diff --git a/joint/common.js b/joint/common.js
index 2bb06a6..155f485 100644
--- a/joint/common.js
+++ b/joint/common.js
@@ -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());
}
\ No newline at end of file
diff --git a/joint/index.html b/joint/index.html
index a5d78d4..0c2cbd0 100644
--- a/joint/index.html
+++ b/joint/index.html
@@ -9,6 +9,7 @@
-
+
+