public Wall(float xPos, float yPos) {
setPosition(xPos, yPos);
p = new Paint();
p.setColor(Color.WHITE);
super.setShape(THICKNESS, WIDTH);
}
public void draw(Canvas cnv) {
super.draw(cnv);
cnv.drawRect(getX(), getY(), getX() + THICKNESS, getY() + WIDTH, p);
}