src/examples/fbx-loader-and-animations-hitbox.html

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<html lang="en">
  <head>
    <meta charset="UTF-8" />
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      name="viewport"
      content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover"
    />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>FBX Loader and Animations (with Hitbox)</title>
    <link rel="stylesheet" href="/css/examples.css?ver=1.0.0" />
    <script src="/js/examples.js?ver=1.1.1"></script>
    <script src="/lib/phaser.min.js?ver=3.52.0"></script>
    <script src="/lib/enable3d/enable3d.phaserExtension.0.25.4.min.js"></script>
  </head>

  <body>
    <div id="info-text">
      The cube on the left hand has a physics body.<br />The cube on the right hand has no physics body.
    </div>
    <script>
      const { enable3d, Scene3D, Canvas, THREE, ExtendedObject3D } = ENABLE3D

      class MainScene extends Scene3D {
        constructor() {
          super({ key: 'MainScene' })
        }

        init() {
          this.accessThirdDimension()
        }

        create() {
          this.third.warpSpeed()
          this.third.camera.position.set(20, 20, 40)

          this.third.physics.debug.enable()

          // These assets are from mixamo.com
          // The the Idle.fbx contains the skin and the idle animation.

          const robot = new ExtendedObject3D()
          const animations = ['Jumping', 'LookingAround', 'Running', 'BodyJabCross', 'HipHopDancing']
          const pos = { x: 0, y: 5, z: 0 }

          let boxWithoutPhysics

          this.third.load.fbx('/assets/fbx/Idle.fbx').then(object => {
            robot.add(object)

            this.third.animationMixers.add(robot.anims.mixer)

            robot.anims.add('Idle', object.animations[0])
            robot.anims.play('Idle')

            // attach a cube to the left hand
            robot.traverse(child => {
              if (child.name === 'mixamorigLeftHandIndex1') {
                // box with physics
                if (!this.box) {
                  // collisionFlags 2 = kinematic
                  // collisionFlags 6 = kinematic and ghost
                  this.box = this.third.physics.add.box({ width: 1, height: 1, depth: 1, collisionFlags: 6 })
                  this.box.customParams = { child }
                }
              }
              if (child.name === 'mixamorigRightHandIndex1') {
                // box without physics
                if (!boxWithoutPhysics) {
                  boxWithoutPhysics = this.third.add.box({ width: 1, height: 1, depth: 1 })

                  // execute this later
                  Promise.resolve().then(() => {
                    // get bone position
                    const pos = new THREE.Vector3()
                    child.getWorldPosition(pos)
                    // copy bone position to box
                    boxWithoutPhysics.position.copy(pos)
                    // Attach box to bone
                    child.attach(boxWithoutPhysics)
                  })
                }
              }
            })

            robot.traverse(child => {
              if (child.isMesh) child.castShadow = child.receiveShadow = true
            })

            robot.scale.set(0.05, 0.05, 0.05)
            robot.position.set(pos.x, pos.y, pos.z)

            this.third.add.existing(robot)
            this.third.physics.add.existing(robot, { shape: 'box', offset: { y: -0.5 } })

            // load more animations
            animations.forEach(key => {
              if (key === 'Idle') return
              this.third.load.fbx(`/assets/fbx/${key}.fbx`).then(object => {
                robot.anims.add(key, object.animations[0])
              })
            })

            this.time.addEvent({
              delay: 2500,
              loop: true,
              callback: () => {
                const anim = Phaser.Math.RND.pick(animations)
                console.log(`Set animation ${anim}`)
                robot.anims.play(anim, 350)
              }
            })
          })
        }

        update() {
          if (this.box && this.box.body) {
            const child = this.box.customParams.child
            const pos = child.getWorldPosition(new THREE.Vector3())
            this.box.position.copy(pos)
            this.box.rotation.copy(child.rotation)
            this.box.body.needUpdate = true
          }
        }
      }

      const config = {
        type: Phaser.WEBGL,
        transparent: true,
        scale: {
          mode: Phaser.Scale.FIT,
          autoCenter: Phaser.Scale.CENTER_BOTH,
          width: window.innerWidth * Math.max(1, window.devicePixelRatio / 2),
          height: window.innerHeight * Math.max(1, window.devicePixelRatio / 2)
        },
        scene: [MainScene],
        ...Canvas()
      }

      window.addEventListener('load', () => {
        enable3d(() => new Phaser.Game(config)).withPhysics('/lib/ammo/kripken')
      })
    </script>
  </body>
</html>