0
0
Fork 0
mirror of https://github.com/liabru/matter-js.git synced 2024-12-02 10:49:45 -05:00
liabru-matter-js/examples/catapult.js

97 lines
2.5 KiB
JavaScript
Raw Normal View History

2016-11-20 19:41:57 -05:00
var Example = Example || {};
2015-08-25 14:12:52 -04:00
2016-11-20 19:41:57 -05:00
Example.catapult = function() {
var Engine = Matter.Engine,
Render = Matter.Render,
Runner = Matter.Runner,
2015-08-25 14:12:52 -04:00
Composites = Matter.Composites,
2016-11-20 19:41:57 -05:00
Constraint = Matter.Constraint,
MouseConstraint = Matter.MouseConstraint,
Mouse = Matter.Mouse,
World = Matter.World,
Bodies = Matter.Bodies,
Body = Matter.Body,
Vector = Matter.Vector;
2016-11-20 19:41:57 -05:00
// create engine
var engine = Engine.create(),
world = engine.world;
// create renderer
var render = Render.create({
element: document.body,
engine: engine,
options: {
width: 800,
height: 600,
2016-11-20 19:41:57 -05:00
showAngleIndicator: true,
showCollisions: true,
showVelocity: true
}
});
Render.run(render);
// create runner
var runner = Runner.create();
Runner.run(runner, engine);
// add bodies
var group = Body.nextGroup(true);
2016-11-20 19:41:57 -05:00
var stack = Composites.stack(250, 255, 1, 6, 0, 0, function(x, y) {
return Bodies.rectangle(x, y, 30, 30);
});
var catapult = Bodies.rectangle(400, 520, 320, 20, { collisionFilter: { group: group } });
2016-11-20 19:41:57 -05:00
World.add(world, [
stack,
catapult,
Bodies.rectangle(400, 600, 800, 50.5, { isStatic: true }),
Bodies.rectangle(250, 555, 20, 50, { isStatic: true }),
Bodies.rectangle(400, 535, 20, 80, { isStatic: true, collisionFilter: { group: group } }),
2016-11-20 19:41:57 -05:00
Bodies.circle(560, 100, 50, { density: 0.005 }),
Constraint.create({
bodyA: catapult,
pointB: Vector.clone(catapult.position),
stiffness: 1,
length: 0
})
2016-11-20 19:41:57 -05:00
]);
// add mouse control
var mouse = Mouse.create(render.canvas),
mouseConstraint = MouseConstraint.create(engine, {
mouse: mouse,
constraint: {
stiffness: 0.2,
render: {
visible: false
}
}
2015-08-25 14:12:52 -04:00
});
2016-11-20 19:41:57 -05:00
World.add(world, mouseConstraint);
2015-08-25 14:12:52 -04:00
2016-11-20 19:41:57 -05:00
// keep the mouse in sync with rendering
render.mouse = mouse;
// fit the render viewport to the scene
2016-11-27 20:13:22 -05:00
Render.lookAt(render, {
min: { x: 0, y: 0 },
max: { x: 800, y: 600 }
});
2016-11-20 19:41:57 -05:00
// context for MatterTools.Demo
return {
engine: engine,
runner: runner,
render: render,
canvas: render.canvas,
stop: function() {
Matter.Render.stop(render);
Matter.Runner.stop(runner);
}
};
};