Intersect ray for enemy sight is absolutely cooked (non-functional)

[UniverseUnlimited]

Godot Version

v4.2.2

Question

-The goobers in question: Player, Enemy (moves towards player)
-What isn’t happening: I’m trying to make a raycast to check if an object is between the enemy and player, from the enemy’s script, for the enemy to detect the player.

So I’ve tried a ton of different ways of casting an intersect ray but it never works. When I stopped getting errors the cast would output at “random” (but consistent) position somewhere near world origin (but not at world origin). I finally got it to actually output objects, but it would output a seemingly random output at a particular position (When both were in a pretty small area a bit positive on x and z, it would output a “random” one of the walls I had there, but nothing was between player and enemy.). Something being between player and enemy had no effect on the output. I just need an intersect ray that works with two moving objects, to check if anything is between them

[gertkeno]

Can you paste your script for altering the ray’s target position?

[UniverseUnlimited]

Well I had it just set the var in the physics loop so it just remade the raycast each physics frame, but I redid the code so much I dunno, I also thought I could use a shapecast (Which I can’t because of how that works) so I deleted the code. So yeah I just need any way to get the raycast to work, because I can’t find an answer on how to. (Note the raycast is code based, not node based)

[gertkeno]

It’s hard to know what went wrong. A common issue with raycasts is assuming it’s target_position property is in global space. It actually checks collisions pointing in target_position’s direction and length. So properly setting this every frame would look like this:

extends RayCast3D
@export var target: Node3D

func _physics_process(delta: float) -> void:
    var diff = target.global_position - self.global_position
    target_position = diff

[UniverseUnlimited]

I reconstructed my code btw

So are you saying “to” should be “player.position - position” instead?

[gertkeno]

Using direct_space_state.intersect_ray you probably just want to use global_position instead of position

[UniverseUnlimited]

When I did that it started consistently returning values pertaining to the player, but I can’t get it to check if it isn’t the player (it’s actually outputting the objects it collides with now, but as a weird string with a lot in it now)

That above is the output from “print(result.get(n))” and below is the statement with error

How do I get the object in dictionary rather than the raycast converting the object to this weird string?

[gertkeno]

for _ in Dictionary gives you the keys in a dictionary, this result one is full of strings.

Try indexing something useful directly:

if result:
    var position: Vector3 = result["position"]
    var collider: Object = result["collider"]

Here’s the docs, listing the rest of keys to make use of.

PhysicsDirectSpaceState3D

[UniverseUnlimited]

Ok, I got it retuning an object, and when I start the project it returns the player!
Great! Solved, right?
I step back like 2 (meters?) and it starts detecting the ground. The ground is not between me and the enemy, and also, I checked by renaming the ground and I saw the name in the “print()”
I think it’s casting down?

[gertkeno]

Where is the center of your player? Where is the center of your enemy? If their origin is at their feet then the ray will also be at their feet.

[UniverseUnlimited]

Oh shoot yeah thanks that would do it