public void Raycast(RayOctreeQuery query, bool single = false)
{
query.Results.Clear();
if (query.Ray == null)
{
return;
}
int count;
IntPtr resultVector;
var ptr = csi_Atomic_Octree_Raycast(nativeInstance, ref query.Ray, ref query.Level, query.MaxDistance, query.DrawableFlags, query.ViewMask, single, out resultVector, out count);
if (ptr == IntPtr.Zero)
{
return;
}
int structSize = Marshal.SizeOf(typeof(RayQueryResult));
for (int i = 0; i < count; i++)
{
IntPtr data = new IntPtr(ptr.ToInt64() + structSize * i);
RayQueryResult item = (RayQueryResult)Marshal.PtrToStructure(data, typeof(RayQueryResult));
query.Results.Add(item);
}
csi_Atomic_Octree_Raycast_FreeResult(resultVector);
}
public void Raycast(RayOctreeQuery query, bool single = false)
{
query.Results.Clear();
if (query.Ray == null)
return;
int count;
IntPtr resultVector;
var ptr = csi_Atomic_Octree_Raycast(nativeInstance, ref query.Ray, ref query.Level, query.MaxDistance, query.DrawableFlags, query.ViewMask, single, out resultVector, out count);
if (ptr == IntPtr.Zero)
{
return;
}
int structSize = Marshal.SizeOf(typeof(RayQueryResult));
for (int i = 0; i < count; i++)
{
IntPtr data = new IntPtr(ptr.ToInt64() + structSize * i);
RayQueryResult item = (RayQueryResult)Marshal.PtrToStructure(data, typeof(RayQueryResult));
query.Results.Add(item);
}
csi_Atomic_Octree_Raycast_FreeResult(resultVector);
}
bool Raycast(float maxDistance, out Vector3 hitPos, out Drawable hitDrawable)
{
var input = GetSubsystem<Input>();
hitDrawable = null;
hitPos = new Vector3();
var graphics = GetSubsystem<Graphics>();
Camera camera = CameraNode.GetComponent<Camera>();
IntVector2 pos = input.MousePosition;
Ray cameraRay = camera.GetScreenRay((float)pos.X / graphics.Width, (float)pos.Y / graphics.Height);
RayOctreeQuery query = new RayOctreeQuery(cameraRay, RayQueryLevel.RAY_TRIANGLE, maxDistance, Constants.DRAWABLE_GEOMETRY);
// Pick only geometry objects, not eg. zones or lights, only get the first (closest) hit
scene.GetComponent<Octree>().RaycastSingle(query);
if (query.Results.Count > 0)
{
var first = query.Results.First();
hitPos = first.Position;
hitDrawable = first.Drawable;
return true;
}
return false;
}
/// Return the closest drawable object by a ray query.
public void RaycastSingle(RayOctreeQuery query)
{
Raycast(query, true);
}
/// Return the closest drawable object by a ray query.
public void RaycastSingle(RayOctreeQuery query)
{
Raycast(query, true);
}
void SubscribeToEvents()
{
SubscribeToEvent<PostUpdateEvent>(e =>
{
if (vehicle == null)
return;
Node vehicleNode = vehicle.Node;
// Physics update has completed. Position camera behind vehicle
Quaternion dir = Quaternion.FromAxisAngle(Vector3.UnitY, vehicleNode.Rotation.YawAngle);
dir = dir * Quaternion.FromAxisAngle(Vector3.UnitY, vehicle.Controls.Yaw);
dir = dir * Quaternion.FromAxisAngle(Vector3.UnitX, vehicle.Controls.Pitch);
Vector3 cameraTargetPos = vehicleNode.Position - (dir * new Vector3(0.0f, 0.0f, CameraDistance));
Vector3 cameraStartPos = vehicleNode.Position;
// and move it closer to the vehicle if something in between
Ray cameraRay = new Ray(cameraStartPos, cameraTargetPos - cameraStartPos);
float cameraRayLength = (cameraTargetPos - cameraStartPos).Length;
// Raycast camera against static objects (physics collision mask 2)
var query = new RayOctreeQuery(cameraRay, RayQueryLevel.RAY_TRIANGLE, cameraRayLength, Constants.DRAWABLE_ANY, 2);
PhysicsRaycastResult result = new PhysicsRaycastResult();
scene.GetComponent<PhysicsWorld>().RaycastSingle(ref result, cameraRay, cameraRayLength, 2);
if (result.Body != null)
{
cameraTargetPos = cameraStartPos + cameraRay.Direction * (result.Distance - 0.5f);
}
CameraNode.Position = cameraTargetPos;
CameraNode.Rotation = dir;
});
}
