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raw finish of joint test

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logsol 2012-07-18 16:35:51 +02:00
parent ca9c780bd7
commit 2df41336f4
2 changed files with 29 additions and 14 deletions
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40
joint/common.js
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@ -1,5 +1,7 @@
var bodiesNum = 3;
var world;
var body;
var item;
var b2Vec2 = Box2D.Common.Math.b2Vec2,
@ -14,7 +16,8 @@ var b2Vec2 = Box2D.Common.Math.b2Vec2,
b2CircleShape = Box2D.Collision.Shapes.b2CircleShape,
b2DebugDraw = Box2D.Dynamics.b2DebugDraw,
b2MouseJointDef = Box2D.Dynamics.Joints.b2MouseJointDef,
b2ContactListener = Box2D.Dynamics.b2ContactListener;
b2ContactListener = Box2D.Dynamics.b2ContactListener,
b2RevoluteJointDef = Box2D.Dynamics.Joints.b2RevoluteJointDef;
function setupWorld(gravity) {
world = new b2World(new b2Vec2(0, gravity), true);
@ -48,35 +51,46 @@ function setupWorld(gravity) {
// create some objects
var b1 = makeBox(2,3);
var b2 = makeBox(3,3);
dude = makeBody(.2, .6, 2, 12, true).GetBody();
item = makeBody(.3, .1, 1.7, 11, false).GetBody();
var jointDef = new b2RevoluteJointDef();
jointDef.Initialize(dude, item, dude.GetWorldCenter());
jointDef.lowerAngle = -0.5 * Math.PI; // -90 degrees
jointDef.upperAngle = 0.25 * Math.PI; // 45 degrees
jointDef.enableLimit = true;
world.CreateJoint(jointDef);
/*
jointDef.maxMotorTorque = 10.0;
jointDef.motorSpeed = 0.0;
jointDef.enableMotor = true;
*/
}
function makeBox(x, y){
function makeBody(width, height, x, y, fixedRotation){
var fixDef = new b2FixtureDef;
fixDef.density = 1.0;
fixDef.friction = 0.99;
fixDef.restitution = .51;
fixDef.shape = new b2PolygonShape;
fixDef.shape.SetAsBox(0.5, 0.5);
fixDef.shape.SetAsBox(width, height);
var bodyDef = new b2BodyDef;
bodyDef.type = b2Body.b2_dynamicBody;
bodyDef.position.x = x;
bodyDef.position.y = y;
bodyDef.fixedRotation = fixedRotation;
world.CreateBody(bodyDef).CreateFixture(fixDef);
return bodyDef;
return world.CreateBody(bodyDef).CreateFixture(fixDef);
}
function jump() {
var body = findBody(1);
function jump(body) {
body.SetAwake(true);
body.ApplyImpulse(new b2Vec2(8, -15), body.GetPosition());
body.SetAngularVelocity(1.5);
body.ApplyImpulse(new b2Vec2(1, -1), body.GetPosition());
}

3
joint/index.html
View file

@ -9,6 +9,7 @@
<body>
<canvas id="canvas" width="600" height="400" style="background-color:#333333;"></canvas>
<button onclick="jump()">jump</button>
<button onclick="jump(dude)">move dude</button>
<button onclick="jump(item)">move item</button>
</body>
</html>