Move arrange-text to utils module.

2 files changed, 45 insertions, 22 deletions

diff --git a/scenes/game.scm b/scenes/game.scm
index a51fd18..4ae862d 100644
--- a/scenes/game.scm
+++ b/scenes/game.scm
@@ -37,6 +37,7 @@
   #:use-module (characters)
   #:use-module (characters lorenzo)
   #:use-module (characters reaper)
+  #:use-module (utils)
   #:use-module (config)
   #:export (game))
 
@@ -123,28 +124,6 @@ map's object layer."
             #:name 'stats #:object player
             #:position (vec2 10.0 (- %height 10.0))))))
 
-(define* (arrange-text text #:key
-                       (character-width 8.0)
-                       (margin 0.0)
-                       (max-width %width))
-  "Take the string TEXT and split it at spaces so that it fits in the
-given MAX-WIDTH.  Return a list of lines."
-  (match (fold (lambda (chunk acc)
-                 (match acc
-                   ((#:width width #:result (and (current-line . tail) lines))
-                    (let* ((len (+ 1 (string-length chunk)))
-                           (chunk-width (* len character-width))
-                           (new-width (+ chunk-width width)))
-                      (if (< (+ new-width margin) max-width)
-                          `(#:width ,new-width
-                            #:result ,(cons (string-append current-line " " chunk) tail))
-                          `(#:width ,chunk-width
-                            #:result ,(cons chunk lines)))))))
-               '(#:width 0 #:result (""))
-               (string-tokenize text))
-    ((#:width _ #:result lines)
-     (reverse lines))))
-
 (define* (collides? player game #:key (layer "collision"))
   (let* ((pos (position player))
          (offset (origin game))
diff --git a/utils.scm b/utils.scm
new file mode 100644
index 0000000..670a9af
--- /dev/null
+++ b/utils.scm
@@ -0,0 +1,44 @@
+;;; The Inevitable Game
+;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
+;;;
+;;; This program is free software: you can redistribute it and/or
+;;; modify it under the terms of the GNU General Public License as
+;;; published by the Free Software Foundation, either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+(define-module (utils)
+  #:use-module (srfi srfi-1)
+  #:use-module (ice-9 match)
+  #:use-module (config)
+  #:export (arrange-text))
+
+(define* (arrange-text text #:key
+                       (character-width 8.0)
+                       (margin 0.0)
+                       (max-width %width))
+  "Take the string TEXT and split it at spaces so that it fits in the
+given MAX-WIDTH.  Return a list of lines."
+  (match (fold (lambda (chunk acc)
+                 (match acc
+                   ((#:width width #:result (and (current-line . tail) lines))
+                    (let* ((len (+ 1 (string-length chunk)))
+                           (chunk-width (* len character-width))
+                           (new-width (+ chunk-width width)))
+                      (if (< (+ new-width margin) max-width)
+                          `(#:width ,new-width
+                            #:result ,(cons (string-append current-line " " chunk) tail))
+                          `(#:width ,chunk-width
+                            #:result ,(cons chunk lines)))))))
+               '(#:width 0 #:result (""))
+               (string-tokenize text))
+    ((#:width _ #:result lines)
+     (reverse lines))))