Tool to find duplicate tiles

Tool to find duplicate tiles
by DRW on 2015-12-10 (#160461)

Is there a program that takes the .chr file of an NES project and tells you where you have duplicate tiles?

Re: Tool to find duplicate tiles
by Kasumi on 2015-12-10 (#160466)

NES Screen Tool will do this.

https://shiru.untergrund.net/software.shtml

Re: Tool to find duplicate tiles
by ccovell on 2015-12-10 (#160481)

It's a bit ancient now, but you can always re-compile the C source to my program: http://www.chrismcovell.com/charlie.html

Re: Tool to find duplicate tiles
by tepples on 2015-12-11 (#160497)

DRW wrote:

Is there a program that takes the .chr file of an NES project and tells you where you have duplicate tiles?

I wrote an NES program that can do that.

Re: Tool to find duplicate tiles
by DRW on 2015-12-12 (#160556)

Thanks for your help.

ccovell's tool is the one that works best for me. (Since I have Windows XP, I didn't even need to recompile the file.)

With shiru's tool, I didn't find a way to list all duplicates at once. I only found the version where I click one tile and it shows me the duplicates of this one tile.

tepples wrote:

I wrote an NES program that can do that.

If it's an NES program, how am I supposed to use an existing CHR file for a check?

Re: Tool to find duplicate tiles
by rainwarrior on 2015-12-13 (#160590)

It would be a very simple tool to write for yourself:

Code:

for (int t=0; t<256; ++t) // iterate over 256 16-byte tiles
{
   for (int u=0; u<t; ++u) // check every tile before this one
   {
      bool duplicate = true;
      for (int b=0; b<16; ++b)
      {
         if (chr[(t*16)+b] != chr[(u*16)+b])
         {
            duplicate = false;
            break;
         }
      }
      if (duplicate)
      {
         printf("Tile %02X duplicates tile %02X\n",t,u);
         break;
      }
   }
}