3D Raycast Exclusion

KiwiCaveGremlin

Hey there!

I'm working on a very simple isometric c# strategy game and I have a raycast projecting from the camera to the mouse point. This part is all working well and good, but it's falling apart in the "collision mask" department.

What I am trying to accomplish is the ability to "ignore" objects other than the floor, the thing I always want my click to "target" as the destination for my player character.

For the life of me, I cannot quite figure out how this all works. I've been reading the documentation on raycasting all day and seemingly making little to no headway. This is what I have so far, which works perfectly fine without obstacles... so not particularly useful atm!

public Vector3 MousePointRaycast()
{
	Vector3 pointPosition;
	Vector3 from = mainCam.ProjectRayOrigin(GetViewport().GetMousePosition());
	Vector3 to = from + mainCam.ProjectRayNormal(GetViewport().GetMousePosition()) * rayLength;
	//Create Querry
	PhysicsRayQueryParameters3D rayQuery = new PhysicsRayQueryParameters3D()
	{
		From = from,
		To = to,
		CollisionMask = 4294967295,
		Exclude = [GetRid()]
	};
	//Determine if the querry is a hit or not
	PhysicsDirectSpaceState3D space = GetWorld3D().DirectSpaceState;
	Variant newVal;
	space.IntersectRay(rayQuery).TryGetValue("position", out newVal);
	GD.Print ("Physics Querry is " + newVal.ToString());
	//Use collision as target position
	pointPosition = (Vector3)newVal;
	GD.Print ("Target is " + pointPosition);
	return pointPosition;
}

KiwiCaveGremlin

I was embarrassingly close to my intended solution. I had the collision mask, as above, set to include everything. In case anyone finds this helpful I'll leave it here and close the post!

public Vector3 MousePointRaycast()
{
	Vector3 pointPosition;
	Vector3 from = mainCam.ProjectRayOrigin(GetViewport().GetMousePosition());
	Vector3 to = from + mainCam.ProjectRayNormal(GetViewport().GetMousePosition()) * rayLength;
	//Create Querry
	PhysicsRayQueryParameters3D rayQuery = new PhysicsRayQueryParameters3D()
	{
		From = from,
		To = to,
		CollisionMask = 1, //The only required change
		Exclude = [GetRid()]
	};
	//Determine if the querry is a hit or not
	PhysicsDirectSpaceState3D space = GetWorld3D().DirectSpaceState;
	Variant newVal;
	space.IntersectRay(rayQuery).TryGetValue("position", out newVal);
	GD.Print ("Physics Querry is " + newVal.ToString());
	//Use collision as target position
	pointPosition = (Vector3)newVal;
	GD.Print ("Target is " + pointPosition);
	return pointPosition;
}