16/cawat/16_in.c

   1 /* Catacomb Armageddon Source Code\r
   2  * Copyright (C) 1993-2014 Flat Rock Software\r
   3  *\r
   4  * This program is free software; you can redistribute it and/or modify\r
   5  * it under the terms of the GNU General Public License as published by\r
   6  * the Free Software Foundation; either version 2 of the License, or\r
   7  * (at your option) any later version.\r
   8  *\r
   9  * This program is distributed in the hope that it will be useful,\r
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  12  * GNU General Public License for more details.\r
  13  *\r
  14  * You should have received a copy of the GNU General Public License along\r
  15  * with this program; if not, write to the Free Software Foundation, Inc.,\r
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\r
  17  */\r
  18 \r
  19 //\r
  20 //      ID Engine\r
  21 //      ID_IN.c - Input Manager\r
  22 //      v1.0d1\r
  23 //      By Jason Blochowiak\r
  24 //\r
  25 \r
  26 //\r
  27 //      This module handles dealing with the various input devices\r
  28 //\r
  29 //      Depends on: Memory Mgr (for demo recording), Sound Mgr (for timing stuff),\r
  30 //                              User Mgr (for command line parms)\r
  31 //\r
  32 //      Globals:\r
  33 //              LastScan - The keyboard scan code of the last key pressed\r
  34 //              LastASCII - The ASCII value of the last key pressed\r
  35 //      DEBUG - there are more globals\r
  36 //\r
  37 \r
  38 //#include "ID_HEADS.H"
  39 #include "16_in.h"\r
  40 //#pragma       hdrstop\r
  41 \r
  42 #define KeyInt  9       // The keyboard ISR number\r
  43 \r
  44 // Stuff for the joystick\r
  45 #define JoyScaleMax             32768\r
  46 #define JoyScaleShift   8\r
  47 #define MaxJoyValue             5000\r
  48 \r
  49 //      Global variables\r
  50                 boolean JoystickCalibrated=false;               // MDM (GAMERS EDGE) - added\r
  51                 ControlType ControlTypeUsed;                            // MDM (GAMERS EDGE) - added\r
  52 \r
  53                 boolean         Keyboard[NumCodes],\r
  54                                         JoysPresent[MaxJoys],\r
  55                                         MousePresent;\r
  56                 boolean         Paused;\r
  57                 char            LastASCII;\r
  58                 ScanCode        LastScan;\r
  59                 KeyboardDef     KbdDefs[MaxKbds] = {{0x1d,0x38,0x47,0x48,0x49,0x4b,0x4d,0x4f,0x50,0x51}};\r
  60                 JoystickDef     JoyDefs[MaxJoys];\r
  61                 ControlType     Controls[MaxPlayers];\r
  62 \r
  63 //              Demo            DemoMode = demo_Off;\r
  64 //              byte /*_1seg*/  *DemoBuffer;\r
  65 //              word            DemoOffset,DemoSize;\r
  66 \r
  67 //      Internal variables\r
  68 static  boolean         IN_Started;\r
  69 static  boolean         CapsLock;\r
  70 static  ScanCode        CurCode,LastCode;\r
  71 static  byte        far ASCIINames[] =          // Unshifted ASCII for scan codes\r
  72                                         {\r
  73 //       0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F\r
  74         0  ,27 ,'1','2','3','4','5','6','7','8','9','0','-','=',8  ,9  ,        // 0\r
  75         'q','w','e','r','t','y','u','i','o','p','[',']',13 ,0  ,'a','s',        // 1\r
  76         'd','f','g','h','j','k','l',';',39 ,'`',0  ,92 ,'z','x','c','v',        // 2\r
  77         'b','n','m',',','.','/',0  ,'*',0  ,' ',0  ,0  ,0  ,0  ,0  ,0  ,        // 3\r
  78         0  ,0  ,0  ,0  ,0  ,0  ,0  ,'7','8','9','-','4','5','6','+','1',        // 4\r
  79         '2','3','0',127,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 5\r
  80         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 6\r
  81         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0           // 7\r
  82                                         },\r
  83                                         far ShiftNames[] =              // Shifted ASCII for scan codes\r
  84                                         {\r
  85 //       0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F\r
  86         0  ,27 ,'!','@','#','$','%','^','&','*','(',')','_','+',8  ,9  ,        // 0\r
  87         'Q','W','E','R','T','Y','U','I','O','P','{','}',13 ,0  ,'A','S',        // 1\r
  88         'D','F','G','H','J','K','L',':',34 ,'~',0  ,'|','Z','X','C','V',        // 2\r
  89         'B','N','M','<','>','?',0  ,'*',0  ,' ',0  ,0  ,0  ,0  ,0  ,0  ,        // 3\r
  90         0  ,0  ,0  ,0  ,0  ,0  ,0  ,'7','8','9','-','4','5','6','+','1',        // 4\r
  91         '2','3','0',127,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 5\r
  92         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 6\r
  93         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0           // 7\r
  94                                         },\r
  95                                         far SpecialNames[] =    // ASCII for 0xe0 prefixed codes\r
  96                                         {\r
  97 //       0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F\r
  98         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 0\r
  99         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,13 ,0  ,0  ,0  ,        // 1\r
 100         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 2\r
 101         0  ,0  ,0  ,0  ,0  ,'/',0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 3\r
 102         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 4\r
 103         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 5\r
 104         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,        // 6\r
 105         0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0  ,0           // 7\r
 106                                         },\r
 107 \r
 108 #if 0\r
 109                                         *ScanNames[] =          // Scan code names with single chars\r
 110                                         {\r
 111         "?","?","1","2","3","4","5","6","7","8","9","0","-","+","?","?",\r
 112         "Q","W","E","R","T","Y","U","I","O","P","[","]","|","?","A","S",\r
 113         "D","F","G","H","J","K","L",";","\"","?","?","?","Z","X","C","V",\r
 114         "B","N","M",",",".","/","?","?","?","?","?","?","?","?","?","?",\r
 115         "?","?","?","?","?","?","?","?","\xf","?","-","\x15","5","\x11","+","?",\r
 116         "\x13","?","?","?","?","?","?","?","?","?","?","?","?","?","?","?",\r
 117         "?","?","?","?","?","?","?","?","?","?","?","?","?","?","?","?",\r
 118         "?","?","?","?","?","?","?","?","?","?","?","?","?","?","?","?"\r
 119                                         },      // DEBUG - consolidate these\r
 120 #endif\r
 121 \r
 122                                         far ExtScanCodes[] =    // Scan codes with >1 char names\r
 123                                         {\r
 124         1,0xe,0xf,0x1d,0x2a,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,\r
 125         0x3f,0x40,0x41,0x42,0x43,0x44,0x57,0x59,0x46,0x1c,0x36,\r
 126         0x37,0x38,0x47,0x49,0x4f,0x51,0x52,0x53,0x45,0x48,\r
 127         0x50,0x4b,0x4d,0x00\r
 128                                         };\r
 129 #if 0\r
 130                                         *ExtScanNames[] =       // Names corresponding to ExtScanCodes\r
 131                                         {\r
 132         "Esc","BkSp","Tab","Ctrl","LShft","Space","CapsLk","F1","F2","F3","F4",\r
 133         "F5","F6","F7","F8","F9","F10","F11","F12","ScrlLk","Enter","RShft",\r
 134         "PrtSc","Alt","Home","PgUp","End","PgDn","Ins","Del","NumLk","Up",\r
 135         "Down","Left","Right",""\r
 136                                         };\r
 137 #endif\r
 138 static  Direction       DirTable[] =            // Quick lookup for total direction\r
 139                                         {\r
 140                                                 dir_NorthWest,  dir_North,      dir_NorthEast,\r
 141                                                 dir_West,               dir_None,       dir_East,\r
 142                                                 dir_SouthWest,  dir_South,      dir_SouthEast\r
 143                                         };\r
 144 \r
 145 static  void                    (*INL_KeyHook)(void);\r
 146 static  void interrupt  (*OldKeyVect)(void);\r
 147 \r
 148 static  char                    *ParmStrings[] = {"nojoys","nomouse",nil};\r
 149 \r
 150 //      Internal routines\r
 151 \r
 152 ///////////////////////////////////////////////////////////////////////////\r
 153 //\r
 154 //      INL_KeyService() - Handles a keyboard interrupt (key up/down)\r
 155 //\r
 156 ///////////////////////////////////////////////////////////////////////////\r
 157 static void interrupt\r
 158 INL_KeyService(void)\r
 159 {\r
 160 static  boolean special;\r
 161                 byte    k,c,\r
 162                                 temp;\r
 163 \r
 164         k = inp(0x60);  // Get the scan code\r
 165 \r
 166         // Tell the XT keyboard controller to clear the key\r
 167         outp(0x61,(temp = inp(0x61)) | 0x80);\r
 168         outp(0x61,temp);\r
 169 \r
 170         if (k == 0xe0)          // Special key prefix\r
 171                 special = true;\r
 172         else if (k == 0xe1)     // Handle Pause key\r
 173                 Paused = true;\r
 174         else\r
 175         {\r
 176                 if (k & 0x80)   // Break code\r
 177                 {\r
 178                         k &= 0x7f;\r
 179 \r
 180 // DEBUG - handle special keys: ctl-alt-delete, print scrn\r
 181 \r
 182                         Keyboard[k] = false;\r
 183                 }\r
 184                 else                    // Make code\r
 185                 {\r
 186                         LastCode = CurCode;\r
 187                         CurCode = LastScan = k;\r
 188                         Keyboard[k] = true;\r
 189 \r
 190                         if (special)\r
 191                                 c = SpecialNames[k];\r
 192                         else\r
 193                         {\r
 194                                 if (k == sc_CapsLock)\r
 195                                 {\r
 196                                         CapsLock ^= true;\r
 197                                         // DEBUG - make caps lock light work\r
 198                                 }\r
 199 \r
 200                                 if (Keyboard[sc_LShift] || Keyboard[sc_RShift]) // If shifted\r
 201                                 {\r
 202                                         c = ShiftNames[k];\r
 203                                         if ((c >= 'A') && (c <= 'Z') && CapsLock)\r
 204                                                 c += 'a' - 'A';\r
 205                                 }\r
 206                                 else\r
 207                                 {\r
 208                                         c = ASCIINames[k];\r
 209                                         if ((c >= 'a') && (c <= 'z') && CapsLock)\r
 210                                                 c -= 'a' - 'A';\r
 211                                 }\r
 212                         }\r
 213                         if (c)\r
 214                                 LastASCII = c;\r
 215                 }\r
 216 \r
 217                 special = false;\r
 218         }\r
 219 \r
 220         if (INL_KeyHook && !special)\r
 221                 INL_KeyHook();\r
 222         outp(0x20,0x20);\r
 223 }\r
 224 \r
 225 ///////////////////////////////////////////////////////////////////////////\r
 226 //\r
 227 //      INL_GetMouseDelta() - Gets the amount that the mouse has moved from the\r
 228 //              mouse driver\r
 229 //\r
 230 ///////////////////////////////////////////////////////////////////////////\r
 231 static void\r
 232 INL_GetMouseDelta(int *x,int *y)\r
 233 {\r
 234         Mouse(MDelta);\r
 235         *x = _CX;\r
 236         *y = _DX;\r
 237 }\r
 238 \r
 239 ///////////////////////////////////////////////////////////////////////////\r
 240 //\r
 241 //      INL_GetMouseButtons() - Gets the status of the mouse buttons from the\r
 242 //              mouse driver\r
 243 //\r
 244 ///////////////////////////////////////////////////////////////////////////\r
 245 static word\r
 246 INL_GetMouseButtons(void)\r
 247 {\r
 248         word    buttons;\r
 249 \r
 250         Mouse(MButtons);\r
 251         buttons = _BX;\r
 252         return(buttons);\r
 253 }\r
 254 \r
 255 ///////////////////////////////////////////////////////////////////////////\r
 256 //\r
 257 //      IN_GetJoyAbs() - Reads the absolute position of the specified joystick\r
 258 //\r
 259 ///////////////////////////////////////////////////////////////////////////\r
 260 void\r
 261 IN_GetJoyAbs(word joy,word *xp,word *yp)\r
 262 {\r
 263         byte    xb,yb,\r
 264                         xs,ys;\r
 265         word    x,y;\r
 266 \r
 267         x = y = 0;\r
 268         xs = joy? 2 : 0;                // Find shift value for x axis\r
 269         xb = 1 << xs;                   // Use shift value to get x bit mask\r
 270         ys = joy? 3 : 1;                // Do the same for y axis\r
 271         yb = 1 << ys;\r
 272 \r
 273 // Read the absolute joystick values
 274         __asm
 275         {\r
 276                 pushf                           // Save some registers\r
 277                 push    si\r
 278                 push    di\r
 279                 cli                                     // Make sure an interrupt doesn't screw the timings\r
 280 \r
 281 \r
 282                 mov             dx,0x201\r
 283                 in              al,dx\r
 284                 out             dx,al           // Clear the resistors\r
 285 \r
 286                 mov             ah,[xb]         // Get masks into registers\r
 287                 mov             ch,[yb]\r
 288 \r
 289                 xor             si,si           // Clear count registers\r
 290                 xor             di,di\r
 291                 xor             bh,bh           // Clear high byte of bx for later\r
 292
 293                 push    bp                      // Don't mess up stack frame\r
 294                 mov             bp,MaxJoyValue\r
 295 \r
 296 loop:\r
 297                 in              al,dx           // Get bits indicating whether all are finished\r
 298 \r
 299                 dec             bp                      // Check bounding register\r
 300                 jz              done            // We have a silly value - abort\r
 301 \r
 302                 mov             bl,al           // Duplicate the bits\r
 303                 and             bl,ah           // Mask off useless bits (in [xb])\r
 304                 add             si,bx           // Possibly increment count register\r
 305                 mov             cl,bl           // Save for testing later\r
 306 \r
 307                 mov             bl,al\r
 308                 and             bl,ch           // [yb]\r
 309                 add             di,bx\r
 310 \r
 311                 add             cl,bl\r
 312                 jnz             loop            // If both bits were 0, drop out\r
 313 \r
 314 done:\r
 315      pop                bp\r
 316
 317                 mov             cl,[xs]         // Get the number of bits to shift\r
 318                 shr             si,cl           //  and shift the count that many times\r
 319 \r
 320                 mov             cl,[ys]\r
 321                 shr             di,cl\r
 322 \r
 323                 mov             [x],si          // Store the values into the variables\r
 324                 mov             [y],di\r
 325
 326                 pop             di\r
 327                 pop             si\r
 328                 popf                            // Restore the registers
 329         }\r
 330 \r
 331         *xp = x;\r
 332         *yp = y;\r
 333 }\r
 334 \r
 335 ///////////////////////////////////////////////////////////////////////////\r
 336 //\r
 337 //      INL_GetJoyDelta() - Returns the relative movement of the specified\r
 338 //              joystick (from +/-127, scaled adaptively)\r
 339 //\r
 340 ///////////////////////////////////////////////////////////////////////////\r
 341 static void\r
 342 INL_GetJoyDelta(word joy,int *dx,int *dy,boolean adaptive)\r
 343 {\r
 344         word            x,y;\r
 345         dword   time;\r
 346         JoystickDef     *def;\r
 347 static  dword   lasttime;\r
 348 \r
 349         IN_GetJoyAbs(joy,&x,&y);\r
 350         def = JoyDefs + joy;\r
 351 \r
 352         if (x < def->threshMinX)\r
 353         {\r
 354                 if (x < def->joyMinX)\r
 355                         x = def->joyMinX;\r
 356 \r
 357                 x = -(x - def->threshMinX);\r
 358                 x *= def->joyMultXL;\r
 359                 x >>= JoyScaleShift;\r
 360                 *dx = (x > 127)? -127 : -x;\r
 361         }\r
 362         else if (x > def->threshMaxX)\r
 363         {\r
 364                 if (x > def->joyMaxX)\r
 365                         x = def->joyMaxX;\r
 366 \r
 367                 x = x - def->threshMaxX;\r
 368                 x *= def->joyMultXH;\r
 369                 x >>= JoyScaleShift;\r
 370                 *dx = (x > 127)? 127 : x;\r
 371         }\r
 372         else\r
 373                 *dx = 0;\r
 374 \r
 375         if (y < def->threshMinY)\r
 376         {\r
 377                 if (y < def->joyMinY)\r
 378                         y = def->joyMinY;\r
 379 \r
 380                 y = -(y - def->threshMinY);\r
 381                 y *= def->joyMultYL;\r
 382                 y >>= JoyScaleShift;\r
 383                 *dy = (y > 127)? -127 : -y;\r
 384         }\r
 385         else if (y > def->threshMaxY)\r
 386         {\r
 387                 if (y > def->joyMaxY)\r
 388                         y = def->joyMaxY;\r
 389 \r
 390                 y = y - def->threshMaxY;\r
 391                 y *= def->joyMultYH;\r
 392                 y >>= JoyScaleShift;\r
 393                 *dy = (y > 127)? 127 : y;\r
 394         }\r
 395         else\r
 396                 *dy = 0;\r
 397 \r
 398         if (adaptive)\r
 399         {\r
 400                 time = (TimeCount - lasttime) / 2;\r
 401                 if (time)\r
 402                 {\r
 403                         if (time > 8)\r
 404                                 time = 8;\r
 405                         *dx *= time;\r
 406                         *dy *= time;\r
 407                 }\r
 408         }\r
 409         lasttime = TimeCount;\r
 410 }\r
 411 \r
 412 ///////////////////////////////////////////////////////////////////////////\r
 413 //\r
 414 //      INL_GetJoyButtons() - Returns the button status of the specified\r
 415 //              joystick\r
 416 //\r
 417 ///////////////////////////////////////////////////////////////////////////\r
 418 static word\r
 419 INL_GetJoyButtons(word joy)\r
 420 {\r
 421 register        word    result;\r
 422 \r
 423         result = inp(0x201);    // Get all the joystick buttons\r
 424         result >>= joy? 6 : 4;  // Shift into bits 0-1\r
 425         result &= 3;                            // Mask off the useless bits\r
 426         result ^= 3;\r
 427         return(result);\r
 428 }\r
 429 \r
 430 ///////////////////////////////////////////////////////////////////////////\r
 431 //\r
 432 //      IN_GetJoyButtonsDB() - Returns the de-bounced button status of the\r
 433 //              specified joystick\r
 434 //\r
 435 ///////////////////////////////////////////////////////////////////////////\r
 436 word\r
 437 IN_GetJoyButtonsDB(word joy)\r
 438 {\r
 439         dword   lasttime;\r
 440         word            result1,result2;\r
 441 \r
 442         do\r
 443         {\r
 444                 result1 = INL_GetJoyButtons(joy);\r
 445                 lasttime = TimeCount;\r
 446                 while (TimeCount == lasttime)\r
 447                         ;\r
 448                 result2 = INL_GetJoyButtons(joy);\r
 449         } while (result1 != result2);\r
 450         return(result1);\r
 451 }\r
 452 \r
 453 ///////////////////////////////////////////////////////////////////////////\r
 454 //\r
 455 //      INL_StartKbd() - Sets up my keyboard stuff for use\r
 456 //\r
 457 ///////////////////////////////////////////////////////////////////////////\r
 458 static void\r
 459 INL_StartKbd(void)\r
 460 {\r
 461         INL_KeyHook = 0;        // Clear key hook\r
 462 \r
 463         IN_ClearKeysDown();\r
 464 \r
 465         OldKeyVect = getvect(KeyInt);\r
 466         setvect(KeyInt,INL_KeyService);\r
 467 }\r
 468 \r
 469 ///////////////////////////////////////////////////////////////////////////\r
 470 //\r
 471 //      INL_ShutKbd() - Restores keyboard control to the BIOS\r
 472 //\r
 473 ///////////////////////////////////////////////////////////////////////////\r
 474 static void\r
 475 INL_ShutKbd(void)\r
 476 {\r
 477         poke(0x40,0x17,peek(0x40,0x17) & 0xfaf0);       // Clear ctrl/alt/shift flags\r
 478 \r
 479         setvect(KeyInt,OldKeyVect);\r
 480 }\r
 481 \r
 482 ///////////////////////////////////////////////////////////////////////////\r
 483 //\r
 484 //      INL_StartMouse() - Detects and sets up the mouse\r
 485 //\r
 486 ///////////////////////////////////////////////////////////////////////////\r
 487 static boolean\r
 488 INL_StartMouse(void)\r
 489 {\r
 490         if (getvect(MouseInt))\r
 491         {\r
 492                 Mouse(MReset);\r
 493                 if (_AX == 0xffff)\r
 494                         return(true);\r
 495         }\r
 496         return(false);\r
 497 }\r
 498 \r
 499 ///////////////////////////////////////////////////////////////////////////\r
 500 //\r
 501 //      INL_ShutMouse() - Cleans up after the mouse\r
 502 //\r
 503 ///////////////////////////////////////////////////////////////////////////\r
 504 static void\r
 505 INL_ShutMouse(void)\r
 506 {\r
 507 }\r
 508 \r
 509 //\r
 510 //      INL_SetJoyScale() - Sets up scaling values for the specified joystick\r
 511 //\r
 512 static void\r
 513 INL_SetJoyScale(word joy)\r
 514 {\r
 515         JoystickDef     *def;\r
 516 \r
 517         def = &JoyDefs[joy];\r
 518         def->joyMultXL = JoyScaleMax / (def->threshMinX - def->joyMinX);\r
 519         def->joyMultXH = JoyScaleMax / (def->joyMaxX - def->threshMaxX);\r
 520         def->joyMultYL = JoyScaleMax / (def->threshMinY - def->joyMinY);\r
 521         def->joyMultYH = JoyScaleMax / (def->joyMaxY - def->threshMaxY);\r
 522 }\r
 523 \r
 524 ///////////////////////////////////////////////////////////////////////////\r
 525 //\r
 526 //      IN_SetupJoy() - Sets up thresholding values and calls INL_SetJoyScale()\r
 527 //              to set up scaling values\r
 528 //\r
 529 ///////////////////////////////////////////////////////////////////////////\r
 530 void\r
 531 IN_SetupJoy(word joy,word minx,word maxx,word miny,word maxy)\r
 532 {\r
 533         word            d,r;\r
 534         JoystickDef     *def;\r
 535 \r
 536         def = &JoyDefs[joy];\r
 537 \r
 538         def->joyMinX = minx;\r
 539         def->joyMaxX = maxx;\r
 540         r = maxx - minx;\r
 541         d = r / 5;\r
 542         def->threshMinX = ((r / 2) - d) + minx;\r
 543         def->threshMaxX = ((r / 2) + d) + minx;\r
 544 \r
 545         def->joyMinY = miny;\r
 546         def->joyMaxY = maxy;\r
 547         r = maxy - miny;\r
 548         d = r / 5;\r
 549         def->threshMinY = ((r / 2) - d) + miny;\r
 550         def->threshMaxY = ((r / 2) + d) + miny;\r
 551 \r
 552         INL_SetJoyScale(joy);\r
 553 }\r
 554 \r
 555 ///////////////////////////////////////////////////////////////////////////\r
 556 //\r
 557 //      INL_StartJoy() - Detects & auto-configures the specified joystick\r
 558 //                                      The auto-config assumes the joystick is centered\r
 559 //\r
 560 ///////////////////////////////////////////////////////////////////////////\r
 561 static boolean\r
 562 INL_StartJoy(word joy)\r
 563 {\r
 564         word            x,y;\r
 565 \r
 566         IN_GetJoyAbs(joy,&x,&y);\r
 567 \r
 568         if\r
 569         (\r
 570                 ((x == 0) || (x > MaxJoyValue - 10))\r
 571         ||      ((y == 0) || (y > MaxJoyValue - 10))\r
 572         )\r
 573                 return(false);\r
 574         else\r
 575         {\r
 576                 IN_SetupJoy(joy,0,x * 2,0,y * 2);\r
 577                 return(true);\r
 578         }\r
 579 }\r
 580 \r
 581 ///////////////////////////////////////////////////////////////////////////\r
 582 //\r
 583 //      INL_ShutJoy() - Cleans up the joystick stuff\r
 584 //\r
 585 ///////////////////////////////////////////////////////////////////////////\r
 586 static void\r
 587 INL_ShutJoy(word joy)\r
 588 {\r
 589         JoysPresent[joy] = false;\r
 590 }\r
 591 \r
 592 //      Public routines\r
 593 \r
 594 ///////////////////////////////////////////////////////////////////////////\r
 595 //\r
 596 //      IN_Startup() - Starts up the Input Mgr\r
 597 //\r
 598 ///////////////////////////////////////////////////////////////////////////\r
 599 void\r
 600 IN_Startup(void)\r
 601 {\r
 602         boolean checkjoys,checkmouse;\r
 603         word    i;\r
 604 \r
 605         if (IN_Started)\r
 606                 return;\r
 607 \r
 608         checkjoys = true;\r
 609         checkmouse = true;\r
 610         for (i = 1;i < _argc;i++)\r
 611         {\r
 612                 switch (US_CheckParm(_argv[i],ParmStrings))\r
 613                 {\r
 614                 case 0:\r
 615                         checkjoys = false;\r
 616                         break;\r
 617                 case 1:\r
 618                         checkmouse = false;\r
 619                         break;\r
 620                 }\r
 621         }\r
 622 \r
 623         INL_StartKbd();\r
 624         MousePresent = checkmouse? INL_StartMouse() : false;\r
 625 \r
 626         for (i = 0;i < MaxJoys;i++)\r
 627                 JoysPresent[i] = checkjoys? INL_StartJoy(i) : false;\r
 628 \r
 629         IN_Started = true;\r
 630 }\r
 631 \r
 632 ///////////////////////////////////////////////////////////////////////////\r
 633 //\r
 634 //      IN_Default() - Sets up default conditions for the Input Mgr\r
 635 //\r
 636 ///////////////////////////////////////////////////////////////////////////\r
 637 void\r
 638 IN_Default(boolean gotit,ControlType in)\r
 639 {\r
 640         if\r
 641         (\r
 642                 (!gotit)\r
 643         ||      ((in == ctrl_Joystick1) && !JoysPresent[0])\r
 644         ||      ((in == ctrl_Joystick2) && !JoysPresent[1])\r
 645         ||      ((in == ctrl_Mouse) && !MousePresent)\r
 646         )\r
 647                 in = ctrl_Keyboard1;\r
 648         IN_SetControlType(0,in);\r
 649 }\r
 650 \r
 651 ///////////////////////////////////////////////////////////////////////////\r
 652 //\r
 653 //      IN_Shutdown() - Shuts down the Input Mgr\r
 654 //\r
 655 ///////////////////////////////////////////////////////////////////////////\r
 656 void\r
 657 IN_Shutdown(void)\r
 658 {\r
 659         word    i;\r
 660 \r
 661         if (!IN_Started)\r
 662                 return;\r
 663 \r
 664         INL_ShutMouse();\r
 665         for (i = 0;i < MaxJoys;i++)\r
 666                 INL_ShutJoy(i);\r
 667         INL_ShutKbd();\r
 668 \r
 669         IN_Started = false;\r
 670 }\r
 671 \r
 672 ///////////////////////////////////////////////////////////////////////////\r
 673 //\r
 674 //      IN_SetKeyHook() - Sets the routine that gets called by INL_KeyService()\r
 675 //                      everytime a real make/break code gets hit\r
 676 //\r
 677 ///////////////////////////////////////////////////////////////////////////\r
 678 void\r
 679 IN_SetKeyHook(void (*hook)())\r
 680 {\r
 681         INL_KeyHook = hook;\r
 682 }\r
 683 \r
 684 ///////////////////////////////////////////////////////////////////////////\r
 685 //\r
 686 //      IN_ClearKeyDown() - Clears the keyboard array\r
 687 //\r
 688 ///////////////////////////////////////////////////////////////////////////\r
 689 void\r
 690 IN_ClearKeysDown(void)\r
 691 {\r
 692         int     i;\r
 693 \r
 694         LastScan = sc_None;\r
 695         LastASCII = key_None;\r
 696         for (i = 0;i < NumCodes;i++)\r
 697                 Keyboard[i] = false;\r
 698 }\r
 699 \r
 700 ///////////////////////////////////////////////////////////////////////////\r
 701 //\r
 702 //      INL_AdjustCursor() - Internal routine of common code from IN_ReadCursor()\r
 703 //\r
 704 ///////////////////////////////////////////////////////////////////////////\r
 705 static void\r
 706 INL_AdjustCursor(CursorInfo *info,word buttons,int dx,int dy)\r
 707 {\r
 708         if (buttons & (1 << 0))\r
 709                 info->button0 = true;\r
 710         if (buttons & (1 << 1))\r
 711                 info->button1 = true;\r
 712 \r
 713         info->x += dx;\r
 714         info->y += dy;\r
 715 }\r
 716 \r
 717 ///////////////////////////////////////////////////////////////////////////\r
 718 //\r
 719 //      IN_ReadCursor() - Reads the input devices and fills in the cursor info\r
 720 //              struct\r
 721 //\r
 722 ///////////////////////////////////////////////////////////////////////////\r
 723 void\r
 724 IN_ReadCursor(CursorInfo *info)\r
 725 {\r
 726         word    i,\r
 727                         buttons;\r
 728         int             dx,dy;\r
 729 \r
 730         info->x = info->y = 0;\r
 731         info->button0 = info->button1 = false;\r
 732 \r
 733         if (MousePresent)\r
 734         {\r
 735                 buttons = INL_GetMouseButtons();\r
 736                 INL_GetMouseDelta(&dx,&dy);\r
 737                 INL_AdjustCursor(info,buttons,dx,dy);\r
 738         }\r
 739 \r
 740         for (i = 0;i < MaxJoys;i++)\r
 741         {\r
 742                 if (!JoysPresent[i])\r
 743                         continue;\r
 744 \r
 745                 buttons = INL_GetJoyButtons(i);\r
 746                 INL_GetJoyDelta(i,&dx,&dy,true);\r
 747                 dx /= 64;\r
 748                 dy /= 64;\r
 749                 INL_AdjustCursor(info,buttons,dx,dy);\r
 750         }\r
 751 }\r
 752 \r
 753 ///////////////////////////////////////////////////////////////////////////\r
 754 //\r
 755 //      IN_ReadControl() - Reads the device associated with the specified\r
 756 //              player and fills in the control info struct\r
 757 //\r
 758 ///////////////////////////////////////////////////////////////////////////\r
 759 void\r
 760 IN_ReadControl(int player,ControlInfo *info)\r
 761 {\r
 762                         boolean         realdelta=false;                                // MDM (GAMERS EDGE)\r
 763                         byte            dbyte;\r
 764                         word            buttons;\r
 765                         int                     dx,dy;\r
 766                         Motion          mx,my;\r
 767                         ControlType     type;\r
 768 register        KeyboardDef     *def;\r
 769 \r
 770         dx = dy = 0;\r
 771         mx = my = motion_None;\r
 772         buttons = 0;\r
 773 \r
 774 #if 0\r
 775         if (DemoMode == demo_Playback)\r
 776         {\r
 777                 dbyte = DemoBuffer[DemoOffset + 1];\r
 778                 my = (dbyte & 3) - 1;\r
 779                 mx = ((dbyte >> 2) & 3) - 1;\r
 780                 buttons = (dbyte >> 4) & 3;\r
 781 \r
 782                 if (!(--DemoBuffer[DemoOffset]))\r
 783                 {\r
 784                         DemoOffset += 2;\r
 785                         if (DemoOffset >= DemoSize)\r
 786                                 DemoMode = demo_PlayDone;\r
 787                 }\r
 788 \r
 789                 realdelta = false;\r
 790         }\r
 791         else if (DemoMode == demo_PlayDone)\r
 792                 Quit("Demo playback exceeded");\r
 793         else\r
 794 #endif\r
 795         {\r
 796                                                                                                                         // MDM begin (GAMERS EDGE) - added this block\r
 797                 ControlTypeUsed = ctrl_None;\r
 798 \r
 799                 // Handle mouse input...\r
 800                 //\r
 801                 if ((MousePresent) && (ControlTypeUsed == ctrl_None))\r
 802                 {\r
 803                         INL_GetMouseDelta(&dx,&dy);\r
 804                         buttons = INL_GetMouseButtons();\r
 805                         realdelta = true;\r
 806                         if (dx || dy || buttons)\r
 807                                 ControlTypeUsed = ctrl_Mouse;\r
 808                 }\r
 809 \r
 810                 // Handle joystick input...\r
 811                 //\r
 812                 if ((JoystickCalibrated) && (ControlTypeUsed == ctrl_None))\r
 813                 {\r
 814                         type = ctrl_Joystick1;\r
 815                         INL_GetJoyDelta(type - ctrl_Joystick,&dx,&dy,false);\r
 816                         buttons = INL_GetJoyButtons(type - ctrl_Joystick);\r
 817                         realdelta = true;\r
 818                         if (dx || dy || buttons)\r
 819                                 ControlTypeUsed = ctrl_Joystick;\r
 820                 }\r
 821 \r
 822                 // Handle keyboard input...\r
 823                 //\r
 824                 if (ControlTypeUsed == ctrl_None)\r
 825                 {\r
 826                         type = ctrl_Keyboard1;\r
 827                         def = &KbdDefs[type - ctrl_Keyboard];\r
 828 \r
 829                         if (Keyboard[def->upleft])\r
 830                                 mx = motion_Left,my = motion_Up;\r
 831                         else if (Keyboard[def->upright])\r
 832                                 mx = motion_Right,my = motion_Up;\r
 833                         else if (Keyboard[def->downleft])\r
 834                                 mx = motion_Left,my = motion_Down;\r
 835                         else if (Keyboard[def->downright])\r
 836                                 mx = motion_Right,my = motion_Down;\r
 837 \r
 838                         if (Keyboard[def->up])\r
 839                                 my = motion_Up;\r
 840                         else if (Keyboard[def->down])\r
 841                                 my = motion_Down;\r
 842 \r
 843                         if (Keyboard[def->left])\r
 844                                 mx = motion_Left;\r
 845                         else if (Keyboard[def->right])\r
 846                                 mx = motion_Right;\r
 847 \r
 848                         if (Keyboard[def->button0])\r
 849                                 buttons += 1 << 0;\r
 850                         if (Keyboard[def->button1])\r
 851                                 buttons += 1 << 1;\r
 852                         realdelta = false;\r
 853                         if (mx || my || buttons)\r
 854                                 ControlTypeUsed = ctrl_Keyboard;\r
 855                 }                                                                                                       // MDM end (GAMERS EDGE)\r
 856         }\r
 857 \r
 858         if (realdelta)\r
 859         {\r
 860                 mx = (dx < 0)? motion_Left : ((dx > 0)? motion_Right : motion_None);\r
 861                 my = (dy < 0)? motion_Up : ((dy > 0)? motion_Down : motion_None);\r
 862         }\r
 863         else\r
 864         {\r
 865                 dx = mx * 127;\r
 866                 dy = my * 127;\r
 867         }\r
 868 \r
 869         info->x = dx;\r
 870         info->xaxis = mx;\r
 871         info->y = dy;\r
 872         info->yaxis = my;\r
 873         info->button0 = buttons & (1 << 0);\r
 874         info->button1 = buttons & (1 << 1);\r
 875         info->dir = DirTable[((my + 1) * 3) + (mx + 1)];\r
 876 \r
 877 #if 0\r
 878         if (DemoMode == demo_Record)\r
 879         {\r
 880                 // Pack the control info into a byte\r
 881                 dbyte = (buttons << 4) | ((mx + 1) << 2) | (my + 1);\r
 882 \r
 883                 if\r
 884                 (\r
 885                         (DemoBuffer[DemoOffset + 1] == dbyte)\r
 886                 &&      (DemoBuffer[DemoOffset] < 255)\r
 887                 )\r
 888                         (DemoBuffer[DemoOffset])++;\r
 889                 else\r
 890                 {\r
 891                         if (DemoOffset || DemoBuffer[DemoOffset])\r
 892                                 DemoOffset += 2;\r
 893 \r
 894                         if (DemoOffset >= DemoSize)\r
 895                                 Quit("Demo buffer overflow");\r
 896 \r
 897                         DemoBuffer[DemoOffset] = 1;\r
 898                         DemoBuffer[DemoOffset + 1] = dbyte;\r
 899                 }\r
 900         }\r
 901 #endif\r
 902 }\r
 903 \r
 904 #if 0\r
 905 ///////////////////////////////////////////////////////////////////////////\r
 906 //\r
 907 //      IN_ReadControl() - Reads the device associated with the specified\r
 908 //              player and fills in the control info struct\r
 909 //\r
 910 ///////////////////////////////////////////////////////////////////////////\r
 911 void\r
 912 IN_ReadControl(int player,ControlInfo *info)\r
 913 {\r
 914                         boolean         realdelta;\r
 915                         byte            dbyte;\r
 916                         word            buttons;\r
 917                         int                     dx,dy;\r
 918                         Motion          mx,my;\r
 919                         ControlType     type;\r
 920 register        KeyboardDef     *def;\r
 921 \r
 922         dx = dy = 0;\r
 923         mx = my = motion_None;\r
 924         buttons = 0;\r
 925 \r
 926 #if 0\r
 927         if (DemoMode == demo_Playback)\r
 928         {\r
 929                 dbyte = DemoBuffer[DemoOffset + 1];\r
 930                 my = (dbyte & 3) - 1;\r
 931                 mx = ((dbyte >> 2) & 3) - 1;\r
 932                 buttons = (dbyte >> 4) & 3;\r
 933 \r
 934                 if (!(--DemoBuffer[DemoOffset]))\r
 935                 {\r
 936                         DemoOffset += 2;\r
 937                         if (DemoOffset >= DemoSize)\r
 938                                 DemoMode = demo_PlayDone;\r
 939                 }\r
 940 \r
 941                 realdelta = false;\r
 942         }\r
 943         else if (DemoMode == demo_PlayDone)\r
 944                 Quit("Demo playback exceeded");\r
 945         else\r
 946 #endif\r
 947         {\r
 948                 switch (type = Controls[player])\r
 949                 {\r
 950                 case ctrl_Keyboard1:\r
 951                 case ctrl_Keyboard2:\r
 952                         def = &KbdDefs[type - ctrl_Keyboard];\r
 953 \r
 954                         if (Keyboard[def->upleft])\r
 955                                 mx = motion_Left,my = motion_Up;\r
 956                         else if (Keyboard[def->upright])\r
 957                                 mx = motion_Right,my = motion_Up;\r
 958                         else if (Keyboard[def->downleft])\r
 959                                 mx = motion_Left,my = motion_Down;\r
 960                         else if (Keyboard[def->downright])\r
 961                                 mx = motion_Right,my = motion_Down;\r
 962 \r
 963                         if (Keyboard[def->up])\r
 964                                 my = motion_Up;\r
 965                         else if (Keyboard[def->down])\r
 966                                 my = motion_Down;\r
 967 \r
 968                         if (Keyboard[def->left])\r
 969                                 mx = motion_Left;\r
 970                         else if (Keyboard[def->right])\r
 971                                 mx = motion_Right;\r
 972 \r
 973                         if (Keyboard[def->button0])\r
 974                                 buttons += 1 << 0;\r
 975                         if (Keyboard[def->button1])\r
 976                                 buttons += 1 << 1;\r
 977                         realdelta = false;\r
 978                         break;\r
 979                 case ctrl_Joystick1:\r
 980                 case ctrl_Joystick2:\r
 981                         INL_GetJoyDelta(type - ctrl_Joystick,&dx,&dy,false);\r
 982                         buttons = INL_GetJoyButtons(type - ctrl_Joystick);\r
 983                         realdelta = true;\r
 984                         break;\r
 985                 case ctrl_Mouse:\r
 986                         INL_GetMouseDelta(&dx,&dy);\r
 987                         buttons = INL_GetMouseButtons();\r
 988                         realdelta = true;\r
 989                         break;\r
 990                 }\r
 991         }\r
 992 \r
 993         if (realdelta)\r
 994         {\r
 995                 mx = (dx < 0)? motion_Left : ((dx > 0)? motion_Right : motion_None);\r
 996                 my = (dy < 0)? motion_Up : ((dy > 0)? motion_Down : motion_None);\r
 997         }\r
 998         else\r
 999         {\r
1000                 dx = mx * 127;\r
1001                 dy = my * 127;\r
1002         }\r
1003 \r
1004         info->x = dx;\r
1005         info->xaxis = mx;\r
1006         info->y = dy;\r
1007         info->yaxis = my;\r
1008         info->button0 = buttons & (1 << 0);\r
1009         info->button1 = buttons & (1 << 1);\r
1010         info->dir = DirTable[((my + 1) * 3) + (mx + 1)];\r
1011 \r
1012 #if 0\r
1013         if (DemoMode == demo_Record)\r
1014         {\r
1015                 // Pack the control info into a byte\r
1016                 dbyte = (buttons << 4) | ((mx + 1) << 2) | (my + 1);\r
1017 \r
1018                 if\r
1019                 (\r
1020                         (DemoBuffer[DemoOffset + 1] == dbyte)\r
1021                 &&      (DemoBuffer[DemoOffset] < 255)\r
1022                 )\r
1023                         (DemoBuffer[DemoOffset])++;\r
1024                 else\r
1025                 {\r
1026                         if (DemoOffset || DemoBuffer[DemoOffset])\r
1027                                 DemoOffset += 2;\r
1028 \r
1029                         if (DemoOffset >= DemoSize)\r
1030                                 Quit("Demo buffer overflow");\r
1031 \r
1032                         DemoBuffer[DemoOffset] = 1;\r
1033                         DemoBuffer[DemoOffset + 1] = dbyte;\r
1034                 }\r
1035         }\r
1036 #endif\r
1037 }\r
1038 #endif\r
1039 \r
1040 ///////////////////////////////////////////////////////////////////////////\r
1041 //\r
1042 //      IN_SetControlType() - Sets the control type to be used by the specified\r
1043 //              player\r
1044 //\r
1045 ///////////////////////////////////////////////////////////////////////////\r
1046 void\r
1047 IN_SetControlType(int player,ControlType type)\r
1048 {\r
1049         // DEBUG - check that requested type is present?\r
1050         Controls[player] = type;\r
1051 }\r
1052 \r
1053 #if 0\r
1054 ///////////////////////////////////////////////////////////////////////////\r
1055 //\r
1056 //      IN_StartDemoRecord() - Starts the demo recording, using a buffer the\r
1057 //              size passed. Returns if the buffer allocation was successful\r
1058 //\r
1059 ///////////////////////////////////////////////////////////////////////////\r
1060 boolean\r
1061 IN_StartDemoRecord(word bufsize)\r
1062 {\r
1063         if (!bufsize)\r
1064                 return(false);\r
1065 \r
1066         MM_GetPtr((memptr *)&DemoBuffer,bufsize);\r
1067         DemoMode = demo_Record;\r
1068         DemoSize = bufsize & ~1;\r
1069         DemoOffset = 0;\r
1070         DemoBuffer[0] = DemoBuffer[1] = 0;\r
1071 \r
1072         return(true);\r
1073 }\r
1074 \r
1075 ///////////////////////////////////////////////////////////////////////////\r
1076 //\r
1077 //      IN_StartDemoPlayback() - Plays back the demo pointed to of the given size\r
1078 //\r
1079 ///////////////////////////////////////////////////////////////////////////\r
1080 void\r
1081 IN_StartDemoPlayback(byte /*_1seg*/ *buffer,word bufsize)\r
1082 {\r
1083         DemoBuffer = buffer;\r
1084         DemoMode = demo_Playback;\r
1085         DemoSize = bufsize & ~1;\r
1086         DemoOffset = 0;\r
1087 }\r
1088 \r
1089 ///////////////////////////////////////////////////////////////////////////\r
1090 //\r
1091 //      IN_StopDemo() - Turns off demo mode\r
1092 //\r
1093 ///////////////////////////////////////////////////////////////////////////\r
1094 void\r
1095 IN_StopDemo(void)\r
1096 {\r
1097         if ((DemoMode == demo_Record) && DemoOffset)\r
1098                 DemoOffset += 2;\r
1099 \r
1100         DemoMode = demo_Off;\r
1101 }\r
1102 \r
1103 ///////////////////////////////////////////////////////////////////////////\r
1104 //\r
1105 //      IN_FreeDemoBuffer() - Frees the demo buffer, if it's been allocated\r
1106 //\r
1107 ///////////////////////////////////////////////////////////////////////////\r
1108 void\r
1109 IN_FreeDemoBuffer(void)\r
1110 {\r
1111         if (DemoBuffer)\r
1112                 MM_FreePtr((memptr *)&DemoBuffer);\r
1113 }\r
1114 #endif\r
1115 \r
1116 \r
1117 #if 0\r
1118 ///////////////////////////////////////////////////////////////////////////\r
1119 //\r
1120 //      IN_GetScanName() - Returns a string containing the name of the\r
1121 //              specified scan code\r
1122 //\r
1123 ///////////////////////////////////////////////////////////////////////////\r
1124 byte *\r
1125 IN_GetScanName(ScanCode scan)\r
1126 {\r
1127         byte            **p;\r
1128         ScanCode        far *s;\r
1129 \r
1130         for (s = ExtScanCodes,p = ExtScanNames;*s;p++,s++)\r
1131                 if (*s == scan)\r
1132                         return(*p);\r
1133 \r
1134         return(ScanNames[scan]);\r
1135 }\r
1136 #endif\r
1137 \r
1138 \r
1139 ///////////////////////////////////////////////////////////////////////////\r
1140 //\r
1141 //      IN_WaitForKey() - Waits for a scan code, then clears LastScan and\r
1142 //              returns the scan code\r
1143 //\r
1144 ///////////////////////////////////////////////////////////////////////////\r
1145 ScanCode\r
1146 IN_WaitForKey(void)\r
1147 {\r
1148         ScanCode        result;\r
1149 \r
1150         while (!(result = LastScan))\r
1151                 ;\r
1152         LastScan = 0;\r
1153         return(result);\r
1154 }\r
1155 \r
1156 ///////////////////////////////////////////////////////////////////////////\r
1157 //\r
1158 //      IN_WaitForASCII() - Waits for an ASCII char, then clears LastASCII and\r
1159 //              returns the ASCII value\r
1160 //\r
1161 ///////////////////////////////////////////////////////////////////////////\r
1162 char\r
1163 IN_WaitForASCII(void)\r
1164 {\r
1165         char            result;\r
1166 \r
1167         while (!(result = LastASCII))\r
1168                 ;\r
1169         LastASCII = '\0';\r
1170         return(result);\r
1171 }\r
1172 \r
1173 ///////////////////////////////////////////////////////////////////////////\r
1174 //\r
1175 //      IN_AckBack() - Waits for either an ASCII keypress or a button press\r
1176 //\r
1177 ///////////////////////////////////////////////////////////////////////////\r
1178 void\r
1179 IN_AckBack(void)\r
1180 {\r
1181         word    i;\r
1182 \r
1183         while (!LastScan)\r
1184         {\r
1185                 if (MousePresent)\r
1186                 {\r
1187                         if (INL_GetMouseButtons())\r
1188                         {\r
1189                                 while (INL_GetMouseButtons())\r
1190                                         ;\r
1191                                 return;\r
1192                         }\r
1193                 }\r
1194 \r
1195                 for (i = 0;i < MaxJoys;i++)\r
1196                 {\r
1197                         if (JoysPresent[i])\r
1198                         {\r
1199                                 if (IN_GetJoyButtonsDB(i))\r
1200                                 {\r
1201                                         while (IN_GetJoyButtonsDB(i))\r
1202                                                 ;\r
1203                                         return;\r
1204                                 }\r
1205                         }\r
1206                 }\r
1207         }\r
1208 \r
1209         IN_ClearKey(LastScan);\r
1210         LastScan = sc_None;\r
1211 }\r
1212 \r
1213 ///////////////////////////////////////////////////////////////////////////\r
1214 //\r
1215 //      IN_Ack() - Clears user input & then calls IN_AckBack()\r
1216 //\r
1217 ///////////////////////////////////////////////////////////////////////////\r
1218 void\r
1219 IN_Ack(void)\r
1220 {\r
1221         word    i;\r
1222 \r
1223         IN_ClearKey(LastScan);\r
1224         LastScan = sc_None;\r
1225 \r
1226         if (MousePresent)\r
1227                 while (INL_GetMouseButtons())\r
1228                                         ;\r
1229         for (i = 0;i < MaxJoys;i++)\r
1230                 if (JoysPresent[i])\r
1231                         while (IN_GetJoyButtonsDB(i))\r
1232                                 ;\r
1233 \r
1234         IN_AckBack();\r
1235 }\r
1236 \r
1237 ///////////////////////////////////////////////////////////////////////////\r
1238 //\r
1239 //      IN_IsUserInput() - Returns true if a key has been pressed or a button\r
1240 //              is down\r
1241 //\r
1242 ///////////////////////////////////////////////////////////////////////////\r
1243 boolean\r
1244 IN_IsUserInput(void)\r
1245 {\r
1246         boolean result;\r
1247         word    i;\r
1248 \r
1249         result = LastScan;\r
1250 \r
1251         if (MousePresent)\r
1252                 if (INL_GetMouseButtons())\r
1253                         result = true;\r
1254 \r
1255         for (i = 0;i < MaxJoys;i++)\r
1256                 if (JoysPresent[i])\r
1257                         if (INL_GetJoyButtons(i))\r
1258                                 result = true;\r
1259 \r
1260         return(result);\r
1261 }\r
1262 \r
1263 ///////////////////////////////////////////////////////////////////////////\r
1264 //\r
1265 //      IN_UserInput() - Waits for the specified delay time (in ticks) or the\r
1266 //              user pressing a key or a mouse button. If the clear flag is set, it\r
1267 //              then either clears the key or waits for the user to let the mouse\r
1268 //              button up.\r
1269 //\r
1270 ///////////////////////////////////////////////////////////////////////////\r
1271 boolean\r
1272 IN_UserInput(dword delay,boolean clear)\r
1273 {\r
1274         dword   lasttime;\r
1275 \r
1276         lasttime = TimeCount;\r
1277         do\r
1278         {\r
1279                 if (IN_IsUserInput())\r
1280                 {\r
1281                         if (clear)\r
1282                                 IN_AckBack();\r
1283                         return(true);\r
1284                 }\r
1285         } while (TimeCount - lasttime < delay);\r
1286         return(false);\r
1287 }\r