lingo3d/lib/states/useTimeline.js

Lingo3D is a React/Vue 3d game development framework that ships with a complete visual editor

import store, { createEffect } from "@lincode/reactivity";
import { addDisposeStateSystem, deleteDisposeStateSystem } from "../systems/eventSystems/disposeStateSystem";
import { timelinePtr } from "../pointers/timelinePtr";
import { timelineFramePtr } from "../pointers/timelineFramePtr";
import { timelineFramePtrSystem } from "../systems/timelineFramePtrSystem";
export const [setTimeline, getTimeline] = store(undefined);
getTimeline((val) => {
    timelinePtr[0] = val;
    timelineFramePtr[0] = val ? 0 : -1;
});
createEffect(() => {
    const [timeline] = timelinePtr;
    if (!timeline)
        return;
    addDisposeStateSystem(timeline, { setState: setTimeline });
    timelineFramePtrSystem.add(timeline);
    return () => {
        deleteDisposeStateSystem(timeline);
        timelineFramePtrSystem.delete(timeline);
    };
}, [getTimeline]);
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