PrimordialUniverse/modules/index.js

import CharactorManager from "./CharactorManager.js";
import common from "./utils/common.js";
import houseShader from "./shaders/houseShader.js";
import settings from "./utils/settings.js";

export default class App {

    constructor(engine) {
        
        var scene = new BABYLON.Scene(engine);
        this.scene = scene
        scene.collisionsEnabled = true;
    
        var camera1 = new BABYLON.ArcRotateCamera("camera1", 0, Math.PI / 2, 10, new BABYLON.Vector3(0, 0, 0), scene);
        scene.activeCamera = camera1;
        // scene.activeCamera.attachControl(scene.canvas, true);
        camera1.inertia = 0
        camera1.minZ = 0
        camera1.fov = settings.camera.fov
        camera1.fovMode = BABYLON.ArcRotateCamera.FOVMODE_HORIZONTAL_FIXED
        camera1.lowerBetaLimit = Math.PI / 2
        camera1.upperBetaLimit = Math.PI / 2
        camera1.lowerRadiusLimit = settings.camera.distanceFromCharactor;
        camera1.upperRadiusLimit = settings.camera.distanceFromCharactor;
        camera1.angularSensibilityX /= 2;
        this.camera = camera1
        this.lastCameraAlpha = 0

        // 人物相机射线
        this.ray = new BABYLON.Ray(new BABYLON.Vector3(0,0,0), new BABYLON.Vector3(0,0,1), 50);
        // BABYLON.RayHelper.CreateAndShow(this.ray, scene, new BABYLON.Color3(1, 0.1, 0.1));
    
        // Lights
        var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(0, -1, 0), scene);
        light.intensity = 1.0;
        light.specular = BABYLON.Color3.Black();
    
        var light2 = new BABYLON.HemisphericLight("dir01", new BABYLON.Vector3(0, 1, 0), scene);
        light2.intensity = 0.1;
        light2.position = new BABYLON.Vector3(0, 5, 5);
    
        // Skybox
        var skybox = BABYLON.MeshBuilder.CreateBox("skyBox", { size: 1000.0 }, scene);
        var skyboxMaterial = new BABYLON.StandardMaterial("skyBox", scene);
        skyboxMaterial.backFaceCulling = false;
        skyboxMaterial.reflectionTexture = new BABYLON.CubeTexture("textures/environment.env", scene);
        skyboxMaterial.reflectionTexture.coordinatesMode = BABYLON.Texture.SKYBOX_MODE;
        skyboxMaterial.diffuseColor = new BABYLON.Color3(0, 0, 0);
        skyboxMaterial.specularColor = new BABYLON.Color3(0, 0, 0);
        skybox.material = skyboxMaterial;

        this.init()
        this.bindEvents()
    }

    init() {

        let self = this
        BABYLON.SceneLoader.ImportMesh("", "../scenes/house/", "000.glb", this.scene, function (newMeshes, particleSystems, skeletons, animationGroups) {
            
            self.house = newMeshes
            self.house[0].position = new BABYLON.Vector3(0.6, 2.1, 1.5)
            // self.house[0].position = new BABYLON.Vector3(-22, 0, 12)

            let houseVideo = document.getElementById("houseTexture0")

            newMeshes.forEach(m => {
                // m.scaling.scaleInPlace(100);
                m._geometry && (m.checkCollisions = true)

                if(m.material) 
                {
                    BABYLON.Effect.ShadersStore['aFragmentShader'] = houseShader.fragment;
                    BABYLON.Effect.ShadersStore['aVertexShader'] = houseShader.vertex;
                
                    let shaderMaterial = new BABYLON.ShaderMaterial("shader", scene, { vertex: "a", fragment: "a", }, {
                        attributes: houseShader.attributes,
                        uniforms: houseShader.uniforms,
                        defines: houseShader.defines
                    });
                    
                    let videoTexture = new BABYLON.VideoTexture("", houseVideo, scene)
                    // document.getElementById("houseTexture0").play()
                    // document.getElementById("houseTexture0").loop = "loop"

                    shaderMaterial.setTexture("texture_video", videoTexture)
                    shaderMaterial.setVector3("focal_width_height", new BABYLON.Vector3(
                        864 * window.innerWidth / settings.video.width, 
                        settings.video.width * window.innerHeight / settings.video.height, 
                        window.innerHeight
                    ))
                    shaderMaterial.setFloat("isYUV", 0)

                    m.material = shaderMaterial
                }
            });

            self.charactorManager = new CharactorManager(self)
            self.charactorManager.importCharactorModel("../scenes/charactors/", "man_YXL.glb")
        });
    }

    bindEvents() {

        this.scene.onPointerObservable.add((pointerInfo) => {

            switch (pointerInfo.type) {
                case BABYLON.PointerEventTypes.POINTERDOWN:
                    this.lastFramePoint = new BABYLON.Vector2(pointerInfo.event.clientX, pointerInfo.event.clientY)
                    break;

                case BABYLON.PointerEventTypes.POINTERUP:
                    this.lastFramePoint = null
                    this.lastDirc = 0
                    break;

                case BABYLON.PointerEventTypes.POINTERMOVE:
                    if(this.lastFramePoint) this.cameraControl(pointerInfo)
                    break;

                case BABYLON.PointerEventTypes.POINTERWHEEL:
                    break;

                case BABYLON.PointerEventTypes.POINTERPICK:
                    break;

                case BABYLON.PointerEventTypes.POINTERTAP:
                    if(pointerInfo.pickInfo.hit && this.house.indexOf(pointerInfo.pickInfo.pickedMesh)) {
                        this.charactorManager.clickHouse()
                    }
                    break;

                case BABYLON.PointerEventTypes.POINTERDOUBLETAP:
                    break;
            }

        });

        this.scene.onBeforeAnimationsObservable.add(() => {

            if(this.charactorManager && this.charactorManager.charactor)
                this.charactorManager.onBeforeAnimation()

        })

        this.scene.onBeforeRenderObservable.add(() => {

            this.updateCameraPos()

        })
    }

    updateCameraPos() {

        if(!this.charactorManager || !this.charactorManager.charactor) return
        
        // 实时更新相机target
        let cameraTarget = this.charactorManager.charactor.mesh.position.clone()
        cameraTarget.y = settings.camera.height
        this.camera.setTarget(cameraTarget)

        // 相机碰撞检测
        this.ray.origin = cameraTarget
        this.ray.direction = BABYLON.Vector3.Normalize( this.camera.position.clone().subtract(cameraTarget) )
        let info = this.ray.intersectsMeshes(this.house)[0];
        const offset = 0 // 0.6
        if(!info || info.distance > settings.camera.distanceFromCharactor + offset) return
        let charactorVisi = this.charactorManager.charactor.visible
        this.camera.lowerRadiusLimit = Math.max( info.distance - offset, 0.1 )
        this.camera.upperRadiusLimit = Math.max( info.distance - offset, 0.1 )
        
        // 根据相机位置更新人物显隐
        if(info.distance - offset < 0.25 && charactorVisi) this.charactorManager.charactor.visible = false
        if(info.distance - offset >= 0.25 && !charactorVisi) this.charactorManager.charactor.visible = true

    }

    /**
     * 鼠标移动时，计算xoffset，得到旋转方向
     * xoffset越大，瞬时速度越快，转的角度就越大
     * 指定xoffset大于一定值的帧，根据旋转方向和角度请求视频，相机animation改alpha与视频一致
     * 视频旋转中，计算每帧的xoffset，如果方向没变，不再发出请求
     * 如果方向相反，根据瞬时速度请求新视频，并停止当前动画，播放新动画
     */
     cameraControl(pointerInfo) {
        
        if(!this.charactorManager || !this.charactorManager.charactor || !this.cameraControlEnable) return

        let charactor = this.charactorManager.charactor
        let currentFramePoint = new BABYLON.Vector2(pointerInfo.event.clientX, pointerInfo.event.clientY)
        let pointerOffset = currentFramePoint.clone().subtract(this.lastFramePoint).length()
        let dirc = Math.sign(this.lastFramePoint.x - currentFramePoint.x)
        if(!this.lastDirc) this.lastDirc = 0

        // 一般来说瞬时距离不会超过100，定100时转180度
        let alphaOffset = pointerOffset / 100 * Math.PI
        alphaOffset *= dirc

        if(charactor.actionType.split("-")[1] == "Walking") {
            // 行走时旋转相机，行走停止
            charactor.startWalk([], this.charactorManager)
        } 
        else if(dirc != 0 && dirc * this.lastDirc <= 0) {

            let currentPath = charactor.walkData.pathArr[charactor.walkData.currentPoint]
            let startPoint = (currentPath && currentPath.point) || charactor.mesh.position

            let pointData = this.charactorManager.getClosestPointData(startPoint)
            let sendData = {
                video: [pointData.id],
                reverse: dirc < 0
            }
            window.connection.socket.emit("getPush", sendData)

            this.rotateCamera(alphaOffset)
        }

        this.lastFramePoint = currentFramePoint
        this.lastDirc = dirc
    }

    rotateCamera(alphaOffset, func) {
        // todo
        let video0 = document.getElementById("houseTexture0")

        let startTime = Math.abs(this.camera.alpha) % (Math.PI * 2) / (Math.PI * 2) * video0.duration
        let durtime = Math.abs(alphaOffset / (Math.PI * 2) * video0.duration)

        if(video0.paused) {
            video0.currentTime = startTime
            video0.play()

            // if(dirc * this.lastDirc < 0) {
                // 清除已有动画再播新动画
                this.scene.stopAnimation(this.camera, "rotateCamera")
            // }

            const rotateAni = new BABYLON.Animation("rotateCamera", "alpha", settings.video.frameRate, 
                BABYLON.Animation.ANIMATIONTYPE_FLOAT, BABYLON.Animation.ANIMATIONLOOPMODE_RELATIVE);

            let rotateCameraFrameNum = settings.video.frameRate * durtime
            const rotateFrames = [{
                frame: 0,
                value: this.camera.alpha
            },{
                frame: rotateCameraFrameNum,
                value: this.camera.alpha + alphaOffset
            }]; 

            rotateAni.setKeys(rotateFrames);

            this.scene.beginDirectAnimation(this.camera, [rotateAni], 0, rotateCameraFrameNum, false, 1, 
                () => {
                    this.lastDirc = 0
                    video0.pause()
                    func && func()
                });
            
        } else {
            // console.error("-------------")
            video0.pause()
        }
    }

    lockCamera(isTrue) {
        this.cameraControlEnable = isTrue
        // this.camera.lowerAlphaLimit = isTrue ? this.camera.alpha : null
        // this.camera.upperAlphaLimit = isTrue ? this.camera.alpha : null
    }

    updateHouseVideo(video) {
        let videoTexture = new BABYLON.VideoTexture("", video, this.scene)
        this.house.forEach(mesh => {
            mesh.material && mesh.material.setTexture("texture_video", videoTexture)
        })
        video.play()
    }

}