AWPRaycastVehicle.as

package awayphysics.dynamics.vehicle
{
	import awayphysics.AWPBase;
	import awayphysics.dynamics.AWPRigidBody;
	import awayphysics.plugin.IMesh3D;

	import flash.geom.Vector3D;

	// create the raycast vehicle
	// refer to https://docs.google.com/document/edit?id=18edpOwtGgCwNyvakS78jxMajCuezotCU_0iezcwiFQc
	public class AWPRaycastVehicle extends AWPBase
	{
		private var m_chassisBody : AWPRigidBody;
		private var m_wheelInfo : Vector.<AWPWheelInfo>;

		public function AWPRaycastVehicle(tuning : AWPVehicleTuning, chassis : AWPRigidBody)
		{
			pointer = bullet.createVehicleMethod(tuning, chassis.pointer);

			m_chassisBody = chassis;
			m_wheelInfo = new Vector.<AWPWheelInfo>();
		}

		public function getRigidBody() : AWPRigidBody
		{
			return m_chassisBody;
		}

		public function getNumWheels() : int
		{
			return m_wheelInfo.length;
		}

		public function getWheelInfo(index : int) : AWPWheelInfo
		{
			if (index < m_wheelInfo.length) {
				return m_wheelInfo[index];
			}
			return null;
		}

		public function addWheel(_skin : IMesh3D, connectionPointCS0 : Vector3D, wheelDirectionCS0 : Vector3D, wheelAxleCS : Vector3D, suspensionRestLength : Number, wheelRadius : Number, tuning : AWPVehicleTuning, isFrontWheel : Boolean) : void
		{
			var wp : uint = bullet.addVehicleWheelMethod(pointer, connectionPointCS0.x / _scaling, connectionPointCS0.y / _scaling, connectionPointCS0.z / _scaling, wheelDirectionCS0.x, wheelDirectionCS0.y, wheelDirectionCS0.z, wheelAxleCS.x, wheelAxleCS.y, wheelAxleCS.z, suspensionRestLength / _scaling, wheelRadius / _scaling, tuning, (isFrontWheel) ? 1 : 0);

			if (m_wheelInfo.length > 0) {
				var num : int = 0;
				for (var i : int = m_wheelInfo.length - 1; i >= 0; i-- ) {
					num += 1;
					m_wheelInfo[i] = new AWPWheelInfo(wp - 284 * num, m_wheelInfo[i].skin);
				}
			}

			m_wheelInfo.push(new AWPWheelInfo(wp, _skin));
		}

		public function applyEngineForce(force : Number, wheelIndex : int) : void
		{
			m_wheelInfo[wheelIndex].engineForce = force;
		}

		public function setBrake(brake : Number, wheelIndex : int) : void
		{
			m_wheelInfo[wheelIndex].brake = brake;
		}

		public function setSteeringValue(steering : Number, wheelIndex : int) : void
		{
			m_wheelInfo[wheelIndex].steering = steering;
		}

		public function getSteeringValue(wheelIndex : int) : Number
		{
			return m_wheelInfo[wheelIndex].steering;
		}

		public function updateWheelsTransform() : void
		{
			for each (var wheel:AWPWheelInfo in m_wheelInfo) {
				wheel.updateTransform();
			}
		}
	}
}