JavaOpenGL Controlls

public void move() {

        if (Keyboard.isKeyDown(Keyboard.KEY_W)) {
            move(-speed, 1);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_S)) {
            move(speed, 1);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_A)) {
            move(-speed, 0);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_D)) {
            move(speed, 0);
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_SPACE)) {
            pos.y += speed;
        }
        if (Keyboard.isKeyDown(Keyboard.KEY_LSHIFT)) {
           pos.y += -speed;
        }
        if ( Keyboard.isKeyDown(Keyboard.KEY_R)) {
            if ( !R_INCREASED) {
                speed *= 4f;
                R_INCREASED = true;
            }
            R_PRESSED = true;
        } else {
            if (R_PRESSED) {
                speed /= 2f;
                R_PRESSED   = false;
                R_INCREASED = false;
            }
        }
        if ( Keyboard.isKeyDown(Keyboard.KEY_E)) {
            pos.x = 0;
            pos.y = 0;
            pos.z = 0;
        }

        rotX += -Mouse.getDY() * turnSpeed;
        rotY +=  Mouse.getDX() * turnSpeed;

    }

    private void move(float amt, int dir) {
        pos.x += amt * (Math.cos(Math.toRadians(rotY + 90 * dir)));
        pos.z += amt * (Math.sin(Math.toRadians(rotY + 90 * dir)));
    }