NPC Code:
horsescount the horses count
horses[index].x an horses's horizontal position
horses[index].y an horses's vertical position
horses[index].dir the direction of the horse
horses[index].bushes bushes eaten by the horse
horses[index].bombs bombs count in the horse's mouth
horses[index].bombpower the power of the bombs on the horse's mouth
horses[index].type the horse type (0 -> riding horse, 1 - boat)