Scene Graph Prefabs

A prefab is a saved entity template — define it once (mesh + components + values) and stamp out many copies. Spawn enemies, pickups or props from one prefab so they all share setup.

Updated 2026-06-29

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In Scene Graph, a prefab is a saved entity template — a mesh plus its components plus its starting values, all bundled together. Build your goblin once, then drop it into your level as many times as you want.

Think of a blueprint that stamps out identical goblins. Each stamp carries the same mesh, the same health, the same behavior — change the blueprint and every copy updates.

Here our goblin_spawner stores EnemyType, a concrete entity type — that's the prefab. Spawn returns a fresh entity by writing EnemyType{}, which stamps out one copy. In OnBegin we call Spawn to get a brand-new goblin in the world.

Define the prefab once, then spawn copies whenever you need them — every enemy starts identical.

goblin_spawner := class:
    EnemyType : concrete_subtype(entity)
    Spawn() : entity =
        EnemyType{}
    OnBegin<override>()<suspends> : void =
        NewGoblin := Spawn()

Build your own lesson with scene_graph_prefabs

Build your own lesson with `scene_graph_prefabs`