lingo3d/lib/systems/pooledPointLightSystem.js

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

import getIntensityFactor from "../memo/getIntensityFactor";
import { releasePointLight, requestPointLight } from "../pools/objectPools/pointLightPool";
import scene from "../engine/scene";
import { pointLightPoolPtr } from "../pointers/pointLightPoolPtr";
import { clearNumberPtrSystem } from "./clearNumberPtrSystem";
import createInternalSystem from "./utils/createInternalSystem";
const countPtr = [0];
clearNumberPtrSystem.add(countPtr);
export const pooledPointLightSystem = createInternalSystem("pooledPointLightSystem", {
    data: { visible: false },
    update: (self, data) => {
        const intensityFactor = getIntensityFactor(self);
        const visible = !!intensityFactor && ++countPtr[0] <= pointLightPoolPtr[0];
        if (visible && !data.visible) {
            const light = (self.$light = requestPointLight([], ""));
            self.object3d.add(light.outerObject3d);
            light.distance = self.distance;
            light.intensity = self.intensity;
            light.color = self.color;
            light.shadows = self.shadows;
            light.fade = self.fade;
        }
        else if (!visible && data.visible) {
            const light = self.$light;
            releasePointLight(light);
            scene.add(light.outerObject3d);
            light.intensity = 0;
            self.$light = undefined;
        }
        data.visible = visible;
    },
    sort: (a, b) => getIntensityFactor(b) - getIntensityFactor(a)
});
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