if (key == 'w') {
		if(rotation == 0) {
			xPosition += 2*roomsize;
		}
		else if(rotation == 90 || rotation == -90) {
			yPosition += 2*roomsize;
		}
		else if(rotation == 180 || rotation == -180) {
			xPosition -= 2*roomsize;
		}
		else {
			yPosition -= 2*roomsize;
		}
    	glutPostRedisplay(); 
	}
	if (key == 's') {
		if(rotation == 0) {
			xPosition -= 2*roomsize;
		}
		else if(rotation == 90 || rotation == -90) {
			yPosition -= 2*roomsize;
		}
		else if(rotation == 180 || rotation == -180) {
			xPosition += 2*roomsize;
		}
		else {
			yPosition += 2*roomsize;
		}
		glutPostRedisplay();
	}