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 #include "lib\x\modex.h"\r
  61 \r
  62 int old_mode;\r
  63 //color \82Ä\82·\82Æ\r
  64 int gq = LGQ;\r
  65 //\82Ä\82·\82Æ\r
  66 int q = 0;\r
  67 int bakax = 0, bakay = 0;\r
  68 int xx = rand()&0%320, yy = rand()&0%240, sx = 0, sy = 0;\r
  69 byte coor;\r
  70 \r
  71 /*\r
  72  * Comment out the following #define if you don't want the testing main()\r
  73  * to be included.\r
  74  */\r
  75 #define TESTING\r
  76 \r
  77 /*\r
  78  * Define the port addresses of some VGA registers.\r
  79  */\r
  80 #define CRTC_ADDR          0x3d4   /* Base port of the CRT Controller (color) */\r
  81 \r
  82 #define SEQU_ADDR          0x3c4   /* Base port of the Sequencer */\r
  83 #define GRAC_ADDR          0x3ce   /* Base port of the Graphics Controller */\r
  84 \r
  85 \r
  86 /*\r
  87  * Make a far pointer to the VGA graphics buffer segment.  Your compiler\r
  88  * might not have the MK_FP macro, but you'll figure something out.\r
  89  */\r
  90 byte *vga = (byte *) MK_FP(0xA000, 0);\r
  91 \r
  92 //fontAddr = getFont();\r
  93 \r
  94 /*\r
  95  * width and height should specify the mode dimensions.  widthBytes\r
  96  * specify the width of a line in addressable bytes.\r
  97  */\r
  98 unsigned width, height, widthBytes;\r
  99 \r
 100 /*\r
 101  * actStart specifies the start of the page being accessed by\r
 102  * drawing operations.  visStart specifies the contents of the Screen\r
 103  * Start register, i.e. the start of the visible page.\r
 104  */\r
 105 unsigned actStart, visStart;\r
 106 \r
 107 /*\r
 108  * set320x200x256_X()\r
 109  *        sets mode 13h, then turns it into an unchained (planar), 4-page\r
 110  *        320x200x256 mode.\r
 111  */\r
 112 void set320x200x256_X(void)\r
 113                 {\r
 114                 union REGS r;\r
 115 \r
 116                 /* Set VGA BIOS mode 13h: */\r
 117                 r.x.ax = 0x0013;\r
 118                 int86(0x10, &r, &r);\r
 119 \r
 120                 /* Turn off the Chain-4 bit (bit 3 at index 4, port 0x3c4): */\r
 121                 outpw(SEQU_ADDR, 0x0604);\r
 122 \r
 123                 /* Turn off word mode, by setting the Mode Control register\r
 124                 of the CRT Controller (index 0x17, port 0x3d4): */\r
 125                 outpw(CRTC_ADDR, 0xE317);\r
 126 \r
 127                 /* Turn off doubleword mode, by setting the Underline Location\r
 128                    register (index 0x14, port 0x3d4): */\r
 129                 outpw(CRTC_ADDR, 0x0014);\r
 130 \r
 131                 /* Clear entire video memory, by selecting all four planes, then\r
 132                    writing 0 to entire segment. */\r
 133                 outpw(SEQU_ADDR, 0x0F02);\r
 134                 memset(vga+1, 0, 0xffff); /* stupid size_t exactly 1 too small */\r
 135                 vga[0] = 0;\r
 136 \r
 137                 /* Update the global variables to reflect dimensions of this\r
 138                    mode.  This is needed by most future drawing operations. */\r
 139                 width              = 320;\r
 140                 height  = 200;\r
 141 \r
 142                 /* Each byte addresses four pixels, so the width of a scan line\r
 143                    in *bytes* is one fourth of the number of pixels on a line. */\r
 144                 widthBytes = width / 4;\r
 145 \r
 146                 /* By default we want screen refreshing and drawing operations\r
 147                    to be based at offset 0 in the video segment. */\r
 148                 actStart = visStart = 0;\r
 149 \r
 150                 /*\r
 151 --------------------\r
 152 HORIZONTAL SCROLLING\r
 153 --------------------\r
 154 Horizontal scrolling is essentially the same as vertical scrolling, all\r
 155 you do is increment or decrement the VGA offset register by 1 instead of\r
 156 80 as with vertical scrolling.\r
 157 \r
 158 However, horizontal scrolling is complicated by two things\r
 159 \r
 160   1. Incrementing the offset register by one actually scrolls by FOUR\r
 161      pixels (and there are FOUR planes on the VGA, what a coincidence)\r
 162 \r
 163   2. You can't draw the image off the screen and then scroll it on\r
 164      because of the way the VGA wraps to the next row every 80 bytes\r
 165      (80 bytes * 4 planes = 320 pixels), if you tried it, you would\r
 166      actually be drawing to the other side of the screen (which is\r
 167      entirely visible)\r
 168 \r
 169 I'll solve these problems one at a time.\r
 170 \r
 171 Firstly, to get the VGA to scroll by only one pixel you use the horizontal\r
 172 pixel panning (HPP) register. This register resides at\r
 173 \r
 174   PORT:     3C0H\r
 175   INDEX:    13h\r
 176 \r
 177 and in real life, you use it like this\r
 178 \r
 179 ----------------- Pixel Panning ---------------\r
 180 IN PORT 3DAH (this clears an internal\r
 181   flip-flop of the VGA)\r
 182 OUT 13H TO PORT 3C0H\r
 183 OUT value TO PORT 3C0H (where "value" is the\r
 184   number of pixels to offset)\r
 185 -----------------------------------------------\r
 186 */\r
 187 //\r
 188 //      inp(0x3DA);\r
 189 //      outp(0x3C0, 0x13);\r
 190 \r
 191                 }\r
 192 \r
 193 /*\r
 194  * setActiveStart() tells our graphics operations which address in video\r
 195  * memory should be considered the top left corner.\r
 196  */\r
 197 void setActiveStart(unsigned offset)\r
 198                 {\r
 199                 actStart = offset;\r
 200                 }\r
 201 \r
 202 /*\r
 203  * setVisibleStart() tells the VGA from which byte to fetch the first\r
 204  * pixel when starting refresh at the top of the screen.  This version\r
 205  * won't look very well in time critical situations (games for\r
 206  * instance) as the register outputs are not synchronized with the\r
 207  * screen refresh.  This refresh might start when the high byte is\r
 208  * set, but before the low byte is set, which produces a bad flicker.\r
 209  */\r
 210 void setVisibleStart(unsigned offset)\r
 211                 {\r
 212                 visStart = offset;\r
 213                 outpw(CRTC_ADDR, 0x0C);          /* set high byte */\r
 214                 outpw(CRTC_ADDR+1, visStart >> 8);\r
 215                 outpw(CRTC_ADDR, 0x0D);          /* set low byte */\r
 216                 outpw(CRTC_ADDR+1, visStart & 0xff);\r
 217                 }\r
 218 \r
 219 /*\r
 220  * setXXXPage() sets the specified page by multiplying the page number\r
 221  * with the size of one page at the current resolution, then handing the\r
 222  * resulting offset value over to the corresponding setXXXStart()\r
 223  * function.  The first page is number 0.\r
 224  */\r
 225 void setActivePage(int page)\r
 226                 {\r
 227                 setActiveStart(page * widthBytes * height);\r
 228                 }\r
 229 \r
 230 void setVisiblePage(int page)\r
 231                 {\r
 232                 setVisibleStart(page * widthBytes * height);\r
 233                 }\r
 234 \r
 235 void putPixel_X(int x, int y, byte color)\r
 236                 {\r
 237                 /* Each address accesses four neighboring pixels, so set\r
 238                    Write Plane Enable according to which pixel we want\r
 239                    to modify.  The plane is determined by the two least\r
 240                    significant bits of the x-coordinate: */\r
 241                 outp(0x3c4, 0x02);\r
 242                 outp(0x3c5, 0x01 << (x & 3));\r
 243 \r
 244                 /* The offset of the pixel into the video segment is\r
 245                    offset = (width * y + x) / 4, and write the given\r
 246                    color to the plane we selected above.  Heed the active\r
 247                    page start selection. */\r
 248                 vga[(unsigned)(widthBytes * y) + (x / 4) + actStart] = color;\r
 249 \r
 250                 }\r
 251 \r
 252 byte getPixel_X(int x, int y)\r
 253                 {\r
 254                 /* Select the plane from which we must read the pixel color: */\r
 255                 outpw(GRAC_ADDR, 0x04);\r
 256                 outpw(GRAC_ADDR+1, x & 3);\r
 257 \r
 258                 return vga[(unsigned)(widthBytes * y) + (x / 4) + actStart];\r
 259 \r
 260                 }\r
 261 \r
 262 void set320x240x256_X(void)\r
 263                 {\r
 264                 /* Set the unchained version of mode 13h: */\r
 265                 set320x200x256_X();\r
 266 \r
 267                 /* Modify the vertical sync polarity bits in the Misc. Output\r
 268                    Register to achieve square aspect ratio: */\r
 269                 outp(0x3C2, 0xE3);\r
 270 \r
 271                 /* Modify the vertical timing registers to reflect the increased\r
 272                    vertical resolution, and to center the image as good as\r
 273                    possible: */\r
 274                 outpw(0x3D4, 0x2C11);              /* turn off write protect */\r
 275                 outpw(0x3D4, 0x0D06);              /* vertical total */\r
 276                 outpw(0x3D4, 0x3E07);              /* overflow register */\r
 277                 outpw(0x3D4, 0xEA10);              /* vertical retrace start */\r
 278                 outpw(0x3D4, 0xAC11);              /* vertical retrace end AND wr.prot */\r
 279                 outpw(0x3D4, 0xDF12);              /* vertical display enable end */\r
 280                 outpw(0x3D4, 0xE715);              /* start vertical blanking */\r
 281                 outpw(0x3D4, 0x0616);              /* end vertical blanking */\r
 282 \r
 283                 /* Update mode info, so future operations are aware of the\r
 284                    resolution */\r
 285                 height = 240;\r
 286 \r
 287                 }\r
 288 \r
 289 \r
 290 /*-----------XXXX-------------*/\r
 291 /*tile*/\r
 292 //king_crimson's code\r
 293 void putColorBox_X(int x, int y, int w, int h, byte color) {\r
 294         outp(0x3c4, 0x02);\r
 295 \r
 296         int curx, cury;\r
 297         unsigned drawptr;\r
 298         for (curx=x; curx<(x+w); curx++) {\r
 299                 outp(0x3c5, 0x01 << (curx & 3));\r
 300                 drawptr = (unsigned)(widthBytes * y) + (curx / 4) + actStart;\r
 301                 for (cury=0; cury<h; cury++) {\r
 302                         vga[drawptr] = color;\r
 303                         drawptr += widthBytes;\r
 304                 }\r
 305         }\r
 306 }\r
 307 \r
 308 void vScroll(int rows)\r
 309 {\r
 310         // Scrolling = current start + (rows * bytes in a row)\r
 311         setVisibleStart(visStart + (rows * width));\r
 312 }\r
 313 \r
 314 void scrolly(int bongy)\r
 315 {\r
 316         int boingy=0;\r
 317         if(bongy<0)\r
 318                 boingy=-1;\r
 319         else if(bongy>0)\r
 320                 boingy=1;\r
 321 \r
 322         for(int ti=0;ti<TILEWH;ti++)\r
 323         {\r
 324                 delay(1);\r
 325                 vScroll(boingy);\r
 326         }\r
 327 }\r
 328 \r
 329 //king_crimson's code\r
 330 void hScroll(int Cols) {\r
 331         inp(0x3DA);\r
 332         outp(0x3C0, 0x13);\r
 333         outp(0x3C0, Cols & 3);\r
 334         outp(0x3D4, 0x13);\r
 335         outp(0x3D5, Cols/* >> 2*/);\r
 336         //setVisibleStart(visStart + (Cols * height));\r
 337         setVisibleStart(visStart + (Cols * width));\r
 338 }\r
 339 \r
 340 /*To implement smooth horizontal scrolling, you would do the following:\r
 341 -------------- Horizontal Scrolling ------------\r
 342 FOR X = 0 TO 319 DO\r
 343   SET HPP TO ( X MOD 4 )\r
 344   SET VGA OFFSET TO ( X/4 )\r
 345 END FOR\r
 346 ------------------------------------------------\r
 347 \r
 348 Okay, no problem at all (although I think you might have to fiddle\r
 349 around with the HPP a bit to get it right...try different values and\r
 350 see what works :).\r
 351 \r
 352 So, the next problem is with drawing the images off the screen where\r
 353 they aren't visible and then scrolling them on!!! As it turns out,\r
 354 there's yet ANOTHER register to accomplish this. This one's called the\r
 355 offset register (no, not the one I was talking about before, that one\r
 356 was actually the "start address" register) and it's at\r
 357 \r
 358   PORT:     3D4H/3D5H\r
 359   OFFSET:   13H\r
 360 \r
 361 and here's how to use it\r
 362 \r
 363 -------------- Offset Register ---------------\r
 364 OUT 13H TO PORT 3D4H\r
 365 OUT value TO PORT 3D5H\r
 366 ----------------------------------------------\r
 367 \r
 368 Now, what my VGA reference says is that this register holds the number\r
 369 of bytes (not pixels) difference between the start address of each row.\r
 370 So, in X-mode it normally contains the value 80 (as we remember,\r
 371 80 bytes * 4 planes = 320 pixels). This register does not affect the\r
 372 VISIBLE width of the display, only the difference between addresses on\r
 373 each row.\r
 374 \r
 375 When we scroll horizontally, we need a little bit of extra working space\r
 376 so we can draw off the edge of the screen.\r
 377 \r
 378 Perhaps a little diagram will clarify it. The following picture is of a\r
 379 standard X-mode addressing scheme with the OFFSET register set to 80.\r
 380 \r
 381       ROW    OFFSET\r
 382       0         0 ========================\r
 383       1        80 [                      ]\r
 384       2       160 [                      ]\r
 385       ..       .. [       VISIBLE        ]\r
 386                   [        SCREEN        ]\r
 387                   [                      ]\r
 388                   [                      ]\r
 389       ..       .. [                      ]\r
 390       199   15920 ========================\r
 391 \r
 392 and the next diagram is of a modified addressing scheme with the OFFSET\r
 393 register set to 82 (to give us 4 extra pixels on each side of the screen)\r
 394 \r
 395 ROW    OFFSET\r
 396 0         0 ------========================------\r
 397 1        82 |   V [                      ]   V |\r
 398 2       164 |   I [                      ]   I |\r
 399 ..       .. | N S [      VISIBLE         ] N S |\r
 400             | O I [       SCREEN         ] O I |\r
 401             | T B [                      ] T B |\r
 402             |   L [                      ]   L |\r
 403 ..       .. |   E [                      ]   E |\r
 404 199   16318 ------========================------\r
 405 \r
 406 Beautiful!!!\r
 407 \r
 408 As with vertical scrolling, however, you still have the problem of when\r
 409 you reach the bottom of page 4...and it's fixed in the same manner.\r
 410 \r
 411 I haven't actually managed to get infinite horizontal scrolling working,\r
 412 but the method I have just stated will give you a horizontal scrolling\r
 413 range of over 200 screens!!!! So if you need more (which is extremely\r
 414 unlikely), figure it out yourself.\r
 415 \r
 416 \r
 417 ------------------\r
 418 COMBINED SCROLLING\r
 419 ------------------\r
 420 To do both horizontal and vertical scrolling, all you have to do is combine\r
 421 the two methods with a few little extras (it's always the way isn't it).\r
 422 \r
 423 You have to start off with the original screen on the current page and the\r
 424 next page as well. When you scroll horizontally, you have to draw the edge\r
 425 that's coming in to the screen to BOTH pages (that means you'll be drawing\r
 426 the incoming edge twice, once for each page). You do this so that when you\r
 427 have scrolled vertically down through a complete page, you can jump back\r
 428 to the first page and it will (hopefully) have an identical copy, and you\r
 429 can then continue scrolling again.\r
 430 \r
 431 I'm sorry about this being so confusing but it's a bit difficult to explain.\r
 432 \r
 433 \r
 434 */\r
 435 //---------------------------------------------------\r
 436 //\r
 437 // Use the bios to get the address of the 8x8 font\r
 438 //\r
 439 // You need a font if you are going to draw text.\r
 440 //\r
 441 /*\r
 442 int far *\r
 443 getFont()\r
 444 {\r
 445         union REGPACK rg;\r
 446         int seg;\r
 447         int off;\r
 448         memset(&rg, 0, sizeof(rg));\r
 449 \r
 450         rg.w.ax = 0x1130;\r
 451         rg.h.bh = 0x03;\r
 452         intr(0x10, &rg);\r
 453         seg = rg.w.es;\r
 454         off = rg.w.bp;\r
 455         \r
 456 \r
 457         return (int far *)MK_FP(seg, off);\r
 458 }\r
 459 \r
 460 void drawChar(int x, int y, int color, byte c)\r
 461 {\r
 462                 int i, j;\r
 463                 int mask;\r
 464                 int far *font = getFont() + (c * 8);\r
 465 \r
 466                 for (i = 0; i < 8; i++)\r
 467                 {\r
 468                                 mask = *font;\r
 469                                 for (j = 0; j < 8; j++)\r
 470                                 {\r
 471                                                 if (mask & 0x80)\r
 472                                                 {\r
 473                                                                 //pixel(x + j, y + i, color);\r
 474                                                                 putPixel_X(x + j, y + i, color);\r
 475                                                 }\r
 476                                                 mask <<= 1;\r
 477                                 }\r
 478                                 font++;\r
 479                 }\r
 480 }\r
 481 \r
 482 void drawText(int x, int y, int color, byte string)\r
 483 {\r
 484                 while (string)\r
 485                 {\r
 486                                 drawChar(x, y, color, string);\r
 487                                 x += 8;\r
 488                                 string++;\r
 489                 }\r
 490 }\r
 491 */\r
 492 /////////////////////////////////////////////////////////////////////////////\r
 493 //                                                                         //\r
 494 // setvideo() - This function Manages the video modes                                     //\r
 495 //                                                                         //\r
 496 /////////////////////////////////////////////////////////////////////////////\r
 497 void setvideo(/*byte mode, */int vq){\r
 498                 union REGS in, out;\r
 499 \r
 500                 if(!vq){ // deinit the video\r
 501                                 // change to the video mode we were in before we switched to mode 13h\r
 502                                 in.h.ah = 0x00;\r
 503                                 in.h.al = old_mode;\r
 504                                 int86(0x10, &in, &out);\r
 505 \r
 506                 }else if(vq == 1){ // init the video\r
 507                                 // get old video mode\r
 508                                 in.h.ah = 0xf;\r
 509                                 int86(0x10, &in, &out);\r
 510                                 old_mode = out.h.al;\r
 511 \r
 512                                 // enter mode\r
 513                                 set320x240x256_X();\r
 514                 }\r
 515 }\r
 516 \r
 517 /////////////////////////////////////////////////////////////////////////////\r
 518 //                                                                                                                                               //\r
 519 // cls() - This clears the screen to the specified color, on the VGA or on //\r
 520 //               the Virtual screen.                                                                                     //\r
 521 //                                                                                                                                               //\r
 522 /////////////////////////////////////////////////////////////////////////////\r
 523 void cls(byte color, byte *Where){\r
 524                 _fmemset(Where, color, width*(height*17));\r
 525 }\r
 526 \r
 527 //color \82Ä\82·\82Æ\r
 528 int colortest(){\r
 529                 if(gq < NUM_COLORS){\r
 530                                 cls(gq, vga);\r
 531                                 gq++;\r
 532                 }else gq = 0;\r
 533                 return gq;\r
 534 }\r
 535 \r
 536 //color \82Ä\82·\82Æ\r
 537 int colorz(){\r
 538                 if(gq < HGQ){\r
 539 //----            cls(gq, vaddr);\r
 540                                 cls(gq, vga);\r
 541                                 gq++;\r
 542                 }else gq = LGQ;\r
 543                 return gq;\r
 544 }\r
 545 \r
 546 //slow spectrum down\r
 547 void ssd(int svq){\r
 548                 if(sy < height+1){\r
 549                                 if(sx < width+1){\r
 550                                                 //plotpixel(xx, yy, coor, vga);\r
 551                                                 //ppf(sx, sy, coor, vga);\r
 552                                                 putPixel_X(sx, sy, coor);\r
 553                                                 //printf("%d %d %d %d\n", sx, sy, svq, coor);\r
 554                                                 sx++;\r
 555                                 }else sx = 0;\r
 556                                 if(sx == width){\r
 557                                                 sy++;\r
 558                                                 if(svq == 7) coor++;\r
 559                                                 if(sy == height && svq == 8) coor = rand()%NUM_COLORS;\r
 560                                 }\r
 561                 }else sy = 0;\r
 562 }\r
 563 \r
 564 /*-----------ding-------------*/\r
 565 int ding(int q){\r
 566 \r
 567 //      if(yy<height){\r
 568                 setActivePage(0);\r
 569                 setVisiblePage(0);\r
 570 /*      }\r
 571         if((height)<yy<(height*2)){\r
 572                 setActivePage(1);\r
 573                 setVisiblePage(1);\r
 574         }\r
 575         if((height*2)<yy<(height*3)){\r
 576                 setActivePage(2);\r
 577                 setVisiblePage(2);\r
 578         }*/\r
 579                 int d3y;\r
 580 \r
 581 //++++  if(q <= 4 && q!=2 && gq == BONK-1) coor = rand()%HGQ;\r
 582                 if((q == 2\r
 583                 ||q==4\r
 584                 ||q==16\r
 585                 ) && gq == BONK-1){\r
 586                                                 if(coor < HGQ && coor < LGQ) coor = LGQ;\r
 587                                                 if(coor < HGQ){\r
 588                                                                 coor++;\r
 589                                 }else{ coor = LGQ;\r
 590                                                 bakax = rand()%3; bakay = rand()%3;\r
 591                                 }\r
 592                 }\r
 593 \r
 594                 if(q == 8){ colorz(); return gq; }else\r
 595                 if(q == 10){ ssd(q); /*printf("%d\n", coor);*/ }else\r
 596                 if(q == 5){ colortest(); return gq; }else\r
 597                 if(q == 11){ colorz(); delay(100); return gq; }\r
 598                 if(q == 6){\r
 599                                 coor = rand()%NUM_COLORS;\r
 600 //----            cls(coor, vaddr);\r
 601                                 cls(coor, vga);\r
 602                                 //updatevbuff();\r
 603                 }\r
 604 \r
 605                 if(q == 7 || q== 9){\r
 606                                 if(gq < HGQ){\r
 607                                                 if(q == 7) ssd(q);\r
 608                                                 if(q == 9){ ssd(q); coor++; }\r
 609                                                 gq++;\r
 610                                 }else gq = LGQ;\r
 611                 }\r
 612                 if((q<5 && gq<BONK) || (q==16 && gq<BONK)){ // the number variable make the colors more noticable\r
 613                                 if(q==1){\r
 614                                                 if(xx==width){bakax=0;}\r
 615                                                 if(xx==0){bakax=1;}\r
 616                                                 if(yy==height){bakay=0;}\r
 617                                                 if(yy==0){bakay=1;}\r
 618                                 }else if(q==3){\r
 619                                                 if(xx!=width||yy!=height){\r
 620                                                                 if(xx==0){bakax=1;bakay=-1;d3y=1;}\r
 621                                                                 if(yy==0){bakax=1;bakay=0;d3y=1;}\r
 622                                                                 if(xx==width){bakax=-1;bakay=-1;d3y=1;}\r
 623                                                                 if(yy==height){bakax=1;bakay=0;d3y=1;}\r
 624                                                 }else if(xx==width&&yy==height) xx=yy=0;\r
 625                                 }\r
 626                                 if(q==3){\r
 627                                                 if(d3y){\r
 628                                                                 if(bakay<0){\r
 629                                                                                 yy--;\r
 630                                                                                 d3y--;\r
 631                                                                 }else\r
 632                                                                 if(bakay>0){\r
 633                                                                                 yy++;\r
 634                                                                                 d3y--;\r
 635                                                                 }\r
 636                                                 }\r
 637                                                 if(bakax<0){\r
 638                                                                 xx--;\r
 639                                                 }else\r
 640                                                 if(bakax>0){\r
 641                                                                 xx++;\r
 642                                                 }\r
 643                                 }else{\r
 644                                                 if(q==16)\r
 645                                                 {\r
 646                                                                 if(!bakax){\r
 647                                                                                 xx--;//=TILEWH;\r
 648                                                                 }else if(bakax>0){\r
 649                                                                                 xx++;//=TILEWH;\r
 650                                                                 }\r
 651                                                                 if(!bakay){\r
 652                                                                                 yy--;//=TILEWH;\r
 653                                                                 }else if(bakay>0){\r
 654                                                                                 yy++;//=TILEWH;\r
 655                                                                 }\r
 656                                                 }else{\r
 657                                                                 if(!bakax){\r
 658 //                                                                              xx-=TILEWH;\r
 659                                                                                 xx--;\r
 660                                                                 }else if(bakax>1){\r
 661 //                                                                              xx+=TILEWH;\r
 662                                                                                 xx++;\r
 663                                                                 }\r
 664                                                                 if(!bakay){\r
 665 //                                                                              yy-=TILEWH;\r
 666                                                                                 yy--;\r
 667                                                                 }else if(bakay>1){\r
 668 //                                                                              yy+=TILEWH;\r
 669                                                                                 yy++;\r
 670                                                                 }\r
 671                                                 }\r
 672                                 }\r
 673                                 // fixer\r
 674 //                              if(q!=16){\r
 675 //if(q!=16)\r
 676                                                 if(xx<(0/*-TILEWH*/)) xx=(width/*+TILEWH*/);\r
 677                                                 if(yy<0) yy=(height*3);\r
 678                                                 if(xx>(width/*+TILEWH*/)) xx=(0/*-TILEWH*/);\r
 679                                                 if(yy>(height*3)) yy=0;\r
 680 //                              }\r
 681 \r
 682 //interesting effects\r
 683                                 if(q==16)\r
 684                                 {\r
 685                                 int tx=0,ty=0;\r
 686                                 tx+=xx+16;\r
 687                                 ty+=yy+16;\r
 688                                 putPixel_X(tx, ty, coor);\r
 689                                 //drawrect(tx, ty, tx+TILEWH, ty+TILEWH, coor);\r
 690                                 //printf("%d %d %d %d %d %d\n", xx, yy, tx, ty, TILEWH);\r
 691 \r
 692                                 // plot the pixel\r
 693 //----            ppf(xx, yy, coor, vga);\r
 694                                 }else /*if(xx>=0 && xx<width && yy>=0 && yy<(height*3))*/{\r
 695 //                                      putColorBox_X(xx, yy, TILEWH, TILEWH, coor);\r
 696 //++++0000\r
 697                                         putPixel_X(xx, yy, coor);\r
 698                                 } \r
 699 \r
 700 //----            if(q==2) ppf(rand()%, rand()%height, 0, vga);\r
 701 //                              if(q==2) putColorBox_X(rand()%width, rand()%(height*3), TILEWH, TILEWH, 0);\r
 702 //++++0000\r
 703                                 if(q==2) putPixel_X(rand()%width, rand()%(height*3), 0);\r
 704                                 if(q==16) putPixel_X(rand()%width, rand()%(height*3), 0);\r
 705                                 if(q==2||q==4||q==16){ bakax = rand()%3; bakay = rand()%3; }\r
 706                                 gq++;\r
 707 //if(xx<0||xx>320||yy<0||yy>(height*3))\r
 708 //        printf("%d %d %d %d %d %d\n", xx, yy, coor, bakax, bakay, getPixel_X(xx,yy));\r
 709 //        printf("%d\n", getPixel_X(xx,yy));\r
 710 //0000\r
 711 //        drawText(0, 0, 15, getPixel_X(xx,yy));\r
 712                 }else gq = LGQ;\r
 713                 return gq;\r
 714 }\r
 715 \r
 716 \r
 717 /*\r
 718  * The library testing routines follows below.\r
 719  */\r
 720 \r
 721 \r
 722 #ifdef TESTING\r
 723 \r
 724 #include <stdio.h>\r
 725 #include <conio.h>\r
 726 \r
 727 void doTest(void)\r
 728                 {\r
 729                 int p, x, y, pages;\r
 730 \r
 731                 /* This is the way to calculate the number of pages available. */\r
 732                 pages = 65536L/(widthBytes*height); // apparently this takes the A000 address\r
 733 \r
 734                 printf("%d\n", pages);\r
 735 \r
 736                 for (p = 0; p <= pages; ++p)\r
 737                                 {\r
 738                                 setActivePage(p);\r
 739 \r
 740                                 /* On each page draw a single colored border, and dump the palette\r
 741                                    onto a small square about the middle of the page. */\r
 742 \r
 743                                    //{\r
 744                                                 for (x = 0; x <= width; ++x)\r
 745                                                                 {\r
 746                                                                 putPixel_X(x, 0, p+1);\r
 747                                                                 if(p!=pages) putPixel_X(x, height-1, p+1);\r
 748                                                                                 else putPixel_X(x, 99-1, p+1);\r
 749                                                                 }\r
 750 \r
 751                                                 for (y = 0; y <= height; ++y)\r
 752                                                                 {\r
 753                                                                 putPixel_X(0, y, p+1);\r
 754                                                                 if(p!=pages) putPixel_X(width-1, y, p+1);\r
 755                                                                                 else putPixel_X(width-1, y, p+1);\r
 756                                                                 }\r
 757 \r
 758                                                 for (x = 0; x < 16; ++x)\r
 759                                                                 for (y = 0; y < 16; ++y)\r
 760                                                                                 putPixel_X(x+(p+2)*16, y+(p+2)*16, x + y*16);\r
 761                                                 //}\r
 762 \r
 763 //                              drawText(0, 0, 15, p);\r
 764 \r
 765                                 }\r
 766 \r
 767                 /* Each pages will now contain a different image.  Let the user cycle\r
 768                    through all the pages by pressing a key. */\r
 769                 for (p = 0; p <= pages; ++p)\r
 770                                 {\r
 771                                 setVisiblePage(p);\r
 772                                 //drawText(0, 240, 15, "bakapi");\r
 773                                 getch();\r
 774                                 }\r
 775 \r
 776                 }\r
 777 \r
 778 /*\r
 779  * Library test (program) entry point.\r
 780  */\r
 781 \r
 782 int main(void)\r
 783                 {\r
 784                 int key,d;\r
 785                 // main variables\r
 786                 d=1; // switch variable\r
 787                 key=4; // default screensaver number\r
 788 //        puts("First, have a look at the 320x200 mode.  I will draw some rubbish");\r
 789 //        puts("on all of the four pages, then let you cycle through them by");\r
 790 //        puts("hitting a key on each page.");\r
 791 //        puts("Press a key when ready...");\r
 792 //        getch();\r
 793 \r
 794 //        doTest();\r
 795 \r
 796 //        puts("Then, check out Mode X, 320x240 with 3 (and a half) pages.");\r
 797 //        puts("Press a key when ready...");\r
 798 //        getch();\r
 799 \r
 800 //++++0000\r
 801                 setvideo(1);\r
 802 //mxInit();\r
 803 // screen savers\r
 804 \r
 805 /*while(d!=0){ // on!\r
 806                                 if(!kbhit()){ // conditions of screen saver\r
 807                                                 ding(key);\r
 808                                 }else{\r
 809                                                 setvideo(0);\r
 810                                                 // user imput switch\r
 811                                                 printf("Enter 1, 2, 3, 4, or 6 to run a screensaver, or enter 5 to quit.\n", getch());  // prompt the user\r
 812                                                 scanf("%d", &key);\r
 813                                                 //if(key==3){xx=yy=0;} // crazy screen saver wwww\r
 814                                                 if(key==5) d=0;\r
 815                                                 setvideo(1);\r
 816                                 }\r
 817                 }*/ // else off\r
 818                 while(!kbhit()){ // conditions of screen saver\r
 819                         ding(4);\r
 820                 }\r
 821                 //end of screen savers\r
 822 //              doTest();\r
 823                 getch();\r
 824 \r
 825                 while(!kbhit()){ // conditions of screen saver\r
 826                         hScroll(1);\r
 827                         scrolly(1);\r
 828                         delay(100);\r
 829                 }\r
 830 //++++0000\r
 831                 setvideo(0);\r
 832 //mxTerm();\r
 833 //mxGetVersion();\r
 834                 puts("Where to next?  It's your move! wwww");\r
 835                 printf("bakapi ver. 1.04.09.03\nis made by sparky4\81i\81\86\83Ö\81\85\81j feel free to use it ^^\nLicence: GPL v2\n");\r
 836                 return 0;\r
 837                 }\r
 838 \r
 839 #endif\r