src/0.c

   1 #include <hw/cpu/cpu.h>\r
   2 #include <hw/dos/dos.h>\r
   3 #include <hw/vga/vga.h>\r
   4 #include <hw/vga/vrl.h>\r
   5 \r
   6 #include "src/tesuto.h"\r
   7 \r
   8 #define FILENAME_1 "data/aconita.vrl"\r
   9 #define FILENAME_2 "data/aconita.pal"\r
  10 \r
  11 static unsigned char palette[768];\r
  12 global_game_variables_t gvar;\r
  13 player_t player[1];\r
  14 \r
  15 int main(int argc,char **argv) {\r
  16         struct vrl1_vgax_header *vrl_header;\r
  17         vrl1_vgax_offset_t *vrl_lineoffs;\r
  18         unsigned char *buffer;\r
  19         unsigned int bufsz;\r
  20         int fd;\r
  21         char *bakapee1,*bakapee2;\r
  22 \r
  23         bakapee1=malloc(64);\r
  24         bakapee2=malloc(1024);\r
  25 \r
  26         IN_Startup();\r
  27         IN_Default(0,&player,ctrl_Joystick);\r
  28         IN_initplayer(&player, 0);\r
  29 \r
  30         if (argc < 3) {\r
  31                 fprintf(stderr,"drawvrl <VRL file> <palette file>\n");\r
  32                 bakapee1 = FILENAME_1;//"data/aconita.vrl";\r
  33                 bakapee2 = FILENAME_2;//"data/aconita.pal";\r
  34                 //return 1;\r
  35         }else{\r
  36                 if(argv[1]) bakapee1 = argv[1];\r
  37                 if(argv[2]) bakapee2 = argv[2];\r
  38         }\r
  39 \r
  40         fd = open(bakapee1,O_RDONLY|O_BINARY);\r
  41         if (fd < 0) {\r
  42                 fprintf(stderr,"Unable to open '%s'\n", bakapee1);\r
  43                 return 1;\r
  44         }\r
  45         {\r
  46                 unsigned long sz = lseek(fd,0,SEEK_END);\r
  47                 if (sz < sizeof(*vrl_header)) return 1;\r
  48                 if (sz >= 65535UL) return 1;\r
  49 \r
  50                 bufsz = (unsigned int)sz;\r
  51                 buffer = malloc(bufsz);\r
  52                 if (buffer == NULL) return 1;\r
  53 \r
  54                 lseek(fd,0,SEEK_SET);\r
  55                 if ((unsigned int)read(fd,buffer,bufsz) < bufsz) return 1;\r
  56 \r
  57                 vrl_header = (struct vrl1_vgax_header*)buffer;\r
  58                 if (memcmp(vrl_header->vrl_sig,"VRL1",4) || memcmp(vrl_header->fmt_sig,"VGAX",4)) return 1;\r
  59                 if (vrl_header->width == 0 || vrl_header->height == 0) return 1;\r
  60         }\r
  61         close(fd);\r
  62 \r
  63         probe_dos();\r
  64         if (!probe_vga()) {\r
  65                 printf("VGA probe failed\n");\r
  66                 return 1;\r
  67         }\r
  68         VGAmodeX(1, 1, &gvar);\r
  69 \r
  70         /* load color palette */\r
  71         fd = open(bakapee2,O_RDONLY|O_BINARY);\r
  72         if (fd >= 0) {\r
  73                 unsigned int i;\r
  74 \r
  75                 read(fd,palette,768);\r
  76                 close(fd);\r
  77 \r
  78                 vga_palette_lseek(0);\r
  79                 for (i=0;i < 256;i++) vga_palette_write(palette[(i*3)+0]>>2,palette[(i*3)+1]>>2,palette[(i*3)+2]>>2);\r
  80         }\r
  81 \r
  82         /* preprocess the sprite to generate line offsets */\r
  83         vrl_lineoffs = vrl1_vgax_genlineoffsets(vrl_header,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header));\r
  84         if (vrl_lineoffs == NULL) return 1;\r
  85 \r
  86         /* setup camera and screen~ */\r
  87         modexHiganbanaPageSetup(&gvar.video);\r
  88         gvar.video.page[1].dx=gvar.video.page[0].dx=16;\r
  89         gvar.video.page[1].dy=gvar.video.page[0].dy=16;\r
  90         modexShowPage(&(gvar.video.page[0]));\r
  91 \r
  92         #define VMEMHEIGHT gvar.video.page[0].height+gvar.video.page[1].height\r
  93 \r
  94         //4     this dose the screen\r
  95         {\r
  96                 unsigned int i,j,o;\r
  97                 /* fill screen with a distinctive pattern */\r
  98                 for (i=0;i < gvar.video.page[0].width;i++) {\r
  99                         o = i >> 2;\r
 100                         vga_write_sequencer(0x02/*map mask*/,1 << (i&3));\r
 101                         for (j=0;j < VMEMHEIGHT;j++,o += gvar.video.page[0].stridew)\r
 102                                 vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!\r
 103                 }\r
 104         }\r
 105 \r
 106         //while (getch() != 13);\r
 107 \r
 108         /* make distinctive pattern offscreen, render sprite, copy onscreen.\r
 109          * this time, we render the distinctive pattern to another offscreen location and just copy.\r
 110          * note this version is much faster too! */\r
 111         {\r
 112                 unsigned int i,j,o,o2;\r
 113                 int x,y,rx,ry,w,h;\r
 114                 unsigned int overdraw = 1;      // how many pixels to "overdraw" so that moving sprites with edge pixels don't leave streaks.\r
 115                                                 // if the sprite's edge pixels are clear anyway, you can set this to 0.\r
 116                 VGA_RAM_PTR omemptr;\r
 117                 int xdir=1,ydir=1;\r
 118 \r
 119                 //4     this dose the sprite? wwww\r
 120                 /* fill pattern offset with a distinctive pattern */\r
 121                 for (i=0;i < gvar.video.page[0].width;i++) {\r
 122                         o = (i >> 2) + (0x10000UL - (uint16_t)gvar.video.page[1].data);\r
 123                         vga_write_sequencer(0x02/*map mask*/,1 << (i&3));\r
 124                         for (j=0;j < VMEMHEIGHT;j++,o += gvar.video.page[0].stridew)\r
 125                                 vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!\r
 126                 }\r
 127 \r
 128                 /* starting coords. note: this technique is limited to x coordinates of multiple of 4 */\r
 129                 x = 0;\r
 130                 y = 0;\r
 131 \r
 132                 /* do it */\r
 133                 omemptr = vga_state.vga_graphics_ram; // save original mem ptr\r
 134 \r
 135                 while(!IN_KeyDown(sc_Escape))\r
 136                 {\r
 137                         IN_ReadControl(0,&player);\r
 138                         if(IN_KeyDown(2)) modexShowPage(&(gvar.video.page[0]));\r
 139                         if(IN_KeyDown(3)) modexShowPage(&(gvar.video.page[1]));\r
 140                         if(IN_KeyDown(68))      //f10\r
 141                         {\r
 142                                 //gvar.kurokku.fpscap=!gvar.kurokku.fpscap;\r
 143                                 IN_UserInput(1,1);\r
 144                         }\r
 145 \r
 146                         /* render box bounds. y does not need modification, but x and width must be multiple of 4 */\r
 147                         if (x >= overdraw) rx = (x - overdraw) & (~3);\r
 148                         else rx = -(gvar.video.page[0].dx);\r
 149                         if (y >= overdraw) ry = (y - overdraw);\r
 150                         else ry = -(gvar.video.page[0].dy);\r
 151                         h = vrl_header->height + overdraw + y - ry;\r
 152                         w = (x + vrl_header->width + (overdraw*2) + 3/*round up*/ - rx) & (~3);\r
 153                         if ((rx+w) > gvar.video.page[0].width) w = gvar.video.page[0].width-rx;\r
 154                         if ((ry+h) > gvar.video.page[0].height) h = (gvar.video.page[0].height)-ry;\r
 155 \r
 156                         /* block copy pattern to where we will draw the sprite */\r
 157                         vga_setup_wm1_block_copy();\r
 158                         o2 = gvar.video.page[0].pagesize;\r
 159                         o = (0x10000UL - (uint16_t)gvar.video.page[1].data) + (ry * gvar.video.page[0].stridew) + (rx >> 2); // source offscreen\r
 160                         for (i=0;i < h;i++,o += gvar.video.page[0].stridew,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2);\r
 161                         /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */\r
 162                         vga_restore_rm0wm0();\r
 163 \r
 164                         /* replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0) */\r
 165                         vga_state.vga_draw_stride_limit = (gvar.video.page[0].width + 3/*round up*/ - x) >> 2;\r
 166                         vga_state.vga_draw_stride = w >> 2;\r
 167                         vga_state.vga_graphics_ram = omemptr + gvar.video.page[0].pagesize;\r
 168 \r
 169                         /* then the sprite. note modding ram ptr means we just draw to (x&3,0) */\r
 170                         draw_vrl1_vgax_modex(x-rx,y-ry,vrl_header,vrl_lineoffs,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header));\r
 171 \r
 172                         /* restore ptr */\r
 173                         vga_state.vga_graphics_ram = omemptr;\r
 174 \r
 175                         /* block copy to visible RAM from offscreen */\r
 176                         vga_setup_wm1_block_copy();\r
 177                         o = gvar.video.page[0].pagesize; // source offscreen\r
 178                         o2 = (ry * gvar.video.page[0].stridew) + (rx >> 2); // dest visible (original stride)\r
 179                         for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += gvar.video.page[0].stridew) vga_wm1_mem_block_copy(o2,o,w >> 2);\r
 180                         /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */\r
 181                         vga_restore_rm0wm0();\r
 182 \r
 183                         /* restore stride */\r
 184                         vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew;\r
 185 \r
 186                         /* step */\r
 187                         x += xdir; y += ydir;\r
 188                         if ((x + vrl_header->width) >= ((gvar.video.page[0].width + gvar.video.page[0].dx) - 1) || x == -(gvar.video.page[0].dx))\r
 189                                 xdir = -xdir;\r
 190                         if ((y + vrl_header->height) >= ((gvar.video.page[0].height + gvar.video.page[0].dy) - 1) || y == -(gvar.video.page[0].dy))\r
 191                                 ydir = -ydir;\r
 192                         //printf("[x%u y%u]     [rx%u ry%u]             [w%u h%u]\n", x, y, rx, ry, w, h);\r
 193                 }\r
 194         }\r
 195 \r
 196         IN_UserInput(1,1);\r
 197 \r
 198         while(!IN_KeyDown(sc_Escape))\r
 199         {\r
 200                 if(IN_KeyDown(2)) modexShowPage(&(gvar.video.page[0]));\r
 201                 if(IN_KeyDown(3)) modexShowPage(&(gvar.video.page[1]));\r
 202         }\r
 203 \r
 204         modexShowPage(&(gvar.video.page[0]));\r
 205         /* another handy "demo" effect using VGA write mode 1.\r
 206          * we can take what's on screen and vertically squash it like an old analog TV set turning off. */\r
 207         {\r
 208                 unsigned int blank_line_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height * 2);\r
 209                 unsigned int copy_ofs = (gvar.video.page[0].stridew * gvar.video.page[0].height);\r
 210                 unsigned int display_ofs = 0x0000;\r
 211                 unsigned int i,y,soh,doh,dstart;\r
 212                 unsigned int dh_blankfill = 8;\r
 213                 unsigned int dh_step = 8;\r
 214                 uint32_t sh,dh,yf,ystep;\r
 215 \r
 216                 /* copy active display (0) to offscreen buffer (0x4000) */\r
 217                 vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew;\r
 218                 vga_setup_wm1_block_copy();\r
 219                 vga_wm1_mem_block_copy(copy_ofs,display_ofs,gvar.video.page[0].stridew * gvar.video.page[0].height);\r
 220                 vga_restore_rm0wm0();\r
 221 \r
 222                 /* need a blank line as well */\r
 223                 for (i=0;i < gvar.video.page[0].stridew;i++) vga_state.vga_graphics_ram[i+blank_line_ofs] = 0;\r
 224 \r
 225                 sh = dh = gvar.video.page[0].height;\r
 226                 while (dh >= dh_step) {\r
 227                         /* stop animating if the user hits ENTER */\r
 228                         if (kbhit()) {\r
 229                                 if (getch() == 13) break;\r
 230                         }\r
 231 \r
 232                         /* wait for vsync end */\r
 233                         vga_wait_for_vsync_end();\r
 234 \r
 235                         /* what scalefactor to use for stretching? */\r
 236                         ystep = (0x10000UL * sh) / dh;\r
 237                         dstart = (gvar.video.page[0].height - dh) / 2; // center the squash effect on screen, otherwise it would squash to top of screen\r
 238                         doh = display_ofs;\r
 239                         soh = copy_ofs;\r
 240                         yf = 0;\r
 241                         y = 0;\r
 242 \r
 243                         /* for performance, keep VGA in write mode 1 the entire render */\r
 244                         vga_setup_wm1_block_copy();\r
 245 \r
 246                         /* blank lines */\r
 247                         if (dstart >= dh_blankfill) y = dstart - dh_blankfill;\r
 248                         else y = 0;\r
 249                         doh = gvar.video.page[0].stridew * y;\r
 250 \r
 251                         while (y < dstart) {\r
 252                                 vga_wm1_mem_block_copy(doh,blank_line_ofs,gvar.video.page[0].stridew);\r
 253                                 doh += gvar.video.page[0].stridew;\r
 254                                 y++;\r
 255                         }\r
 256 \r
 257                         /* draw */\r
 258                         while (y < (dh+dstart)) {\r
 259                                 soh = copy_ofs + ((yf >> 16UL) * gvar.video.page[0].stridew);\r
 260                                 vga_wm1_mem_block_copy(doh,soh,gvar.video.page[0].stridew);\r
 261                                 doh += gvar.video.page[0].stridew;\r
 262                                 yf += ystep;\r
 263                                 y++;\r
 264                         }\r
 265 \r
 266                         /* blank lines */\r
 267                         while (y < gvar.video.page[0].height && y < (dh+dstart+dh_blankfill)) {\r
 268                                 vga_wm1_mem_block_copy(doh,blank_line_ofs,gvar.video.page[0].stridew);\r
 269                                 doh += gvar.video.page[0].stridew;\r
 270                                 y++;\r
 271                         }\r
 272 \r
 273                         /* done */\r
 274                         vga_restore_rm0wm0();\r
 275 \r
 276                         /* wait for vsync */\r
 277                         vga_wait_for_vsync();\r
 278 \r
 279                         /* make it shrink */\r
 280                         dh -= dh_step;\r
 281                         if (dh < 40) dh_step = 1;\r
 282                 }\r
 283         }\r
 284 \r
 285         IN_Shutdown();\r
 286         VGAmodeX(0, 1, &gvar);\r
 287         free(vrl_lineoffs);\r
 288         buffer = NULL;\r
 289         free(buffer);\r
 290         bufsz = 0;\r
 291         free(bakapee1);\r
 292         free(bakapee2);\r
 293         return 0;\r
 294 }\r