Godot 4 3D Healthbar Shader

A 3D Healthbar Shader with recent damage delay, built for Godot 4 - no viewports needed!  

If this saved you some time, please drop a donation! 

When creating healthbars I had trouble finding good references for a basic shader-based 3D healthbar without needing viewports. So I built one, and decided to make it public! Enjoy the early access version.

I worked to make it as simple and flexible as possible, while allowing anyone to build off it. 

WHAT IS IT?

It's a simple drag and drop node = A resized Quadmesh with a Shader Material and a healthbar_controller script.

BEFORE SETUP:

Resize the QUADMESH to any size you want. However, the actual healthbar sizing is controlled by the BAR SIZE and BORDER THICKNESS separately. So I would suggest getting the size you'd like for your QUADMESH first, then adjusting BAR SIZE and BORDER THICKNESS last. Also, I recommend doing this with 3 distinct colours so it's easy to tell where the edges match up to.

1. SETUP:

Add this "healthbar" MeshInstance3D into an object and connect it in export/onready, then call setup_healthbar remotely

setup_healthbar(maximum_hp, current_hp)

1.5 SETUP LOCALLY:

If you'd prefer to setup locally by using the max values in this script, turn ON the bool "setup_in_ready"

2. TAKING DAMAGE

When taking damage, call update_healthbar with the new value.

update_healthbar(new_hp)

DAMAGE DELAY/SPEED

To make the damage delay take longer before kicking in, or slower to trickle down, adjust damage_update_delay and damage_update_speed

DEPTH IN 3D

The shader itself has depth_test_disabled. If you'd prefer to have your healthbars hidden by 3D objects based on position, remove that in render_mode.

PERSONAL AND COMMERCIAL USE

Go for it! No need to credit me or ask for permission. Donate if this saved you some time! Just don't resell.