lingo3d/lib/engine/eventLoop.js

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

import { Cancellable } from "@lincode/promiselikes";
import { createEffect } from "@lincode/reactivity";
import { Clock } from "three";
import { getRenderer } from "../states/useRenderer";
import { getFps } from "../states/useFps";
import { STANDARD_FRAME } from "../globals";
import { dtPtr } from "../pointers/dtPtr";
import { fpsRatioPtr } from "../pointers/fpsRatioPtr";
import { fpsPtr } from "../pointers/fpsPtr";
import { rendererPtr } from "../pointers/rendererPtr";
import { getEditorRuntime } from "../states/useEditorRuntime";
import { getTabPaused } from "../states/useTabPaused";
const callbacks = new Set();
const clock = new Clock();
let delta = 0;
createEffect(() => {
    if (getEditorRuntime() || getTabPaused())
        return;
    const targetDelta = (1 / fpsPtr[0]) * 0.9;
    rendererPtr[0].setAnimationLoop(() => {
        delta += clock.getDelta();
        if (delta > 0.2)
            delta = 0;
        if (delta < targetDelta)
            return;
        fpsRatioPtr[0] = delta * STANDARD_FRAME;
        dtPtr[0] = delta;
        delta = 0;
        for (const cb of callbacks)
            cb();
    });
    return () => {
        rendererPtr[0].setAnimationLoop(null);
    };
}, [getFps, getRenderer, getEditorRuntime, getTabPaused]);
export const loop = (cb) => {
    callbacks.add(cb);
    return new Cancellable(() => callbacks.delete(cb));
};
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