#lang r7rs

; Maze ADT ;


(define-library (pacman-project maze)
  (import (scheme base)
          (pp1 graphics)
          (pacman-project screen))

  (export maze-rows
          maze-cols
          cell-size
          maze-offset-y
          cell-ref
          cell-set!
          cell-wall?
          cell-coin?
          cell-empty?
          cell-key?
          cell-door?
          draw-maze!
          remove-door!)

  (begin

    ;conmstanten
    (define cell-size 24)
    (define maze-offset-y 97)  ;offsets om de maze mooi te kunnen plaatsen 
    (define maze-size-offset 6)

    ;we maken een maze aan van 31 rijen x 28 kolommen
    ;vector ipv #() omda vector mutable is en #() ni.

    ;0 = muntje 
    ;1 = muur   
    ;2 = leeg   
    ;3 = sleutel 
    ;4 = deur   
    (define maze
      (vector (vector 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1)
              (vector 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1)
              (vector 1 0 1 1 1 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1)
              (vector 1 0 1 0 0 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1)
              (vector 1 0 1 4 1 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1)
              (vector 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1)
              (vector 1 0 1 1 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 0 1)
              (vector 1 0 1 1 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 0 1)
              (vector 1 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 0 1)
              (vector 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1)
              (vector 2 2 2 2 2 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 2 2 2 2 2)
              (vector 2 2 2 2 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 1 2 2 2 2 2)
              (vector 2 2 2 2 2 1 0 1 1 0 1 1 1 4 4 1 1 1 0 1 1 0 1 2 2 2 2 2)
              (vector 1 1 1 1 1 1 0 1 1 0 1 2 2 2 2 2 2 1 0 1 1 0 1 1 1 1 1 1)
              (vector 2 0 0 0 0 0 0 0 0 0 1 2 2 2 2 2 2 1 0 0 0 0 0 0 0 0 0 2)
              (vector 1 1 1 1 1 1 0 1 1 0 1 2 2 2 2 2 2 1 0 1 1 0 1 1 1 1 1 1)
              (vector 2 2 2 2 2 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 2 2 2 2 2)
              (vector 2 2 2 2 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 1 2 2 2 2 2)
              (vector 2 2 2 2 2 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 2 2 2 2 2)
              (vector 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 1)
              (vector 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1)
              (vector 1 0 1 1 1 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1)
              (vector 1 0 1 1 1 1 0 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 1 1 1 1 0 1)
              (vector 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1)
              (vector 1 1 1 0 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 1 0 1 1 1)
              (vector 1 1 1 0 1 1 0 1 1 0 1 1 1 1 1 1 1 1 0 1 1 0 1 1 0 1 1 1)
              (vector 1 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 4 1 0 0 0 0 0 0 1)
              (vector 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 0 0 1 1 1 1 1 0 1)
              (vector 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1)
              (vector 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1)
              (vector 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1)))

    (define maze-rows (vector-length maze))
    (define maze-cols (vector-length (vector-ref maze 0)))


    ;geeft waarde terug v/e cell
    (define (cell-ref row col)
      (vector-ref (vector-ref maze row) col))

    ;past waarde aan v/e cell
    (define (cell-set! row col value)
      (vector-set! (vector-ref maze row) col value))

    (define (cell-wall? row col)
      (= (cell-ref row col) 1))

    (define (cell-coin? row col)
      (= (cell-ref row col) 0))

    (define (cell-empty? row col)
      (= (cell-ref row col) 2))

    (define (cell-key? row col)
      (= (cell-ref row col) 3))

    (define (cell-door? row col)
      (= (cell-ref row col) 4))


    (define maze-layer (make-new-layer!))
    (define maze-tile (make-tile screen-width screen-height))
    ((maze-layer 'add-drawable!) maze-tile)

    ;tekent de maze
    (define (draw-maze!)
      (do ((row 0 (+ row 1)))
        ((= row maze-rows))
        (do ((col 0 (+ col 1)))
          ((= col maze-cols))
          (let ((cell (cell-ref row col)))
            (cond
              ((= cell 1)
               ((maze-tile 'draw-rectangle!) (* col cell-size) (+ (* row cell-size) maze-offset-y) (- cell-size maze-size-offset) (- cell-size maze-size-offset) "blue"))
              ((= cell 4)
               ((maze-tile 'draw-rectangle!) (* col cell-size) (+ (* row cell-size) maze-offset-y) (- cell-size maze-size-offset) (- cell-size maze-size-offset) "pink"))))))) ;we tekenen hier ook de deuren aangezien ze deel uitmaken van de maze

    (draw-maze!)

    ;verwijdert een deur uit de maze 
    (define (remove-door! row col)
      (cell-set! row col 2)
      ((maze-tile 'draw-rectangle!)
       (* col cell-size)
       (+ (* row cell-size) maze-offset-y)
       (- cell-size maze-size-offset)
       (- cell-size maze-size-offset)
       "black"))))