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-rw-r--r--shell/data.limg28
1 files changed, 12 insertions, 16 deletions
diff --git a/shell/data.limg b/shell/data.limg
index 23185e3c..ae5c2f4d 100644
--- a/shell/data.limg
+++ b/shell/data.limg
@@ -59,9 +59,8 @@
       (set c (key keyboard))))
   str))])
     (fill_rect . [(def (fill_rect screen x1 y1 x2 y2 color)
-  (while (< y1 y2)
-    (hline1 screen y1 x1 x2 color)
-    (++ y1)))])
+  (for y y1 (< y y2) (++ y)
+    (hline1 screen y x1 x2 color)))])
     (chessboard_row . [(def (chessboard_row screen px y x xmax)
   (while (< x xmax)
     (fill_rect screen
@@ -72,12 +71,10 @@
   (clear screen)
   (let xmax (width screen)
   (let ymax (height screen)
-  (let y 0
-  (while (< y ymax)
+  (for y 0 (< y ymax) (+= y px)
     (chessboard_row screen px y 0 xmax)
     (+= y px)
-    (chessboard_row screen px y px xmax)
-    (+= y px))))))])
+    (chessboard_row screen px y px xmax)))))])
     (circle . [(def (circle screen cx cy r clr)
   (let x (- 0 r)
   (let y 0
@@ -98,11 +95,9 @@
       (+= err
           (+ 1 (* 2 x))))
     (set continue (< x 0))))))))])
-    (ring . [(def (ring screen cx cy r w clr)
-    (let rmax (+ r w)
-    (while (< r rmax)
-      (circle screen cx cy r clr)
-      (++ r))))])
+    (ring . [(def (ring screen cx cy r0 w clr)
+  (for r r0 (< r (+ r0 w)) (++ r)
+    (circle screen cx cy r clr)))])
     (circle_rainbow . [(def (circle_rainbow scr cx cy r w)
   (ring scr cx cy r w 37)
   (+= r w)
@@ -123,12 +118,13 @@
   (ring scr cx cy r w 41)
   (+= r w)
   (ring scr cx cy r w 40))])
-    (bowboard . [(def (bowboard screen side)
+    (bowboard . [(def (bowboard screen r)
   (let xmax (width screen)
   (let ymax (height screen)
-  (for y side (< y ymax) (+= y (* 2 side))
-    (for x side (< x xmax) (+= x (* 2 side))
-      (circle_rainbow screen x y (- side 100) 10))))))])
+  (let side (* 2 r)
+  (for y r (< y ymax) (+= y side)
+    (for x r (< x xmax) (+= x side)
+      (circle_rainbow screen x y (- r 100) 10)))))))])
     (main . [(def (main screen keyboard)
   (circle_rainbow screen 90 90 8 1))])
   ))