38 lines
1.1 KiB
TypeScript
38 lines
1.1 KiB
TypeScript
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import {createModel, Signal, signal} from '@preact/signals-core';
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import {createEntityCollection} from "../utils/entity";
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import {Part} from "./part";
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import {Region} from "./region";
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export type Context = {
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type: string;
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}
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export const GameContext = createModel((root: Context) => {
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const parts = createEntityCollection<Part>();
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const regions = createEntityCollection<Region>();
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const contexts = signal([signal(root)]);
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function pushContext(context: Context) {
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const ctxSignal = signal(context);
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contexts.value = [...contexts.value, ctxSignal];
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return context;
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}
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function popContext() {
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contexts.value = contexts.value.slice(0, -1);
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}
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function latestContext<T extends Context>(type: T['type']){
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for(let i = contexts.value.length - 1; i >= 0; i--){
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if(contexts.value[i].value.type === type){
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return contexts.value[i] as Signal<T>;
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}
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}
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}
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return {
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parts,
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regions,
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contexts,
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pushContext,
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popContext,
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latestContext,
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}
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})
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