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49 lines
No EOL
1.4 KiB
JavaScript
49 lines
No EOL
1.4 KiB
JavaScript
(function() {
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var World = Matter.World,
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Bodies = Matter.Bodies,
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Body = Matter.Body,
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Composites = Matter.Composites,
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Events = Matter.Events;
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Example.staticFriction = function(demo) {
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var engine = demo.engine,
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world = engine.world,
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sceneEvents = demo.sceneEvents;
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var body = Bodies.rectangle(400, 500, 200, 60, { isStatic: true, chamfer: 10 }),
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size = 50,
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counter = -1;
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var stack = Composites.stack(350, 470 - 6 * size, 1, 6, 0, 0, function(x, y) {
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return Bodies.rectangle(x, y, size * 2, size, {
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slop: 0.5,
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friction: 1,
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frictionStatic: Infinity
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});
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});
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World.add(world, [body, stack]);
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sceneEvents.push(
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Events.on(engine, 'beforeUpdate', function(event) {
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counter += 0.014;
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if (counter < 0) {
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return;
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}
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var px = 400 + 100 * Math.sin(counter);
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// body is static so must manually update velocity for friction to work
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Body.setVelocity(body, { x: px - body.position.x, y: 0 });
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Body.setPosition(body, { x: px, y: body.position.y });
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})
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);
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var renderOptions = demo.render.options;
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renderOptions.showAngleIndicator = false;
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renderOptions.showVelocity = true;
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};
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})(); |