def stage

bendvy-ecs-core@0.1.0.4 · transaction.bend:45

import Base
import bendvy-ecs-core@0.1.0.4/deferred_command.bend as Deferred

45# Trusted adapter staging a raw World-transforming callback as a command.
46# It is not executed here; callbacks must obey their own authority/ownership
47# contracts. Prefer declared commands for ordinary gameplay.
48def stage(~W: Type, ~E: Data, tx: Tx<W, E>, command: W -> W) -> Tx<W, E>:
49  match tx:
50    case Tx{world, undo, commands, events,trace}:
51      Tx{world, undo, Deferred.Raw{command} <> commands, events,trace}