world.coffee

define ['app/component/ground'], (Ground) ->
  class World
    constructor: ->
      @scene = new Physijs.Scene()
      @scene.setGravity(new THREE.Vector3(0, -30, 0))

      @init_camera()
      @init_light()

      ground = new Ground(new THREE.Vector3(100, 1, 100))
      @scene.add ground.body

      # mesh
      mesh_geometry = new THREE.CubeGeometry(10, 10, 10)
      mesh_material = new THREE.MeshLambertMaterial({ color: 0xff6666 },
        8, # high friction
        2 # low restitution
      )

      @mesh = new Physijs.BoxMesh(mesh_geometry, mesh_material, 3)
      @mesh.receiveShadow = true
      @mesh.translateY(20)
      @scene.add @mesh

    init_camera: ->
      @camera = new THREE.PerspectiveCamera(35, window.innerWidth / window.innerHeight, 1, 1000)
      @camera.position.set(60, 50, 60)
      @camera.lookAt @scene.position
      @scene.add @camera

    init_light: ->
      light = new THREE.AmbientLight(0x404040)
      @scene.add light

      directional_light = new THREE.DirectionalLight(0xffffff)
      directional_light.position.set(20, 40, -15)
      directional_light.target.position.copy(@scene.position)
      directional_light.castShadow = true
      directional_light.shadowCameraLeft = -60
      directional_light.shadowCameraTop = -60
      directional_light.shadowCameraRight = 60
      directional_light.shadowCameraBottom = 60
      directional_light.shadowCameraNear = 20
      directional_light.shadowCameraFar = 200
      directional_light.shadowBias = -0.0001
      directional_light.shadowMapWidth = 2048
      directional_light.shadowMapHeight = 2048
      directional_light.shadowDarkness = 0.7
      @scene.add directional_light

    update: ->
      delta_t = 0.001
      @scene.simulate(undefined, delta_t)