- -- Tile graphic test 
-   
-   
- function main () 
-  if mappy.msgBox ("Graphic test", "This is a test LUA script which generates a new block and graphic and shades it. In 8bit, the palette is set to greyscale. This script has no useful function and is provided so it can be modified for a purpose (see the text file luascr\\Tile graphic test.lua).\n\nRun the script?", mappy.MMB_OKCANCEL, mappy.MMB_ICONQUESTION) == mappy.MMB_OK then 
-   
-   local w = mappy.getValue(mappy.BLOCKWIDTH) 
-   local h = mappy.getValue(mappy.BLOCKHEIGHT) 
-   local depth = mappy.getValue(mappy.BLOCKDEPTH) 
-   
-   if (w == 0) then 
-    mappy.msgBox ("Graphic test", "You need to load or create a map first", mappy.MMB_OK, mappy.MMB_ICONINFO) 
-   else 
-   
-    local p = 0 
-    local a,r,g,b 
-    while p < 256 do 
- -- a,r,g,b = mappy.getValue((mappy.PALETTEARGB)+p) 
- -- io.write("old index #",p," = ",a,",",r,",",g,",",b,"\n") 
-     a = 255 
-     r = p 
-     g = p 
-     b = p 
- -- io.write("rgb=",r,g,b,"\n") 
-     mappy.setValue((mappy.PALETTEARGB)+p, a, r, g, b) 
-     p = p + 1 
-    end 
-   
-    local newblock = mappy.createBlock (1) 
-    local newgraphic = mappy.createGraphic (1) 
-    mappy.setBlockValue (newblock, mappy.BLKBG, newgraphic); 
-    mappy.setBlockValue (newblock, mappy.BLKUSER1, 123); 
-    mappy.setBlockValue (newblock, mappy.BLKFLAG1, 1); 
-    local y = 0 
-    while y < h do 
-     local x = 0 
-     while x < w do 
-      local pval = (x*(128/w))+(y*(128/h)) 
-      if depth == 8 then 
-       mappy.setPixel (x, y, newgraphic, pval); 
-      else 
-       mappy.setPixel (x, y, newgraphic, 255, pval, pval, pval); 
-      end 
-      x = x + 1 
-     end 
-     y = y + 1 
-    end 
-    mappy.updateScreen() 
-   end 
-  end 
- end 
-   
- test, errormsg = pcall( main ) 
- if not test then 
-     mappy.msgBox("Error ...", errormsg, mappy.MMB_OK, mappy.MMB_ICONEXCLAMATION) 
- end 
-