private void AddCar()
{
SCNNode pointOfView = sceneView.PointOfView;
if (pointOfView == null)
{
return;
}
SCNMatrix4 transform = pointOfView.Transform;
SCNVector3 orientation = new SCNVector3(-transform.M31, -transform.M32, -transform.M33);
SCNVector3 location = new SCNVector3(transform.M41, transform.M42, transform.M43);
SCNVector3 currentPositionOfCamera = orientation + location;
//TODO 4.2 Creando el coche
SCNScene carScene = SCNScene.FromFile("art.scnassets/CarScene.scn");
SCNNode carNode = carScene.RootNode.FindChildNode("frame", false);
SCNNode frontLeftWheel = carNode.FindChildNode("frontLeftParent", false);
SCNPhysicsVehicleWheel v_frontLeftWheel = SCNPhysicsVehicleWheel.Create(frontLeftWheel);
SCNNode frontRightWheel = carNode.FindChildNode("frontRightParent", false);
SCNPhysicsVehicleWheel v_frontRightWheel = SCNPhysicsVehicleWheel.Create(frontRightWheel);
SCNNode rearLeftWheel = carNode.FindChildNode("rearLeftParent", false);
SCNPhysicsVehicleWheel v_rearLeftWheel = SCNPhysicsVehicleWheel.Create(rearLeftWheel);
SCNNode rearRightWheel = carNode.FindChildNode("rearRightParent", false);
SCNPhysicsVehicleWheel v_rearRightWheel = SCNPhysicsVehicleWheel.Create(rearRightWheel);
carNode.Position = currentPositionOfCamera;
SCNPhysicsBody body = SCNPhysicsBody.CreateBody(SCNPhysicsBodyType.Dynamic, SCNPhysicsShape.Create(carNode, keepAsCompound: true));
carNode.PhysicsBody = body;
PhysicsVehicle = SCNPhysicsVehicle.Create(carNode.PhysicsBody, new SCNPhysicsVehicleWheel[] { v_frontLeftWheel, v_frontRightWheel, v_rearLeftWheel, v_rearRightWheel });
sceneView.Scene.PhysicsWorld.AddBehavior(PhysicsVehicle);
sceneView.Scene.RootNode.AddChildNode(carNode);
}
private SCNNode SetupVehicle(SCNScene scene)
{
var carScene = SCNScene.FromFile("rc_car", ResourceManager.ResourceFolder, (NSDictionary)null);
var chassisNode = carScene.RootNode.FindChildNode("rccarBody", false);
chassisNode.Position = new SCNVector3(0f, 10f, 30f);
chassisNode.Rotation = new SCNVector4(0f, 1f, 0f, (float)Math.PI);
var body = SCNPhysicsBody.CreateDynamicBody();
body.AllowsResting = false;
body.Mass = 80f;
body.Restitution = 0.1f;
body.Friction = 0.5f;
body.RollingFriction = 0f;
chassisNode.PhysicsBody = body;
var frontCameraNode = SCNNode.Create();
frontCameraNode.Position = new SCNVector3(0f, 3.5f, 2.5f);
frontCameraNode.Rotation = new SCNVector4(0f, 1f, 0f, (float)Math.PI);
frontCameraNode.Camera = SCNCamera.Create();
frontCameraNode.Camera.XFov = 75f;
frontCameraNode.Camera.ZFar = 500f;
chassisNode.AddChildNode(frontCameraNode);
scene.RootNode.AddChildNode(chassisNode);
var pipeNode = chassisNode.FindChildNode("pipe", true);
reactor = SCNParticleSystem.Create("reactor", ResourceManager.ResourceFolder);
reactor.ParticleImage = ResourceManager.GetResourcePath("spark.png");
reactorDefaultBirthRate = reactor.BirthRate;
reactor.BirthRate = 0;
pipeNode.AddParticleSystem(reactor);
SCNNode wheel0Node = chassisNode.FindChildNode("wheelLocator_FL", true);
SCNNode wheel1Node = chassisNode.FindChildNode("wheelLocator_FR", true);
SCNNode wheel2Node = chassisNode.FindChildNode("wheelLocator_RL", true);
SCNNode wheel3Node = chassisNode.FindChildNode("wheelLocator_RR", true);
var wheel0 = SCNPhysicsVehicleWheel.Create(wheel0Node);
var wheel1 = SCNPhysicsVehicleWheel.Create(wheel1Node);
var wheel2 = SCNPhysicsVehicleWheel.Create(wheel2Node);
var wheel3 = SCNPhysicsVehicleWheel.Create(wheel3Node);
var min = SCNVector3.Zero;
var max = SCNVector3.Zero;
wheel0Node.GetBoundingBox(ref min, ref max);
float wheelHalfWidth = 0.5f * (max.X - min.X);
wheel0.ConnectionPosition = SCNVector3.Add(wheel0Node.ConvertPositionToNode(SCNVector3.Zero, chassisNode), new SCNVector3(wheelHalfWidth, 0f, 0f));
wheel1.ConnectionPosition = SCNVector3.Subtract(wheel1Node.ConvertPositionToNode(SCNVector3.Zero, chassisNode), new SCNVector3(wheelHalfWidth, 0f, 0f));
wheel2.ConnectionPosition = SCNVector3.Add(wheel2Node.ConvertPositionToNode(SCNVector3.Zero, chassisNode), new SCNVector3(wheelHalfWidth, 0f, 0f));
wheel3.ConnectionPosition = SCNVector3.Subtract(wheel3Node.ConvertPositionToNode(SCNVector3.Zero, chassisNode), new SCNVector3(wheelHalfWidth, 0f, 0f));
var vehicle = SCNPhysicsVehicle.Create(chassisNode.PhysicsBody,
new SCNPhysicsVehicleWheel[] { wheel0, wheel1, wheel2, wheel3 });
scene.PhysicsWorld.AddBehavior(vehicle);
this.vehicle = vehicle;
return(chassisNode);
}