Fly
Hello there is some undetected feature but is not complete
If someone know how to be more fast when you press W A S D that will be nice now when you press SPACE player going more Y if you want to move in air forward,backward or sideways is very slow so if some know just type in comment thanks 
Code:
if(GuiIngame.Fly)
{
onGround = true;
motionX = 0.0D;
motionY = 0.0D;
motionZ = 0.0D;
mc.thePlayer.landMovementFactor = 1F;
mc.thePlayer.jumpMovementFactor = 1F;
/*if(Keyboard.isKeyDown(Keyboard.KEY_UP))
{
motionX++;
}else
if(Keyboard.isKeyDown(Keyboard.KEY_DOWN))
{
motionX--;
}*/
if(Keyboard.isKeyDown(Keyboard.KEY_SPACE))
{
motionY++;
}else
if(Keyboard.isKeyDown(Keyboard.KEY_LSHIFT))
{
motionY--;
}
}


(space jumps, levitating (gets kicked off imediately), etc)