) { pointerBehavior.pointerMove(event, pointer); }; unipointer.pointerUp = function(event, pointer) { pointerBehavior.pointerUp(event, pointer); this._unbindPostStartEvents(); }; // ----- cubDrag ----- // var dragStartPosition, dragStartPegPosition, rotatePointer; cubDrag.pointerDown = function(event, pointer) { var segments = getCubConnections(); if (!segments || !segments.length) { return; } isCubDragging = true; dragStartPosition = { x: pointer.pageX, y: pointer.pageY }; dragStartPegPosition = { x: cub[maze.orientation].x * gridSize + mazeCenter.x, y: cub[maze.orientation].y * gridSize + mazeCenter.y, }; docElem.classList.add('is-cub-dragging'); }; cubDrag.pointerMove = function(event, pointer) { if (!isCubDragging) { return; } cubDragMove = { x: pointer.pageX - dragStartPosition.x, y: pointer.pageY - dragStartPosition.y, }; }; cubDrag.pointerUp = function() { cubDragMove = null; docElem.classList.remove('is-cub-dragging'); isCubDragging = false; // set at peg cub.setOffset({ x: 0, y: 0 }, maze.orientation); // check level complete if (cub.peg.x == maze.goalPosition.x && cub.peg.y == maze.goalPosition.y) { completeLevel(); console.log('win'); } }; // ----- rotate ----- // var dragStartAngle, dragStartMazeAngle, moveAngle; var mazeRotate = {}; mazeRotate.pointerDown = function(event, pointer) { dragStartAngle = moveAngle = getDragAngle(pointer); dragStartMazeAngle = maze.flyWheel.angle; dragAngle = dragStartMazeAngle; rotatePointer = pointer; }; function getDragAngle(pointer) { var position = getCanvasMazePosition(pointer); return normalizeAngle(Math.atan2(position.y, position.x)); } mazeRotate.pointerMove = function(event, pointer) { rotatePointer = pointer; moveAngle = getDragAngle(pointer); var deltaAngle = moveAngle - dragStartAngle; dragAngle = normalizeAngle(dragStartMazeAngle + deltaAngle); }; mazeRotate.pointerUp = function() { dragAngle = null; rotatePointer = null; }; // ----- animate ----- // function animate() { update(); render(); requestAnimationFrame(animate); } // ----- update ----- // function update() { // drag cub dragCub(); // rotate grid if (dragAngle) { maze.flyWheel.setAngle(dragAngle); } else { maze.attractAlignFlyWheel(); } maze.update(); if (winAnim) { winAnim.update(); } } function dragCub() { if (!cubDragMove) { return; } var segments = getCubConnections(); var dragPosition = { x: dragStartPegPosition.x + cubDragMove.x, y: dragStartPegPosition.y + cubDragMove.y, }; // set peg position var dragPeg = getDragPeg(segments, dragPosition); cub.setPeg(dragPeg, maze.orientation); // set drag offset var cubDragPosition = getDragPosition(segments, dragPosition); var cubPosition = getCubPosition(); var offset = { x: cubDragPosition.x - cubPosition.x, y: cubDragPosition.y - cubPosition.y, }; cub.setOffset(offset, maze.orientation); } function getCubPosition() { return { x: cub[maze.orientation].x * gridSize + mazeCenter.x, y: cub[maze.orientation].y * gridSize + mazeCenter.y, }; } function getCubConnections() { var pegX = cub[maze.orientation].x; var pegY = cub[maze.orientation].y; var key = maze.orientation + ':' + pegX + ',' + pegY; return maze.connections[key]; } function getDragPosition(segments, dragPosition) { if (segments.length == 1) { return getSegmentDragPosition(segments[0], dragPosition); } // get closest segments positions var dragCandidates = segments.map(function(segment) { var position = getSegmentDragPosition(segment, dragPosition); return { position: position, distance: getDistance(dragPosition, position), }; }); dragCandidates.sort(distanceSorter); return dragCandidates[0].position; } function getSegmentDragPosition(segment, dragPosition) { var line = segment[maze.orientation]; var isHorizontal = line.a.y == line.b.y; var x, y; if (isHorizontal) { x = getSegmentDragCoord(line, 'x', dragPosition); y = line.a.y * gridSize + mazeCenter.y; } else { x = line.a.x * gridSize + mazeCenter.x; y = getSegmentDragCoord(line, 'y', dragPosition); } return { x: x, y: y }; } function getSegmentDragCoord(line, axis, dragPosition) { var a = line.a[axis]; var b = line.b[axis]; var min = a < b ? a : b; var max = a > b ? a : b; min = min * gridSize + mazeCenter[axis]; max = max * gridSize + mazeCenter[axis]; return Math.max(min, Math.min(max, dragPosition[axis])); } function distanceSorter(a, b) { return a.distance - b.distance; } function getDragPeg(segments, dragPosition) { var pegs = []; segments.forEach(function(segment) { var line = segment[maze.orientation]; addPegPoint(line.a, pegs); addPegPoint(line.b, pegs); }); var pegCandidates = pegs.map(function(pegKey) { // revert string back to object with integers var parts = pegKey.split(','); var peg = { x: parseInt(parts[0], 10), y: parseInt(parts[1], 10), }; var pegPosition = { x: peg.x * gridSize + mazeCenter.x, y: peg.y * gridSize + mazeCenter.y, }; return { peg: peg, distance: getDistance(dragPosition, pegPosition), }; }); pegCandidates.sort(distanceSorter); return pegCandidates[0].peg; } function getDistance(a, b) { var dx = b.x - a.x; var dy = b.y - a.y; return Math.sqrt(dx * dx + dy * dy); } function addPegPoint(point, pegs) { // use strings to prevent dupes var key = point.x + ',' + point.y; if (pegs.indexOf(key) == -1) { pegs.push(key); } } // ----- hover ----- // function onHoverMousemove(event) { var isInsideCub = getIsInsideCub(event); if (isInsideCub == isCubHovered) { return; } // change isCubHovered = isInsideCub; var changeClass = isInsideCub ? 'add' : 'remove'; docElem.classList[changeClass]('is-cub-hovered'); } // ----- render ----- // function render() { ctx.clearRect(0, 0, canvasWidth, canvasHeight); ctx.save(); ctx.scale(2, 2); renderRotateHandle(); // maze maze.render(ctx, mazeCenter, gridSize, maze.flyWheel.angle); // win animation if (winAnim) { winAnim.render(ctx); } // cub var isHovered = isCubHovered || isCubDragging; cub.render(ctx, mazeCenter, gridSize, maze.flyWheel.angle, isHovered); ctx.restore(); } function renderRotateHandle() { // rotate handle if (!rotatePointer) { return; } ctx.lineCap = 'round'; ctx.lineJoin = 'round'; ctx.lineWidth = gridSize * 0.5; var color = '#EEE'; ctx.strokeStyle = color; ctx.fillStyle = color; // pie slice ctx.beginPath(); var pieRadius = maze.gridMax * gridSize; ctx.moveTo(mazeCenter.x, mazeCenter.y); var pieDirection = normalizeAngle(normalizeAngle(moveAngle) - normalizeAngle(dragStartAngle)) > TAU / 2; ctx.arc(mazeCenter.x, mazeCenter.y, pieRadius, dragStartAngle, moveAngle, pieDirection); ctx.lineTo(mazeCenter.x, mazeCenter.y); ctx.stroke(); ctx.fill(); ctx.closePath(); } // -------------------------- completeLevel -------------------------- // var completedLevels = localStorage.getItem('completedLevels'); completedLevels = completedLevels ? completedLevels.split(',') : []; completedLevels.forEach(function(id) { levelList.querySelector('[data-id="' + id + '"]').classList.add('did-complete'); }); function completeLevel() { var cubPosition = getCubPosition(); winAnim = new WinAnimation(cubPosition.x, cubPosition.y); levelList.querySelector('[data-id="' + maze.id + '"]').classList.add('did-complete'); if (completedLevels.indexOf(maze.id) == -1) { completedLevels.push(maze.id); localStorage.setItem('completedLevels', completedLevels.join(',')); } if (getNextLevel()) { setTimeout(function() { nextLevelButton.classList.add('is-open'); }, 1000); } } function getNextLevel() { var index = levels.indexOf(maze.id); return levels[index + 1]; } // -------------------------- next level -------------------------- // nextLevelButton.addEventListener('click', function() { var nextLevel = getNextLevel(); if (nextLevel) { loadLevel(nextLevel); } }); // -------------------------- utils -------------------------- // function normalizeAngle(angle) { return ((angle % TAU) + TAU) % TAU; }

      * { box-sizing: border-box; } body { margin: 0; padding: 0; overflow-x: hidden; font-family: 'Avenir Next', Avenir, sans-serif; font-weight: 500; font-size: 20px; color: #555; } canvas { cursor: move; display: block; position: absolute; max-width: 100%; left: 0; top: 0; } .is-cub-hovered, .is-cub-hovered canvas { cursor: -webkit-grab; cursor: grab; } .is-cub-dragging, .is-cub-dragging canvas { cursor: -webkit-grabbing; cursor: grabbing; } .instruction { padding: 0 10px; text-align: center; position: absolute; width: 100%; padding-bottom: 40px; } .button { font-family: 'Avenir Next', Avenir, sans-serif; font-weight: 500; font-size: 20px; padding: 5px 15px; margin: 10px; background: #BBB; color: white; border-radius: 5px; border: none; cursor: pointer; } .button:hover { background: #09F; } .top-bar { position: absolute; left: 0; top: 0; } .level-select-button { position: relative; z-index: 2; /* above canvas */ } .next-level-button { position: absolute; left: 50%; -webkit-transform: translateX(-110px) scale(0.5); transform: translateX(-110px) scale(0.5); opacity: 0; background: #09F; width: 200px; height: 80px; pointer-events: none; -webkit-transition: -webkit-transform 0.2s, opacity 0.2s; transition: transform 0.2s, opacity 0.2s; } .next-level-button:hover { background: #2BF; } .next-level-button.is-open { display: inline-block; pointer-events: auto; -webkit-transform: translateX(-110px) scale(1); transform: translate(-110px) scale(1); opacity: 1; } /* ---- level list ---- */ .level-list { position: absolute; background: #EEE; width: 100%; min-height: 100%; left: 0; top: 0; margin: 0; list-style: none; padding: 10px; z-index: 3; /* above canvas, level select button */ left: -100%; transition: left 0.2s; } .level-list.is-open { left: 0; } .level-list__item { display: inline-block; background: #DDD; margin: 5px; padding: 10px; width: 80px; height: 80px; text-align: center; border-radius: 10px; position: relative; } .level-list__item:hover { color: #09F; cursor: pointer; background: white; } .level-list__item.is-playing { background: #09F; color: white; } .level-list__item__number { display: block; font-size: 30px; line-height: 35px; } .level-list__item__blurb { display: block; font-size: 16px; } .level-list__item__check { position: absolute; right: -10px; top: -10px; width: 30px; line-height: 30px; background: #555; border-radius: 15px; color: white; display: none; } .level-list__item.did-complete .level-list__item__check { display: block; } /* ---- level pres ---- */ .levels { display: none; }
      submitted 7 years ago ago by 346e369614c2418496fad67c1453fada
      0 comments
      picture 

        blurb: Tutorial
instruction: Drag cub to star
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        118
        up vote 0 down vote

        window["reddahApi"].loadCompleted()

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        submitted 7 years ago ago by 877285a6b9fb4b5cbe9dd43d11700177
        0 comments
        picture
        119
        up vote 0 down vote

        window["reddahApi"].loadCompleted()

        .test{}
        submitted 7 years ago ago by 4b13fb79350e40a6baf4286bbae12a62
        0 comments
        picture
        123
        up vote 0 down vote
        picture

        Netherlands captain Virgil van Dijk consoles grieving referee

        Netherlands captain Virgil van Dijk consoles grieving referee
        football submitted 8 years ago ago by b8c40ad899c64f9a88cfca87d90e5c34
        0 comments
        picture

        Netherlands captain Virgil van Dijk has been praised for his display of compassion to grieving referee Ovidiu Hategan in the aftermath of his last-gasp equalizer against Germany.

        The Romanian official's mother had recently passed away but the 38-year-old decided to still take charge of the crucial Nations League clash.

        124
        up vote 2 down vote
        picture

        Fisherman jumps on a thrashing whale's back to save its life

        Fisherman jumps on a thrashing whale's back to save its life
        earth submitted 8 years ago ago by b8c40ad899c64f9a88cfca87d90e5c34
        0 comments
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        The sight of a massive humpback whale thrashing in the sea doesn't usually elicit an invitation to splash around with him.

        Humpbacks can weigh in at a whopping 40 tons and stretch 50 feet from nose to tail. That's the kind of heft that easily overturns small boats. And woe to anyone who should jump on the back of one of these behemoths.

        But that's just what Sam Synstelien did when he saw a humpback in distress in Central California's Morro Bay this week. The animal was hopelessly tangled in a rope that was attached to a buoy.

        Synstelien, along with crewmate Nicholas Taron, had already tried reporting the unfortunate whale to the U.S. Coast Guard — but they were told it would be hours before rescuers could be dispatched.

        Hours, the commercial fishermen figured, this whale didn't have.

        "If we wanted the whale to survive we had to go get it," Taron later told Inside Edition. "We thought there was no other option for the whale; we decided to go for it. We were so pumped up full of adrenaline, I don't think we were that scared."

        Easy for Taron to say, of course. His role in the rescue was mostly in the enthusiastic cheering department.

        In the clip, you can hear him quarterbacking the operation from the side of the boat while filming the entire operation.

        "Swim! Swim!" he yells. "Move! Just get it! Get it!"

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        World's best ski resorts in 2018

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        World's best ski resorts in 2018
        travel submitted 8 years ago ago by b8c40ad899c64f9a88cfca87d90e5c34
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        If there's one takeaway from this year's World's Ski Awards, it's that Europe is the premier skiing destination in the world.

        Again.

        This year marks the sixth for the awards, given at a glitzy ceremony in Austria, at the legendary Kitzbühel resort, this past weekend. Ski representatives from Europe, Asia, North America, South America and Australasia gathered in Austria for three days of alpine events, capped off with the awards ceremony. Voting was done online by both ski professionals and the general public.

        Nearly all of the top honors went to European resorts, hotels and operators.

        For the third consecutive year, Val Thorens in the French Alps was named best ski resort in the world. Europe's highest resort, Val Thorens is part of the 3 Vallees ski area (Courchevel and Meribel are the other two), with ski offerings for all levels and much on offer off the mountain too.

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