Variable: UI_ACTION_SLOTS

const UI_ACTION_SLOTS: 6 = 6;

"When this happens, do that" without a script (Unity's UnityEvent lists, Cocos's Click Events). Up to UI_ACTION_SLOTS slots, each: a trigger on this entity (on), a target entity (target, empty = this one), an action (do) and an optional value. Slots are plain fields so their targets are ordinary entity references (prefabs, duplicates and saving keep them linked); the editor shows only the slots in use.

Runs only while the game runs (UIActionsSystem).