Refactor(English): Rename all files and identifiers from Dutch to English

Renamed files: constanten→constants, adt-positie→adt-position,
adt-doolhof→adt-maze, adt-sleutel→adt-key, adt-tijdslimiet→adt-timer,
adt-teken→adt-draw, adt-spel→adt-game. All message names, variables,
comments, and tests converted to English.

Also fixed counter location bug (time-label x/y were swapped).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pacman-project/adt-score.rkt

@@ -4,29 +4,29 @@
 ;;                                Score ADT                                  ;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-;; Houdt de score bij. Bevat GEEN grafische code.
+;; Tracks the player's score. Contains NO graphics code.
 
 (define-library (pacman-project adt-score)
   (import (scheme base)
-          (pacman-project constanten))
-  (export maak-score)
+          (pacman-project constants))
+  (export make-score)
 
   (begin
 
-    ;; maak-score :: -> score
-    ;; Maakt een nieuw score-object aan, startend bij 0.
-    (define (maak-score)
-      (let ((punten 0))
+    ;; make-score :: -> score
+    ;; Creates a new score object, starting at 0.
+    (define (make-score)
+      (let ((points 0))
 
-        ;; verhoog! :: -> /
-        ;; Verhoogt de score met het aantal punten per muntje.
-        (define (verhoog!)
-          (set! punten (+ punten punten-per-muntje)))
+        ;; increase! :: -> /
+        ;; Increases the score by points-per-coin.
+        (define (increase!)
+          (set! points (+ points points-per-coin)))
 
         ;; dispatch-score :: symbol -> any
         (define (dispatch-score msg)
-          (cond ((eq? msg 'punten) punten)
-                ((eq? msg 'verhoog!) verhoog!)
-                (else (error "Score ADT -- Onbekend bericht:" msg))))
+          (cond ((eq? msg 'points) points)
+                ((eq? msg 'increase!) increase!)
+                (else (error "Score ADT -- Unknown message:" msg))))
 
         dispatch-score))))