Orkuncakilkaya
808c4a6f7a
action Name { fields } is a typed record; reducer State on Action(s: mut State, a: Action) { ... }
in the module that owns the state takes exactly that state and the action (a second state is
refused); dispatch Action { fields } queues one from anywhere, the queue supplied by the runtime.
The queue is drained at the end of every phase of the frame loop, after every phase of ludic.base's
core_tick_all, and by drain_actions(): in dispatch order, each action's reducers in the order of
their states' names, an action a reducer dispatches queued behind, a queue still growing after 64
rounds stopped with the action named. Examples actions/pack, phases, runaway; rejects for a second
state, a reducer on a non-action and an unknown dispatch; ludic.base's actions_test; LANGUAGE.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
8 lines
293 B
Text
8 lines
293 B
Text
# 0.R: a reducer takes its own state and the action; what else it needs rides in the action
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program ReducerTwoStates {
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state Pack { n: int = 0 }
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state Wallet { cash: int = 0 }
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action Buy { cost: int }
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reducer Pack on Buy(p: mut Pack, w: mut Wallet) { p.n += 1 }
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entry { print(1) }
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}
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