/* Project 16 Source Code~\r
- * Copyright (C) 2012-2017 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover\r
+ * Copyright (C) 2012-2022 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover\r
*\r
* This file is part of Project 16.\r
*\r
byte far* VGA=(byte far*) 0xA0000000; /* this points to video memory. */\r
\r
static void fadePalette(sbyte fade, sbyte start, word iter, byte *palette);\r
-static byte tmppal[PAL_SIZE];\r
+/*static */byte tmppal[PAL_SIZE];\r
\r
//===========================================================================\r
\r
__asm cld;\r
\r
VGAmodeX(1/*TODO other modes*/, 1, gvar);\r
- VL_LoadPalFileCore(gvar->video.palette, gvar);\r
+//-- VL_LoadPalFileCore(gvar->video.palette, gvar);\r
+ VL_SetCorePal(gvar);\r
//Quit ("Improper video card! If you really have a VGA card that I am not\ndetecting it!", gvar);\r
}\r
\r
gvar->video.page[1].dx=gvar->video.page[1].dy=TILEWH; // 1 tile size buffer\r
gvar->video.page[2].dx=gvar->video.page[2].dy=\r
gvar->video.page[3].dx=gvar->video.page[3].dy=0; // cache pages are buffer wwww\r
+\r
+ gvar->video.page[0].tlx=gvar->mv[0].tx*TILEWH;\r
+ gvar->video.page[0].tly=gvar->mv[0].ty*TILEWH;\r
}\r
\r
//\r
}\r
\r
\r
-/*byte *\r
+byte *\r
modexNewPal() {\r
byte *ptr;\r
- ptr = mAlloc(PAL_SIZE);\r
+ ptr = malloc(PAL_SIZE);\r
\r
// handle errors\r
if(!ptr) {\r
}\r
\r
return ptr;\r
-}*/\r
+}\r
+// old library\r
+static struct pcxHeader {\r
+ byte id;\r
+ byte version;\r
+ byte encoding;\r
+ byte bpp;\r
+ word xmin;\r
+ word ymin;\r
+ word xmax;\r
+ word ymax;\r
+ word hres;\r
+ word vres;\r
+ byte pal16[48];\r
+ byte res1;\r
+ word bpplane;\r
+ word palType;\r
+ word hScreenSize;\r
+ word vScreenSize;\r
+ byte padding[54];\r
+} head;\r
+\r
+\r
+static void loadPcxStage1(FILE *file, bitmap_t *result) {\r
+ long bufSize;\r
+ int index;\r
+ byte count, val;\r
+ long int pos;\r
+\r
+ /* read the header */\r
+ fread(&head, sizeof(char), sizeof(struct pcxHeader), file);\r
+\r
+ /* get the width and height */\r
+ result->width = head.xmax - head.xmin + 1;\r
+ result->height = head.ymax - head.ymin + 1;\r
+\r
+ /* make sure this is 8bpp */\r
+ if(head.bpp != 8) {\r
+ printf("I only know how to handle 8bpp pcx files!\n");\r
+ fclose(file);\r
+ exit(-2);\r
+ }\r
+}\r
+\r
+void loadPcxPalette(FILE *file, bitmap_t *result) {\r
+ byte val;\r
+ int index;\r
+\r
+ /* handle the palette */\r
+ fseek(file, -769, SEEK_END);\r
+ val = fgetc(file);\r
+ result->palette = modexNewPal();\r
+ if(head.version == 5 && val == 12) {\r
+ /* use the vga palette */\r
+ for(index=0; !feof(file) && index < PAL_SIZE; index++) {\r
+ val = fgetc(file);\r
+ result->palette[index] = val >> 2;\r
+ }\r
+ } else {\r
+ /* use the 16 color palette */\r
+ for(index=0; index<48; index++) {\r
+ result->palette[index] = head.pal16[index];\r
+ }\r
+ }\r
+}\r
\r
\r
void\r
fclose(file);\r
}\r
\r
+bitmap_t\r
+bitmapLoadPcx(char *filename) {\r
+ FILE *file;\r
+ bitmap_t result;\r
+ long bufSize;\r
+ int index;\r
+ byte count, val;\r
+\r
+ /* open the PCX file for reading */\r
+ file = fopen(filename, "rb");\r
+ if(!file) {\r
+ printf("Could not open %s for reading.\n", filename);\r
+ exit(-2);\r
+ }\r
+\r
+ /* load the first part of the pcx file */\r
+ loadPcxStage1(file, &result);\r
+\r
+ /* allocate the buffer */\r
+ bufSize = result.width * result.height;\r
+ result.data = malloc(bufSize);\r
+ if(!result.data) {\r
+ printf("Could not allocate memory for bitmap data.");\r
+ fclose(file);\r
+ exit(-1);\r
+ }\r
+\r
+ /* read the buffer in */\r
+ index = 0;\r
+ do {\r
+ /* get the run length and the value */\r
+ count = fgetc(file);\r
+ if(0xC0 == (count & 0xC0)) { /* this is the run count */\r
+ count &= 0x3f;\r
+ val = fgetc(file);\r
+ } else {\r
+ val = count;\r
+ count = 1;\r
+ }\r
+\r
+ /* write the pixel the specified number of times */\r
+ for(; count && index < bufSize; count--,index++) {\r
+ result.data[index] = val;\r
+ }\r
+ } while(index < bufSize);\r
+\r
+ loadPcxPalette(file, &result);\r
+\r
+ fclose(file);\r
+\r
+ return result;\r
+}\r
+\r
+\r
+tileset_t\r
+bitmapLoadPcxTiles(char *filename, word twidth, word theight) {\r
+ tileset_t ts;\r
+ FILE *file;\r
+ bitmap_t result;\r
+ int i;\r
+\r
+ /* open the PCX file for reading */\r
+ file = fopen(filename, "rb");\r
+ if(!file) {\r
+ printf("Could not open %s for reading.\n", filename);\r
+ exit(-2);\r
+ }\r
+\r
+ /* load the first part of the pcx file */\r
+ loadPcxStage1(file, &result);\r
+\r
+ /* get the number of tiles and set up the result structure */\r
+ ts.twidth = twidth;\r
+ ts.theight = theight;\r
+ ts.ntiles = (result.width/twidth) * (result.height/theight);\r
+ ts.palette = result.palette;\r
+\r
+ /* allocate the pixel storage for the tiles */\r
+ ts.data = malloc(sizeof(byte*) * ts.ntiles);\r
+ ts.data[0] = malloc(sizeof(byte) * ts.ntiles * twidth * theight);\r
+ for(i=1; i < ts.ntiles; i++) {\r
+ ts.data[i] = ts.data[i-1] + twidth * theight;\r
+ }\r
+\r
+ /* finish off the file */\r
+ loadPcxPalette(file, &result);\r
+\r
+ fclose(file);\r
+\r
+ return ts;\r
+}\r
+\r
+void\r
+oldDrawBmp(byte far* page, int x, int y, bitmap_t *bmp, byte sprite)\r
+{\r
+ byte plane;\r
+ word px, py;\r
+ word offset;\r
+\r
+ /* TODO Make this fast. It's SLOOOOOOW */\r
+ for(plane=0; plane < 4; plane++) {\r
+ modexSelectPlane(PLANE(plane+x));\r
+ for(px = plane; px < bmp->width; px+=4) {\r
+ offset=px;\r
+ for(py=0; py<bmp->height; py++) {\r
+ if(!sprite || bmp->data[offset])\r
+ page[PAGE_OFFSET(x+px, y+py)] = bmp->data[offset];\r
+ offset+=bmp->width;\r
+ }\r
+ }\r
+ }\r
+}\r
+\r
+//* normal versions *//\r
+void\r
+modexDrawBmp(page_t *page, int x, int y, bitmap_t *bmp) {\r
+ /* draw the region (the entire freakin bitmap) */\r
+ modexDrawBmpRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);\r
+}\r
+\r
+void\r
+modexDrawBmpRegion(page_t *page, int x, int y,\r
+ int rx, int ry, int rw, int rh, bitmap_t *bmp) {\r
+ word poffset = (word)page->data + y*(page->width/4) + x/4;\r
+ byte *data = bmp->data;//+bmp->offset;\r
+ word bmpOffset = (word) data + ry * bmp->width + rx;\r
+ word width = rw;\r
+ word height = rh;\r
+ byte plane = 1 << ((byte) x & 0x03);\r
+ word scanCount = width/4 + (width%4 ? 1 :0);\r
+ word nextPageRow = page->width/4 - scanCount;\r
+ word nextBmpRow = (word) bmp->width - width;\r
+ word rowCounter=0;\r
+ byte planeCounter = 4;\r
+\r
+ __asm {\r
+ MOV AX, SCREEN_SEG ; go to the VGA memory\r
+ MOV ES, AX\r
+\r
+ MOV DX, SC_INDEX ; point at the map mask register\r
+ MOV AL, SC_MAPMASK ;\r
+ OUT DX, AL ;\r
+\r
+ PLANE_LOOP:\r
+ MOV DX, SC_DATA ; select the current plane\r
+ MOV AL, plane ;\r
+ OUT DX, AL ;\r
+\r
+ ;-- begin plane painting\r
+ MOV AX, height ; start the row counter\r
+ MOV rowCounter, AX ;\r
+ MOV DI, poffset ; go to the first pixel\r
+ MOV SI, bmpOffset ; go to the bmp pixel\r
+ ROW_LOOP:\r
+ MOV CX, width ; count the columns\r
+ SCAN_LOOP:\r
+ MOVSB ; copy the pixel\r
+ SUB CX, 3 ; we skip the next 3\r
+ ADD SI, 3 ; skip the bmp pixels\r
+ LOOP SCAN_LOOP ; finish the scan\r
+\r
+ MOV AX, nextPageRow\r
+ ADD DI, AX ; go to the next row on screen\r
+ MOV AX, nextBmpRow\r
+ ADD SI, AX ; go to the next row on bmp\r
+\r
+ DEC rowCounter\r
+ JNZ ROW_LOOP ; do all the rows\r
+ ;-- end plane painting\r
+ MOV AL, plane ; advance to the next plane\r
+ SHL AL, 1 ;\r
+ AND AL, 0x0f ; mask the plane properly\r
+ MOV plane, AL ; store the plane\r
+\r
+ INC bmpOffset ; start bmp at the right spot\r
+\r
+ DEC planeCounter\r
+ JNZ PLANE_LOOP ; do all 4 planes\r
+ }\r
+}\r
+\r
+void\r
+modexDrawSprite(page_t *page, int x, int y, bitmap_t *bmp) {\r
+ /* draw the whole sprite */\r
+ modexDrawSpriteRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);\r
+}\r
+\r
+void\r
+modexDrawSpriteRegion(page_t *page, int x, int y,\r
+ int rx, int ry, int rw, int rh, bitmap_t *bmp) {\r
+ word poffset = (word)page->data + y*(page->width/4) + x/4;\r
+ byte *data = bmp->data;//+bmp->offset;\r
+ word bmpOffset = (word) data + ry * bmp->width + rx;\r
+ word width = rw;\r
+ word height = rh;\r
+ byte plane = 1 << ((byte) x & 0x03);\r
+ word scanCount = width/4 + (width%4 ? 1 :0);\r
+ word nextPageRow = page->width/4 - scanCount;\r
+ word nextBmpRow = (word) bmp->width - width;\r
+ word rowCounter=0;\r
+ byte planeCounter = 4;\r
+\r
+ __asm {\r
+ MOV AX, SCREEN_SEG ; go to the VGA memory\r
+ MOV ES, AX\r
+\r
+ MOV DX, SC_INDEX ; point at the map mask register\r
+ MOV AL, SC_MAPMASK ;\r
+ OUT DX, AL ;\r
+\r
+ PLANE_LOOP:\r
+ MOV DX, SC_DATA ; select the current plane\r
+ MOV AL, plane ;\r
+ OUT DX, AL ;\r
+\r
+ ;-- begin plane painting\r
+ MOV AX, height ; start the row counter\r
+ MOV rowCounter, AX ;\r
+ MOV DI, poffset ; go to the first pixel\r
+ MOV SI, bmpOffset ; go to the bmp pixel\r
+ ROW_LOOP:\r
+ MOV CX, width ; count the columns\r
+ SCAN_LOOP:\r
+ LODSB\r
+ DEC SI\r
+ CMP AL, 0\r
+ JNE DRAW_PIXEL ; draw non-zero pixels\r
+\r
+ INC DI ; skip the transparent pixel\r
+ ADD SI, 1\r
+ JMP NEXT_PIXEL\r
+ DRAW_PIXEL:\r
+ MOVSB ; copy the pixel\r
+ NEXT_PIXEL:\r
+ SUB CX, 3 ; we skip the next 3\r
+ ADD SI, 3 ; skip the bmp pixels\r
+ LOOP SCAN_LOOP ; finish the scan\r
+\r
+ MOV AX, nextPageRow\r
+ ADD DI, AX ; go to the next row on screen\r
+ MOV AX, nextBmpRow\r
+ ADD SI, AX ; go to the next row on bmp\r
+\r
+ DEC rowCounter\r
+ JNZ ROW_LOOP ; do all the rows\r
+ ;-- end plane painting\r
+\r
+ MOV AL, plane ; advance to the next plane\r
+ SHL AL, 1 ;\r
+ AND AL, 0x0f ; mask the plane properly\r
+ MOV plane, AL ; store the plane\r
+\r
+ INC bmpOffset ; start bmp at the right spot\r
+\r
+ DEC planeCounter\r
+ JNZ PLANE_LOOP ; do all 4 planes\r
+ }\r
+}\r
+\r
+//* planar buffer versions *//\r
+void\r
+modexDrawBmpPBuf(page_t *page, int x, int y, planar_buf_t *bmp) {\r
+ /* draw the region (the entire freakin bitmap) */\r
+ modexDrawBmpPBufRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);\r
+}\r
+\r
+void\r
+modexDrawBmpPBufRegion(page_t *page, int x, int y,\r
+ int rx, int ry, int rw, int rh, planar_buf_t *bmp) {\r
+ word poffset = (word) page->data + y*(page->width/4) + x/4;\r
+ byte *data = (byte *)bmp->plane[0];\r
+ word bmpOffset = (word) data + ry * bmp->width + rx;\r
+ word width = rw;\r
+ word height = rh;\r
+ byte plane = 1 << ((byte) x & 0x03);\r
+ word scanCount = width/4 + (width%4 ? 1 :0);\r
+ word nextPageRow = page->width/4 - scanCount;\r
+ word nextBmpRow = (word) bmp->width - width;\r
+ word rowCounter=0;\r
+ byte planeCounter = 4;\r
+\r
+ __asm {\r
+ MOV AX, SCREEN_SEG ; go to the VGA memory\r
+ MOV ES, AX\r
+\r
+ MOV DX, SC_INDEX ; point at the map mask register\r
+ MOV AL, SC_MAPMASK ;\r
+ OUT DX, AL ;\r
+\r
+ PLANE_LOOP:\r
+ MOV DX, SC_DATA ; select the current plane\r
+ MOV AL, plane ;\r
+ OUT DX, AL ;\r
+\r
+ ;-- begin plane painting\r
+ MOV AX, height ; start the row counter\r
+ MOV rowCounter, AX ;\r
+ MOV DI, poffset ; go to the first pixel\r
+ MOV SI, bmpOffset ; go to the bmp pixel\r
+ ROW_LOOP:\r
+ MOV CX, width ; count the columns\r
+ SCAN_LOOP:\r
+\r
+\r
+\r
+\r
+\r
+\r
+\r
+\r
+\r
+ MOVSB ; copy the pixel\r
+\r
+ SUB CX, 3 ; we skip the next 3\r
+ ADD SI, 3 ; skip the bmp pixels\r
+ LOOP SCAN_LOOP ; finish the scan\r
+\r
+ MOV AX, nextPageRow\r
+ ADD DI, AX ; go to the next row on screen\r
+ MOV AX, nextBmpRow\r
+ ADD SI, AX ; go to the next row on bmp\r
+\r
+ DEC rowCounter\r
+ JNZ ROW_LOOP ; do all the rows\r
+ ;-- end plane painting\r
+\r
+ MOV AL, plane ; advance to the next plane\r
+ SHL AL, 1 ;\r
+ AND AL, 0x0f ; mask the plane properly\r
+ MOV plane, AL ; store the plane\r
+\r
+ INC bmpOffset ; start bmp at the right spot\r
+\r
+ DEC planeCounter\r
+ JNZ PLANE_LOOP ; do all 4 planes\r
+ }\r
+}\r
+\r
+void\r
+modexDrawSpritePBuf(page_t *page, int x, int y, planar_buf_t *bmp) {\r
+ /* draw the whole sprite */\r
+ modexDrawSpritePBufRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);\r
+}\r
+\r
+void\r
+modexDrawSpritePBufRegion(page_t *page, int x, int y,\r
+ int rx, int ry, int rw, int rh, planar_buf_t *bmp) {\r
+ word poffset = (word)page->data + y*(page->width/4) + x/4;\r
+ byte *data = (byte *)bmp->plane[0];\r
+ word bmpOffset = (word) data + ry * bmp->width + rx;\r
+ word width = rw;\r
+ word height = rh;\r
+ byte plane = 1 << ((byte) x & 0x03);\r
+ word scanCount = width/4 + (width%4 ? 1 :0);\r
+ word nextPageRow = page->width/4 - scanCount;\r
+ word nextBmpRow = (word) bmp->width - width;\r
+ word rowCounter=0;\r
+ byte planeCounter = 4;\r
+\r
+ __asm {\r
+ MOV AX, SCREEN_SEG ; go to the VGA memory\r
+ MOV ES, AX\r
+\r
+ MOV DX, SC_INDEX ; point at the map mask register\r
+ MOV AL, SC_MAPMASK ;\r
+ OUT DX, AL ;\r
+\r
+ PLANE_LOOP:\r
+ MOV DX, SC_DATA ; select the current plane\r
+ MOV AL, plane ;\r
+ OUT DX, AL ;\r
+\r
+ ;-- begin plane painting\r
+ MOV AX, height ; start the row counter\r
+ MOV rowCounter, AX ;\r
+ MOV DI, poffset ; go to the first pixel\r
+ MOV SI, bmpOffset ; go to the bmp pixel\r
+ ROW_LOOP:\r
+ MOV CX, width ; count the columns\r
+ SCAN_LOOP:\r
+ LODSB\r
+ DEC SI\r
+ CMP AL, 0\r
+ JNE DRAW_PIXEL ; draw non-zero pixels\r
+\r
+ INC DI ; skip the transparent pixel\r
+ ADD SI, 1\r
+ JMP NEXT_PIXEL\r
+ DRAW_PIXEL:\r
+ MOVSB ; copy the pixel\r
+ NEXT_PIXEL:\r
+ SUB CX, 3 ; we skip the next 3\r
+ ADD SI, 3 ; skip the bmp pixels\r
+ LOOP SCAN_LOOP ; finish the scan\r
+\r
+ MOV AX, nextPageRow\r
+ ADD DI, AX ; go to the next row on screen\r
+ MOV AX, nextBmpRow\r
+ ADD SI, AX ; go to the next row on bmp\r
+\r
+ DEC rowCounter\r
+ JNZ ROW_LOOP ; do all the rows\r
+ ;-- end plane painting\r
+\r
+ MOV AL, plane ; advance to the next plane\r
+ SHL AL, 1 ;\r
+ AND AL, 0x0f ; mask the plane properly\r
+ MOV plane, AL ; store the plane\r
+\r
+ INC bmpOffset ; start bmp at the right spot\r
+\r
+ DEC planeCounter\r
+ JNZ PLANE_LOOP ; do all 4 planes\r
+ }\r
+}\r
+// end of old library\r
+\r
+#define COREPALSIZE 9//27 //3*9\r
+\r
void VLL_LoadPalFilewithoffset(const char *filename, byte *palette, word o, word palsize, global_game_variables_t *gvar)\r
{\r
int fd;\r
\r
fd = open(filename,O_RDONLY|O_BINARY);\r
if (fd >= 0) {\r
- read(fd,palette, palsize);\r
+ read(fd,palette, palsize*3);\r
close(fd);\r
\r
- if(palsize==27) newpalette = palette; else{ //if core then load it\r
+ if(palsize==COREPALSIZE) newpalette = palette; else{ //if core then load it\r
newpalette = &palette[3]; //skip overscan color\r
if(!o) o++;\r
}\r
- VL_UpdatePaletteWrite(newpalette, o, gvar);\r
+ VL_UpdatePaletteWrite(newpalette, o, palsize, gvar);\r
}\r
}\r
\r
+//++++//\r
+void VL_SetCorePal(global_game_variables_t *gvar)\r
+{\r
+ byte *palette = &corepal;\r
+ word i;\r
+\r
+ vga_palette_lseek(0);\r
+ for (i=0;i < COREPALSIZE;i++)\r
+ vga_palette_write(palette[(i*3)+0]>>2,\r
+ palette[(i*3)+1]>>2,\r
+ palette[(i*3)+2]>>2);\r
+\r
+ VL_PaletteSync(gvar);\r
+}\r
+\r
void VL_LoadPalFile(const char *filename, byte *palette, global_game_variables_t *gvar)\r
{\r
VLL_LoadPalFilewithoffset(filename, palette,\r
- 0, //overwrite core/system palette\r
-// 9, //preserved core/system palette\r
- PAL_SIZE, gvar);\r
+ 0, //overwrite core/system palette\r
+// COREPALSIZE, //preserved core/system palette\r
+ PAL_SIZE/3, gvar);\r
}\r
\r
void VL_LoadPalFileCore(byte *palette, global_game_variables_t *gvar)\r
{\r
- VLL_LoadPalFilewithoffset("data/16.pal", palette, 0, 27, gvar);\r
+ VLL_LoadPalFilewithoffset("data/16.pal", palette, 0, COREPALSIZE, gvar);\r
}\r
\r
-void VL_UpdatePaletteWrite(byte *palette, word o, global_game_variables_t *gvar)\r
+void VL_UpdatePaletteWrite(byte *palette, word o, word p, global_game_variables_t *gvar)\r
{\r
word i;\r
\r
vga_palette_lseek(o);\r
- for (i=0;i < 255-o;i++)\r
+ for (i=0;i < p-o;i++)\r
vga_palette_write(palette[(i*3)+0]>>2,palette[(i*3)+1]>>2,palette[(i*3)+2]>>2);\r
\r
VL_PaletteSync(gvar);\r
}\r
}\r
\r
+// short hand of modexprint\r
+void VL_print(const byte *str, nibble pagenum, global_game_variables_t *gvar)\r
+{\r
+ modexprint(&(gvar->video.page[pagenum]), gvar->video.print.x, gvar->video.print.y, gvar->video.print.t, gvar->video.print.tlsw, gvar->video.print.color, gvar->video.print.bgcolor, gvar->video.VL_Started, str);\r
+}\r
+\r
/* palette dump on display! */\r
void modexpdump(nibble pagenum, global_game_variables_t *gvar)\r
{\r
// printf("========================================\n");\r
printf(" Virtual Screen: %dx", v->page[0].width); printf("%d ", v->page[0].height); printf("Tile: %dx", v->page[0].ti.tilesw); printf("%d", v->page[0].ti.tilesh); printf("=((Virtual Screen)/16)\n");\r
printf(" Screen: %dx", v->page[0].sw); printf("%d ", v->page[0].sh); printf("Tile: %dx", v->page[0].ti.tw); printf("%d", v->page[0].ti.th); printf("=((Screen)/16)\n");\r
- printf(" stride: %u ", vga_state.vga_stride);\r
+ printf(" vga_stride: %u ", vga_state.vga_stride);\r
+ printf("pagestride: %u ", v->page[0].stridew);\r
printf("draw_stride: %u ", vga_state.vga_draw_stride);\r
printf("draw_stride_limit: %u\n", vga_state.vga_draw_stride_limit);\r
\r