Player and Avatar System in Decentraland

CRITICAL: The player Transform is READ-ONLY from scene code

Transform on engine.PlayerEntity is engine-controlled. Mutations from scene code are silently ignored — your code compiles, runs, no error is thrown, and nothing moves in-world. This is the most common bug when trying to lift, push, knock back, float, or teleport the player.

// WRONG — compiles cleanly, runs, does NOTHING in-world
const t = Transform.getMutable(engine.PlayerEntity)
t.position.y += 0.1                      // ignored
t.position = Vector3.create(8, 0, 8)     // ignored
Transform.createOrReplace(engine.PlayerEntity, { ... }) // ignored

Symptom to recognize: TypeScript accepts the code, the system ticks, no console error, but the avatar never moves. If you wrote Transform...PlayerEntity and expected motion, this is your bug.

Correct API by intent: