Encode height/width in constants

diff --git a/source/main.lua b/source/main.lua
index 913d60c..aefc258 100644 (file)
--- a/source/main.lua
+++ b/source/main.lua
@@ -1,10 +1,13 @@
 local pd <const> = playdate
 local gfx <const> = playdate.graphics
 
+local WIDTH <const> = 10
+local HEIGHT <const> = 10
+
 local rects = {}
-for i=1, 10 do
+for i=1, WIDTH do
     rects[i] = {}
-      for j=1, 10 do
+      for j=1, HEIGHT do
           r = pd.geometry.rect.new(32 * (i-1), 32 * (j-1), 32, 32)
           rects[i][j] = { rect = r }
       end
@@ -24,12 +27,12 @@ function playdate.update()
     gfx.fillRect(rects[x][y].rect)
 
     if playdate.buttonJustPressed("right") then
-        x = math.min(10, x + 1)
+        x = math.min(WIDTH, x + 1)
     elseif playdate.buttonJustPressed("left") then
         x = math.max(1, x - 1)
     elseif playdate.buttonJustPressed("up") then
         y = math.max(1, y - 1)
     elseif playdate.buttonJustPressed("down") then
-        y = math.min(10, y + 1)
+        y = math.min(HEIGHT, y + 1)
     end
 end