Getting acquainted with Craft

Comments

• dave1707 Mod

  September 2019 Posts: 8,445

  @brianolive In Craft, you move the camera. Here's a small example of attaching the camera to a moving object. Tilt the device left or right to turn.

  displayMode(FULLSCREEN)
  
  function setup()
      bx,bz=0,0   -- initial block position
      vel=.2      -- velocity
      dir=0
  
      scene = craft.scene()
  
      ground=scene:entity()
      ground.model = craft.model.cube(vec3(1000,1,1000))
      ground.position=vec3(0,-10,0)
      ground.material = craft.material("Materials:Basic")
      ground.material.map = readImage("Surfaces:Desert Cliff Color")
      ground.material.offsetRepeat=vec4(0,0,50,50)
  
      block = scene:entity()
      block.model = craft.model.cube(vec3(4,.5,2))
      block.material = craft.material("Materials:Standard")
      block.material.map = readImage("Blocks:Trunk White Top")
      block.position=vec3(0,0,0)
  
      cam = scene:entity()
      cam.model = craft.model.cube(vec3(.2,.2,.2))
      cam.material = craft.material("Materials:Specular")
      cam.material.map = readImage("Blocks:Brick Grey")
      cam.position=vec3(0,10,6)    
  
      cam.parent=block    -- attach camera to block
      c=cam:add(craft.camera, 120, .1, 1000, false) -- set camera values
      c.entity.eulerAngles=vec3(0,180,0)  -- set camera pointing direction
  end
  
  function update(dt)
      scene:update(dt)
  
      block.eulerAngles = vec3(0,dir,0)
      bx=bx-vel*math.sin(math.rad(dir))   -- calculate x value
      bz=bz-vel*math.cos(math.rad(dir))   -- calculate z value
      block.position=vec3(bx,0,bz)        -- update block x,z position   
  
      c.entity.eulerAngles=vec3(20,180,-Gravity.x*100)  -- camera pointing direction
  end
  
  function draw()
      update(DeltaTime)
      scene:draw()    
      dir=dir-Gravity.x*3
  end
  
• dave1707 Mod

  September 2019 Posts: 8,445

  @brianolive Here's another Craft example. Slide your finger around the screen. You're not really moving the box, but the camera.

  displayMode(FULLSCREEN)
  
  function setup()
      assert(OrbitViewer, "Please include Cameras (not Camera) as a dependency")
      scene = craft.scene()
      scene.camera:add(OrbitViewer, vec3(0,0,0), 100, 0, 500)
      c=scene:entity()
      c.position=vec3(0,0,0)
      c.model = craft.model.cube(vec3(25,10,10))
      c.material = craft.material("Materials:Standard")
      c.material.map = readImage("Blocks:Trunk White Top")
  end
  
  function draw()
      update(DeltaTime)
      scene:draw()    
      text("Drag your finger on the screen to rotate the cube",WIDTH/2,HEIGHT-100)
  end
  
  function update(dt)
      scene:update(dt)
  end
  
• brianolive

  September 2019 Posts: 95

  Thanks @dave1707 , much appreciated!