smb3 and addams family hacks

[fceu.git] / fce.c

diff --git a/fce.c b/fce.c
index e36a86c..5ad965d 100644 (file)
--- a/fce.c
+++ b/fce.c
@@ -48,10 +48,15 @@
 #include       "crc32.h"
 #include        "ppu.h"
 
+#include        "palette.h"
 #include        "movie.h"
 
 #include        "dprintf.h"
 
+#ifdef GP2X
+#include       "drivers/gp2x/asmutils.h"
+#endif
+
 #define Pal     (PALRAM)
 
 
@@ -198,6 +203,9 @@ void FlushGenieRW(void)
    ARead[x+0x8000]=AReadG[x];
    BWrite[x+0x8000]=BWriteG[x];
   }
+#ifdef ASM_6502
+  GenieSetPages(1);
+#endif
   free(AReadG);
   free(BWriteG);
   AReadG=0;
@@ -353,7 +361,7 @@ static DECLFR(A2002)
                         vtoggle=0;
                         PPU_status&=0x7F;
                         PPUGenLatch=ret;
-                       dprintf("r [2002] %02x",ret);
+                       //dprintf("r [2002] %02x",ret);
                         return ret;
 }
 
@@ -554,7 +562,6 @@ void BGRender(uint8 *target)
 }
 
 #ifdef FRAMESKIP
-int FSkip_setting=-1; // auto
 int FSkip=0;
 void FCEUI_FrameSkip(int x)
 {
@@ -609,17 +616,24 @@ static void Loop6502(void)
           for(x=63;x>=0;x--)
            ((uint32 *)target)[x]=((uint32*)target)[x]&0xF0F0F0F0;
          }
+#ifdef GP2X
+          if((PPU[1]>>5)==0x7) block_or(target, 256, 0xc0);
+          else if(PPU[1]&0xE0) block_andor(target, 256, 0x3f, 0x40);
+          else                 block_andor(target, 256, 0x3f, 0x80);
+#else
           if((PPU[1]>>5)==0x7)
            for(x=63;x>=0;x--)
-            ((uint32 *)target)[x]=(((uint32*)target)[x]&0x3f3f3f3f)|0x40404040;
+            ((uint32 *)target)[x]=(((uint32*)target)[x])|0xc0c0c0c0;
           else if(PPU[1]&0xE0)
            for(x=63;x>=0;x--)
-            ((uint32 *)target)[x]=((uint32*)target)[x]|0xC0C0C0C0;
+            ((uint32 *)target)[x]=(((uint32*)target)[x]&0x3f3f3f3f)|0x40404040;
           else
             for(x=63;x>=0;x--)
-             ((uint32 *)target)[x]=((uint32*)target)[x]&0x3f3f3f3f;
-         FCEU_dwmemset(target-  8,0x3f3f3f3f,8);
-         FCEU_dwmemset(target+256,0x3f3f3f3f,8);
+             ((uint32 *)target)[x]=(((uint32*)target)[x]&0x3f3f3f3f)|0x80808080;
+#endif
+         // black borders
+         ((uint32 *)target)[-2]=((uint32 *)target)[-1]=0;
+         ((uint32 *)target)[64]=((uint32 *)target)[65]=0;
         #ifdef FRAMESKIP
         }
         #endif
@@ -959,13 +973,13 @@ static void DoHBlank(void)
 {
  if(ScreenON || SpriteON)
   FetchSpriteData();
- if(GameHBIRQHook && (ScreenON || SpriteON))
+ if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
  {
   X6502_Run(6);
   Fixit2();
-  X6502_Run(4);
+  X6502_Run(4+3);      // original value was 4, but adding 3 fixes glitch in smb3 (and breaks something?)
   GameHBIRQHook();
-  X6502_Run(85-16-10);
+  X6502_Run(85-10-16-3);
  }
  else
  {
@@ -978,7 +992,8 @@ static void DoHBlank(void)
  //PPU_hook(0,-1);
  //fprintf(stderr,"%3d: $%04x\n",scanline,RefreshAddr);
  scanline++;
- ResetRL();
+ if (scanline<240)
+  ResetRL();
  X6502_Run(16);
 }
 
@@ -1031,7 +1046,7 @@ void CloseGame(void)
  if(GameLoaded)
  {
   if(FCEUGameInfo.type!=GIT_NSF)
-   FlushGameCheats();
+   FCEU_FlushGameCheats(0,0);
   #ifdef NETWORK
   if(FSettings.NetworkPlay) KillNetplay();
   #endif
@@ -1065,6 +1080,7 @@ void ResetGameLoaded(void)
 }
 
 char lastLoadedGameName [2048];
+int LoadGameLastError = 0;
 int UNIFLoad(const char *name, int fp);
 int iNESLoad(const char *name, int fp);
 int FDSLoad(const char *name, int fp);
@@ -1076,7 +1092,8 @@ FCEUGI *FCEUI_LoadGame(char *name)
        int have_movie = 0;
         int fp;
 
-        Exit=1;
+        //Exit=1;
+       LoadGameLastError = 0;
         ResetGameLoaded();
 
        strncpy(name2, name, sizeof(name2));
@@ -1086,6 +1103,7 @@ FCEUGI *FCEUI_LoadGame(char *name)
        if(!fp)
         {
         FCEU_PrintError("Error opening \"%s\"!",name);
+        LoadGameLastError = 1;
         return 0;
        }
 
@@ -1098,16 +1116,17 @@ FCEUGI *FCEUI_LoadGame(char *name)
          FCEU_fclose(fp);
          *p = 0;
          fp=FCEU_fopen(name2,"rb");
+         if (!fp && p - name2 > 2)  p[-2] = 0;
+         fp=FCEU_fopen(name2,"rb");
          if (!fp) {
           printf("no ROM for movie\n");
+          LoadGameLastError = 2;
           return 0;
          }
          have_movie = 1;
         }
        }
 
-       strcpy(lastLoadedGameName, name2);
-
         GetFileBase(name2);
         if(iNESLoad(name2,fp))
          goto endlseq;
@@ -1120,6 +1139,8 @@ FCEUGI *FCEUI_LoadGame(char *name)
 
         FCEU_PrintError("An error occurred while loading the file.");
         FCEU_fclose(fp);
+       // format handlers may set LoadGameLastError themselves.
+       if (LoadGameLastError == 0) LoadGameLastError = 3;
         return 0;
 
         endlseq:
@@ -1138,8 +1159,8 @@ FCEUGI *FCEUI_LoadGame(char *name)
         SaveStateRefresh();
         if(FCEUGameInfo.type!=GIT_NSF)
         {
-         LoadGamePalette();
-         LoadGameCheats();
+        FCEU_LoadGamePalette();
+         FCEU_LoadGameCheats(0);
         }
 
        FCEU_ResetPalette();
@@ -1147,6 +1168,9 @@ FCEUGI *FCEUI_LoadGame(char *name)
 
        if (have_movie)
                FCEUI_LoadMovie(name, 1);
+
+       strcpy(lastLoadedGameName, name2);
+
         return(&FCEUGameInfo);
 }
 
@@ -1174,7 +1198,7 @@ void FCEU_ResetVidSys(void)
   FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
   FSettings.LastSLine=FSettings.UsrLastSLine[0];
  }
- printf("PAL = %i\n", PAL);
+ printf("ResetVidSys: PAL = %i\n", PAL);
  SetSoundVariables();
 }
 
@@ -1186,22 +1210,28 @@ int FCEUI_Initialize(void)
        FSettings.UsrFirstSLine[0]=8;
        FSettings.UsrFirstSLine[1]=0;
         FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
-       FSettings.SoundVolume=65535;    // 100%
+       FSettings.SoundVolume=100;
         return 1;
 }
 
+void MMC5_hb(int);     /* Ugh ugh ugh. */
 static INLINE void Thingo(void)
 {
    Loop6502();
 
-   // check: Battletoads & Double Dragon
+   if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
+
+   // check: Battletoads & Double Dragon, Addams Family
+   // sky glitches in SMB1 if done wrong
    if(tosprite>=256)
    {
     X6502_Run(256);
    }
    else
    {
-     // sky glitches in SMB1 if done wrong
+     // a dirty hack for Addams Family and inaccurate sprite hit emulation
+     if(tosprite<8) tosprite-=tosprite*3>>2;
+
      X6502_Run(tosprite);
      PPU[2]|=0x40;
      X6502_Run(256-tosprite);
@@ -1215,21 +1245,20 @@ void EmLoop(void)
 {
  for(;;)
  {
+  int x;
   uint32 scanlines_per_frame = PAL ? 312 : 262;
   UpdateInput();
-  ApplyPeriodicCheats();
+  FCEU_ApplyPeriodicCheats();
 
   // FCEUPPU_Loop:
   if(ppudead) /* Needed for Knight Rider, possibly others. */
   {
-   memset(XBuf, 0x80, 256*240);
+   //memset(XBuf, 0, 320*240);
    X6502_Run(scanlines_per_frame*(256+85));
    ppudead--;
    goto update;
   }
-       //extern int asdc;
-       //printf("asdc: %i\n", asdc);
-       //asdc=0;
+
   X6502_Run(256+85);
 
   PPU[2]|=0x80;
@@ -1242,7 +1271,7 @@ void EmLoop(void)
                                   of this delay.
                                */
   if(FCEUGameInfo.type==GIT_NSF)
-   TriggerNMINSF();
+   DoNSFFrame();
   else if(VBlankON)
    TriggerNMI();
 
@@ -1255,15 +1284,16 @@ void EmLoop(void)
      X6502_Run(256+85);
   }
   // X6502_Run((scanlines_per_frame-242)*(256+85)-12);
-
   PPU_status&=0x1f;
-
   X6502_Run(256);
+
   {
    if(ScreenON || SpriteON)
    {
     if(GameHBIRQHook)
      GameHBIRQHook();
+     if(PPU_hook)
+      for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} // ugh
     if(GameHBIRQHook2)
      GameHBIRQHook2();
    }
@@ -1283,7 +1313,9 @@ void EmLoop(void)
 
   if(FCEUGameInfo.type==GIT_NSF)
   {
-   X6502_Run((256+85)*240);
+   // run scanlines for asm core to fuction
+   for(scanline=0;scanline<240;scanline++)
+    X6502_Run(256+85);
   }
   else
   {
@@ -1296,6 +1328,7 @@ void EmLoop(void)
     deempcnt[deemp]++;
     Thingo();
    }
+   if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
    for(x=1,max=0,maxref=0;x<7;x++)
    {
     if(deempcnt[x]>max)
@@ -1305,8 +1338,6 @@ void EmLoop(void)
     }
     deempcnt[x]=0;
    }
-   //FCEU_DispMessage("%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x %d",deempcnt[0],deempcnt[1],deempcnt[2],deempcnt[3],deempcnt[4],deempcnt[5],deempcnt[6],deempcnt[7],maxref);
-   //memset(deempcnt,0,sizeof(deempcnt));
    SetNESDeemph(maxref,0);
   }
 
@@ -1336,7 +1367,7 @@ update:
 
   if(Exit)
   {
-   CloseGame();
+   //CloseGame();
    break;
   }
 
@@ -1401,13 +1432,25 @@ static void PowerPPU(void)
 
 void ResetNES(void)
 {
-        if(!GameLoaded || (FCEUGameInfo.type==GIT_NSF)) return;
+        if(!GameLoaded) return;
         GameInterface(GI_RESETM2);
         ResetSound();
         ResetPPU();
         X6502_Reset();
 }
 
+static void FCEU_MemoryRand(uint8 *ptr, uint32 size)
+{
+ int x=0;
+ while(size)
+ {
+  *ptr=(x&4)?0xFF:0x00;
+  x++;
+  size--;
+  ptr++;
+ }
+}
+
 void PowerNES(void)
 {
         if(!GameLoaded) return;
@@ -1417,12 +1460,20 @@ void PowerNES(void)
 
         GeniePower();
 
+#ifndef DEBUG_ASM_6502
+        FCEU_MemoryRand(RAM,0x800);
+#else
         memset(RAM,0x00,0x800);
+#endif
         ResetMapping();
        GameInterface(GI_POWER);
         PowerSound();
        PowerPPU();
        timestampbase=0;
+#ifdef ASM_6502
+       if (geniestage)
+        GenieSetPages(0);
+#endif
        X6502_Power();
 }