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-rw-r--r--img/better_disp.lua12
1 files changed, 7 insertions, 5 deletions
diff --git a/img/better_disp.lua b/img/better_disp.lua
index 63eb505..99fa5dd 100644
--- a/img/better_disp.lua
+++ b/img/better_disp.lua
@@ -12,11 +12,13 @@ local function vlorb(onc,offc, g1,g2,g3,g4,g5,g6)
local textc,bgc = onc,offc
if g6 then textc,bgc=bgc,textc end
local vlorbchar = 0x80
- if g1 then vlorbchar=vlorbchar+1 end
- if g2 then vlorbchar=vlorbchar+2 end
- if g3 then vlorbchar=vlorbchar+4 end
- if g4 then vlorbchar=vlorbchar+8 end
- if g5 then vlorbchar=vlorbchar+16 end
+ -- ~= on booleans is xor
+ -- if g6 set then flip all the other bits
+ if g1 ~= g6 then vlorbchar=vlorbchar+1 end
+ if g2 ~= g6 then vlorbchar=vlorbchar+2 end
+ if g3 ~= g6 then vlorbchar=vlorbchar+4 end
+ if g4 ~= g6 then vlorbchar=vlorbchar+8 end
+ if g5 ~= g6 then vlorbchar=vlorbchar+16 end
return textc,bgc,string.char(vlorbchar)
end