use luajit compatible bit ops

1 files changed, 9 insertions, 4 deletions

diff --git a/ui.lua b/ui.lua
index 81f453c..8ad64e6 100644
--- a/ui.lua
+++ b/ui.lua
@@ -1,4 +1,9 @@
-local bit32 = require("bit32")
+local ok, bit = pcall(require, "bit")
+if not ok then
+    ok, bit = pcall(require, "bit32")
+    if not ok then error("no bit library") end
+end
+
 local utf8 = require("utf8")
 local distribute = require("distribute")
 
@@ -255,9 +260,9 @@ end
 
 local function color(hex)
     return { love.math.colorFromBytes(
-        bit32.band(bit32.rshift(hex, 16), 0xff),
-        bit32.band(bit32.rshift(hex,  8), 0xff),
-        bit32.band(bit32.rshift(hex,  0), 0xff)
+        bit.band(bit.rshift(hex, 16), 0xff),
+        bit.band(bit.rshift(hex,  8), 0xff),
+        bit.band(bit.rshift(hex,  0), 0xff)
     ) }
 end