function update()
    ballx, bally, ballz = ball:getPosition()
    ag.setCamera(7, -6, 15, ballx, bally, ballz, 0, 0, 1)
    ag.doPhysics()
    ag.startFrame()
    ag.drawObjects()
    ag.endFrame()
end

--ag.setCamera(8, -8, 15, -8, 8, 4, 0, 0, 1)
arena = ag.loadStaticModel("boxarena")
ball = ag.loadModel("ball")
ball:setPosition(-7, 7.4, 12)
ball2 = ball:clone()
ball2:setPosition(-7, 7.4, 14)
ball3 = ball:clone()
ball3:setPosition(-7, 7.4, 16)
logo = ag.loadModel("dwlogo")
logo:setPosition(0, 2, 11)