ggi.cpp

著名SFC模拟器Snes9x的源代码。

      case 'm':
      case 'e':
      case 's':		byte1 = 64;	break; // X

      case ',':
      case 'r':
      case 'x':		byte2 = 64;	break; // Y

      case 'v':
      case 'q':
      case 'a':		byte1 = 32;	break; // TL

      case 'b':
      case 'w':
      case 'z':		byte1 = 16;	break; // TR

      case GGI_KEY_P4:	byte4 = 1;	break;
      case GGI_KEY_P6:	byte4 = 2;	break;
      case GGI_KEY_P2:	byte4 = 4;	break;
      case GGI_KEY_P8:	byte4 = 8;	break;
	    
      case GGI_KEY_PENTER:	byte4 = 16;	break; // Start
      case GGI_KEY_PPLUS:     byte4 = 32;	break; // Select
      case GGI_KEY_PGUP:	byte3 = 128;	break; // A
      case GGI_KEY_PGDN:	byte4 = 128;	break; // B
      case GGI_KEY_HOME:	byte3 = 64;	break; // X
      case GGI_KEY_END:	        byte4 = 64;	break; // Y
      case GGI_KEY_INSERT:	byte3 = 32;	break; // TL
      case GGI_KEY_DELETE:	byte3 = 16;	break; // TR

      case 27:	S9xExit ();	break;

      case '0':
	if (ev.any.type == evKeyPress)
	  Settings.DisableHDMA = !Settings.DisableHDMA;
	break;
      case '1':
	if (ev.any.type == evKeyPress)
	  PPU.BG_Forced ^= 1;
	break;
      case '2':
	if (ev.any.type == evKeyPress)
	  PPU.BG_Forced ^= 2;
	break;
      case '3':
	if (ev.any.type == evKeyPress)
	  PPU.BG_Forced ^= 4;
	break;
      case '4':
	if (ev.any.type == evKeyPress)
	  PPU.BG_Forced ^= 8;
	break;
      case '5':
	if (ev.any.type == evKeyPress)
	  PPU.BG_Forced ^= 16;
	break;
      case '6':
	if (ev.any.type == evKeyPress)
	  Settings.SwapJoypads = !Settings.SwapJoypads;
	break;
      case '9':
	if (ev.any.type == evKeyPress)
	  if (Settings.SixteenBit)
	    Settings.Transparency = !Settings.Transparency;
	break;
      case '8':
	if (ev.any.type == evKeyPress)
	  Settings.BGLayering = !Settings.BGLayering;
	break;
      case '7':
	if (ev.any.type == evKeyPress)
	  S9xNextController ();
	break;

      case '-':
	if (ev.any.type == evKeyPress) {
	  if (Settings.SkipFrames <= 1)
	    Settings.SkipFrames = AUTO_FRAMERATE;
	  else
	    if (Settings.SkipFrames != AUTO_FRAMERATE)
	      Settings.SkipFrames--;
	}
	break;

      case '=':
      case '+':
	if (ev.any.type == evKeyPress) {
	  if (Settings.SkipFrames == AUTO_FRAMERATE)
	    Settings.SkipFrames = 1;
	  else
	    if (Settings.SkipFrames < 10)
	      Settings.SkipFrames++;
	}
	break;
	
      case GGI_KEY_BACKSPACE:
	if (ev.any.type == evKeyPress) {
	  Settings.DisableGraphicWindows = !Settings.DisableGraphicWindows;
	}
	break;
	//case GGI_KEY_SCROLL_LOCK:
      case GGI_KEY_BREAK:
	if (ev.any.type == evKeyPress)
	  Settings.Paused ^= 1;
	break;
      case GGI_KEY_TAB:
	if (ev.any.type == evKeyPress)
	  superscope_turbo = !superscope_turbo;
	break;

      case GGI_KEY_DGRAVE: /* XK_grave? what's this for key? (alex) */
	superscope_pause = ev.any.type == evKeyPress;
	break;
      case GGI_KEY_F1:
#ifdef DEBUGGER
	if (ev.any.type == evKeyPress && (ev.key.effect & (1<<mkAlt)))	{
	  CPU.Flags |= DEBUG_MODE_FLAG;
	  break;
	}
#endif
	// Fall...
      case GGI_KEY_F2:
	if (ev.any.type == evKeyPress && (ev.key.effect & (1<<mkAlt)))	{
	  S9xLoadSnapshot (S9xChooseFilename (TRUE));
	  break;
	}
	// Fall...
      case GGI_KEY_F3:
	if (ev.any.type == evKeyPress && (ev.key.effect & (1<<mkAlt)))	{
	  Snapshot (S9xChooseFilename (FALSE));
	  break;
	}
	// Fall...
      case GGI_KEY_F4:
      case GGI_KEY_F5:
      case GGI_KEY_F6:
      case GGI_KEY_F7:
      case GGI_KEY_F8:
      case GGI_KEY_F9:
      case GGI_KEY_F10:
      case GGI_KEY_F11:
      case GGI_KEY_F12:
	if (ev.any.type == evKeyPress)	{
	  if (!(ev.key.effect & ((1<<mkShift) | (1<<mkAlt)))) {
	    if (keysym == GGI_KEY_F11) {
	      S9xLoadSnapshot (S9xChooseFilename (TRUE));
	      break;
	    }  else if (keysym == GGI_KEY_F12) {
	      Snapshot (S9xChooseFilename (FALSE));
	      break;
	    }
	    char def [PATH_MAX];
	    char filename [PATH_MAX];
	    char drive [_MAX_DRIVE];
	    char dir [_MAX_DIR];
	    char ext [_MAX_EXT];
	    
	    _splitpath (Memory.ROMFilename, drive, dir, def, ext);
	    sprintf (filename, "%s%s%s.%03d",
		     S9xGetSnapshotDirectory (), SLASH_STR, def,
		     keysym - GGI_KEY_F1);
	    S9xLoadSnapshot (filename);
	  }  else
	    if (ev.key.effect & (1<<mkAlt)) {
	      if (keysym >= GGI_KEY_F4)
		S9xToggleSoundChannel (keysym - GGI_KEY_F4);
	    } else {
	      char def [PATH_MAX];
	      char filename [PATH_MAX];
	      char drive [_MAX_DRIVE];
	      char dir [_MAX_DIR];
	      char ext [_MAX_EXT];
	      
	      _splitpath (Memory.ROMFilename, drive, dir, def, ext);
	      sprintf (filename, "%s%s%s.%03d",
		       S9xGetSnapshotDirectory (), SLASH_STR, def,
		       keysym - GGI_KEY_F1);
	      Snapshot (filename);
	    }
	}
	break;
      }
      if (ev.any.type == evKeyPress) {
	joypads [0] |= byte1;
	joypads [0] |= (byte2 << 8);
	joypads [1] |= byte3;
	joypads [1] |= (byte4 << 8);
      } else {
	joypads [0] &= ~byte1;
	joypads [0] &= ~(byte2 << 8);
	joypads [1] &= ~byte3;
	joypads [1] &= ~(byte4 << 8);
      }
      break;
    case evPtrRelative:
      mouse_x += ev.pmove.x;
      mouse_y += ev.pmove.y;
      break;
    case evPtrAbsolute:
      mouse_x = ev.pmove.x;
      mouse_y = ev.pmove.y;
      break;
    case evPtrButtonPress:
      mouse_buttons |= ev.pbutton.button;
      break;
    case evPtrButtonRelease:
      mouse_buttons &= ~ev.pbutton.button;
      break;
    case evPtrState:
      /* What kind of event do i get here? */
      /* Check it up, should resynchronize if relative ptr maybe.. */
      break;
   default:
      break;
    }
  }  while (ggiEventPoll(vis, emAll, &tv)!=0);
}

void S9xSetPalette ()
{
  int i;
  uint16 Brightness = (IPPU.MaxBrightness) * 140;
  static ggi_color cmap[256];
	    
  for (i = 0; i < 256; i++) {
    cmap[i].r = ((PPU.CGDATA[i] >> 0) & 0x1F) * Brightness;
    cmap[i].g = ((PPU.CGDATA[i] >> 5) & 0x1F) * Brightness;
    cmap[i].b = ((PPU.CGDATA[i] >> 10) & 0x1F) * Brightness;
  }

  ggiSetPaletteVec(vis, 0, 256, cmap);
  
}

const char *S9xSelectFilename (const char *def, const char *dir1,
			    const char *ext1, const char *title)
{
    static char path [PATH_MAX];
    char buffer [PATH_MAX];
    
    printf ("\n%s (default: %s): ", title, def);
    fflush (stdout);
    if (fgets (buffer, sizeof (buffer) - 1, stdin))
    {
	char *p = buffer;
	while (isspace (*p))
	    p++;
	if (!*p)
	{
	    strcpy (buffer, def);
	    p = buffer;
	}

	char *q = strrchr (p, '\n');
	if (q)
	    *q = 0;

	char fname [PATH_MAX];
	char drive [_MAX_DRIVE];
	char dir [_MAX_DIR];
	char ext [_MAX_EXT];

	_splitpath (p, drive, dir, fname, ext);
	_makepath (path, drive, *dir ? dir : dir1, fname, *ext ? ext : ext1);
	return (path);
    }

    return (NULL);
}

void S9xTextMode ()
{
}

void S9xGraphicsMode ()
{
}

void S9xParseDisplayArg (char **, int &, int)
{
    S9xUsage ();
}

void S9xExtraUsage ()
{
}

int S9xMinCommandLineArgs ()
{
    return (2);
}

void S9xMessage (int type, int number, const char *message)
{
    fprintf (stdout, "%s\n", message);
}

static void Convert16to8(int width, int height)
{
  fprintf(stderr, "16 -> 8 bit conversion not implemented yet.\n");
}

static void Convert16to15(int width, int height)
{
  for (register y = 0; y < SNES_HEIGHT_EXTENDED; y++) {
    register uint16 *d = (uint16 *) ((uint8 *)plb->write + y * plb->stride);
    register uint16 *s = (uint16 *) (GFX.Screen + y * GFX.RealPitch);
    
    for (register x = 0; x < SNES_WIDTH; x++) {
      register uint16 pixel = *s++;
      *d++ = (pixel&0x1F) | ((pixel&0xFFC0)>>1);
    }
  }
}

static void Convert16to16(int width, int height)
{
  for (register y = 0; y < SNES_HEIGHT_EXTENDED; y++) {
    register uint16 *d = (uint16 *) ((uint8 *)plb->write + y * plb->stride);
    register uint16 *s = (uint16 *) (GFX.Screen + y * GFX.RealPitch);
    
    for (register x = 0; x < SNES_WIDTH; x++)
      *d++ = *s++;
  }
}

static void Convert16to24(int width, int height)
{
  for (register y = 0; y < SNES_HEIGHT_EXTENDED; y++) {
    register uint8 *d = (uint8 *) ((uint8 *)plb->write + y * plb->stride);
    register uint16 *s = (uint16 *) (GFX.Screen + y * GFX.RealPitch);
    
    for (register x = 0; x < SNES_WIDTH; x++) {
      register uint32 pixel = *s++;
      
      *d++ = (pixel & 0x1f) << 3;
      *d++ = ((pixel >> 5) & 0x3f) << 2;
      *d++ = ((pixel >> 11) & 0x1f) << 3;
    }
  }
}

static void Convert16to32(int width, int height)
{
  for (register y = 0; y < SNES_HEIGHT_EXTENDED; y++) {
    register uint32 *d = (uint32 *) ((uint8 *)plb->write + y * plb->stride);
    register uint16 *s = (uint16 *) (GFX.Screen + y * GFX.RealPitch);
    
    for (register x = 0; x < SNES_WIDTH; x++) {
      register uint32 pixel = *s++;
      
      *d++ = (((pixel & 0x1f) << 3) << 16) |
	((((pixel >> 5) & 0x3f) << 2) << 8) |
	((((pixel >> 11) & 0x1f) << 3) << 0);
    }
  }
}

static void Convert8to8(int width, int height)
{
  for (register y = 0; y < SNES_HEIGHT_EXTENDED; y++) {
    register uint8 *d = (uint8 *) ((uint8 *)plb->write + y * plb->stride);
    register uint8 *s = (uint8 *) (GFX.Screen + y * GFX.RealPitch);
    
    for (register x = 0; x < SNES_WIDTH; x++)
      *d++ = *s++;
  }
}