Awesome

Narxim's GAS Example

A bare-bones Gameplay Ability System (GAS) example project to help you get started

A fully-setup example project!

GAS has a lot of moving parts and can be quite daunting to wrap your head around at first glance. I am providing this example project as a basis for learning how to properly set up your project to utilize all of its components. There are obviously many ways to set up your project, but I believe this example provides a simple, versatile base to build upon.

Other Features include:

• Thoroughly commented C++ code
• Example Blueprints
• Health Attribute Set (Includes Damage / Healing), Stamina Attribute Set and (New) Leveling Attribute set
• Stamina / Health Regeneration example (Based on Regeneration Attribute)
• (New) "Ability System Initialization Data" structure for initializing the Ability System Component
• (New) Ability Trigger / Release bindings tied directly to Enhanced Input (Not Gameplay Tag Based... yuck!)
• (New) Commonly used example Ability Tasks (Wait Enhanced Input Event / On Tick Event)
• (New) Native Gameplay Tags example (NativeGameplayTags.h)
• (New) Health Regeneration block after damage (3 seconds - Damage Volume)
• (Updated) Example UI elements with Attribute event bindings (In Game UI / Nameplate)
• GA Jump example with Stamina cost
• Player Character and Non Player Character class examples
• Example external Gameplay Effect application (Damage / Healing Volumes)

Check out the Unreal Source Discord if you have any questions!

Dan's (Tranek) GAS Documentation covers all of these concepts and provides a great breakdown of GAS overall. This repo was made as a starting point for getting set up and should be used alongside Dan's documentation. My intent is for devs who may not be as familiar with C++ or are just starting with GAS to have access to a more easily digestible setup example. Cheers!

Features

Ability System Initialization Data can be found in the Character class Blueprints.

You can specify:

• Which attribute sets to grant
• Initialize each attribute from a hard coded value or a Curve Float table ("CSV")
• Starting Gameplay Abilities
• Starting Gameplay effects

Leveling System

Press NumPad -/+ to Level up your character. This will reevaluate all Attribute initializers and adjust the Maximum atttributes.

All GAs and GEs will also have their levels updated.

GEs using Curve tables with multiple levels in them will now use the right leveled value.

ChangeLog:

2024/12/19:

- Adjusted C++ (removing Pyramids, refactoring some methods)
- Added TEXT() Macro
- Replaced ASC in BaseCharacter with Custom ASC pointer.
- Renamed AbilitySystemFunctionLibrary to CustomAbilitySystemBlueprintLibrary
- Changed ASC Initializer arrays to sets (better handling when subclassing)
- Enabled replication push model (better network performance, easier control)

Gameplay:
- Added Levels (+AbilitySystemWidget update)
Can now use NumPad -/+ to increase the character level
Tag "NoLevel" can be used on GE that shouldn't be updated.
Level will be shown on the UI (Nameplate + HUD).
Levels will adjust values in GAs, GEs and Attributes that are using Scalable float with Curve floats (instead of hardcoded values)

- Added Curves floats for Attribute initialization (replaces floats with Scalable Floats)
Using CSVs and automatic Curve float update (Just change the CSV, the Curve will be updated automatically)

- Created BP implementation of the Attribute Sets:
Best practice: Try as much as possible to use BP instances instead of classes if reference somewhere.