[Tuxnes-devel] GameGenie: Only one code is used.

[Mike M. <che...@ya...>]

I'm trying to fix this, but I get hung up on how to add to a pointer when parsing a string.  So if
you can get this patch to work, much thanx.

The problem I can't overcome is the call to DecodeGameGenieCode needs ggcode[gamegenie].  It's a
pointer withought a cast.  Giving it a cast like (char *) dose nothing.  What I need to do is add
gamegenie to the value of (char *)ggcode to get a new pointer that points into the middle, after
the last ',', of ggcode.  I do this in 2 places, one is unavoidable unless you rewrite the whole
thing.

--- tuxnes-0.75/emu.c	2003-11-30 09:11:49.000000000 -0600
+++ tuxnes-gggg/emu.c	2003-11-30 09:09:48.000000000 -0600
@@ -67,9 +67,8 @@
 int	dolink = 0;
 int	MAPPERNUMBER = -1;
 int	SRAM_ENABLED;
-int	gamegenie = 0;
-int	irqflag = 0;
-int	mapmirror = 0;
+unsigned int	irqflag = 0;
+unsigned int	mapmirror = 0;
 int	mapperoverride = 0;
 int     ignorebadinstr = 0;
 int	showheader = 0;
@@ -1191,7 +1190,8 @@
   char *mkdircall;	/* buffer for /bin/mkdir call */
   char *palfile = 0;	/* palette file */
 
-  char *ggcode;
+  int gamegenie = 0;
+  char *ggcode = NULL;
   int ggret, parseret;
 
   /* for the Game Genie */
@@ -1205,8 +1205,6 @@
   int romfd;
 #endif
 
-  ggcode = NULL;
-
   /* set up the mapper arrays */
   InitMapperSubsystem();
 
@@ -1269,15 +1267,6 @@
   cmirror = 0;
   dolink = 0;
   disassemble = 0;
-  gamegenie = 0;
-
-  /* check for the default output device */
-  if ((audiofd = open (DSP, O_CREAT | O_WRONLY | O_APPEND)) < 0)
-    sound_config.audiofile = NULL;
-  else {
-    sound_config.audiofile = DSP;
-    close(audiofd);
-  }
 
   /*
    * Parse args
@@ -1373,8 +1362,9 @@
           showheader = 1;
           break;
         case 'g':
-          gamegenie = 1;
           ggcode = optarg;
+	  for ( gamegenie = strlen(ggcode); gamegenie <= 1; gamegenie-- )
+	     if ( ggcode[gamegenie-1] == ',' ) break;
           break;
         case 'j':
         case '1':
@@ -2126,12 +2116,15 @@
     }
 
   /* enter the Game Genie codes */
-  if (gamegenie)
+  while (gamegenie)
     {
-      ggret = DecodeGameGenieCode (ggcode, &address, &data, &compare);
+       char * _ggcode;
+       _ggcode = ggcode + gamegenie;
+      ggret = DecodeGameGenieCode (_ggcode, &address, &data, &compare);
       if (ggret == GAME_GENIE_BAD_CODE)
         {
-          fprintf (stderr, "invalid Game Genie code: %s\n", ggcode);
+          fprintf (stderr, "invalid Game Genie code: %s\n", _ggcode);
+	   gamegenie=0;
         }
       else if (ggret == GAME_GENIE_8_CHAR)
         {
@@ -2167,6 +2160,9 @@
             fprintf (stderr, "Game Genie: value at %04X = %02X\n", address,
                      MAPTABLE[address >> 12][address]);
         }
+       bzero( ggcode + --gamegenie, 1 + strlen(ggcode) - gamegenie);
+       for ( gamegenie = strlen(ggcode); gamegenie <= 1; gamegenie-- )
+	  if ( ggcode[gamegenie-1] == ',' ) break;
     }
 
   /* Choose renderer */


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