用threejs 技术做游戏跑酷

创建画布，相机

container = document.getElementById('threejs')
  camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 300000 )
camera.position.set( 0, 150, 400 )
scene = new THREE.Scene()

// 设置画布背景透明
  scene.background = null

创建灯光

const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x444444 )
  hemiLight.position.set( 0, 200, 0 )
  scene.add( hemiLight )

  # new THREE.HemisphereLight 可以创建更加贴近自然的户外光照效果
  # color：从天空发出的光线的颜色
  # groundColor：从地面发出的光线的颜色
  # intensity：光源照射的强度。默认值为：1。
  # position：光源在场景中的位置。默认值为：(0, 100, 0)
  #  visible：设为 ture（默认值），光源就会打开。设为 false，光源就会关闭。







  const dirLight = new THREE.DirectionalLight( 0xffffff )
  dirLight.position.set( 0, 200, 100 )
  // dirLight.castShadow = true
  dirLight.shadow.camera.top = 180
  dirLight.shadow.camera.bottom = - 100
  dirLight.shadow.camera.left = - 120
  dirLight.shadow.camera.right = 120
  scene.add( dirLight )
  
  /** new THREE.DirectionalLight 平行光 被平行光照亮的整个区域接收到的光强是一样的。光是平行的 directionalLight.shadow.camera.near = 20; //产生阴影的最近距离 directionalLight.shadow.camera.far = 200; //产生阴影的最远距离 directionalLight.shadow.camera.left = -50; //产生阴影距离位置的最左边位置 directionalLight.shadow.camera.right = 50; //最右边 directionalLight.shadow.camera.top = 50; //最上边 directionalLight.shadow.camera.bottom = -50; //最下面 //这两个值决定使用多少像素生成阴影 默认512 directionalLight.shadow.mapSize.height = 1024; directionalLight.shadow.mapSize.width = 1024; */

创建材质和地面

floor = new THREE.MeshPhongMaterial( {
    
    color: '#ffffff'
} )

/** THREE.MeshPhongMaterial，可以创建一种光亮的材质 它可以模拟具有镜面高光的光泽表面（如上漆木材） ambient 这是材质的环境色。它与上一章讲过的环境光源一起使用。这个颜色会与环境光源提供的颜色相乘。默认值为白色 emissive 这是该材质发射的颜色。它其实并不想一个光源，只是一种纯粹的、不受其他光照影响的颜色。默认值为黑色。 specular 该属性指定该材质的光亮程度及高光部分的颜色。如果将它设置成与color属性相同的颜色，将会得到一个更加类似金属的材质。如果将它设置成灰色（grey），材质将变得更像塑料 shininess 该属性指定镜面高光部分的亮度。默认值为30 metal 如果此属性设置为true，Three.js会使用稍微不同的方式计算像素的颜色，以使物体看起来更像金属。要注意的是，这个效果非常小 wrapAround 如果这个属性设置为true，则启动半lambert光照技术。有了它，光下降得更微妙。如果网格有粗糙、黑暗的地区，启用此属性阴影将变得柔和并且分布更加均匀 wrapRGB 当wrapAround属性设置为true时，可以使用THREE.Vector3来控制光下降得速度 */


const loaderImage = new THREE.TextureLoader()
/** loader 图片资源 */
  loaderImage.load(paodaoPng, (texture) => {
    
      texture.wrapS = THREE.RepeatWrapping
      texture.wrapT = THREE.RepeatWrapping
      texture.repeat.set(1, 15)
      floor.map = texture
      floorMesh = new THREE.Mesh( new THREE.PlaneGeometry( 150, 21000 ), floor )
      floorMesh.rotation.x = - Math.PI / 2
      floorMesh.receiveShadow = true
      scene.add( floorMesh )
    },
    (xhr) => {
    
      // console.log( (xhr.loaded / xhr.total * 100) + '% loaded' )
    },
    (error) => {
    
      console.log( 'error' )
    },
  )
  
  /** PlaneGeometry 是二维平面几何体，看上去是扁平的，因为它只有两个维度，给定宽高，即可创建这种几何体 PlaneGeometry(width : Float, height : Float, widthSegments : Integer, heightSegments : Integer) width：沿着X轴的宽度，默认值为1 height：沿着Y轴的高度，默认为1 widthSegments ：宽度分段数，默认为1 heightSegments：高度分段数，默认为1 */
  
  

创建左右两边地面

 const loaderImageLeftRight = new THREE.TextureLoader()
    loaderImageLeftRight.load(`${
      hrefs.value}${
      dir.value}/a.png`, (texture2) => {
    
      texture2.wrapS = THREE.RepeatWrapping
      texture2.wrapT = THREE.RepeatWrapping
      texture2.repeat.set(10, 20)
      floor2.map = texture2

      floorMesh2 = new THREE.Mesh( new THREE.PlaneGeometry( 1100, 20000), floor2 )
      floorMesh2.rotation.x = - Math.PI / 2
      floorMesh2.position.x = -626
      floorMesh2.name = 'floorMesh2'

      floorMesh3 = new THREE.Mesh( new THREE.PlaneGeometry( 1100, 20000), floor2 )
      floorMesh3.rotation.x = - Math.PI / 2
      // floorMesh2.rotation.y = - Math.PI / 1
      floorMesh3.position.x = 628
      floorMesh3.name = 'floorMesh3'

      scene.add( floorMesh2, floorMesh3)

    }, (xhr) => {
    
      console.log( (xhr.loaded / xhr.total * 100) + '% loaded' )
    }, (error) => {
    
      console.log('error')
    })

创建路灯

importGltfLoader('Light.gltf', `${
      hrefs.value}${
      dir.value}/d`, 'Light')

const importGltfLoader = (gltfurl: string, setPath: string, type?: string) => {
    
      let gltfLoader = new GLTFLoader()
      gltfLoader.setPath(setPath)
      gltfLoader.load(gltfurl, (gltf) => {
    
        if (gltf) {
    
          if (gltf.scene && gltf.scene.children && gltf.scene.children.length > 0) {
    
            if (type === 'light') {
    
              gltf.scene.children.map((item) => {
    
                // item.scale.setScalar(200000000000)
                // item.position.set(0, 0, 0)
              })
              gltf.scene.scale.setScalar(0.9)
              gltf.scene.name = 'dcw-glob'
              gltf.scene.position.y = 0
              gltf.scene.position.x = 0
              gltf.scene.position.z = -300
              a = gltf.scene.clone()
                
          }
        }
      }, (xhr) => {
    
        // called while loading is progressing
        // console.log(`${(xhr.loaded / xhr.total * 100)}% loaded`)
      },
      (error) => {
    
        // called when loading has errors
        // console.error('An error happened', error)
      })
    }
    
    // new GLTFLoader() loading 路灯模型

创建业务logo 模型 建筑模型

const importObj = () => {
    
  
  let mtlLoader = new MTLLoader()
  mtlLoader.setPath(`${
      hrefs.value}${
      dir.value}b/`)
        //加载mtl文件
        mtlLoader.load('city.mtl', function (material) {
    
            let objLoader = new OBJLoader()
            //设置当前加载的纹理
            objLoader.setMaterials(material)
            objLoader.setPath(`${
      hrefs.value}${
      dir.value}/b`)
            objLoader.load('a.obj', function (object) {
    
              if (object.children && object.children.length > 0) {
    
                
                for(let i=0; i< object.children.length; i++) {
    
                  if(i === 2) {
    
                    cityMesh = object.children[185].clone()
                    cityMesh.name = 'city-dcw'
                  }
                  if(i === 1) {
    
                    cityMesh2 = object.children[185].clone()
                    cityMesh.name = 'city-dcw'
                  }
                }
                // let scale = new colorsFn().chroma.scale(['yellow', '008ae5'])
                // let color = scale(Math.random()).hex()
                cityMesh.position.set(-1682, -2, -2000)
                cityMesh.scale.setScalar(8.8)
                cityMesh.material.map((item) => {
    
                  item.color = new THREE.Color('#1890ff')
                  item.transparent = true
                  item.opacity = 0.6
                })
                cityMesh2.position.set(-2400, -2, -4500)
                cityMesh2.scale.setScalar(8.8)
                // cityMesh2.material.color = new THREE.Color('yellow')
                cityMesh2.material.transparent = true
                cityMesh2.material.opacity = 0.7
                cityGroup.add(cityMesh, cityMesh2)
                let image = new THREE.TextureLoader()
                image.load(`${
      hrefs.value}${
      dir.value}/static/logo/b.png`, (img) => {
    
                  img.wrapS = THREE.RepeatWrapping
                  img.wrapT = THREE.RepeatWrapping
                  img.matrixAutoUpdate = false
                  // img.repeat.set(1, 1)
                  let imgM = new THREE.MeshBasicMaterial({
    
                    map: img,
                    color: '#ffffff',
                    transparent: true,
                    opacity: 0.9
                  })
  
   

                image.load(`${
      hrefs.value}${
      dir.value}logo/xiaodoubao.png`, (img) => {
    
                  img.wrapS = THREE.RepeatWrapping
                  img.wrapT = THREE.RepeatWrapping
                  img.matrixAutoUpdate = false

                  let imgM = new THREE.MeshBasicMaterial({
    
                    map: img,
                    color: '#ffffff',
                    transparent: true,
                    opacity: 0.8,
                    // wireframe: true
                  })
                  const geometry = new THREE.BoxGeometry( 185.1, 49.0, 49.1)
                  cityPaiMaiLogo = new THREE.Mesh(geometry, imgM)
                  cityPaiMaiLogo.rotation.x = Math.PI * 1.5
                  cityPaiMaiLogo.position.set(-590, 20, -3300)
                  cityGroup.add(cityPaiMaiLogo)

                })

                
            })
        });
}

// let mtlLoader = new MTLLoader() obj 模型loding

添加游戏主角

const loader = new FBXLoader()

loader.load( `${
      hrefs.value}${
      dir.value}/d/a.fbx`, function ( object ) {
    
    object.name = 'a-dcw'
    mixer = new THREE.AnimationMixer( object )
    object.scale.setScalar(0.08)
    object.rotateY(Math.PI * 3)
    // object.traverse( function ( child ) {
    
    // if ( (child as any).isMesh ) {
    
    // child.castShadow = true
    // child.receiveShadow = true
    // }
    // } )
    object.position.y = 25
    
    scene.add(object)
    aBox3d = new THREE.Box3()
    aBox3d.setFromObject(object)
    aBox3d.name = 'a-dcw-box3'

    aBoxHelper = new THREE.BoxHelper(object, 0xff0000)
    scene.add(aBoxHelper)
  })
  
  // const loader = new FBXLoader() // loding 游戏主角模型 
  // 添加游戏动态及动画 mixer = new THREE.AnimationMixer( object )
  
  

渲染画布设置画布大小

  renderer = new THREE.WebGLRenderer( {
     alpha: true, antialias: true } )
  renderer.setPixelRatio( window.devicePixelRatio )
  renderer.setSize( window.innerWidth, window.innerHeight )
  // renderer.shadowMap.enabled = true
  container.appendChild( renderer.domElement )
  renderer.setClearColor(0xEEEEEE, 0.0)
  // 设置背景透明
  scene.background = null

模型动起来

animate()

floor.map.offset.y += (0.0009 * globSpeed.value) // 跑道走动

// 创建金币及障碍物
const runIf = randomInt(0, 3)
const numberGlob = randomInt(1, 15)
const Y = [20, 45, 65]
const numberY = randomInt(0, 3)
const difficulty = randomInt(0, 3)
const numberZ = randomInt(1000, 1500)
const time = randomInt(1200, 2800)
numberGlobNumber.value ++
if (numberGlobNumber.value % 2 === 1) {
    
  globs(runIf, numberGlob, Y[numberY], difficulty, numberZ, time)
}

// 金币Z 位置
const meshPosition = (cloneMesh, numberX, numberY, numberZ, Z, i, type) => {
    
  const mesh = cloneMesh.clone()
  mesh.position.set(numberX, numberY, -i * numberZ - zNumber.value - Z)
  mesh.name = `glob${
      i}`
  globGroup.add(mesh)
}

// 障碍物Z位置
const meshPositionObstacles = (cloneMesh, numberX, numberY, numberZ, Z, i, type) => {
    
  const mesh = cloneMesh.clone()
  mesh.position.set(numberX, numberY, -i * numberZ - zNumber.value - Z)
  mesh.name = `obstacle`
  globGroup.add(mesh)
}

// 更新模型动画
    const delta = clock.getDelta()
    if ( mixer ) mixer.update( delta )
    
// 

撞击金币及障碍物逻辑

for(const item of globGroup.children) {
    
            // 创建撞击盒子
          let itemBox3 = new THREE.Box3()
          itemBox3.setFromObject(item)
          // 看看是否碰撞到
          if (aBox3d) {
    
            if (aBox3d.intersectsBox(itemBox3)) {
    
               // 障碍物撞击
              if (item.name === "obstacle") {
    
                item.name = 'start-on'
                // 没积分没复活卡 吐司后跳转结束页面
                if (resurrectionSkp.value <= 0) {
    
                  const gameNoHref = encodeURIComponent(window.btoa(gameNo.value))
                  window.location.replace(`${
      hrefs.value}/b.html`)
                  start.value = false
                } else {
    
                  start.value = false
                  if ((integralsNumber.value <=1 && resurrection.value <= 0) ) {
    
                    TostSkipOver.value = true
                    globGroup.traverse(function(obj) {
    
                      if (obj.type === 'Mesh') {
    
                        (obj as any).geometry.dispose();
                        (obj as any).material.dispose();
                      }
                    })
                    window.location.replace(`${
      hrefs.value}/over.html`)
                  } else {
    
                    itemBox3.makeEmpty()
                    itemBox3 = null
                    globGroup.remove(item)

                    globGroup.traverse(function(obj) {
    
                      if (obj.type === 'Mesh') {
    
                        (obj as any).geometry.dispose();
                        (obj as any).material.dispose();
                      }
                    })
                    scene.remove(globGroup)
                    processTimeFn()
                    closeHelp.value = true
                    closeRequestAnimationFrame.value = true
                    setTimeout(() => {
    
                      globGroup = new THREE.Group()
                      scene.add(globGroup)
                    }, 11000)
                  }
                }
              }
              // 金币撞击
              if (item.name !== "obstacle") {
    
                if (globNumber.value >= 1000) {
    } else {
    
                  if (!A.value) {
    } else {
    
                    globNumber.value++
                    globNumberCopy.value++
                  }
                }
                globGroup.remove(item)
                
                }
              }
            } else {
    
              if (item.position.z - 210 >= -zNumber.value) {
    
                globGroup.remove(item)
              }
            }
          }
      }

操控 手机端上下左右滑动

const EventUtil = {
    
  addHandler: function (element, type, handler) {
    
    if (element.addEventListener)
      element.addEventListener(type, handler, false);
    else if (element.attachEvent)
      element.attachEvent("on" + type, handler);
    else
      element["on" + type] = handler;
  },
  removeHandler: function (element, type, handler) {
    
    if(element.removeEventListener)
      element.removeEventListener(type, handler, false);
    else if(element.detachEvent)
      element.detachEvent("on" + type, handler);
    else
      element["on" + type] = handler;
  },
  /** * 监听触摸的方向 * @param target 要绑定监听的目标元素 * @param isPreventDefault 是否屏蔽掉触摸滑动的默认行为（例如页面的上下滚动，缩放等） * @param upCallback 向上滑动的监听回调（若不关心，可以不传，或传false） * @param rightCallback 向右滑动的监听回调（若不关心，可以不传，或传false） * @param downCallback 向下滑动的监听回调（若不关心，可以不传，或传false） * @param leftCallback 向左滑动的监听回调（若不关心，可以不传，或传false） */
  listenTouchDirection: function (target, isPreventDefault, upCallback, rightCallback, downCallback, leftCallback) {
    
      this.addHandler(target, "touchstart", handleTouchEvent, {
     passive: false });
      this.addHandler(target, "touchend", handleTouchEvent);
      this.addHandler(target, "touchmove", handleTouchEvent);
      var startX;
      var startY;
      function handleTouchEvent(event) {
    
          switch (event.type){
    
              case "touchstart":
                  startX = event.touches[0].pageX;
                  startY = event.touches[0].pageY;
                  break;
              case "touchend":
                  var spanX = event.changedTouches[0].pageX - startX;
                  var spanY = event.changedTouches[0].pageY - startY;

                  if(Math.abs(spanX) > Math.abs(spanY)){
          //认定为水平方向滑动
                      if(spanX > 0){
             //向右
                          if(rightCallback)
                              rightCallback()
                      } else if(spanX < 0){
     //向左
                          if(leftCallback)
                              leftCallback()
                      }
                  } else {
                                        //认定为垂直方向滑动
                      if(spanY > 0){
             //向下
                          if(downCallback)
                              downCallback();
                      } else if (spanY < 0) {
    //向上
                          if(upCallback)
                              upCallback();
                      }
                  }

                  break;
              case "touchmove":
                  //阻止默认行为
                  if(isPreventDefault)
                      event.preventDefault();
                  break;
          }
      }
  }
};
export default EventUtil

// 实例化操控组件
EventUtil.listenTouchDirection(document, true, up, right, down, left)

const up = () => {
    

  if(start.value) {
    
    if (!upStop.value) {
    
      upStop.value = true
      if (scene && scene.getObjectByName) {
    
        let a = scene.getObjectByName('a-dcw')
        const aY = JSON.stringify(a.position.y + 120)
        const aCY = JSON.stringify(a.position.y)
        let y = false
        time = setInterval(() => {
    
          if (a.position.y >= aY) {
    
            y = true
            if (a.position.y <= aCY) {
    
              clearInterval(time)
            }
            a.position.y = a.position.y - 7
            if (a.position.z > 0) {
    
              a.position.z = 100
            }
            if (a.position.z < -4500) {
    
              a.position.z = -4500
            }
            aBox3d = new THREE.Box3()
            aBox3d.setFromObject(a)
            aBoxMove(a)
          } else {
    
            if (!y) {
    
              a.position.y = a.position.y + 5
              if (a.position.z > 0) {
    
                a.position.z = 100
              }
              if (a.position.z < -4500) {
    
                a.position.z = -4500
              }
              aBox3d = new THREE.Box3()
              aBox3d.setFromObject(a)
              aBoxMove(a)
            } else if (y){
    
              a.position.z = a.position.z - 18
              a.position.y = a.position.y - 7
              if (a.position.z > 0) {
    
                a.position.z = 100
              }
              if (a.position.z < -4500) {
    
                a.position.z = -4500
              }
              aBox3d = new THREE.Box3()
              aBox3d.setFromObject(a)
              if (a.position.y <= 0) {
    
                upStop.value = false
                clearInterval(time)
                atime = setInterval(() => {
    
                  a.position.z = a.position.z + 5
                  if (a.position.z > 0) {
    
                    a.position.z = 100
                  }
                  if (a.position.z < -4500) {
    
                    a.position.z = -4500
                  }
                  aBox3d = new THREE.Box3()
                  aBox3d.setFromObject(a)

                  if (a.position.z >= -20 || !start.value) {
    
                    a.position.z = 0
                    aBox3d = new THREE.Box3()
                    aBox3d.setFromObject(a)
                    clearInterval(atime)
                  }
                }, 3)
              }
              aBoxMove(a)
            }
          }
        }, 12)
      }
    }
  }
}
const right = () => {
    
  if (start.value) {
    
    if (scene && scene.getObjectByName) {
    
      const a = scene.getObjectByName('a-dcw')
      if (a.position.x > 30) {
    
      } else {
    
        a.position.x = a.position.x + 40
        // aBox3d = new THREE.Box3()
        // aBoxHelper = new THREE.BoxHelper(a, 0xff0000)
        // scene.add(aBoxHelper)
        aBox3d.setFromObject(a)
        aBoxMove(a)
      }
    }
  }
}
const down = () => {
    
  // console.log("action:down");
}
const left = () => {
    
  if (start.value) {
    
    if (scene && scene.getObjectByName) {
    
      const a = scene.getObjectByName('a-dcw')
      if (a.position.x < -35) {
    
      } else {
    
        a.position.x = a.position.x - 40
        aBox3d = new THREE.Box3()
        aBox3d.setFromObject(a)
        aBoxMove(a)
      }
    }
  }
}

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