Mercurial > vba-linux

     1 #include <cstdlib>

     2 #include <cstring>

     3 

     4 #include "../common/System.h"

     5 #include "../common/Util.h"

     6 #include "GB.h"

     7 #include "gbGlobals.h"

     8 #include "../common/movie.h"

     9 

    10 extern u8 * pix;

    11 

    12 #define GBSGB_NONE            0

    13 #define GBSGB_RESET           1

    14 #define GBSGB_PACKET_TRANSMIT 2

    15 

    16 u8 gbSgbBorderChar [32 * 256];

    17 u8 gbSgbBorder [2048];

    18 

    19 int32 gbSgbCGBSupport	   = 0;

    20 int32 gbSgbMask			   = 0;

    21 int32 gbSgbMode			   = 0;

    22 int32 gbSgbPacketState	   = GBSGB_NONE;

    23 int32 gbSgbBit			   = 0;

    24 int32 gbSgbPacketTimeout   = 0;

    25 int32 GBSGB_PACKET_TIMEOUT = 66666;

    26 u8	  gbSgbPacket[16 * 7];

    27 int32 gbSgbPacketNBits		 = 0;

    28 int32 gbSgbPacketByte		 = 0;

    29 int32 gbSgbPacketNumber		 = 0;

    30 int32 gbSgbMultiplayer		 = 0;

    31 int32 gbSgbFourPlayers		 = 0;

    32 u8	  gbSgbNextController	 = 0x0f;

    33 u8	  gbSgbReadingController = 0;

    34 u16	  gbSgbSCPPalette[4 * 512];

    35 u8	  gbSgbATF[20 * 18];

    36 u8	  gbSgbATFList[45 * 20 * 18];

    37 u8	  gbSgbScreenBuffer[4160];

    38 

    39 inline void gbSgbDraw24Bit(u8 *p, u16 v)

    40 {

    41 	*((u32 *) p) = systemColorMap32[v];

    42 }

    43 

    44 inline void gbSgbDraw32Bit(u32 *p, u16 v)

    45 {

    46 	*p = systemColorMap32[v];

    47 }

    48 

    49 inline void gbSgbDraw16Bit(u16 *p, u16 v)

    50 {

    51 	*p = systemColorMap16[v];

    52 }

    53 

    54 void gbSgbReset()

    55 {

    56 	gbSgbPacketTimeout = 0;

    57 	gbSgbCGBSupport	   = 0;

    58 	gbSgbMask			   = 0;

    59 	gbSgbPacketState	   = GBSGB_NONE;

    60 	gbSgbBit			   = 0;

    61 	gbSgbPacketNBits	   = 0;

    62 	gbSgbPacketNumber	   = 0;

    63 	gbSgbMultiplayer	   = 0;

    64 	gbSgbFourPlayers	   = 0;

    65 	gbSgbNextController	   = 0x0f;

    66 	gbSgbReadingController = 0;

    67 

    68 	memset(gbSgbSCPPalette, 0, 512 * 4);

    69 	memset(gbSgbATF, 0, 20 * 18);

    70 	memset(gbSgbATFList, 0, 45 * 20 * 18);

    71 	memset(gbSgbPacket, 0, 16 * 7);

    72 	memset(gbSgbBorderChar, 0, 32 * 256);

    73 	memset(gbSgbBorder, 0, 2048);

    74 

    75 	int i;

    76 	for (i = 1; i < 2048; i += 2)

    77 	{

    78 		gbSgbBorder[i] = 1 << 2;

    79 	}

    80 

    81 	for (i = 0; i < 4; i++)

    82 	{

    83 		gbPalette[i * 4]	 = (0x1f) | (0x1f << 5) | (0x1f << 10);

    84 		gbPalette[i * 4 + 1] = (0x15) | (0x15 << 5) | (0x15 << 10);

    85 		gbPalette[i * 4 + 2] = (0x0c) | (0x0c << 5) | (0x0c << 10);

    86 		gbPalette[i * 4 + 3] = 0;

    87 	}

    88 }

    89 

    90 void gbSgbInit()

    91 {

    92 	gbSgbReset();

    93 }

    94 

    95 void gbSgbShutdown()

    96 {

    97 	memset(gbSgbBorderChar, 0, 32 * 256);

    98 	memset(gbSgbBorder, 0, 2048);

    99 }

   100 

   101 void gbSgbFillScreen(u16 color)

   102 {

   103 	switch (systemColorDepth)

   104 	{

   105 	case 16:

   106 	{

   107 		for (int y = 0; y < 144; y++)

   108 		{

   109 			int yLine = (y + gbBorderRowSkip + 1) * (gbBorderLineSkip + 2) +

   110 			            gbBorderColumnSkip;

   111 			u16 *dest = (u16 *)pix + yLine;

   112 			for (register int x = 0; x < 160; x++)

   113 				gbSgbDraw16Bit(dest++, color);

   114 		}

   115 	}

   116 	break;

   117 	case 24:

   118 	{

   119 		for (int y = 0; y < 144; y++)

   120 		{

   121 			int yLine = (y + gbBorderRowSkip) * gbBorderLineSkip + gbBorderColumnSkip;

   122 			u8 *dest  = (u8 *)pix + yLine * 3;

   123 			for (register int x = 0; x < 160; x++)

   124 			{

   125 				gbSgbDraw24Bit(dest, color);

   126 				dest += 3;

   127 			}

   128 		}

   129 	}

   130 	break;

   131 	case 32:

   132 	{

   133 		for (int y = 0; y < 144; y++)

   134 		{

   135 			int	 yLine = (y + gbBorderRowSkip + 1) * (gbBorderLineSkip + 1) + gbBorderColumnSkip;

   136 			u32 *dest  = (u32 *)pix + yLine;

   137 			for (register int x = 0; x < 160; x++)

   138 			{

   139 				gbSgbDraw32Bit(dest++, color);

   140 			}

   141 		}

   142 	}

   143 	break;

   144 	}

   145 }

   146 

   147 void gbSgbRenderScreenToBuffer()

   148 {

   149 	u16 mapAddress = 0x9800;

   150 

   151 	if (register_LCDC & 0x08)

   152 		mapAddress = 0x9c00;

   153 

   154 	u16 patternAddress = 0x8800;

   155 

   156 	int flag = 1;

   157 

   158 	if (register_LCDC & 0x10)

   159 	{

   160 		patternAddress = 0x8000;

   161 		flag = 0;

   162 	}

   163 

   164 	u8 *toAddress = gbSgbScreenBuffer;

   165 

   166 	for (int i = 0; i < 13; i++)

   167 	{

   168 		for (int j = 0; j < 20; j++)

   169 		{

   170 			int tile = gbReadMemoryQuick(mapAddress);

   171 			mapAddress++;

   172 

   173 			if (flag)

   174 			{

   175 				if (tile > 127)

   176 					tile -= 128;

   177 				else

   178 					tile += 128;

   179 			}

   180 			for (int k = 0; k < 16; k++)

   181 				*toAddress++ = gbReadMemoryQuick(patternAddress + tile * 16 + k);

   182 		}

   183 		mapAddress += 12;

   184 	}

   185 }

   186 

   187 void gbSgbDrawBorderTile(int x, int y, int tile, int attr)

   188 {

   189 	u16 *dest	= (u16 *)pix + ((y + 1) * (256 + 2)) + x;

   190 	u8 * dest8	= (u8 *)pix + ((y * 256) + x) * 3;

   191 	u32 *dest32 = (u32 *)pix + ((y + 1) * 257) + x;

   192 

   193 	u8 *tileAddress	 = &gbSgbBorderChar[tile * 32];

   194 	u8 *tileAddress2 = &gbSgbBorderChar[tile * 32 + 16];

   195 

   196 	u8 l = 8;

   197 

   198 	u8 palette = ((attr >> 2) & 7);

   199 

   200 	if (palette < 4)

   201 		palette += 4;

   202 

   203 	palette *= 16;

   204 

   205 	u8 xx = 0;

   206 	u8 yy = 0;

   207 

   208 	int flipX = attr & 0x40;

   209 	int flipY = attr & 0x80;

   210 

   211 	while (l > 0)

   212 	{

   213 		u8 mask = 0x80;

   214 		u8 a	= *tileAddress++;

   215 		u8 b	= *tileAddress++;

   216 		u8 c	= *tileAddress2++;

   217 		u8 d	= *tileAddress2++;

   218 

   219 		while (mask > 0)

   220 		{

   221 			u8 color = 0;

   222 			if (a & mask)

   223 				color++;

   224 			if (b & mask)

   225 				color += 2;

   226 			if (c & mask)

   227 				color += 4;

   228 			if (d & mask)

   229 				color += 8;

   230 

   231 			u8 xxx = xx;

   232 			u8 yyy = yy;

   233 

   234 			if (flipX)

   235 				xxx = 7 - xx;

   236 			if (flipY)

   237 				yyy = 7 - yy;

   238 

   239 			u8 realx = x + xxx;

   240 			u8 realy = y + yyy;

   241 

   242 			u16 c = gbPalette[palette + color];

   243 			if (!color)

   244 				c = gbPalette[0];

   245 			if ((realy < 40 || realy >= 184) || (realx < 48 || realx >= 208))

   246 			{

   247 				switch (systemColorDepth)

   248 				{

   249 				case 16:

   250 					gbSgbDraw16Bit(dest + yyy * (256 + 2) + xxx, c);

   251 					break;

   252 				case 24:

   253 					gbSgbDraw24Bit(dest8 + (yyy * 256 + xxx) * 3, c);

   254 					break;

   255 				case 32:

   256 					gbSgbDraw32Bit(dest32 + yyy * (256 + 1) + xxx, c);

   257 					break;

   258 				}

   259 			}

   260 

   261 			mask >>= 1;

   262 

   263 			xx++;

   264 		}

   265 		yy++;

   266 		xx = 0;

   267 		l--;

   268 		mask = 0x80;

   269 	}

   270 }

   271 

   272 void gbSgbRenderBorder()

   273 {

   274 	if (gbBorderOn)

   275 	{

   276 		u8 *fromAddress = gbSgbBorder;

   277 

   278 		for (u8 y = 0; y < 28; y++)

   279 		{

   280 			for (u8 x = 0; x < 32; x++)

   281 			{

   282 				u8 tile = *fromAddress++;

   283 				u8 attr = *fromAddress++;

   284 

   285 				gbSgbDrawBorderTile(x * 8, y * 8, tile, attr);

   286 			}

   287 		}

   288 	}

   289 }

   290 

   291 void gbSgbPicture()

   292 {

   293 	gbSgbRenderScreenToBuffer();

   294 

   295 	memcpy(gbSgbBorder, gbSgbScreenBuffer, 2048);

   296 

   297 	u16 *paletteAddr = (u16 *)&gbSgbScreenBuffer[2048];

   298 

   299 	for (int i = 64; i < 128; i++)

   300 	{

   301 		gbPalette[i] = READ16LE(paletteAddr++);

   302 	}

   303 

   304 	gbSgbCGBSupport |= 4;

   305 

   306 	if (gbBorderAutomatic && !gbBorderOn && gbSgbCGBSupport > 4)

   307 	{

   308 		gbBorderOn = 1;

   309 		systemGbBorderOn();

   310 	}

   311 

   312 	if (gbBorderOn && !gbSgbMask)

   313 		gbSgbRenderBorder();

   314 

   315 	if (gbSgbMode && gbCgbMode && gbSgbCGBSupport > 4)

   316 	{

   317 		gbSgbCGBSupport = 0;

   318 		gbSgbMode		= 2;

   319 		gbSgbMask		= 0;

   320 		gbSgbRenderBorder();

   321 		gbReset();

   322 	}

   323 

   324 	if (gbSgbCGBSupport > 4)

   325 		gbSgbCGBSupport = 0;

   326 }

   327 

   328 void gbSgbSetPalette(int a, int b, u16 *p)

   329 {

   330 	u16 bit00 = READ16LE(p++);

   331 	int i;

   332 

   333 	for (i = 1; i < 4; i++)

   334 	{

   335 		gbPalette[a * 4 + i] = READ16LE(p++);

   336 	}

   337 

   338 	for (i = 1; i < 4; i++)

   339 	{

   340 		gbPalette[b * 4 + i] = READ16LE(p++);

   341 	}

   342 

   343 	gbPalette[0] = gbPalette[4] = gbPalette[8] = gbPalette[12] = bit00;

   344 	if (gbBorderOn && !gbSgbMask)

   345 		gbSgbRenderBorder();

   346 }

   347 

   348 void gbSgbScpPalette()

   349 {

   350 	gbSgbRenderScreenToBuffer();

   351 

   352 	u16 *fromAddress = (u16 *)gbSgbScreenBuffer;

   353 

   354 	for (int i = 0; i < 512 * 4; i++)

   355 	{

   356 		gbSgbSCPPalette[i] = READ16LE(fromAddress++);

   357 	}

   358 }

   359 

   360 void gbSgbSetATF(int n)

   361 {

   362 	if (n < 0)

   363 		n = 0;

   364 	if (n > 44)

   365 		n = 44;

   366 	memcpy(gbSgbATF, &gbSgbATFList[n * 20 * 18], 20 * 18);

   367 

   368 	if (gbSgbPacket[1] & 0x40)

   369 	{

   370 		gbSgbMask = 0;

   371 		if (gbBorderOn)

   372 			gbSgbRenderBorder();

   373 	}

   374 }

   375 

   376 void gbSgbSetPalette()

   377 {

   378 	u16 pal = READ16LE((((u16 *)&gbSgbPacket[1]))) & 511;

   379 	memcpy(&gbPalette[0], &gbSgbSCPPalette[pal * 4], 4 * sizeof(u16));

   380 

   381 	pal = READ16LE((((u16 *)&gbSgbPacket[3]))) & 511;

   382 	memcpy(&gbPalette[4], &gbSgbSCPPalette[pal * 4], 4 * sizeof(u16));

   383 

   384 	pal = READ16LE((((u16 *)&gbSgbPacket[5]))) & 511;

   385 	memcpy(&gbPalette[8], &gbSgbSCPPalette[pal * 4], 4 * sizeof(u16));

   386 

   387 	pal = READ16LE((((u16 *)&gbSgbPacket[7]))) & 511;

   388 	memcpy(&gbPalette[12], &gbSgbSCPPalette[pal * 4], 4 * sizeof(u16));

   389 

   390 	u8 atf = gbSgbPacket[9];

   391 

   392 	if (atf & 0x80)

   393 	{

   394 		gbSgbSetATF(atf & 0x3f);

   395 	}

   396 

   397 	if (atf & 0x40)

   398 	{

   399 		gbSgbMask = 0;

   400 		if (gbBorderOn)

   401 			gbSgbRenderBorder();

   402 	}

   403 }

   404 

   405 void gbSgbAttributeBlock()

   406 {

   407 	u8 *fromAddress = &gbSgbPacket[1];

   408 

   409 	u8 nDataSet = *fromAddress++;

   410 	if (nDataSet > 12)

   411 		nDataSet = 12;

   412 	if (nDataSet == 0)

   413 		nDataSet = 1;

   414 

   415 	while (nDataSet)

   416 	{

   417 		u8 controlCode		  = (*fromAddress++) & 7;

   418 		u8 paletteDesignation = (*fromAddress++) & 0x3f;

   419 		u8 startH = (*fromAddress++) & 0x1f;

   420 		u8 startV = (*fromAddress++) & 0x1f;

   421 		u8 endH	  = (*fromAddress++) & 0x1f;

   422 		u8 endV	  = (*fromAddress++) & 0x1f;

   423 

   424 		u8 *toAddress = gbSgbATF;

   425 

   426 		for (u8 y = 0; y < 18; y++)

   427 		{

   428 			for (u8 x = 0; x < 20; x++)

   429 			{

   430 				if (x < startH || y < startV ||

   431 				    x > endH || y > endV)

   432 				{

   433 					// outside

   434 					if (controlCode & 0x04)

   435 						*toAddress = (paletteDesignation >> 4) & 0x03;

   436 				}

   437 				else if (x > startH && x < endH &&

   438 				         y > startV && y < endV)

   439 				{

   440 					// inside

   441 					if (controlCode & 0x01)

   442 						*toAddress = paletteDesignation & 0x03;

   443 				}

   444 				else

   445 				{

   446 					// surrounding line

   447 					if (controlCode & 0x02)

   448 						*toAddress = (paletteDesignation >> 2) & 0x03;

   449 					else if (controlCode == 0x01)

   450 						*toAddress = paletteDesignation & 0x03;

   451 				}

   452 				toAddress++;

   453 			}

   454 		}

   455 		nDataSet--;

   456 	}

   457 }

   458 

   459 void gbSgbSetColumnPalette(u8 col, u8 p)

   460 {

   461 	//  if(col < 0)

   462 	//    col = 0;

   463 	if (col > 19)

   464 		col = 19;

   465 

   466 	p &= 3;

   467 

   468 	u8 *toAddress = &gbSgbATF[col];

   469 

   470 	for (u8 y = 0; y < 18; y++)

   471 	{

   472 		*toAddress = p;

   473 		toAddress += 20;

   474 	}

   475 }

   476 

   477 void gbSgbSetRowPalette(u8 row, u8 p)

   478 {

   479 	//  if(row < 0)

   480 	//    row = 0;

   481 	if (row > 17)

   482 		row = 17;

   483 

   484 	p &= 3;

   485 

   486 	u8 *toAddress = &gbSgbATF[row * 20];

   487 

   488 	for (u8 x = 0; x < 20; x++)

   489 	{

   490 		*toAddress++ = p;

   491 	}

   492 }

   493 

   494 void gbSgbAttributeDivide()

   495 {

   496 	u8 control = gbSgbPacket[1];

   497 	u8 coord   = gbSgbPacket[2];

   498 	u8 colorBR = control & 3;

   499 	u8 colorAL = (control >> 2) & 3;

   500 	u8 colorOL = (control >> 4) & 3;

   501 

   502 	if (control & 0x40)

   503 	{

   504 		if (coord > 17)

   505 			coord = 17;

   506 

   507 		for (u8 i = 0; i < 18; i++)

   508 		{

   509 			if (i < coord)

   510 				gbSgbSetRowPalette(i, colorAL);

   511 			else if (i > coord)

   512 				gbSgbSetRowPalette(i, colorBR);

   513 			else

   514 				gbSgbSetRowPalette(i, colorOL);

   515 		}

   516 	}

   517 	else

   518 	{

   519 		if (coord > 19)

   520 			coord = 19;

   521 

   522 		for (u8 i = 0; i < 20; i++)

   523 		{

   524 			if (i < coord)

   525 				gbSgbSetColumnPalette(i, colorAL);

   526 			else if (i > coord)

   527 				gbSgbSetColumnPalette(i, colorBR);

   528 			else

   529 				gbSgbSetColumnPalette(i, colorOL);

   530 		}

   531 	}

   532 }

   533 

   534 void gbSgbAttributeLine()

   535 {

   536 	u8 *fromAddress = &gbSgbPacket[1];

   537 

   538 	u8 nDataSet = *fromAddress++;

   539 

   540 	if (nDataSet > 0x6e)

   541 		nDataSet = 0x6e;

   542 

   543 	while (nDataSet)

   544 	{

   545 		u8 line = *fromAddress++;

   546 		u8 num	= line & 0x1f;

   547 		u8 pal	= (line >> 5) & 0x03;

   548 		if (line & 0x80)

   549 		{

   550 			if (num > 17)

   551 				num = 17;

   552 			gbSgbSetRowPalette(num, pal);

   553 		}

   554 		else

   555 		{

   556 			if (num > 19)

   557 				num = 19;

   558 			gbSgbSetColumnPalette(num, pal);

   559 		}

   560 		nDataSet--;

   561 	}

   562 }

   563 

   564 void gbSgbAttributeCharacter()

   565 {

   566 	u8	startH	 = gbSgbPacket[1] & 0x1f;

   567 	u8	startV	 = gbSgbPacket[2] & 0x1f;

   568 	int nDataSet = READ16LE(((u16 *)&gbSgbPacket[3]));

   569 	int style	 = gbSgbPacket[5] & 1;

   570 	if (startH > 19)

   571 		startH = 19;

   572 	if (startV > 17)

   573 		startV = 17;

   574 

   575 	u8	s = 6;

   576 	u8 *fromAddress = &gbSgbPacket[6];

   577 	u8	v = *fromAddress++;

   578 

   579 	if (style)

   580 	{

   581 		while (nDataSet)

   582 		{

   583 			u8 p = (v >> s) & 3;

   584 			gbSgbATF[startV * 20 + startH] = p;

   585 			startV++;

   586 			if (startV == 18)

   587 			{

   588 				startV = 0;

   589 				startH++;

   590 				if (startH == 20)

   591 					break;

   592 			}

   593 

   594 			if (s)

   595 				s -= 2;

   596 			else

   597 			{

   598 				s = 6;

   599 				v = *fromAddress++;

   600 				nDataSet--;

   601 			}

   602 		}

   603 	}

   604 	else

   605 	{

   606 		while (nDataSet)

   607 		{

   608 			u8 p = (v >> s) & 3;

   609 			gbSgbATF[startV * 20 + startH] = p;

   610 			startH++;

   611 			if (startH == 20)

   612 			{

   613 				startH = 0;

   614 				startV++;

   615 				if (startV == 18)

   616 					break;

   617 			}

   618 

   619 			if (s)

   620 				s -= 2;

   621 			else

   622 			{

   623 				s = 6;

   624 				v = *fromAddress++;

   625 				nDataSet--;

   626 			}

   627 		}

   628 	}

   629 }

   630 

   631 void gbSgbSetATFList()

   632 {

   633 	gbSgbRenderScreenToBuffer();

   634 

   635 	u8 *fromAddress = gbSgbScreenBuffer;

   636 	u8 *toAddress	= gbSgbATFList;

   637 

   638 	for (int i = 0; i < 45; i++)

   639 	{

   640 		for (int j = 0; j < 90; j++)

   641 		{

   642 			u8 v = *fromAddress++;

   643 			u8 s = 6;

   644 			if (i == 2)

   645 				s = 6;

   646 			for (int k = 0; k < 4; k++)

   647 			{

   648 				*toAddress++ = (v >> s) & 0x03;

   649 				s -= 2;

   650 			}

   651 		}

   652 	}

   653 }

   654 

   655 void gbSgbMaskEnable()

   656 {

   657 	int gbSgbMaskFlag = gbSgbPacket[1] & 3;

   658 

   659 	gbSgbMask = gbSgbMaskFlag;

   660 

   661 	switch (gbSgbMaskFlag)

   662 	{

   663 	case 1:

   664 		break;

   665 	case 2:

   666 		gbSgbFillScreen(0x0000);

   667 		//    memset(&gbPalette[0], 0, 128*sizeof(u16));

   668 		break;

   669 	case 3:

   670 		gbSgbFillScreen(gbPalette[0]);

   671 		break;

   672 	}

   673 	if (!gbSgbMask)

   674 	{

   675 		if (gbBorderOn)

   676 			gbSgbRenderBorder();

   677 	}

   678 }

   679 

   680 void gbSgbChrTransfer()

   681 {

   682 	gbSgbRenderScreenToBuffer();

   683 

   684 	int address = (gbSgbPacket[1] & 1) * (128 * 32);

   685 

   686 	if (gbSgbPacket[1] & 1)

   687 		gbSgbCGBSupport |= 2;

   688 	else

   689 		gbSgbCGBSupport |= 1;

   690 

   691 	memcpy(&gbSgbBorderChar[address], gbSgbScreenBuffer, 128 * 32);

   692 

   693 	if (gbBorderAutomatic && !gbBorderOn && gbSgbCGBSupport > 4)

   694 	{

   695 		gbBorderOn = 1;

   696 		systemGbBorderOn();

   697 	}

   698 

   699 	if (gbBorderOn && !gbSgbMask)

   700 		gbSgbRenderBorder();

   701 

   702 	if (gbSgbMode && gbCgbMode && gbSgbCGBSupport == 7)

   703 	{

   704 		gbSgbCGBSupport = 0;

   705 		gbSgbMode		= 2;

   706 		gbSgbMask		= 0;

   707 		gbSgbRenderBorder();

   708 		gbReset();

   709 	}

   710 

   711 	if (gbSgbCGBSupport > 4)

   712 		gbSgbCGBSupport = 0;

   713 }

   714 

   715 void gbSgbMultiRequest()

   716 {

   717 	if (gbSgbPacket[1] & 1)

   718 	{

   719 		gbSgbMultiplayer = 1;

   720 		if (gbSgbPacket[1] & 2)

   721 			gbSgbFourPlayers = 1;

   722 		else

   723 			gbSgbFourPlayers = 0;

   724 		gbSgbNextController = 0x0e;

   725 	}

   726 	else

   727 	{

   728 		gbSgbFourPlayers	= 0;

   729 		gbSgbMultiplayer	= 0;

   730 		gbSgbNextController = 0x0f;

   731 	}

   732 }

   733 

   734 void gbSgbCommand()

   735 {

   736 	int command = gbSgbPacket[0] >> 3;

   737 	//  int nPacket = gbSgbPacket[0] & 7;

   738 

   739 	switch (command)

   740 	{

   741 	case 0x00:

   742 		gbSgbSetPalette(0, 1, (u16 *)&gbSgbPacket[1]);

   743 		break;

   744 	case 0x01:

   745 		gbSgbSetPalette(2, 3, (u16 *)&gbSgbPacket[1]);

   746 		break;

   747 	case 0x02:

   748 		gbSgbSetPalette(0, 3, (u16 *)&gbSgbPacket[1]);

   749 		break;

   750 	case 0x03:

   751 		gbSgbSetPalette(1, 2, (u16 *)&gbSgbPacket[1]);

   752 		break;

   753 	case 0x04:

   754 		gbSgbAttributeBlock();

   755 		break;

   756 	case 0x05:

   757 		gbSgbAttributeLine();

   758 		break;

   759 	case 0x06:

   760 		gbSgbAttributeDivide();

   761 		break;

   762 	case 0x07:

   763 		gbSgbAttributeCharacter();

   764 		break;

   765 	case 0x0a:

   766 		gbSgbSetPalette();

   767 		break;

   768 	case 0x0b:

   769 		gbSgbScpPalette();

   770 		break;

   771 	case 0x11:

   772 		gbSgbMultiRequest();

   773 		break;

   774 	case 0x13:

   775 		gbSgbChrTransfer();

   776 		break;

   777 	case 0x14:

   778 		gbSgbPicture();

   779 		break;

   780 	case 0x15:

   781 		gbSgbSetATFList();

   782 		break;

   783 	case 0x16:

   784 		gbSgbSetATF(gbSgbPacket[1] & 0x3f);

   785 		break;

   786 	case 0x17:

   787 		gbSgbMaskEnable();

   788 		break;

   789 	}

   790 }

   791 

   792 void gbSgbResetPacketState()

   793 {

   794 	gbSgbPacketState   = GBSGB_NONE;

   795 	gbSgbPacketTimeout = 0;

   796 }

   797 

   798 void gbSgbDoBitTransfer(u8 value)

   799 {

   800 	value = value & 0x30;

   801 	switch (gbSgbPacketState)

   802 	{

   803 	case GBSGB_NONE:

   804 		if (value == 0)

   805 		{

   806 			gbSgbPacketState   = GBSGB_RESET;

   807 			gbSgbPacketTimeout = GBSGB_PACKET_TIMEOUT;

   808 		}

   809 		else if (value == 0x30)

   810 		{

   811 			if (gbSgbMultiplayer)

   812 			{

   813 				if ((gbSgbReadingController & 7) == 7)

   814 				{

   815 					gbSgbReadingController = 0;

   816 					if (gbSgbMultiplayer)

   817 					{

   818 						gbSgbNextController--;

   819 						if (gbSgbFourPlayers)

   820 						{

   821 							if (gbSgbNextController == 0x0b)

   822 								gbSgbNextController = 0x0f;

   823 						}

   824 						else

   825 						{

   826 							if (gbSgbNextController == 0x0d)

   827 								gbSgbNextController = 0x0f;

   828 						}

   829 					}

   830 				}

   831 				else

   832 				{

   833 					gbSgbReadingController &= 3;

   834 				}

   835 			}

   836 			gbSgbPacketTimeout = 0;

   837 		}

   838 		else

   839 		{

   840 			if (value == 0x10)

   841 				gbSgbReadingController |= 0x2;

   842 			else if (value == 0x20)

   843 				gbSgbReadingController |= 0x01;

   844 			gbSgbPacketTimeout = 0;

   845 		}

   846 		gbSgbPacketTimeout = 0;

   847 		break;

   848 	case GBSGB_RESET:

   849 		if (value == 0x30)

   850 		{

   851 			gbSgbPacketState   = GBSGB_PACKET_TRANSMIT;

   852 			gbSgbPacketByte	   = 0;

   853 			gbSgbPacketNBits   = 0;

   854 			gbSgbPacketTimeout = GBSGB_PACKET_TIMEOUT;

   855 		}

   856 		else if (value == 0x00)

   857 		{

   858 			gbSgbPacketTimeout = GBSGB_PACKET_TIMEOUT;

   859 			gbSgbPacketState   = GBSGB_RESET;

   860 		}

   861 		else

   862 		{

   863 			gbSgbPacketState   = GBSGB_NONE;

   864 			gbSgbPacketTimeout = 0;

   865 		}

   866 		break;

   867 	case GBSGB_PACKET_TRANSMIT:

   868 		if (value == 0)

   869 		{

   870 			gbSgbPacketState   = GBSGB_RESET;

   871 			gbSgbPacketTimeout = 0;

   872 		}

   873 		else if (value == 0x30)

   874 		{

   875 			if (gbSgbPacketNBits == 128)

   876 			{

   877 				gbSgbPacketNBits = 0;

   878 				gbSgbPacketByte	 = 0;

   879 				gbSgbPacketNumber++;

   880 				gbSgbPacketTimeout = 0;

   881 				if (gbSgbPacketNumber == (gbSgbPacket[0] & 7))

   882 				{

   883 					gbSgbCommand();

   884 					gbSgbPacketNumber  = 0;

   885 					gbSgbPacketState   = GBSGB_NONE;

   886 					gbSgbPacketTimeout = 0;

   887 				}

   888 			}

   889 			else

   890 			{

   891 				if (gbSgbPacketNBits < 128)

   892 				{

   893 					gbSgbPacket[gbSgbPacketNumber * 16 + gbSgbPacketByte] >>= 1;

   894 					gbSgbPacket[gbSgbPacketNumber * 16 + gbSgbPacketByte]  |= gbSgbBit;

   895 					gbSgbPacketNBits++;

   896 					if (!(gbSgbPacketNBits & 7))

   897 					{

   898 						gbSgbPacketByte++;

   899 					}

   900 					gbSgbPacketTimeout = GBSGB_PACKET_TIMEOUT;

   901 				}

   902 			}

   903 		}

   904 		else

   905 		{

   906 			if (value == 0x20)

   907 				gbSgbBit = 0x00;

   908 			else

   909 				gbSgbBit = 0x80;

   910 			gbSgbPacketTimeout = GBSGB_PACKET_TIMEOUT;

   911 		}

   912 		gbSgbReadingController = 0;

   913 		break;

   914 	default:

   915 		gbSgbPacketState   = GBSGB_NONE;

   916 		gbSgbPacketTimeout = 0;

   917 		break;

   918 	}

   919 }

   920 

   921 variable_desc gbSgbSaveStruct[] = {

   922 	{ &gbSgbMask,			   sizeof(int32) },

   923 	{ &gbSgbPacketState,	   sizeof(int32) },

   924 	{ &gbSgbBit,			   sizeof(int32) },

   925 	{ &gbSgbPacketNBits,	   sizeof(int32) },

   926 	{ &gbSgbPacketByte,		   sizeof(int32) },

   927 	{ &gbSgbPacketNumber,	   sizeof(int32) },

   928 	{ &gbSgbMultiplayer,	   sizeof(int32) },

   929 	{ &gbSgbNextController,	   sizeof(u8)	 },

   930 	{ &gbSgbReadingController, sizeof(u8)	 },

   931 	{ NULL,					   0			 }

   932 };

   933 

   934 variable_desc gbSgbSaveStructV3[] = {

   935 	{ &gbSgbMask,			   sizeof(int32) },

   936 	{ &gbSgbPacketState,	   sizeof(int32) },

   937 	{ &gbSgbBit,			   sizeof(int32) },

   938 	{ &gbSgbPacketNBits,	   sizeof(int32) },

   939 	{ &gbSgbPacketByte,		   sizeof(int32) },

   940 	{ &gbSgbPacketNumber,	   sizeof(int32) },

   941 	{ &gbSgbMultiplayer,	   sizeof(int32) },

   942 	{ &gbSgbNextController,	   sizeof(u8)	 },

   943 	{ &gbSgbReadingController, sizeof(u8)	 },

   944 	{ &gbSgbFourPlayers,	   sizeof(int32) },

   945 	{ NULL,					   0			 }

   946 };

   947 

   948 void gbSgbSaveGame(gzFile gzFile)

   949 {

   950 	utilWriteData(gzFile, gbSgbSaveStructV3);

   951 

   952 	utilGzWrite(gzFile, gbSgbBorder, 2048);

   953 	utilGzWrite(gzFile, gbSgbBorderChar, 32 * 256);

   954 

   955 	utilGzWrite(gzFile, gbSgbPacket, 16 * 7);

   956 

   957 	utilGzWrite(gzFile, gbSgbSCPPalette, 4 * 512 * sizeof(u16));

   958 	utilGzWrite(gzFile, gbSgbATF, 20 * 18);

   959 	utilGzWrite(gzFile, gbSgbATFList, 45 * 20 * 18);

   960 

   961 	utilGzWrite(gzFile, gbSgbScreenBuffer, 4160);

   962 	utilGzWrite(gzFile, &gbSgbMode, sizeof(gbSgbMode));

   963 	utilGzWrite(gzFile, &gbSgbCGBSupport, sizeof(gbSgbCGBSupport));

   964 	utilGzWrite(gzFile, &gbSgbPacketTimeout, sizeof(gbSgbPacketTimeout));

   965 }

   966 

   967 void gbSgbReadGame(gzFile gzFile, int version)

   968 {

   969 	if (version >= 3)

   970 		utilReadData(gzFile, gbSgbSaveStructV3);

   971 	else

   972 	{

   973 		utilReadData(gzFile, gbSgbSaveStruct);

   974 		gbSgbFourPlayers = 0;

   975 	}

   976 

   977 	if (version >= 8)

   978 	{

   979 		utilGzRead(gzFile, gbSgbBorder, 2048);

   980 		utilGzRead(gzFile, gbSgbBorderChar, 32 * 256);

   981 	}

   982 

   983 	utilGzRead(gzFile, gbSgbPacket, 16 * 7);

   984 

   985 	utilGzRead(gzFile, gbSgbSCPPalette, 4 * 512 * sizeof(u16));

   986 	utilGzRead(gzFile, gbSgbATF, 20 * 18);

   987 	utilGzRead(gzFile, gbSgbATFList, 45 * 20 * 18);

   988 

   989 	if (version >= 11)

   990 	{

   991 		utilGzRead(gzFile, gbSgbScreenBuffer, 4160);

   992 		utilGzRead(gzFile, &gbSgbMode, sizeof(gbSgbMode));

   993 		utilGzRead(gzFile, &gbSgbCGBSupport, sizeof(gbSgbCGBSupport));

   994 		utilGzRead(gzFile, &gbSgbPacketTimeout, sizeof(gbSgbPacketTimeout));

   995 	}

   996 }

   997
author	Robert McIntyre <rlm@mit.edu>
date	Mon, 05 Mar 2012 01:58:52 -0600
parents	f9f4f1b99eed
children