Godot Signals & Groups (4.x) Decouple nodes with the observer pattern (signals) and act on many nodes at once (groups), instead of hard-coding references between scenes. Targets Godot 4.7 . When to use - Use when a node needs to tell others "something happened" (player died, item picked up, wave cleared) without holding direct references to them. - Use when you need to address a whole category of nodes at once ("pause all enemies", "save every checkpoint"). When not to use: raw signal syntax basics → ; scene structure and instancing → . For cross-scene global events, emit from an autoload (se…