mylingo3d/lib/display/cameras/FirstPersonCamera.js

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

import CharacterCamera from "../core/CharacterCamera";
import { Reactive } from "@lincode/reactivity";
import getWorldPosition from "../utils/getWorldPosition";
import getWorldQuaternion from "../utils/getWorldQuaternion";
import { onBeforeRender } from "../../events/onBeforeRender";
export default class FirstPersonCamera extends CharacterCamera {
    static componentName = "firstPersonCamera";
    constructor() {
        super();
        const cam = this.camera;
        this.watch(onBeforeRender(() => {
            cam.position.copy(getWorldPosition(this.object3d));
            cam.quaternion.copy(getWorldQuaternion(this.object3d));
        }));
        this.createEffect(() => {
            const target = this.targetState.get();
            const innerYSet = this.innerYSetState.get();
            if (!target || !("height" in target) || innerYSet)
                return;
            super.innerY = target.height * 0.4;
            return () => {
                super.innerY = 0;
            };
        }, [this.targetState.get, this.innerYSetState.get]);
    }
    innerYSetState = new Reactive(false);
    get innerY() {
        return super.innerY;
    }
    set innerY(val) {
        super.innerY = val;
        this.innerYSetState.set(true);
    }
}
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