This site is currently in read-only mode during migration to a new platform.
You cannot post questions, answers or comments, as they would be lost during the migration otherwise.
0 votes

I have a "Main" node and associated with some menu buttons, one of 2 methods gets called. SpawnBlue, SpawnRed.

I want to spawn multiple Blue items along a Path2D
------BlueGuy *added as child in code below *

At top before ready() set this:

export var BlueGuyNode = preload("res:///Scenes/BlueGuy.tscn")

Then triggered by a button click, this gets called.

 func SpawnBlueGuy():
      var BlueGuy =  BlueGuyNode.instance() 
      var blueGuyPath = get_node("BluePath2D/BluePathFollow2D")
      blueGuyPath.offset = 0

What I am trying to get happen is that when the button is clicked the first time, BlueGuy gets spawned and begins walking around his path. Let's just say it is a circle and the starting position is 12 0'clock.

enter image description here

So next, let's say when he is at the 4 0'clock position and I click the button again, a second BlueGuy should spawn at 12 o'clock

enter image description here

What is happening, though, is that when the button is clicked for the second time, BlueGuy #1 gets jumped back to the starting position of the circle and BlueGuy #2 gets added in the same it looks like only 1 guy is there even though there are two.

And on the BlueGuy code, in ready() I am grabbing the BlueGuy path like this:

blueGuyPath = MainScene.get_node("BluePath2D/BluePathFollow2D")

and the movement is handled in _process like so:

func _process(delta: float) -> void:
    blueGuyPath.offset += 50 * delta

How can I update this code to let BlueGuy #1 keep his current position when the button is clicked a second time and BlueGuy #2 gets added to the path (at start position)? This happens even if I click Add 20 times (...I put a counter to test whether or not there were indeed multiple BlueGuy items and there is)

2D scenes

Godot version 3.4.2
in Engine by (12 points)

Note that physics_process() is the recommended way to handle movement, as it runs in a separate thread and should not be influenced by fps fluctuations.

1 Answer

0 votes

A PathFollow2d can only have one offset (or unit_offset) at a time, so reusing the same node for multiple blue guys would exhibit the described behaviour (also it should technically make the thing go faster with each added child). To achieve the desired effect you will need to create a separate PathFollow2d for each enemy spawned.

by (1,311 points)

Thank you, I appreciate the info. I'll try either multiple pathfollow2d objects or see if I can come up with a different approach...maybe a navigation style node.

If you really want to avoid using multiple PathFollow2d objects you can implement the mechanic yourself by calling the path's curve.interpolate_baked() with varying degrees of offset.

Welcome to Godot Engine Q&A, where you can ask questions and receive answers from other members of the community.

Please make sure to read Frequently asked questions and How to use this Q&A? before posting your first questions.
Social login is currently unavailable. If you've previously logged in with a Facebook or GitHub account, use the I forgot my password link in the login box to set a password for your account. If you still can't access your account, send an email to [email protected] with your username.