EntityPlayerSP.java:


if(GuiIngame.fly || GuiIngame.noClip)
  {
    onGround = false;
    motionX = 0.0D;
    motionY = 0.0D;
    motionZ = 0.0D;
    if(Keyboard.isKeyDown(57) && mc.inGameHasFocus)
    {
    motionY++;
    } else
    if(Keyboard.isKeyDown(29) && mc.inGameHasFocus)
    {
    motionY--;
    }
    double d5 = rotationPitch + 90F;
    double d7 = rotationYaw + 90F;
    boolean flag4 = Keyboard.isKeyDown(17) && mc.inGameHasFocus;
    boolean flag6 = Keyboard.isKeyDown(31) && mc.inGameHasFocus;
    boolean flag8 = Keyboard.isKeyDown(30) && mc.inGameHasFocus;
    boolean flag10 = Keyboard.isKeyDown(32) && mc.inGameHasFocus;
    if(flag4)
    {
    if(flag8)
    {
    d7 -= 45D;
    } else
    if(flag10)
    {
    d7 += 45D;
    }
    } else
    if(flag6)
    {
    d7 += 180D;
    if(flag8)
    {
    d7 += 45D;
    } else
    if(flag10)
    {
    d7 -= 45D;
    }
    } else
    if(flag8)
    {
    d7 -= 90D;
    } else
    if(flag10)
    {
    d7 += 90D;
    }
    if(flag4 || flag8 || flag6 || flag10)
    {
    motionX = Math.cos(Math.toRadians(d7));
    motionZ = Math.sin(Math.toRadians(d7));
    }
  }
  return false;