Layer of diagonals: indicates which parts of the road correspond to a slope or staircase. RGB values ​​are used to indicate the direction of the diagonal (R), the degree of the slope (G) as well as the appropriate animation of the character (horizontal or vertical) (B). With these three values ​​the optimal way that the Wanderer character should go up and down stairs is calculated both when moving by pathfinding (mouse) and when moving with the keyboard.