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lib/haxebullet/README.md

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+# haxebullet
+
+[Bullet 3D Physics](http://bulletphysics.org/) bindings for Haxe.
+
+Based on the webidl approach, works for HL/C & JS:
+- https://github.com/ncannasse/webidl
+- https://github.com/HeapsIO/bullet
+- https://github.com/bulletphysics/bullet3
+- https://github.com/kripken/ammo.js
+
+## Usage
+
+[Reference](http://bulletphysics.org/mediawiki-1.5.8/index.php/Hello_World)
+
+In order to get HL/C build to work you need to add `haxebullet/bullet` and `haxebullet/hl` directories into your build process so the compiler is able to find bullet sources.
+
+In order to get JS build to work you need to add `haxebullet/ammo/ammo.js` script either by embedding or including it with a script tag.
+
+``` hx
+var collisionConfiguration = new bullet.Bt.DefaultCollisionConfiguration();
+var dispatcher = new bullet.Bt.CollisionDispatcher(collisionConfiguration);
+var broadphase = new bullet.Bt.DbvtBroadphase();
+var solver = new bullet.Bt.SequentialImpulseConstraintSolver();
+var dynamicsWorld = new bullet.Bt.DiscreteDynamicsWorld(dispatcher, broadphase, solver, collisionConfiguration);
+
+var groundShape = new bullet.Bt.StaticPlaneShape(new bullet.Bt.Vector3(0, 1, 0), 1);
+var groundTransform = new bullet.Bt.Transform();
+groundTransform.setIdentity();
+groundTransform.setOrigin(new bullet.Bt.Vector3(0, -1, 0));
+var centerOfMassOffsetTransform = new bullet.Bt.Transform();
+centerOfMassOffsetTransform.setIdentity();
+var groundMotionState = new bullet.Bt.DefaultMotionState(groundTransform, centerOfMassOffsetTransform);
+
+var groundRigidBodyCI = new bullet.Bt.RigidBodyConstructionInfo(0.01, groundMotionState, cast groundShape, new bullet.Bt.Vector3(0, 0, 0));
+var groundRigidBody = new bullet.Bt.RigidBody(groundRigidBodyCI);
+dynamicsWorld.addRigidBody(groundRigidBody);
+
+var fallShape = new bullet.Bt.SphereShape(1);
+var fallTransform = new bullet.Bt.Transform();
+fallTransform.setIdentity();
+fallTransform.setOrigin(new bullet.Bt.Vector3(0, 50, 0));
+var centerOfMassOffsetFallTransform = new bullet.Bt.Transform();
+centerOfMassOffsetFallTransform.setIdentity();
+var fallMotionState = new bullet.Bt.DefaultMotionState(fallTransform, centerOfMassOffsetFallTransform);
+
+var fallInertia = new bullet.Bt.Vector3(0, 0, 0);
+// fallShape.calculateLocalInertia(1, fallInertia);
+var fallRigidBodyCI = new bullet.Bt.RigidBodyConstructionInfo(1, fallMotionState, fallShape, fallInertia);
+var fallRigidBody = new bullet.Bt.RigidBody(fallRigidBodyCI);
+dynamicsWorld.addRigidBody(fallRigidBody);
+
+for (i in 0...3000) {
+	dynamicsWorld.stepSimulation(1 / 60);
+	
+	var trans = new bullet.Bt.Transform();
+	var m = fallRigidBody.getMotionState();
+	m.getWorldTransform(trans);
+	trace(trans.getOrigin().y());
+	trans.delete();
+}
+
+// ...delete();
+```