func init()
  lng.decl_priv_var(a1, 'float')
  lng.decl_priv_var(a2, 'float')
  lng.decl_priv_var(px, 'float')
  lng.decl_priv_var(py, 'float')
  lng.decl_priv_var(pz, 'float')
  lng.decl_priv_var(mx, 'int')
  lng.decl_priv_var(my, 'int')
  fvar(old)
  old = block.select(BLK_INIT)
  println(pz + ' = 0.0;')
  block.select(BLK_INC)
  println('#include <math.h>') 
  block.select(old)  
end

func doFly(_data)
  println('glRotated(' + a1 + ', 0.0, sin(-' + a2 + '/180*3.1415), cos(-' + a2 + '/180*3.1415));')
  println('glRotated(' + a2 + ', 1.0, 0.0, 0.0);')
  println('glTranslatef(' + px + ', ' + py + ', ' + pz + ');')
  event(onFly, _data_)
end

func doMouseMove(_data)
  fvar(dx,dy)
  println(mx + ' = width() / 2;')
  println(my + ' = height() / 2;')
  dx = _arr.mt_item(_data, 1)
  dy = _arr.mt_item(_data, 2)
  println(a1 + ' += ' + MouseSensitive + '*(' + mx + ' - ' + dx + ');')
  println(a2 + ' += ' + MouseSensitive + '*(' + my + ' - ' + dy + ');')
  println('QCursor::setPos(mapToGlobal(QPoint(' + mx + ',' + my + ')));')
end

func doKeyPress(_data)
  println('switch(', _data, ') {')
  block.inclvl()
    println('case 87:')
    block.inclvl()
      println(pz + ' += ' + KeySensitive + '*cos(-' + a2 + '/180*3.1415);')
      println(py + ' -= ' + KeySensitive + '*sin(-' + a2 + '/180*3.1415)*cos(' + a1 + '/180*3.1415);')
      println(px + ' -= ' + KeySensitive + '*sin(-' + a2 + '/180*3.1415)*sin(' + a1 + '/180*3.1415);')
      println('break;')
    block.declvl()
    println('case 83:')
    block.inclvl()
      println(pz + ' -= ' + KeySensitive + '*cos(-' + a2 + '/180*3.1415);')
      println(py + ' += ' + KeySensitive + '*sin(-' + a2 + '/180*3.1415)*cos(' + a1 + '/180*3.1415);')
      println(px + ' += ' + KeySensitive + '*sin(-' + a2 + '/180*3.1415)*sin(' + a1 + '/180*3.1415);')
      println('break;')
    block.declvl()
    println('case 65:')
    block.inclvl()
      println(px + ' += ' + KeySensitive + '*cos(' + a1 + '/180*3.1415);')
      println(py + ' -= ' + KeySensitive + '*sin(' + a1 + '/180*3.1415);')
      println('break;')
    block.declvl()
    println('case 68:')
    block.inclvl()
      println(px + ' -= ' + KeySensitive + '*cos(' + a1 + '/180*3.1415);')
      println(py + ' += ' + KeySensitive + '*sin(' + a1 + '/180*3.1415);')
      println('break;')
    block.declvl()
  block.declvl()
  println('}') 
end

func doKeyRelease(_data)
  // TODO
end

func CameraX()
  return('-' + px)
end

func CameraY()
  return('-' + py)
end

func CameraZ()
  return('-' + pz)
end