mirror of
https://github.com/liabru/matter-js.git
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1320 lines
No EOL
44 KiB
JavaScript
1320 lines
No EOL
44 KiB
JavaScript
(function() {
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// Matter aliases
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var Engine = Matter.Engine,
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World = Matter.World,
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Bodies = Matter.Bodies,
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Body = Matter.Body,
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Composite = Matter.Composite,
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Composites = Matter.Composites,
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Common = Matter.Common,
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Constraint = Matter.Constraint,
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RenderPixi = Matter.RenderPixi,
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Events = Matter.Events,
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Bounds = Matter.Bounds,
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Vector = Matter.Vector,
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Vertices = Matter.Vertices,
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MouseConstraint = Matter.MouseConstraint,
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Mouse = Matter.Mouse,
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Query = Matter.Query;
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// MatterTools aliases
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if (window.MatterTools) {
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var Gui = MatterTools.Gui,
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Inspector = MatterTools.Inspector;
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}
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var Demo = {};
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var _engine,
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_gui,
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_inspector,
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_sceneName,
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_mouseConstraint,
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_sceneEvents = [],
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_useInspector = window.location.hash.indexOf('-inspect') !== -1,
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_isMobile = /(ipad|iphone|ipod|android)/gi.test(navigator.userAgent);
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// initialise the demo
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Demo.init = function() {
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var container = document.getElementById('canvas-container');
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// some example engine options
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var options = {
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positionIterations: 6,
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velocityIterations: 4,
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enableSleeping: false
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};
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// create a Matter engine
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// NOTE: this is actually Matter.Engine.create(), see the aliases at top of this file
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_engine = Engine.create(container, options);
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// add a mouse controlled constraint
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_mouseConstraint = MouseConstraint.create(_engine);
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World.add(_engine.world, _mouseConstraint);
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// run the engine
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Engine.run(_engine);
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// default scene function name
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_sceneName = 'mixed';
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// get the scene function name from hash
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if (window.location.hash.length !== 0)
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_sceneName = window.location.hash.replace('#', '').replace('-inspect', '');
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// set up a scene with bodies
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Demo[_sceneName]();
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// set up demo interface (see end of this file)
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Demo.initControls();
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};
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// call init when the page has loaded fully
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if (window.addEventListener) {
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window.addEventListener('load', Demo.init);
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} else if (window.attachEvent) {
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window.attachEvent('load', Demo.init);
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}
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// each demo scene is set up in its own function, see below
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Demo.mixed = function() {
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var _world = _engine.world;
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Demo.reset();
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var stack = Composites.stack(20, 20, 15, 4, 0, 0, function(x, y, column, row) {
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var sides = Math.round(Common.random(1, 8));
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// triangles can be a little unstable, so avoid until fixed
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// TODO: make triangles more stable
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sides = (sides === 3) ? 4 : sides;
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// round the edges of some bodies
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var chamfer = null;
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if (sides > 2 && Common.random() > 0.7) {
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chamfer = {
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radius: 10
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};
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}
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switch (Math.round(Common.random(0, 1))) {
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case 0:
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if (Common.random() < 0.8) {
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return Bodies.rectangle(x, y, Common.random(25, 50), Common.random(25, 50), { chamfer: chamfer });
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} else {
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return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(25, 30), { chamfer: chamfer });
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}
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break;
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case 1:
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return Bodies.polygon(x, y, sides, Common.random(25, 50), { chamfer: chamfer });
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}
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});
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World.add(_world, stack);
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var renderOptions = _engine.render.options;
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};
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Demo.slingshot = function() {
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var _world = _engine.world;
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Demo.reset();
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_world.bodies = [];
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var ground = Bodies.rectangle(395, 600, 815, 50, { isStatic: true, render: { visible: false } }),
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rockOptions = { density: 0.004, render: { sprite: { texture: './img/rock.png' } } },
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rock = Bodies.polygon(170, 450, 8, 20, rockOptions),
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anchor = { x: 170, y: 450 },
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elastic = Constraint.create({
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pointA: anchor,
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bodyB: rock,
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stiffness: 0.05,
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render: {
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lineWidth: 5,
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strokeStyle: '#dfa417'
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}
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});
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var pyramid = Composites.pyramid(500, 300, 9, 10, 0, 0, function(x, y, column, row) {
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var texture = column % 2 === 0 ? './img/block.png' : './img/block-2.png';
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return Bodies.rectangle(x, y, 25, 40, { render: { sprite: { texture: texture } } });
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});
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var ground2 = Bodies.rectangle(610, 250, 200, 20, {
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isStatic: true,
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render: {
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fillStyle: '#edc51e',
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strokeStyle: '#b5a91c'
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}
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});
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var pyramid2 = Composites.pyramid(550, 0, 5, 10, 0, 0, function(x, y, column, row) {
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var texture = column % 2 === 0 ? './img/block.png' : './img/block-2.png';
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return Bodies.rectangle(x, y, 25, 40, { render: { sprite: { texture: texture } } });
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});
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World.add(_engine.world, [ground, pyramid, ground2, pyramid2, rock, elastic]);
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Events.on(_engine, 'tick', function(event) {
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if (_engine.input.mouse.button === -1 && (rock.position.x > 190 || rock.position.y < 430)) {
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rock = Bodies.polygon(170, 450, 7, 20, rockOptions);
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World.add(_engine.world, rock);
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elastic.bodyB = rock;
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}
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});
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var renderOptions = _engine.render.options;
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renderOptions.wireframes = false;
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renderOptions.showAngleIndicator = false;
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renderOptions.background = './img/background.png';
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};
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Demo.rounded = function() {
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var _world = _engine.world;
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Demo.reset();
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World.add(_world, [
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Bodies.rectangle(200, 200, 100, 100, {
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chamfer: {
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radius: 20
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}
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}),
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Bodies.rectangle(300, 200, 100, 100, {
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chamfer: {
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radius: [90, 0, 0, 0]
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}
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}),
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Bodies.rectangle(400, 200, 200, 200, {
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chamfer: {
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radius: [150, 20, 40, 20]
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}
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}),
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Bodies.rectangle(200, 200, 200, 200, {
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chamfer: {
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radius: [150, 20, 150, 20]
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}
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}),
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Bodies.rectangle(300, 200, 200, 50, {
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chamfer: {
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radius: [25, 25, 0, 0]
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}
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}),
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Bodies.polygon(200, 100, 8, 80, {
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chamfer: {
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radius: 30
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}
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}),
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Bodies.polygon(300, 100, 5, 80, {
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chamfer: {
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radius: [10, 40, 20, 40, 10]
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}
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}),
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Bodies.polygon(400, 200, 3, 50, {
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chamfer: {
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radius: [20, 0, 20]
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}
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})
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]);
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var renderOptions = _engine.render.options;
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renderOptions.showAxes = true;
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renderOptions.showCollisions = true;
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};
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Demo.views = function() {
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var _world = _engine.world;
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Demo.reset();
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var stack = Composites.stack(20, 20, 15, 4, 0, 0, function(x, y, column, row) {
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switch (Math.round(Common.random(0, 1))) {
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case 0:
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if (Common.random() < 0.8) {
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return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50));
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} else {
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return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30));
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}
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break;
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case 1:
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var sides = Math.round(Common.random(1, 8));
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sides = (sides === 3) ? 4 : sides;
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return Bodies.polygon(x, y, sides, Common.random(20, 50));
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}
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});
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World.add(_world, stack);
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// get the centre of the viewport
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var viewportCentre = {
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x: _engine.render.options.width * 0.5,
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y: _engine.render.options.height * 0.5
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};
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// make the world bounds a little bigger than the render bounds
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_world.bounds.min.x = -300;
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_world.bounds.min.y = -300;
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_world.bounds.max.x = 1100;
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_world.bounds.max.y = 900;
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// keep track of current bounds scale (view zoom)
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var boundsScaleTarget = 1,
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boundsScale = {
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x: 1,
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y: 1
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};
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// use the engine tick event to control our view
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_sceneEvents.push(
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Events.on(_engine, 'beforeTick', function() {
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var world = _engine.world,
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mouse = _engine.input.mouse,
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render = _engine.render,
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translate;
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// mouse wheel controls zoom
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var scaleFactor = mouse.wheelDelta * -0.1;
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if (scaleFactor !== 0) {
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if ((scaleFactor < 0 && boundsScale.x >= 0.6) || (scaleFactor > 0 && boundsScale.x <= 1.4)) {
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boundsScaleTarget += scaleFactor;
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}
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}
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// if scale has changed
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if (Math.abs(boundsScale.x - boundsScaleTarget) > 0.01) {
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// smoothly tween scale factor
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scaleFactor = (boundsScaleTarget - boundsScale.x) * 0.2;
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boundsScale.x += scaleFactor;
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boundsScale.y += scaleFactor;
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// scale the render bounds
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render.bounds.max.x = render.bounds.min.x + render.options.width * boundsScale.x;
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render.bounds.max.y = render.bounds.min.y + render.options.height * boundsScale.y;
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// translate so zoom is from centre of view
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translate = {
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x: render.options.width * scaleFactor * -0.5,
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y: render.options.height * scaleFactor * -0.5
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};
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Bounds.translate(render.bounds, translate);
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// update mouse
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Mouse.setScale(mouse, boundsScale);
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Mouse.setOffset(mouse, render.bounds.min);
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}
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// get vector from mouse relative to centre of viewport
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var deltaCentre = Vector.sub(mouse.absolute, viewportCentre),
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centreDist = Vector.magnitude(deltaCentre);
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// translate the view if mouse has moved over 50px from the centre of viewport
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if (centreDist > 50) {
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// create a vector to translate the view, allowing the user to control view speed
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var direction = Vector.normalise(deltaCentre),
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speed = Math.min(10, Math.pow(centreDist - 50, 2) * 0.0002);
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translate = Vector.mult(direction, speed);
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// prevent the view moving outside the world bounds
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if (render.bounds.min.x + translate.x < world.bounds.min.x)
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translate.x = world.bounds.min.x - render.bounds.min.x;
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if (render.bounds.max.x + translate.x > world.bounds.max.x)
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translate.x = world.bounds.max.x - render.bounds.max.x;
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if (render.bounds.min.y + translate.y < world.bounds.min.y)
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translate.y = world.bounds.min.y - render.bounds.min.y;
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if (render.bounds.max.y + translate.y > world.bounds.max.y)
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translate.y = world.bounds.max.y - render.bounds.max.y;
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// move the view
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Bounds.translate(render.bounds, translate);
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// we must update the mouse too
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Mouse.setOffset(mouse, render.bounds.min);
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}
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})
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);
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// must enable renderOptions.hasBounds for views to work
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var renderOptions = _engine.render.options;
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renderOptions.hasBounds = true;
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};
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Demo.mixedSolid = function() {
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var _world = _engine.world;
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Demo.reset();
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var stack = Composites.stack(50, 50, 12, 3, 0, 0, function(x, y, column, row) {
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switch (Math.round(Common.random(0, 1))) {
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case 0:
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if (Common.random() < 0.8) {
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return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50));
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} else {
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return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30));
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}
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break;
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case 1:
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return Bodies.polygon(x, y, Math.round(Common.random(1, 8)), Common.random(20, 50));
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}
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});
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World.add(_world, stack);
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var renderOptions = _engine.render.options;
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renderOptions.wireframes = false;
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renderOptions.showAngleIndicator = false;
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if (window.chrome)
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renderOptions.showShadows = true;
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};
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Demo.chains = function() {
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var _world = _engine.world,
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groupId = Body.nextGroupId();
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Demo.reset();
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var ropeA = Composites.stack(200, 100, 5, 2, 10, 10, function(x, y, column, row) {
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return Bodies.rectangle(x, y, 50, 20, { groupId: groupId });
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});
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Composites.chain(ropeA, 0.5, 0, -0.5, 0, { stiffness: 0.8, length: 2 });
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Composite.add(ropeA, Constraint.create({
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bodyB: ropeA.bodies[0],
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pointB: { x: -25, y: 0 },
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pointA: { x: 200, y: 100 },
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stiffness: 0.5
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}));
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World.add(_world, ropeA);
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groupId = Body.nextGroupId();
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var ropeB = Composites.stack(500, 100, 5, 2, 10, 10, function(x, y, column, row) {
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return Bodies.circle(x, y, 20, { groupId: groupId });
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});
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Composites.chain(ropeB, 0.5, 0, -0.5, 0, { stiffness: 0.8, length: 2 });
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Composite.add(ropeB, Constraint.create({
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bodyB: ropeB.bodies[0],
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pointB: { x: -20, y: 0 },
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pointA: { x: 500, y: 100 },
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stiffness: 0.5
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}));
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World.add(_world, ropeB);
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};
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Demo.bridge = function() {
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var _world = _engine.world,
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groupId = Body.nextGroupId();
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Demo.reset();
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var bridge = Composites.stack(150, 300, 9, 1, 10, 10, function(x, y, column, row) {
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return Bodies.rectangle(x, y, 50, 20, { groupId: groupId });
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});
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Composites.chain(bridge, 0.5, 0, -0.5, 0, { stiffness: 0.9 });
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var stack = Composites.stack(200, 40, 6, 3, 0, 0, function(x, y, column, row) {
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return Bodies.polygon(x, y, Math.round(Common.random(1, 8)), Common.random(20, 40));
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});
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World.add(_world, [
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bridge,
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Bodies.rectangle(80, 440, 120, 280, { isStatic: true }),
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Bodies.rectangle(720, 440, 120, 280, { isStatic: true }),
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Constraint.create({ pointA: { x: 140, y: 300 }, bodyB: bridge.bodies[0], pointB: { x: -25, y: 0 } }),
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Constraint.create({ pointA: { x: 660, y: 300 }, bodyB: bridge.bodies[8], pointB: { x: 25, y: 0 } }),
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stack
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]);
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};
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Demo.car = function() {
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var _world = _engine.world,
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scale;
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Demo.reset();
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scale = 0.9;
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World.add(_world, Composites.car(150, 100, 100 * scale, 40 * scale, 30 * scale));
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scale = 0.8;
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World.add(_world, Composites.car(350, 300, 100 * scale, 40 * scale, 30 * scale));
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World.add(_world, [
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Bodies.rectangle(200, 150, 650, 20, { isStatic: true, angle: Math.PI * 0.06 }),
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Bodies.rectangle(500, 350, 650, 20, { isStatic: true, angle: -Math.PI * 0.06 }),
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Bodies.rectangle(340, 580, 700, 20, { isStatic: true, angle: Math.PI * 0.04 })
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]);
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var renderOptions = _engine.render.options;
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renderOptions.showAngleIndicator = true;
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renderOptions.showCollisions = true;
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};
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Demo.friction = function() {
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var _world = _engine.world;
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Demo.reset();
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World.add(_world, [
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Bodies.rectangle(300, 180, 700, 20, { isStatic: true, angle: Math.PI * 0.06 }),
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Bodies.rectangle(300, 70, 40, 40, { friction: 0.001 })
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]);
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World.add(_world, [
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Bodies.rectangle(300, 350, 700, 20, { isStatic: true, angle: Math.PI * 0.06 }),
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Bodies.rectangle(300, 250, 40, 40, { friction: 0.0005 })
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]);
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World.add(_world, [
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Bodies.rectangle(300, 520, 700, 20, { isStatic: true, angle: Math.PI * 0.06 }),
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Bodies.rectangle(300, 430, 40, 40, { friction: 0 })
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]);
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var renderOptions = _engine.render.options;
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renderOptions.showAngleIndicator = true;
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renderOptions.showCollisions = true;
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};
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Demo.airFriction = function() {
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var _world = _engine.world;
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Demo.reset();
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World.add(_world, [
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Bodies.rectangle(200, 100, 60, 60, { frictionAir: 0.001 }),
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Bodies.rectangle(400, 100, 60, 60, { frictionAir: 0.05 }),
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Bodies.rectangle(600, 100, 60, 60, { frictionAir: 0.1 })
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]);
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var renderOptions = _engine.render.options;
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renderOptions.showAngleIndicator = true;
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renderOptions.showCollisions = true;
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};
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Demo.sleeping = function() {
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var _world = _engine.world;
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|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(50, 50, 12, 3, 0, 0, function(x, y, column, row) {
|
|
switch (Math.round(Common.random(0, 1))) {
|
|
|
|
case 0:
|
|
if (Common.random() < 0.8) {
|
|
return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50));
|
|
} else {
|
|
return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30));
|
|
}
|
|
break;
|
|
case 1:
|
|
return Bodies.polygon(x, y, Math.round(Common.random(1, 8)), Common.random(20, 50));
|
|
|
|
}
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
_engine.enableSleeping = true;
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.broadphase = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(20, 20, 20, 5, 0, 0, function(x, y, column, row) {
|
|
switch (Math.round(Common.random(0, 1))) {
|
|
|
|
case 0:
|
|
if (Common.random() < 0.8) {
|
|
return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50));
|
|
} else {
|
|
return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30));
|
|
}
|
|
break;
|
|
case 1:
|
|
return Bodies.polygon(x, y, Math.round(Common.random(1, 8)), Common.random(20, 50));
|
|
|
|
}
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showBroadphase = true;
|
|
};
|
|
|
|
Demo.gravity = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
_engine.world.gravity.y = -1;
|
|
|
|
var stack = Composites.stack(20, 20, 20, 5, 0, 0, function(x, y, column, row) {
|
|
switch (Math.round(Common.random(0, 1))) {
|
|
|
|
case 0:
|
|
if (Common.random() < 0.8) {
|
|
return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50));
|
|
} else {
|
|
return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30));
|
|
}
|
|
break;
|
|
case 1:
|
|
return Bodies.polygon(x, y, Math.round(Common.random(1, 8)), Common.random(20, 50));
|
|
|
|
}
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.avalanche = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(20, 20, 20, 5, 0, 0, function(x, y, column, row) {
|
|
return Bodies.circle(x, y, Common.random(10, 20), { friction: 0.00001, restitution: 0.5, density: 0.001 });
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
World.add(_world, [
|
|
Bodies.rectangle(200, 150, 700, 20, { isStatic: true, angle: Math.PI * 0.06 }),
|
|
Bodies.rectangle(500, 350, 700, 20, { isStatic: true, angle: -Math.PI * 0.06 }),
|
|
Bodies.rectangle(340, 580, 700, 20, { isStatic: true, angle: Math.PI * 0.04 })
|
|
]);
|
|
};
|
|
|
|
Demo.newtonsCradle = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var cradle = Composites.newtonsCradle(280, 100, 5, 30, 200);
|
|
World.add(_world, cradle);
|
|
Body.translate(cradle.bodies[0], { x: -180, y: -100 });
|
|
|
|
cradle = Composites.newtonsCradle(280, 380, 7, 20, 140);
|
|
World.add(_world, cradle);
|
|
Body.translate(cradle.bodies[0], { x: -140, y: -100 });
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showVelocity = true;
|
|
};
|
|
|
|
Demo.timescale = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var explosion = function(engine) {
|
|
var bodies = Composite.allBodies(engine.world);
|
|
|
|
for (var i = 0; i < bodies.length; i++) {
|
|
var body = bodies[i];
|
|
|
|
if (!body.isStatic && body.position.y >= 500) {
|
|
var forceMagnitude = 0.04 * body.mass;
|
|
|
|
Body.applyForce(body, { x: 0, y: 0 }, {
|
|
x: (forceMagnitude + Common.random() * forceMagnitude) * Common.choose([1, -1]),
|
|
y: -forceMagnitude + Common.random() * -forceMagnitude
|
|
});
|
|
}
|
|
}
|
|
};
|
|
|
|
var timeScaleTarget = 1,
|
|
counter = 0;
|
|
|
|
_sceneEvents.push(
|
|
Events.on(_engine, 'tick', function(event) {
|
|
// tween the timescale for bullet time slow-mo
|
|
_engine.timing.timeScale += (timeScaleTarget - _engine.timing.timeScale) * 0.05;
|
|
|
|
counter += 1;
|
|
|
|
// every 1.5 sec
|
|
if (counter >= 60 * 1.5) {
|
|
|
|
// flip the timescale
|
|
if (timeScaleTarget < 1) {
|
|
timeScaleTarget = 1;
|
|
} else {
|
|
timeScaleTarget = 0.05;
|
|
}
|
|
|
|
// create some random forces
|
|
explosion(_engine);
|
|
|
|
// reset counter
|
|
counter = 0;
|
|
}
|
|
})
|
|
);
|
|
|
|
var bodyOptions = {
|
|
frictionAir: 0,
|
|
friction: 0.0001,
|
|
restitution: 0.8
|
|
};
|
|
|
|
// add some small bouncy circles... remember Swordfish?
|
|
World.add(_world, Composites.stack(20, 100, 15, 3, 20, 40, function(x, y, column, row) {
|
|
return Bodies.circle(x, y, Common.random(10, 20), bodyOptions);
|
|
}));
|
|
|
|
// add some larger random bouncy objects
|
|
World.add(_world, Composites.stack(50, 50, 8, 3, 0, 0, function(x, y, column, row) {
|
|
switch (Math.round(Common.random(0, 1))) {
|
|
|
|
case 0:
|
|
if (Common.random() < 0.8) {
|
|
return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50), bodyOptions);
|
|
} else {
|
|
return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30), bodyOptions);
|
|
}
|
|
break;
|
|
case 1:
|
|
return Bodies.polygon(x, y, Math.round(Common.random(4, 8)), Common.random(20, 50), bodyOptions);
|
|
|
|
}
|
|
}));
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.stack = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(100, 100, 10, 5, 0, 0, function(x, y, column, row) {
|
|
return Bodies.rectangle(x, y, 40, 40);
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.circleStack = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(100, 100, 10, 10, 20, 0, function(x, y, column, row) {
|
|
return Bodies.circle(x, y, 20);
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.wreckingBall = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var rows = 10,
|
|
yy = 600 - 21 - 40 * rows;
|
|
|
|
var stack = Composites.stack(400, yy, 5, rows, 0, 0, function(x, y, column, row) {
|
|
return Bodies.rectangle(x, y, 40, 40, { friction: 0.9, restitution: 0.1 });
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var ball = Bodies.circle(100, 400, 50, { density: 0.07, frictionAir: 0.001});
|
|
|
|
World.add(_world, ball);
|
|
World.add(_world, Constraint.create({
|
|
pointA: { x: 300, y: 100 },
|
|
bodyB: ball
|
|
}));
|
|
|
|
if (!_isMobile) {
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showCollisions = true;
|
|
renderOptions.showVelocity = true;
|
|
}
|
|
};
|
|
|
|
Demo.ballPool = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(100, 50, 10, 15, 10, 10, function(x, y, column, row) {
|
|
return Bodies.circle(x, y, Common.random(15, 30), { restitution: 0.6, friction: 0.1 });
|
|
});
|
|
|
|
World.add(_world, [
|
|
stack,
|
|
Bodies.polygon(200, 560, 3, 60),
|
|
Bodies.polygon(400, 560, 5, 60),
|
|
Bodies.rectangle(600, 560, 80, 80)
|
|
]);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.stress = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(90, 30, 18, 15, 0, 0, function(x, y, column, row) {
|
|
return Bodies.rectangle(x, y, 35, 35);
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showAngleIndicator = false;
|
|
};
|
|
|
|
Demo.stress2 = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(100, 120, 25, 18, 0, 0, function(x, y, column, row) {
|
|
return Bodies.rectangle(x, y, 25, 25);
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showAngleIndicator = false;
|
|
};
|
|
|
|
Demo.pyramid = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.pyramid(100, 100, 15, 10, 0, 0, function(x, y, column, row) {
|
|
return Bodies.rectangle(x, y, 40, 40);
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
Demo.restitution = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var rest = 0.9,
|
|
space = 600 / 5;
|
|
|
|
World.add(_world, [
|
|
Bodies.rectangle(100 + space * 0, 150, 50, 50, { restitution: rest }),
|
|
Bodies.rectangle(100 + space * 1, 150, 50, 50, { restitution: rest, angle: -Math.PI * 0.15 }),
|
|
Bodies.rectangle(100 + space * 2, 150, 50, 50, { restitution: rest, angle: -Math.PI * 0.25 }),
|
|
Bodies.circle(100 + space * 3, 150, 25, { restitution: rest }),
|
|
Bodies.rectangle(100 + space * 5, 150, 180, 20, { restitution: rest, angle: -Math.PI * 0.5 })
|
|
]);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showCollisions = true;
|
|
renderOptions.showVelocity = true;
|
|
renderOptions.showAngleIndicator = true;
|
|
};
|
|
|
|
Demo.softBody = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var particleOptions = { render: { visible: true } };
|
|
|
|
World.add(_world, [
|
|
Composites.softBody(250, 100, 5, 5, 0, 0, true, 18, particleOptions),
|
|
Composites.softBody(250, 300, 8, 3, 0, 0, true, 15, particleOptions),
|
|
Composites.softBody(250, 400, 4, 4, 0, 0, true, 15, particleOptions)
|
|
]);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showAngleIndicator = false;
|
|
};
|
|
|
|
Demo.cloth = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var groupId = Body.nextGroupId(),
|
|
particleOptions = { friction: 0.00001, groupId: groupId, render: { visible: false }},
|
|
cloth = Composites.softBody(200, 200, 20, 12, 5, 5, false, 8, particleOptions);
|
|
|
|
for (var i = 0; i < 20; i++) {
|
|
cloth.bodies[i].isStatic = true;
|
|
}
|
|
|
|
World.add(_world, [
|
|
cloth,
|
|
Bodies.circle(300, 500, 80, { isStatic: true }),
|
|
Bodies.rectangle(500, 480, 80, 80, { isStatic: true })
|
|
]);
|
|
};
|
|
|
|
Demo.catapult = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(250, 255, 1, 6, 0, 0, function(x, y, column, row) {
|
|
return Bodies.rectangle(x, y, 30, 30);
|
|
});
|
|
|
|
var catapult = Bodies.rectangle(400, 520, 320, 20, { });
|
|
|
|
World.add(_world, [
|
|
stack,
|
|
catapult,
|
|
Bodies.rectangle(250, 555, 20, 50, { isStatic: true }),
|
|
Bodies.circle(560, 100, 50, { density: 0.005 }),
|
|
Constraint.create({ bodyA: catapult, pointB: { x: 390, y: 580 } }),
|
|
Constraint.create({ bodyA: catapult, pointB: { x: 410, y: 580 } })
|
|
]);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.showCollisions = true;
|
|
renderOptions.showVelocity = true;
|
|
renderOptions.showAngleIndicator = true;
|
|
};
|
|
|
|
Demo.beachBalls = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(0, 100, 5, 1, 20, 0, function(x, y, column, row) {
|
|
return Bodies.circle(x, y, 75, { restitution: 0.9 });
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
};
|
|
|
|
Demo.events = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(50, 100, 8, 4, 50, 50, function(x, y, column, row) {
|
|
return Bodies.circle(x, y, 15, { restitution: 1, render: { strokeStyle: '#777' } });
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.wireframes = false;
|
|
|
|
var shakeScene = function(engine) {
|
|
var bodies = Composite.allBodies(engine.world);
|
|
|
|
for (var i = 0; i < bodies.length; i++) {
|
|
var body = bodies[i];
|
|
|
|
if (!body.isStatic && body.position.y >= 500) {
|
|
var forceMagnitude = 0.01 * body.mass;
|
|
|
|
Body.applyForce(body, { x: 0, y: 0 }, {
|
|
x: (forceMagnitude + Common.random() * forceMagnitude) * Common.choose([1, -1]),
|
|
y: -forceMagnitude + Common.random() * -forceMagnitude
|
|
});
|
|
}
|
|
}
|
|
};
|
|
|
|
_sceneEvents.push(
|
|
|
|
// an example of using beforeUpdate event on an engine
|
|
Events.on(_engine, 'beforeUpdate', function(event) {
|
|
var engine = event.source;
|
|
|
|
// apply random forces every 5 secs
|
|
if (event.timestamp % 5000 < 50)
|
|
shakeScene(engine);
|
|
})
|
|
|
|
);
|
|
|
|
_sceneEvents.push(
|
|
|
|
// an example of using collisionStart event on an engine
|
|
Events.on(_engine, 'collisionStart', function(event) {
|
|
var pairs = event.pairs;
|
|
|
|
// change object colours to show those starting a collision
|
|
for (var i = 0; i < pairs.length; i++) {
|
|
var pair = pairs[i];
|
|
pair.bodyA.render.fillStyle = '#bbbbbb';
|
|
pair.bodyB.render.fillStyle = '#bbbbbb';
|
|
}
|
|
})
|
|
|
|
);
|
|
|
|
_sceneEvents.push(
|
|
|
|
// an example of using collisionActive event on an engine
|
|
Events.on(_engine, 'collisionActive', function(event) {
|
|
var pairs = event.pairs;
|
|
|
|
// change object colours to show those in an active collision (e.g. resting contact)
|
|
for (var i = 0; i < pairs.length; i++) {
|
|
var pair = pairs[i];
|
|
pair.bodyA.render.fillStyle = '#aaaaaa';
|
|
pair.bodyB.render.fillStyle = '#aaaaaa';
|
|
}
|
|
})
|
|
|
|
);
|
|
|
|
_sceneEvents.push(
|
|
|
|
// an example of using collisionEnd event on an engine
|
|
Events.on(_engine, 'collisionEnd', function(event) {
|
|
var pairs = event.pairs;
|
|
|
|
// change object colours to show those ending a collision
|
|
for (var i = 0; i < pairs.length; i++) {
|
|
var pair = pairs[i];
|
|
pair.bodyA.render.fillStyle = '#999999';
|
|
pair.bodyB.render.fillStyle = '#999999';
|
|
}
|
|
})
|
|
|
|
);
|
|
|
|
_sceneEvents.push(
|
|
|
|
// an example of using mouse events on an engine.input.mouse
|
|
Events.on(_engine, 'mousedown', function(event) {
|
|
var mousePosition = event.mouse.position;
|
|
console.log('mousedown at ' + mousePosition.x + ' ' + mousePosition.y);
|
|
_engine.render.options.background = 'cornsilk';
|
|
shakeScene(_engine);
|
|
})
|
|
|
|
);
|
|
|
|
_sceneEvents.push(
|
|
|
|
// an example of using mouse events on an engine.input.mouse
|
|
Events.on(_engine, 'mouseup', function(event) {
|
|
var mousePosition = event.mouse.position;
|
|
_engine.render.options.background = "white";
|
|
console.log('mouseup at ' + mousePosition.x + ' ' + mousePosition.y);
|
|
})
|
|
|
|
);
|
|
};
|
|
|
|
Demo.sprites = function() {
|
|
var _world = _engine.world,
|
|
offset = 10,
|
|
options = {
|
|
isStatic: true,
|
|
render: {
|
|
visible: false
|
|
}
|
|
};
|
|
|
|
Demo.reset();
|
|
_world.bodies = [];
|
|
|
|
// these static walls will not be rendered in this sprites example, see options
|
|
World.add(_world, [
|
|
Bodies.rectangle(400, -offset, 800.5 + 2 * offset, 50.5, options),
|
|
Bodies.rectangle(400, 600 + offset, 800.5 + 2 * offset, 50.5, options),
|
|
Bodies.rectangle(800 + offset, 300, 50.5, 600.5 + 2 * offset, options),
|
|
Bodies.rectangle(-offset, 300, 50.5, 600.5 + 2 * offset, options)
|
|
]);
|
|
|
|
var stack = Composites.stack(20, 20, 15, 4, 0, 0, function(x, y, column, row) {
|
|
if (Common.random() > 0.35) {
|
|
return Bodies.rectangle(x, y, 64, 64, {
|
|
render: {
|
|
strokeStyle: '#ffffff',
|
|
sprite: {
|
|
texture: './img/box.png'
|
|
}
|
|
}
|
|
});
|
|
} else {
|
|
return Bodies.circle(x, y, 46, {
|
|
density: 0.0005,
|
|
frictionAir: 0.06,
|
|
restitution: 0.3,
|
|
friction: 0.01,
|
|
render: {
|
|
sprite: {
|
|
texture: './img/ball.png'
|
|
}
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.background = './img/wall-bg.jpg';
|
|
renderOptions.showAngleIndicator = false;
|
|
renderOptions.wireframes = false;
|
|
};
|
|
|
|
Demo.raycasting = function() {
|
|
var _world = _engine.world;
|
|
|
|
Demo.reset();
|
|
|
|
var stack = Composites.stack(20, 20, 15, 4, 0, 0, function(x, y, column, row) {
|
|
switch (Math.round(Common.random(0, 1))) {
|
|
|
|
case 0:
|
|
if (Common.random() < 0.8) {
|
|
return Bodies.rectangle(x, y, Common.random(20, 50), Common.random(20, 50));
|
|
} else {
|
|
return Bodies.rectangle(x, y, Common.random(80, 120), Common.random(20, 30));
|
|
}
|
|
break;
|
|
case 1:
|
|
var sides = Math.round(Common.random(1, 8));
|
|
sides = (sides === 3) ? 4 : sides;
|
|
return Bodies.polygon(x, y, sides, Common.random(20, 50));
|
|
}
|
|
});
|
|
|
|
World.add(_world, stack);
|
|
|
|
_sceneEvents.push(
|
|
Events.on(_engine, 'afterRender', function() {
|
|
var mouse = _engine.input.mouse,
|
|
context = _engine.render.context,
|
|
bodies = Composite.allBodies(_engine.world),
|
|
startPoint = { x: 400, y: 100 },
|
|
endPoint = mouse.position;
|
|
|
|
var collisions = Query.ray(bodies, startPoint, endPoint);
|
|
|
|
context.beginPath();
|
|
context.moveTo(startPoint.x, startPoint.y);
|
|
context.lineTo(endPoint.x, endPoint.y);
|
|
if (collisions.length > 0) {
|
|
context.strokeStyle = '#fff';
|
|
} else {
|
|
context.strokeStyle = '#555';
|
|
}
|
|
context.lineWidth = 0.5;
|
|
context.stroke();
|
|
|
|
for (var i = 0; i < collisions.length; i++) {
|
|
var collision = collisions[i];
|
|
context.rect(collision.bodyA.position.x - 4.5, collision.bodyA.position.y - 4.5, 8, 8);
|
|
}
|
|
|
|
context.fillStyle = 'rgba(255,165,0,0.7)';
|
|
context.fill();
|
|
})
|
|
);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
};
|
|
|
|
// the functions for the demo interface and controls below
|
|
|
|
Demo.initControls = function() {
|
|
var demoSelect = document.getElementById('demo-select'),
|
|
demoReset = document.getElementById('demo-reset');
|
|
|
|
// create a Matter.Gui
|
|
if (!_isMobile && Gui) {
|
|
_gui = Gui.create(_engine);
|
|
|
|
// need to add mouse constraint back in after gui clear or load is pressed
|
|
Events.on(_gui, 'clear load', function() {
|
|
_mouseConstraint = MouseConstraint.create(_engine);
|
|
World.add(_engine.world, _mouseConstraint);
|
|
});
|
|
}
|
|
|
|
// create a Matter.Inspector
|
|
if (!_isMobile && Inspector && _useInspector) {
|
|
_inspector = Inspector.create(_engine);
|
|
|
|
Events.on(_inspector, 'import', function() {
|
|
_mouseConstraint = MouseConstraint.create(_engine);
|
|
World.add(_engine.world, _mouseConstraint);
|
|
});
|
|
|
|
Events.on(_inspector, 'play', function() {
|
|
_mouseConstraint = MouseConstraint.create(_engine);
|
|
World.add(_engine.world, _mouseConstraint);
|
|
});
|
|
|
|
Events.on(_inspector, 'selectStart', function() {
|
|
_mouseConstraint.constraint.render.visible = false;
|
|
});
|
|
|
|
Events.on(_inspector, 'selectEnd', function() {
|
|
_mouseConstraint.constraint.render.visible = true;
|
|
});
|
|
}
|
|
|
|
// go fullscreen when using a mobile device
|
|
if (_isMobile) {
|
|
var body = document.body;
|
|
|
|
body.className += ' is-mobile';
|
|
_engine.render.canvas.addEventListener('touchstart', Demo.fullscreen);
|
|
|
|
var fullscreenChange = function() {
|
|
var fullscreenEnabled = document.fullscreenEnabled || document.mozFullScreenEnabled || document.webkitFullscreenEnabled;
|
|
|
|
// delay fullscreen styles until fullscreen has finished changing
|
|
setTimeout(function() {
|
|
if (fullscreenEnabled) {
|
|
body.className += ' is-fullscreen';
|
|
} else {
|
|
body.className = body.className.replace('is-fullscreen', '');
|
|
}
|
|
}, 2000);
|
|
};
|
|
|
|
document.addEventListener('webkitfullscreenchange', fullscreenChange);
|
|
document.addEventListener('mozfullscreenchange', fullscreenChange);
|
|
document.addEventListener('fullscreenchange', fullscreenChange);
|
|
}
|
|
|
|
// initialise demo selector
|
|
demoSelect.value = _sceneName;
|
|
|
|
demoSelect.addEventListener('change', function(e) {
|
|
Demo[_sceneName = e.target.value]();
|
|
Gui.update(_gui);
|
|
|
|
var scrollY = window.scrollY;
|
|
window.location.hash = _sceneName;
|
|
window.scrollY = scrollY;
|
|
});
|
|
|
|
demoReset.addEventListener('click', function(e) {
|
|
Demo[_sceneName]();
|
|
Gui.update(_gui);
|
|
});
|
|
};
|
|
|
|
Demo.fullscreen = function(){
|
|
var _fullscreenElement = _engine.render.canvas;
|
|
|
|
if (!document.fullscreenElement && !document.mozFullScreenElement && !document.webkitFullscreenElement) {
|
|
if (_fullscreenElement.requestFullscreen) {
|
|
_fullscreenElement.requestFullscreen();
|
|
} else if (_fullscreenElement.mozRequestFullScreen) {
|
|
_fullscreenElement.mozRequestFullScreen();
|
|
} else if (_fullscreenElement.webkitRequestFullscreen) {
|
|
_fullscreenElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
|
|
}
|
|
}
|
|
};
|
|
|
|
Demo.reset = function() {
|
|
var _world = _engine.world;
|
|
|
|
World.clear(_world);
|
|
Engine.clear(_engine);
|
|
|
|
// clear scene graph (if defined in controller)
|
|
var renderController = _engine.render.controller;
|
|
if (renderController.clear)
|
|
renderController.clear(_engine.render);
|
|
|
|
// clear all scene events
|
|
for (var i = 0; i < _sceneEvents.length; i++)
|
|
Events.off(_engine, _sceneEvents[i]);
|
|
_sceneEvents = [];
|
|
|
|
// reset id pool
|
|
Common._nextId = 0;
|
|
|
|
// reset random seed
|
|
Common._seed = 0;
|
|
|
|
// reset mouse offset and scale (only required for Demo.views)
|
|
Mouse.setScale(_engine.input.mouse, { x: 1, y: 1 });
|
|
Mouse.setOffset(_engine.input.mouse, { x: 0, y: 0 });
|
|
|
|
_engine.enableSleeping = false;
|
|
_engine.world.gravity.y = 1;
|
|
_engine.world.gravity.x = 0;
|
|
_engine.timing.timeScale = 1;
|
|
|
|
var offset = 5;
|
|
World.add(_world, [
|
|
Bodies.rectangle(400, -offset, 800.5 + 2 * offset, 50.5, { isStatic: true }),
|
|
Bodies.rectangle(400, 600 + offset, 800.5 + 2 * offset, 50.5, { isStatic: true }),
|
|
Bodies.rectangle(800 + offset, 300, 50.5, 600.5 + 2 * offset, { isStatic: true }),
|
|
Bodies.rectangle(-offset, 300, 50.5, 600.5 + 2 * offset, { isStatic: true })
|
|
]);
|
|
|
|
_mouseConstraint = MouseConstraint.create(_engine);
|
|
World.add(_world, _mouseConstraint);
|
|
|
|
var renderOptions = _engine.render.options;
|
|
renderOptions.wireframes = true;
|
|
renderOptions.hasBounds = false;
|
|
renderOptions.showDebug = false;
|
|
renderOptions.showBroadphase = false;
|
|
renderOptions.showBounds = false;
|
|
renderOptions.showVelocity = false;
|
|
renderOptions.showCollisions = false;
|
|
renderOptions.showAxes = false;
|
|
renderOptions.showPositions = false;
|
|
renderOptions.showAngleIndicator = true;
|
|
renderOptions.showIds = false;
|
|
renderOptions.showShadows = false;
|
|
renderOptions.background = '#fff';
|
|
|
|
if (_isMobile)
|
|
renderOptions.showDebug = true;
|
|
};
|
|
|
|
})(); |