maze-bot-langage

[CONSTANT]

# PATH, NEIGHBOURS list are given by the maze bot

COLOR BLACK;WHITE;BROWN;GREEN;RED;BLUE
WAY BLOCKED;FREE

[MAIN]
COMPUTE_NEXT_MOVE
UPDATE_PATH
COLORING
MOVE NEXT_MOVE 

[UPDATE_PATH] 

IF WAY MATCH FREE THEN
    PUT PATH NEXT_MOVE
ELSE
    DEL PATH LAST-ITEM

[COMPUTE_NEXT_MOVE] 
    
    IF RED IN NEIGHBOURS THEN
       SET NEXT_MOVE RED FROM NEIGHBOURS
       SET WAY FREE
    ELSIF BLACK IN NEIGHBOURS THEN
       SET NEXT_MOVE ONE-OF BLACK FROM NEIGHBOURS
       SET WAY FREE
    ELSE
       SET NEXT_MOVE REVERT LAST_MOVE  
       SET WAY BLOCKED
    ENDIF
    
[COLORING]
    
    IF NEXT_MOVE MATCH BLACK THEN
        IF WAY MATCH BLOCKED THEN
            PAINTING BLUE    
        ELSE:
            PAINTING BROWN
        ENDIF
    IF NEXT_MOVE MATCH BROWN THEN
        IF WAY MATCH BLOCKED
            PAINTING BLUE
    ENDIF