Compress maps by _a bunch_!

Look at these gains:
  672K    old-outdoors.tmx.lisp
  264K    new-outdoors.tmx.lisp

Makefile

@@ -5,9 +5,13 @@ USE_SWANK ?= no
 fonts:
 	$(LISP) \
 		--load "res/fonts/flf→lisp.lisp"
+
 maps:
 	$(LISP) \
 		--load "res/maps/tmx→lisp.lisp"
+	sed -i 's%:LANG NIL%%g' res/maps/*.tmx.lisp
+	sed -i 's%^[ ]*%%' res/maps/*.tmx.lisp
+	sed -i 's%) (%)(%g' res/maps/*.tmx.lisp
 
 build: maps fonts
 	$(LISP) \

overworld.lisp

@@ -121,7 +121,8 @@ replays of the game."
   (let ((chunk (world-coords-chunk coords)))
     (member 't (cdr (assoc chunk map-chunks))
             :test (lambda (ignored cell)
-                    (…:plist= (getf cell :coords) coords)))))
+                    (…:plist= (list :x (getf cell :x) :y (getf cell :y))
+                              coords)))))
 
 
 (defun walkable-tile-p (map x y)
@@ -235,6 +236,8 @@ Returns parameters to be used in the next invocation of OVERWORLD-STATE."
 
 
 (defun move-player (map &key (Δx 0) (Δy 0))
+  "Moves the play by the given changes in x & y.
+Very kindly removes a list of parameters to be returned by the overworld state-function."
   (move-entity map '✿:player :Δx Δx :Δy Δy)
   (let* ((coords (getf-entity-data map '✿:player :coords))
          (trigger (trigger-at-coords map (list :x (getf coords :x) :y (getf coords :y)))))
@@ -305,13 +308,13 @@ A core part of OVERWORLD-STATE."
 
 
 (defun matrix-write-cell (matrix cell)
-  "Set a matrice's (2d array's) element corresponding to a “cell”; that is, an
-alist containing a character (:CHAR) and :X & :Y coordinates."
-  (let ((coords (world-coords->screen-coords (getf cell :coords))))
+  "Set a matrice's (2d array's) element corresponding to a “cell”; that is, a
+plist containing a character (:CHAR) and :X & :Y coordinates."
+  (let ((coords (world-coords->screen-coords (list :x (getf cell :x) :y (getf cell :y)))))
     (setf (aref matrix
                 (getf coords :y)
                 (getf coords :x))
-          (getf cell :char))))
+          (getf cell :@))))
 
 
 

overworld.tiled.lisp

@@ -123,9 +123,9 @@ a :FUNCTION to be triggered when it’s stepped upon."
 ;;; ———————————————————————————————————
 (defun tiled-cell->cell (tiled-cell &key (language nil))
   "Convert a Tiled cell into a cell plist."
-  (list :coords (list :x (cl-tiled:cell-column tiled-cell)
-                      :y (cl-tiled:cell-row tiled-cell))
-        :char (tile-character (cl-tiled:cell-tile tiled-cell))
+  (list :x (cl-tiled:cell-column tiled-cell)
+        :y (cl-tiled:cell-row tiled-cell)
+        :@ (tile-character (cl-tiled:cell-tile tiled-cell))
         :lang language))
 
 
@@ -145,7 +145,7 @@ alist of Tiled cell “chunks”."
   (collect-items-into-groups
     (tiled-layer-cells layer)
     (lambda (cell)
-      (world-coords-chunk (getf cell :coords)))
+      (world-coords-chunk (list :x (getf cell :x) :y (getf cell :y))))
     :groups chunks))