Raycasting from center of camera forwards into world

elvisish

I'm trying to raycast from center of screen as far as possible, tried this but it barely goes any distance and seems to be firing at the top of the screen instead of the center:

    var from = cam.project_ray_origin(Vector2(0.5,0.5))
    var to = from + cam.project_ray_normal(Vector2(0.5,0.5)) * 10000
    var space_state = get_world().direct_space_state
    var result = space_state.intersect_ray(from, to, [ self , player], 2147483647, true, true )

and

var to = from + cam.project_ray_normal(Vector2(0.5,0.5)) * -INF

doesn't work for some reason.

cybereality

Here is my code:

func get_world_pos(mouse_pos):
	var ray_length = 1000
	var from = camera.project_ray_origin(mouse_pos)
	var to = from + camera.project_ray_normal(mouse_pos) * ray_length
	var space_state = get_world().get_direct_space_state()
	var result = space_state.intersect_ray(from, to)
	var world_pos = Vector3()
	if result.has("position") and result.has("collider"):
		if result.get("collider").name == "Cube":
			world_pos = result.get("collider").translation
	return world_pos

In your case, you can replace mouse_pos with Vector3.ZERO

elvisish

@cybereality said: Here is my code:

func get_world_pos(mouse_pos):
	var ray_length = 1000
	var from = camera.project_ray_origin(mouse_pos)
	var to = from + camera.project_ray_normal(mouse_pos) * ray_length
	var space_state = get_world().get_direct_space_state()
	var result = space_state.intersect_ray(from, to)
	var world_pos = Vector3()
	if result.has("position") and result.has("collider"):
		if result.get("collider").name == "Cube":
			world_pos = result.get("collider").translation
	return world_pos

In your case, you can replace mouse_pos with Vector3.ZERO

Sorry, I'm so dumb, I keep using Vector2(0.5,0.5) to get the screen center, an old habit left over from Unity unfortunately. Is the best way to get the screen center in Godot using get_viewport().size / 2 or get_viewport().size * 0.5 or is there a faster method? Thanks!

cybereality

You're right, it would be:

get_viewport().size * 0.5