How to set a slot/sprite's colour in GDScript?

Hhonie · 2月1日

I've created a Spine 2D rig for a customizable character that's fully grayscale, so that each slot can be later changed in code individually to generate different skin tones, hair and clothes colours, etc.

Attempting to implement this into Godot, I don't see a function to change a sprite or a slot's colour in GDScript, like it's currently possible in the Spine 2D editor. The official examples include a way of using a shader, but this affects the entire SpineSprite, not a specific region. Is there a function in the Spine Godot runtime that I can use to achieve this result?

Spinebot · 2月1日

To change the color of a specific slot in a SpineSprite using GDScript, you can use the SpineSlot object associated with the slot you want to modify. The SpineSlot object provides a method to set the color. Here's an example of how you can achieve this:

extends SpineSprite

func _ready():
    var skeleton = get_skeleton()
    var slot = skeleton.find_slot("slot_name") # Replace "slot_name" with the name of your slot
    if slot:
        slot.set_color(Color(1, 0, 0, 1)) # Set the color to red with full opacity

In this example, find_slot("slot_name") is used to get the SpineSlot object for the slot you want to change. Then, set_color(Color(r, g, b, a)) is used to set the color, where r, g, b, and a are the red, green, blue, and alpha components of the color, respectively.

This approach allows you to change the color of individual slots without affecting the entire SpineSprite.

Hhonie · 2月1日

Spinebot

The syntax is correct (I totally missed SpineSlot's get and set color functions while looking through the docs) but it doesn't seem to solve the issue. While the color is set properly - printing out the color after setting it shows the change - it doesn't appear to apply on runtime.

Hhonie · 2月1日

Removing skeleton.set_slots_to_setup_pose() has fixed the issue!