Trouble updating variable from shooting script in Godot

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1

Godot Version 4.2.2

Question

Hi,

I’ve got an issue with updating a variable (Last_Interacted) from my shooting script in Godot. Here’s an overview of the problem:

  • I have a shooting script attached to a RayCast3D node in my scene.
  • The shooting script is responsible for detecting collisions with objects in the scene and updating a variable (What_Hit) with the object that was hit.
  • I’m trying to update another variable (Last_Interacted) in my Game Manager node script with the value of What_Hit when the shooting action is triggered.
  • However, despite the shooting script appearing to detect collisions correctly and update What_Hit, Last_Interacted does not seem to be updated from the shooting script.

Here’s my shooting script:

extends RayCast3D

var What_Hit

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	if is_colliding():
		What_Hit = get_collider()


func _input(event):
	if event.is_action_pressed("Shoot"):
		var game_manager = get_node("/root/Node3D/Game Manager")
		if game_manager != null:
			game_manager.Last_Interacted = What_Hit
			print(game_manager.Last_Interacted)
		else:
			print("GameManager node not found!")

Game Manager script:

extends Node

var Last_Interacted

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	print(Last_Interacted)

And my relevant scene tree:

root
Dialogic
Node3D
-Game Manager
-Player (sub-scene)
- -Collision
- -Head
- - -Camera
- - -RayCast3D (shooting script)

Have I misunderstood how scripts interact with eachother in Godot? Thanks in advance

(I first tried using signals for this, but found no way to connect it to the main scene)

2

Can you update the project for me take a look?

1 Like
3

This might work instead:
What_Hit = get_collider_id()
get_collider() is only going to return information useful to whatevers involved in that current collision, where get_collider_id() will return the instances global ID. I’d bet the code is technically working fine, your game manager just doesn’t know what to do with it.

note- I’m pretty new at this, so I’d verify my explanation for accuracy.

1 Like
4

Apologies for not closing this earlier- I’ve gone with another solution that works much better. Thanks for being willing to take a look anyhow!

5

Apologies for not closing this earlier- I’ve gone with another solution that works much better that ill type up for anyone searching for a solution in the future.

I’ll be sure to remember get_collider_id() though! Thanks for helping out a fellow newbie!

6

For anyone searching for a solution in the future my raycast3d script now looks like this:

func _ready():
	add_exception(owner)

func _physics_process(delta):
	prompt.text = "" #irrelivant to solution
	if(is_colliding()):
		var detected = get_collider() 
		if detected is Interactable:
			prompt.text = detected.get_prompt() #irrelivant to solution
			if Input.is_action_just_pressed(detected.prompt_action):
				detected.interact(owner)

For the objects that I want to be interactable, I have just given them a class called “Interactable”.
class_name Interactable

class_name Interactable

And the raycast script will trigger this function on the interactable node to emit this signal which is then received by an interaction manager node that I set up to handle logic:

signal interacted(body)
func interact(body):
    emit_signal("interacted", body)

(Thanks to Nagi’s interaction tutorial)