Gameplay Ability System

Blueprint AI authors the full Gameplay Ability System surface — ability, effect and cue Blueprints, attribute sets, and the gameplay-tag registry they depend on.

Note

GAS is a conditional domain: it is available when the engine’s GameplayAbilities plugin is enabled. Ask the AI to “check if the Gameplay Ability System is available” and it reports the build state.

Gameplay tags

Tags come first — abilities and effects reference them, so register them before wiring.

Register the gameplay tags Ability.Dash, Ability.Attack.Melee, and State.Stunned Register a transient (session-only) tag Debug.GodMode

Abilities

Create a Gameplay Ability called GA_Dash in /Game/Abilities Set GA_Dash’s AbilityTags to Ability.Dash and its ActivationBlockedTags to State.Stunned Set GA_Dash’s instancing policy to InstancedPerActor and net execution policy to LocalPredicted Describe the gameplay ability GA_Dash

Gameplay effects

Create a Gameplay Effect called GE_DashCost in /Game/Abilities Make GE_DashCost an instant effect that subtracts 25 from the Stamina attribute on MyAttributeSet Create GE_Burning as a duration effect lasting 5 seconds with a 1-second period Set GE_Burning’s GrantedTags to State.Burning

Attribute sets

Create an Attribute Set called PlayerAttributeSet in /Game/Abilities Add Health, MaxHealth, Stamina, and MoveSpeed attributes to PlayerAttributeSet Describe the attribute set PlayerAttributeSet

Gameplay cues

Create a Gameplay Cue Notify (actor) called GC_DashTrail in /Game/Abilities Set its cue tag to GameplayCue.Ability.Dash

Tip

Cost and cooldown effect classes, stacking, and other scalar policies on an ability or effect are set with the generic CDO property ops — just describe the desired value: “set GE_Burning’s StackingType to AggregateBySource”.