def track_pending

bendvy-ecs-core@0.1.0.4 · commands.bend:52

import Base
import bendvy-ecs-core@0.1.0.4/world.bend as W
import bendvy-ecs-core@0.1.0.4/transaction.bend as T

52# Only successful actual deferred spawns establish pending authority. The inverse
53# clears at the World's current capacity after any intervening growth.
54def track_pending(~S:Data,~C:Type,~R:Type,~E:Data,tx:T.Tx<W.World<S,C,R,E>,E>,+handle:W.Handle<S>) -> T.Tx<W.World<S,C,R,E>,E>:
55  match tx:
56    case T.Tx{world,undo,commands,events,trace}:T.Tx{W.mark_pending(~S,~C,~R,~E,world,handle),(w => W.clear_pending(~S,~C,~R,~E,w,handle)) <> undo,commands,events,trace}