freecam fly

public void freecamfly()
    {
        motionX = motionY = motionZ = 0.0D;
        double yaw = rotationYaw + 90F;
        boolean focused = mc.inGameHasFocus;
        boolean space = Keyboard.isKeyDown(Keyboard.KEY_SPACE) && focused;
        boolean lcontrol = Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) && focused;
        boolean z = Keyboard.isKeyDown(Keyboard.KEY_Z) && focused;
        boolean q = Keyboard.isKeyDown(Keyboard.KEY_Q) && focused;
        boolean s = Keyboard.isKeyDown(Keyboard.KEY_S) && focused;
        boolean d = Keyboard.isKeyDown(Keyboard.KEY_D) && focused;
        boolean lshift = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) && focused;

        if(lshift){
            motionY -= (lcontrol ? 0.5D : 1.25D);
        }else if(space){
            motionY += (lcontrol ? 0.5D : 1.25D);
        }else if(z){
            if(q) {
                yaw -= 65D;
            }else if(d){
                yaw += 65D;
            }
        }else if(s){
            yaw += 180D;
            if(q){
                yaw += 65D;
            }else if(d){
                yaw -= 65D;
            }
        }else if(q) {
            yaw -= 90D;
        }else if(d) {
            yaw += 90D;
        }

        if(z || q || s || d){
                motionX = Math.cos(Math.toRadians(yaw));
                motionZ = Math.sin(Math.toRadians(yaw));
        }
        if(lcontrol){
            motionX /= 4D;
            motionZ /= 4D;
        }
    }