16/dos_gfx.cpp

   1 /*\r
   2  * LIB.C v1.2a\r
   3  *\r
   4  * by Robert Schmidt\r
   5  * (C)1993 Ztiff Zox Softwear\r
   6  *\r
   7  * Simple graphics library to accompany the article\r
   8  * \r
   9  *                                        INTRODUCTION TO MODE X.\r
  10  * \r
  11  * This library provides the basic functions for initializing and using\r
  12  * unchained (planar) 256-color VGA modes.  Currently supported are:\r
  13  *\r
  14  *        - 320x200\r
  15  *        - 320x240\r
  16  *\r
  17  * Functions are provided for:\r
  18  *\r
  19  *        - initializing one of the available modes\r
  20  *        - setting the start address of the VGA refresh data\r
  21  *        - setting active and visible display pages\r
  22  *        - writing and reading a single pixel to/from video memory\r
  23  *\r
  24  * The library is provided as a demonstration only, and is not claimed\r
  25  * to be particularly efficient or suited for any purpose.  It has only\r
  26  * been tested with Borland C++ 3.1 by the author.  Comments on success\r
  27  * or disaster with other compilers are welcome.\r
  28  *\r
  29  * This file is public domain.  Do with it whatever you'd like, but\r
  30  * please don't distribute it without the article.\r
  31  *\r
  32  * Thanks go out to various helpful netters who spotted the 0xE7 bug\r
  33  * in the set320x240x256() function!\r
  34  *\r
  35  * Modified by sparky4 so it can be compiled in open watcom ^^\r
  36  */\r
  37 \r
  38 \r
  39 \r
  40 \r
  41 /*\r
  42  * We 'require' a large data model simply to get rid of explicit 'far'\r
  43  * pointers and compiler specific '_fmemset()' functions and the likes.\r
  44  */\r
  45 #if !defined(__COMPACT__)\r
  46 # if !defined(__LARGE__)\r
  47 #  if !defined(__HUGE__)\r
  48 #   error Large data model required!  Try compiling with 'wcc -0 -ml lib.c'.\r
  49 #  endif\r
  50 # endif\r
  51 #endif\r
  52 \r
  53 #include <dos.h>\r
  54 #include <mem.h>\r
  55 #include <conio.h>\r
  56 \r
  57 //code from old library!\r
  58 /*src\lib\*/\r
  59 #include "dos_gfx.h"\r
  60 \r
  61 int old_mode;\r
  62 //color \82Ä\82·\82Æ\r
  63 int gq = LGQ;\r
  64 //\82Ä\82·\82Æ\r
  65 int q = 0;\r
  66 int bakax = 0, bakay = 0;\r
  67 cord xx = rand()&0%320, yy = rand()&0%240, sx = 0, sy = 0;\r
  68 byte coor;\r
  69 \r
  70 /*\r
  71  * Comment out the following #define if you don't want the testing main()\r
  72  * to be included.\r
  73  */\r
  74 #define TESTING\r
  75 \r
  76 /*\r
  77  * Define the port addresses of some VGA registers.\r
  78  */\r
  79 #define CRTC_ADDR          0x3d4   /* Base port of the CRT Controller (color) */\r
  80 \r
  81 #define SEQU_ADDR          0x3c4   /* Base port of the Sequencer */\r
  82 #define GRAC_ADDR          0x3ce   /* Base port of the Graphics Controller */\r
  83 #define STATUS_ADDR     0x3DA\r
  84 \r
  85 unsigned char *RowsX[600];\r
  86 unsigned char write_plane, read_plane;\r
  87 unsigned short text_mask[16] = { 0x0002, 0x0102, 0x0202, 0x0302,\r
  88                                  0x0402, 0x0502, 0x0602, 0x0702,\r
  89                                  0x0802, 0x0902, 0x0A02, 0x0B02,\r
  90                                  0x0C02, 0x0D02, 0x0E02, 0x0F02 };\r
  91 \r
  92 \r
  93 /*\r
  94  * Make a far pointer to the VGA graphics buffer segment.  Your compiler\r
  95  * might not have the MK_FP macro, but you'll figure something out.\r
  96  */\r
  97 byte *vga = (byte *) MK_FP(0xA000, 0);\r
  98 \r
  99 \r
 100 /*\r
 101  * width and height should specify the mode dimensions.  widthBytes\r
 102  * specify the width of a line in addressable bytes.\r
 103  */\r
 104 unsigned width, height, widthBytes;\r
 105 \r
 106 /*\r
 107  * actStart specifies the start of the page being accessed by\r
 108  * drawing operations.  visStart specifies the contents of the Screen\r
 109  * Start register, i.e. the start of the visible page.\r
 110  */\r
 111 unsigned actStart, visStart;\r
 112 \r
 113 /*\r
 114  * set320x200x256_X()\r
 115  *        sets mode 13h, then turns it into an unchained (planar), 4-page\r
 116  *        320x200x256 mode.\r
 117  */\r
 118 void set320x200x256_X(void)\r
 119                 {\r
 120                 union REGS r;\r
 121 \r
 122                 /* Set VGA BIOS mode 13h: */\r
 123                 r.x.ax = 0x0013;\r
 124                 int86(0x10, &r, &r);\r
 125 \r
 126                 /* Turn off the Chain-4 bit (bit 3 at index 4, port 0x3c4): */\r
 127                 outpw(SEQU_ADDR, 0x0604);\r
 128 \r
 129                 /* Turn off word mode, by setting the Mode Control register\r
 130                 of the CRT Controller (index 0x17, port 0x3d4): */\r
 131                 outpw(CRTC_ADDR, 0xE317);\r
 132 \r
 133                 /* Turn off doubleword mode, by setting the Underline Location\r
 134                    register (index 0x14, port 0x3d4): */\r
 135                 outpw(CRTC_ADDR, 0x0014);\r
 136 \r
 137                 /* Clear entire video memory, by selecting all four planes, then\r
 138                    writing 0 to entire segment. */\r
 139                 outpw(SEQU_ADDR, 0x0F02);\r
 140                 memset(vga+1, 0, 0xffff); /* stupid size_t exactly 1 too small */\r
 141                 vga[0] = 0;\r
 142 \r
 143                 /* Update the global variables to reflect dimensions of this\r
 144                    mode.  This is needed by most future drawing operations. */\r
 145                 width              = 320;\r
 146                 height  = 200;\r
 147 \r
 148                 /* Each byte addresses four pixels, so the width of a scan line\r
 149                    in *bytes* is one fourth of the number of pixels on a line. */\r
 150                 widthBytes = width / 4;\r
 151 \r
 152                 /* By default we want screen refreshing and drawing operations\r
 153                    to be based at offset 0 in the video segment. */\r
 154                 actStart = visStart = 0;\r
 155 \r
 156                 /*\r
 157 --------------------\r
 158 HORIZONTAL SCROLLING\r
 159 --------------------\r
 160 Horizontal scrolling is essentially the same as vertical scrolling, all\r
 161 you do is increment or decrement the VGA offset register by 1 instead of\r
 162 80 as with vertical scrolling.\r
 163 \r
 164 However, horizontal scrolling is complicated by two things\r
 165 \r
 166   1. Incrementing the offset register by one actually scrolls by FOUR\r
 167      pixels (and there are FOUR planes on the VGA, what a coincidence)\r
 168 \r
 169   2. You can't draw the image off the screen and then scroll it on\r
 170      because of the way the VGA wraps to the next row every 80 bytes\r
 171      (80 bytes * 4 planes = 320 pixels), if you tried it, you would\r
 172      actually be drawing to the other side of the screen (which is\r
 173      entirely visible)\r
 174 \r
 175 I'll solve these problems one at a time.\r
 176 \r
 177 Firstly, to get the VGA to scroll by only one pixel you use the horizontal\r
 178 pixel panning (HPP) register. This register resides at\r
 179 \r
 180   PORT:     3C0H\r
 181   INDEX:    13h\r
 182 \r
 183 and in real life, you use it like this\r
 184 \r
 185 ----------------- Pixel Panning ---------------\r
 186 IN PORT 3DAH (this clears an internal\r
 187   flip-flop of the VGA)\r
 188 OUT 13H TO PORT 3C0H\r
 189 OUT value TO PORT 3C0H (where "value" is the\r
 190   number of pixels to offset)\r
 191 -----------------------------------------------\r
 192 */\r
 193 \r
 194 //mxSetVirtualScreen(480,360);\r
 195                 }\r
 196 \r
 197 /*\r
 198  * setActiveStart() tells our graphics operations which address in video\r
 199  * memory should be considered the top left corner.\r
 200  */\r
 201 void setActiveStart(unsigned offset)\r
 202                 {\r
 203                 actStart = offset;\r
 204                 }\r
 205 \r
 206 /*\r
 207  * setVisibleStart() tells the VGA from which byte to fetch the first\r
 208  * pixel when starting refresh at the top of the screen.  This version\r
 209  * won't look very well in time critical situations (games for\r
 210  * instance) as the register outputs are not synchronized with the\r
 211  * screen refresh.  This refresh might start when the high byte is\r
 212  * set, but before the low byte is set, which produces a bad flicker.\r
 213  */\r
 214 void setVisibleStart(unsigned offset)\r
 215                 {\r
 216                 visStart = offset;\r
 217                 outpw(CRTC_ADDR, 0x0C);          /* set high byte */\r
 218                 outpw(CRTC_ADDR+1, visStart >> 8);\r
 219                 outpw(CRTC_ADDR, 0x0D);          /* set low byte */\r
 220                 outpw(CRTC_ADDR+1, visStart & 0xff);\r
 221                 }\r
 222 \r
 223 /*\r
 224  * setXXXPage() sets the specified page by multiplying the page number\r
 225  * with the size of one page at the current resolution, then handing the\r
 226  * resulting offset value over to the corresponding setXXXStart()\r
 227  * function.  The first page is number 0.\r
 228  */\r
 229 void setActivePage(int page)\r
 230                 {\r
 231                 setActiveStart(page * widthBytes * height);\r
 232                 }\r
 233 \r
 234 void setVisiblePage(int page)\r
 235                 {\r
 236                 setVisibleStart(page * widthBytes * height);\r
 237                 }\r
 238 \r
 239 void putPixel_X(int x, int y, byte color)\r
 240                 {\r
 241                 /* Each address accesses four neighboring pixels, so set\r
 242                    Write Plane Enable according to which pixel we want\r
 243                    to modify.  The plane is determined by the two least\r
 244                    significant bits of the x-coordinate: */\r
 245                 outp(0x3c4, 0x02);\r
 246                 outp(0x3c5, 0x01 << (x & 3));\r
 247 \r
 248                 /* The offset of the pixel into the video segment is\r
 249                    offset = (width * y + x) / 4, and write the given\r
 250                    color to the plane we selected above.  Heed the active\r
 251                    page start selection. */\r
 252                 vga[(unsigned)(widthBytes * y) + (x / 4) + actStart] = color;\r
 253 \r
 254                 }\r
 255 \r
 256 byte getPixel_X(int x, int y)\r
 257                 {\r
 258                 /* Select the plane from which we must read the pixel color: */\r
 259                 outpw(GRAC_ADDR, 0x04);\r
 260                 outpw(GRAC_ADDR+1, x & 3);\r
 261 \r
 262                 return vga[(unsigned)(widthBytes * y) + (x / 4) + actStart];\r
 263 \r
 264                 }\r
 265 \r
 266 void set320x240x256_X(void)\r
 267                 {\r
 268                 /* Set the unchained version of mode 13h: */\r
 269                 set320x200x256_X();\r
 270 \r
 271                 /* Modify the vertical sync polarity bits in the Misc. Output\r
 272                    Register to achieve square aspect ratio: */\r
 273                 outp(0x3C2, 0xE3);\r
 274 \r
 275                 /* Modify the vertical timing registers to reflect the increased\r
 276                    vertical resolution, and to center the image as good as\r
 277                    possible: */\r
 278                 outpw(0x3D4, 0x2C11);              /* turn off write protect */\r
 279                 outpw(0x3D4, 0x0D06);              /* vertical total */\r
 280                 outpw(0x3D4, 0x3E07);              /* overflow register */\r
 281                 outpw(0x3D4, 0xEA10);              /* vertical retrace start */\r
 282                 outpw(0x3D4, 0xAC11);              /* vertical retrace end AND wr.prot */\r
 283                 outpw(0x3D4, 0xDF12);              /* vertical display enable end */\r
 284                 outpw(0x3D4, 0xE715);              /* start vertical blanking */\r
 285                 outpw(0x3D4, 0x0616);              /* end vertical blanking */\r
 286 \r
 287                 /* Update mode info, so future operations are aware of the\r
 288                    resolution */\r
 289                 height = 240;\r
 290 \r
 291                 }\r
 292 \r
 293 \r
 294 /*-----------XXXX-------------*/\r
 295 \r
 296 /////////////////////////////////////////////////////////////////////////////\r
 297 //                                                                         //\r
 298 // WaitRetrace() - This waits until you are in a Verticle Retrace.         //\r
 299 //                                                                         //\r
 300 /////////////////////////////////////////////////////////////////////////////\r
 301 void wait_for_retrace(void)\r
 302 {\r
 303     while (!(inp(STATUS_ADDR) & 0x08));\r
 304 }\r
 305 \r
 306 /*tile*/\r
 307 //king_crimson's code\r
 308 void putColorBox_X(int x, int y, int w, int h, byte color) {\r
 309         outp(0x3c4, 0x02);\r
 310 \r
 311         int curx, cury;\r
 312         unsigned drawptr;\r
 313         for (curx=x; curx<(x+w); curx++) {\r
 314                 outp(0x3c5, 0x01 << (curx & 3));\r
 315                 drawptr = (unsigned)(widthBytes * y) + (curx / 4) + actStart;\r
 316                 for (cury=0; cury<h; cury++) {\r
 317                         vga[drawptr] = color;\r
 318                         drawptr += widthBytes;\r
 319                 }\r
 320         }\r
 321 }\r
 322 \r
 323 void vScroll(int rows)\r
 324 {\r
 325         // Scrolling = current start + (rows * bytes in a row)\r
 326         setVisibleStart(visStart + (rows * width));\r
 327 }\r
 328 \r
 329 void scrolly(int bongy)\r
 330 {\r
 331         int boingy=0;\r
 332         if(bongy<0)\r
 333                 boingy=-1;\r
 334         else if(bongy>0)\r
 335                 boingy=1;\r
 336 \r
 337         for(int ti=0;ti<TILEWH;ti++)\r
 338         {\r
 339                 delay(1);\r
 340                 vScroll(boingy);\r
 341         }\r
 342 }\r
 343 \r
 344 //king_crimson's code\r
 345 void hScroll(int Cols) {\r
 346         wait_for_retrace();\r
 347         outp(0x3C0, 0x13);\r
 348         outp(0x3C0, Cols & 3);\r
 349         outp(0x3D4, 0x13);\r
 350         outp(0x3D5, Cols >> 2);\r
 351         outp(0x3D4, Cols);\r
 352         //setVisibleStart(visStart + (Cols * height));\r
 353         setVisibleStart(visStart + (Cols * width));\r
 354 }\r
 355 \r
 356 /*To implement smooth horizontal scrolling, you would do the following:\r
 357 -------------- Horizontal Scrolling ------------\r
 358 FOR X = 0 TO 319 DO\r
 359   SET HPP TO ( X MOD 4 )\r
 360   SET VGA OFFSET TO ( X/4 )\r
 361 END FOR\r
 362 ------------------------------------------------\r
 363 \r
 364 Okay, no problem at all (although I think you might have to fiddle\r
 365 around with the HPP a bit to get it right...try different values and\r
 366 see what works :).\r
 367 \r
 368 So, the next problem is with drawing the images off the screen where\r
 369 they aren't visible and then scrolling them on!!! As it turns out,\r
 370 there's yet ANOTHER register to accomplish this. This one's called the\r
 371 offset register (no, not the one I was talking about before, that one\r
 372 was actually the "start address" register) and it's at\r
 373 \r
 374   PORT:     3D4H/3D5H\r
 375   OFFSET:   13H\r
 376 \r
 377 and here's how to use it\r
 378 \r
 379 -------------- Offset Register ---------------\r
 380 OUT 13H TO PORT 3D4H\r
 381 OUT value TO PORT 3D5H\r
 382 ----------------------------------------------\r
 383 \r
 384 Now, what my VGA reference says is that this register holds the number\r
 385 of bytes (not pixels) difference between the start address of each row.\r
 386 So, in X-mode it normally contains the value 80 (as we remember,\r
 387 80 bytes * 4 planes = 320 pixels). This register does not affect the\r
 388 VISIBLE width of the display, only the difference between addresses on\r
 389 each row.\r
 390 \r
 391 When we scroll horizontally, we need a little bit of extra working space\r
 392 so we can draw off the edge of the screen.\r
 393 \r
 394 Perhaps a little diagram will clarify it. The following picture is of a\r
 395 standard X-mode addressing scheme with the OFFSET register set to 80.\r
 396 \r
 397       ROW    OFFSET\r
 398       0         0 ========================\r
 399       1        80 [                      ]\r
 400       2       160 [                      ]\r
 401       ..       .. [       VISIBLE        ]\r
 402                   [        SCREEN        ]\r
 403                   [                      ]\r
 404                   [                      ]\r
 405       ..       .. [                      ]\r
 406       199   15920 ========================\r
 407 \r
 408 and the next diagram is of a modified addressing scheme with the OFFSET\r
 409 register set to 82 (to give us 4 extra pixels on each side of the screen)\r
 410 \r
 411 ROW    OFFSET\r
 412 0         0 ------========================------\r
 413 1        82 |   V [                      ]   V |\r
 414 2       164 |   I [                      ]   I |\r
 415 ..       .. | N S [      VISIBLE         ] N S |\r
 416             | O I [       SCREEN         ] O I |\r
 417             | T B [                      ] T B |\r
 418             |   L [                      ]   L |\r
 419 ..       .. |   E [                      ]   E |\r
 420 199   16318 ------========================------\r
 421 \r
 422 Beautiful!!!\r
 423 \r
 424 As with vertical scrolling, however, you still have the problem of when\r
 425 you reach the bottom of page 4...and it's fixed in the same manner.\r
 426 \r
 427 I haven't actually managed to get infinite horizontal scrolling working,\r
 428 but the method I have just stated will give you a horizontal scrolling\r
 429 range of over 200 screens!!!! So if you need more (which is extremely\r
 430 unlikely), figure it out yourself.\r
 431 \r
 432 \r
 433 ------------------\r
 434 COMBINED SCROLLING\r
 435 ------------------\r
 436 To do both horizontal and vertical scrolling, all you have to do is combine\r
 437 the two methods with a few little extras (it's always the way isn't it).\r
 438 \r
 439 You have to start off with the original screen on the current page and the\r
 440 next page as well. When you scroll horizontally, you have to draw the edge\r
 441 that's coming in to the screen to BOTH pages (that means you'll be drawing\r
 442 the incoming edge twice, once for each page). You do this so that when you\r
 443 have scrolled vertically down through a complete page, you can jump back\r
 444 to the first page and it will (hopefully) have an identical copy, and you\r
 445 can then continue scrolling again.\r
 446 \r
 447 I'm sorry about this being so confusing but it's a bit difficult to explain.\r
 448 \r
 449 \r
 450 */\r
 451 int loadfontX(char *fname)\r
 452 {\r
 453         FILE *fp;\r
 454 \r
 455         fp = fopen(fname, "rb");\r
 456 \r
 457         if (fp == NULL) {\r
 458                 return 0;\r
 459         } else {\r
 460                 fread(Xfont, 8, 256, fp);\r
 461                 fclose(fp);\r
 462                 return 1;\r
 463         }\r
 464 }\r
 465 \r
 466 void putchX(cord x, cord y, char c, byte color)\r
 467 {\r
 468         int i;\r
 469         byte *vga_ptr;\r
 470         byte *font_ptr;\r
 471         byte temp;\r
 472 \r
 473         // 8x8 font\r
 474         vga_ptr = RowsX[y << 3] + (x << 1) + actStart;\r
 475         write_plane = -1;\r
 476 \r
 477         font_ptr = Xfont + (c << 3);\r
 478 \r
 479         i=8;\r
 480         while (i--) {\r
 481                 temp = *font_ptr++;\r
 482                 outpw(SEQU_ADDR, text_mask[temp & 0x0F]);\r
 483                 *vga_ptr++ = color;\r
 484 \r
 485                 outpw(SEQU_ADDR, text_mask[temp >> 4]);\r
 486                 *vga_ptr-- = color;\r
 487                 vga_ptr += widthBytes;\r
 488         }\r
 489 }\r
 490 \r
 491 void putstringX(cord x, cord y, char *str, byte color)\r
 492 {\r
 493         int i, skip;\r
 494         byte *vga_ptr;\r
 495         byte *font_ptr;\r
 496         byte c, temp;\r
 497 \r
 498         // 8x8 font\r
 499         vga_ptr = RowsX[y << 3] + (x << 1) + actStart;\r
 500         write_plane = -1;\r
 501 \r
 502         skip = 2 - (widthBytes << 3);\r
 503 \r
 504         while (c = *str++) {\r
 505                 font_ptr = Xfont + (c << 3);\r
 506 \r
 507                 i=8;\r
 508                 while (i--) {\r
 509                         temp = *font_ptr++;\r
 510                         outpw(SEQU_ADDR, text_mask[temp & 0x0F]);\r
 511                         *vga_ptr++ = color;\r
 512 \r
 513                         outpw(SEQU_ADDR, text_mask[temp >> 4]);\r
 514                         *vga_ptr-- = color;\r
 515                         vga_ptr += widthBytes;\r
 516                 }\r
 517 \r
 518                 vga_ptr += skip;\r
 519         }\r
 520 }\r
 521 \r
 522 /////////////////////////////////////////////////////////////////////////////\r
 523 //                                                                         //\r
 524 // setvideo() - This function Manages the video modes                                     //\r
 525 //                                                                         //\r
 526 /////////////////////////////////////////////////////////////////////////////\r
 527 void setvideo(/*byte mode, */int vq){\r
 528                 union REGS in, out;\r
 529 \r
 530                 if(!vq){ // deinit the video\r
 531                                 // change to the video mode we were in before we switched to mode 13h\r
 532                                 //mxSetMode( MX_TEXT );\r
 533                                 //mxTerm();\r
 534                                 in.h.ah = 0x00;\r
 535                                 in.h.al = old_mode;\r
 536                                 int86(0x10, &in, &out);\r
 537 \r
 538                 }else if(vq == 1){ // init the video\r
 539                                 // get old video mode\r
 540                                 in.h.ah = 0xf;\r
 541                                 int86(0x10, &in, &out);\r
 542                                 old_mode = out.h.al;\r
 543 \r
 544                                 // enter mode\r
 545                                 //mxInit();\r
 546                                 //mxSetMode( MX_320x200 );\r
 547                                 //mxSetVirtualScreen( 640, 400 );\r
 548                                 set320x240x256_X();\r
 549                                 //mxSetMode(MX_320x240);\r
 550                                 //mxSetVirtualScreen(560,420);\r
 551                                 //mxSetVirtualScreen((640-TILEWH),(480-TILEWH));\r
 552                                 //mxSetClip( TRUE );\r
 553                 }\r
 554 }\r
 555 \r
 556 /////////////////////////////////////////////////////////////////////////////\r
 557 //                                                                                                                                               //\r
 558 // cls() - This clears the screen to the specified color, on the VGA or on //\r
 559 //               the Virtual screen.                                                                                     //\r
 560 //                                                                                                                                               //\r
 561 /////////////////////////////////////////////////////////////////////////////\r
 562 void cls(byte color, byte *Where){\r
 563                 _fmemset(Where, color, width*(height*17));\r
 564 }\r
 565 \r
 566 //color \82Ä\82·\82Æ\r
 567 int colortest(){\r
 568                 if(gq < NUM_COLORS){\r
 569                                 cls(gq, vga);\r
 570                                 gq++;\r
 571                 }else gq = 0;\r
 572                 return gq;\r
 573 }\r
 574 \r
 575 //color \82Ä\82·\82Æ\r
 576 int colorz(){\r
 577                 if(gq < HGQ){\r
 578 //----            cls(gq, vaddr);\r
 579                                 cls(gq, vga);\r
 580                                 gq++;\r
 581                 }else gq = LGQ;\r
 582                 return gq;\r
 583 }\r
 584 \r
 585 //slow spectrum down\r
 586 void ssd(int svq){\r
 587                 if(sy < height+1){\r
 588                                 if(sx < width+1){\r
 589                                                 //plotpixel(xx, yy, coor, vga);\r
 590                                                 //ppf(sx, sy, coor, vga);\r
 591                                                 putPixel_X(sx, sy, coor);\r
 592                                                 //printf("%d %d %d %d\n", sx, sy, svq, coor);\r
 593                                                 sx++;\r
 594                                 }else sx = 0;\r
 595                                 if(sx == width){\r
 596                                                 sy++;\r
 597                                                 if(svq == 7) coor++;\r
 598                                                 if(sy == height && svq == 8) coor = rand()%NUM_COLORS;\r
 599                                 }\r
 600                 }else sy = 0;\r
 601 }\r
 602 \r
 603 /*-----------ding-------------*/\r
 604 int ding(int q){\r
 605 \r
 606 //      if(yy<height){\r
 607                 setActivePage(0);\r
 608                 setVisiblePage(0);\r
 609 /*      }\r
 610         if((height)<yy<(height*2)){\r
 611                 setActivePage(1);\r
 612                 setVisiblePage(1);\r
 613         }\r
 614         if((height*2)<yy<(height*3)){\r
 615                 setActivePage(2);\r
 616                 setVisiblePage(2);\r
 617         }*/\r
 618                 int d3y;\r
 619 \r
 620 //++++  if(q <= 4 && q!=2 && gq == BONK-1) coor = rand()%HGQ;\r
 621                 if((q == 2\r
 622                 ||q==4\r
 623                 ||q==16\r
 624                 ) && gq == BONK){\r
 625                                                 if(coor < HGQ && coor < LGQ) coor = LGQ;\r
 626                                                 if(coor < HGQ-1){\r
 627                                                                 coor++;\r
 628                                 }else{ coor = LGQ;\r
 629                                                 bakax = rand()%3; bakay = rand()%3;\r
 630                                 }\r
 631                 }\r
 632 \r
 633                 if(q==8){ colorz(); return gq; }else\r
 634                 if(q==10){ ssd(q); /*printf("%d\n", coor);*/ }else\r
 635                 if(q==5){ colortest(); return gq; }else\r
 636                 if(q==11){ colorz(); delay(100); return gq; }\r
 637                 if(q==6){\r
 638                                 coor = rand()%NUM_COLORS;\r
 639 //----            cls(coor, vaddr);\r
 640                                 cls(coor, vga);\r
 641                                 //updatevbuff();\r
 642                 }\r
 643 \r
 644                 if(q==7||q==9){\r
 645                                 if(gq < HGQ){\r
 646                                                 if(q == 7) ssd(q);\r
 647                                                 if(q == 9){ ssd(q); coor++; }\r
 648                                                 gq++;\r
 649                                 }else gq = LGQ;\r
 650                 }\r
 651                 if((q<5 && gq<BONK) || (q==16 && gq<BONK)){ // the number variable make the colors more noticable\r
 652                                 if(q==1){\r
 653                                                 if(xx==width){bakax=0;}\r
 654                                                 if(xx==0){bakax=1;}\r
 655                                                 if(yy==height){bakay=0;}\r
 656                                                 if(yy==0){bakay=1;}\r
 657                                 }else if(q==3){\r
 658                                                 if(xx!=width||yy!=height){\r
 659                                                                 if(xx==0){bakax=1;bakay=-1;d3y=1;}\r
 660                                                                 if(yy==0){bakax=1;bakay=0;d3y=1;}\r
 661                                                                 if(xx==width){bakax=-1;bakay=-1;d3y=1;}\r
 662                                                                 if(yy==height){bakax=1;bakay=0;d3y=1;}\r
 663                                                 }else if(xx==width&&yy==height) xx=yy=0;\r
 664                                 }\r
 665                                 if(q==3){\r
 666                                                 if(d3y){\r
 667                                                                 if(bakay<0){\r
 668                                                                                 yy--;\r
 669                                                                                 d3y--;\r
 670                                                                 }else\r
 671                                                                 if(bakay>0){\r
 672                                                                                 yy++;\r
 673                                                                                 d3y--;\r
 674                                                                 }\r
 675                                                 }\r
 676                                                 if(bakax<0){\r
 677                                                                 xx--;\r
 678                                                 }else\r
 679                                                 if(bakax>0){\r
 680                                                                 xx++;\r
 681                                                 }\r
 682                                 }else{\r
 683                                                 if(q==16)\r
 684                                                 {\r
 685                                                                 if(!bakax){\r
 686                                                                         xx--;\r
 687                                                                 }else if(bakax>0){\r
 688                                                                         xx++;\r
 689                                                                 }\r
 690                                                                 if(!bakay){\r
 691                                                                         yy--;\r
 692                                                                 }else if(bakay>0){\r
 693                                                                         yy++;\r
 694                                                                 }\r
 695                                                 }else{\r
 696                                                                 if(!bakax){\r
 697                                                                         xx-=TILEWH;\r
 698 //                                                                      xx--;\r
 699                                                                 }else if(bakax>1){\r
 700                                                                         xx+=TILEWH;\r
 701 //                                                                      xx++;\r
 702                                                                 }\r
 703                                                                 if(!bakay){\r
 704                                                                         yy-=TILEWH;\r
 705 //                                                                      yy--;\r
 706                                                                 }else if(bakay>1){\r
 707                                                                         yy+=TILEWH;\r
 708 //                                                                      yy++;\r
 709                                                                 }\r
 710                                                 }\r
 711                                 }\r
 712                                 // fixer\r
 713 //                              if(q!=16){\r
 714 //if(q!=16)\r
 715 //                                              if(xx<0) xx=(width-TILEWH);\r
 716 //                                              if(yy<0) yy=(height-TILEWH);\r
 717 //                                              if(xx>(width-TILEWH)) xx=0;\r
 718 //                                              if(yy>(height-TILEWH)) yy=0;\r
 719 //                              }\r
 720 \r
 721 //interesting effects\r
 722                                 if(q==16)\r
 723                                 {\r
 724                                 int tx=0,ty=0;\r
 725                                 tx+=xx+16;\r
 726                                 ty+=yy+16;\r
 727                                 putPixel_X(tx, ty, coor);\r
 728                                 //drawrect(tx, ty, tx+TILEWH, ty+TILEWH, coor);\r
 729                                 //printf("%d %d %d %d %d %d\n", xx, yy, tx, ty, TILEWH);\r
 730 \r
 731                                 // plot the pixel\r
 732 //----            ppf(xx, yy, coor, vga);\r
 733                                 }else /*if(xx>=0 && xx<width && yy>=0 && yy<(height*3))*/{\r
 734                                         putColorBox_X(xx, yy, TILEWH, TILEWH, coor);\r
 735 //++++0000\r
 736 //                                      putPixel_X(xx, yy, coor);\r
 737                                 } \r
 738 \r
 739 //----            if(q==2) ppf(rand()%, rand()%height, 0, vga);\r
 740 //                              if(q==2) putColorBox_X(rand()%width, rand()%(height*3), TILEWH, TILEWH, 0);\r
 741 //++++0000\r
 742                                 if(q==2) putPixel_X(rand()%width, rand()%(height*3), 0);\r
 743                                 if(q==16) putPixel_X(rand()%width, rand()%(height*3), 0);\r
 744                                 if(q==2||q==4||q==16){ bakax = rand()%3; bakay = rand()%3; }\r
 745                                 gq++;\r
 746 //if(xx<0||xx>320||yy<0||yy>(height*3))\r
 747 //        printf("%d %d %d %d %d %d\n", xx, yy, coor, bakax, bakay, getPixel_X(xx,yy));\r
 748 //        printf("%d\n", getPixel_X(xx,yy));\r
 749 //0000\r
 750 //        drawText(0, 0, 15, getPixel_X(xx,yy));\r
 751                 }else gq = LGQ;\r
 752                 return gq;\r
 753 }\r
 754 \r
 755 \r
 756 /*\r
 757  * The library testing routines follows below.\r
 758  */\r
 759 \r
 760 \r
 761 #ifdef TESTING\r
 762 \r
 763 #include <stdio.h>\r
 764 #include <conio.h>\r
 765 \r
 766 void doTest(void)\r
 767                 {\r
 768                 int p, x, y, pages;\r
 769 \r
 770                 /* This is the way to calculate the number of pages available. */\r
 771                 pages = 65536L/(widthBytes*height); // apparently this takes the A000 address\r
 772 //              if(height==240) pages++;\r
 773 \r
 774 //              printf("%d\n", pages);\r
 775 \r
 776                 for (p = 0; p <= pages; ++p)\r
 777                                 {\r
 778                                 setActivePage(p);\r
 779 \r
 780                                 /* On each page draw a single colored border, and dump the palette\r
 781                                    onto a small square about the middle of the page. */\r
 782 \r
 783                                    //{\r
 784                                                 for (x = 0; x <= width; ++x)\r
 785                                                                 {\r
 786                                                                 putPixel_X(x, 0, p+1);\r
 787                                                                 if(p!=pages) putPixel_X(x, height-1, p+1);\r
 788                                                                                 else if(height==240) putPixel_X(x, 99-1, p+1);\r
 789                                                                 }\r
 790 \r
 791                                                 for (y = 0; y <= height; ++y)\r
 792                                                                 {\r
 793                                                                 putPixel_X(0, y, p+1);\r
 794                                                                 if(p!=pages) putPixel_X(width-1, y, p+1);\r
 795                                                                                 else if(height==240) putPixel_X(width-1, y, p+1);\r
 796                                                                 }\r
 797 \r
 798                                                 for (x = 0; x < TILEWH; ++x)\r
 799                                                                 for (y = 0; y < TILEWH; ++y)\r
 800                                                                                 putPixel_X(x+(p+2)*16, y+(p+2)*TILEWH, x + y*TILEWH);\r
 801                                                 //}\r
 802 \r
 803                                 }\r
 804 \r
 805                 /* Each pages will now contain a different image.  Let the user cycle\r
 806                    through all the pages by pressing a key. */\r
 807                 for (p = 0; p < pages; ++p)\r
 808                                 {\r
 809                                 setVisiblePage(p);\r
 810                                 getch();\r
 811                                 }\r
 812 \r
 813                 }\r
 814 \r
 815 /*\r
 816  * Library test (program) entry point.\r
 817  */\r
 818 \r
 819 int main(void)\r
 820                 {\r
 821                 int key,d,x,y;\r
 822                 //short int temp;\r
 823                 // main variables\r
 824                 d=1; // switch variable\r
 825                 key=4; // default screensaver number\r
 826                 x=0;\r
 827                 y=0;\r
 828 //        puts("First, have a look at the 320x200 mode.  I will draw some rubbish");\r
 829 //        puts("on all of the four pages, then let you cycle through them by");\r
 830 //        puts("hitting a key on each page.");\r
 831 //        puts("Press a key when ready...");\r
 832 //        getch();\r
 833 \r
 834 //        doTest();\r
 835 \r
 836 //        puts("Then, check out Mode X, 320x240 with 3 (and a half) pages.");\r
 837 //        puts("Press a key when ready...");\r
 838 //        getch();\r
 839 \r
 840 //++++0000\r
 841                 setvideo(1);\r
 842                 /*temp = loadfontX("vga8x8.fnt");\r
 843 \r
 844                 if (temp) {\r
 845                         putstringX(0, 0, "bakapi!", 2);\r
 846                 }\r
 847                 getch();*/\r
 848 // screen savers\r
 849 \r
 850 /*while(d!=0){ // on!\r
 851                                 if(!kbhit()){ // conditions of screen saver\r
 852                                                 ding(key);\r
 853                                 }else{\r
 854                                                 setvideo(0);\r
 855                                                 // user imput switch\r
 856                                                 printf("Enter 1, 2, 3, 4, or 6 to run a screensaver, or enter 5 to quit.\n", getch());  // prompt the user\r
 857                                                 scanf("%d", &key);\r
 858                                                 //if(key==3){xx=yy=0;} // crazy screen saver wwww\r
 859                                                 if(key==5) d=0;\r
 860                                                 setvideo(1);\r
 861                                 }\r
 862                 }*/ // else off\r
 863                 while(!kbhit()){ // conditions of screen saver\r
 864                         ding(4);\r
 865                 }\r
 866                 //end of screen savers\r
 867                 doTest();\r
 868 //              getch();\r
 869 \r
 870                 while(!kbhit()){ // conditions of screen saver\r
 871 //                      hScroll(1);\r
 872 //                      scrolly(1);\r
 873 //                      vScroll(1);\r
 874 //                      delay(100);
 875                         /*mxSetVirtualScreen(320,240*2);\r
 876                         for(int i=0;i<TILEWH;i++){\r
 877                                 mxPan(x,y);\r
 878                                 //mxWaitRetrace();\r
 879                                 y++;\r
 880                         }*/
 881                         mxSetVirtualScreen(320*2,240);\r
 882                         for(int i=0;i<TILEWH;i++){\r
 883                                 mxPan(x,y);\r
 884                                 mxWaitRetrace();\r
 885                                 x++;\r
 886                         }
 887                 //delay(100);\r
 888                 }\r
 889                 setvideo(0);\r
 890                 printf("wwww\n%dx%d\n", width,height);\r
 891                 printf("[%d]\n", mxGetVersion());\r
 892                 puts("where to next?  It's your move! wwww");\r
 893                 printf("bakapi ver. 1.04.09.04\nis made by sparky4\81i\81\86\83Ö\81\85\81j feel free to use it ^^\nLicence: GPL v2\n");\r
 894                 return 0;\r
 895                 }\r
 896 \r
 897 #endif\r