input/sdl/key.c

   1 // SDL keyboard input support
   2
   3 #include <conf.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 #include <SDL/SDL.h>
   8
   9 #include "event.h"
  10 #include "error.h"
  11 #include "key.h"
  12 #include "timer.h"
  13
  14 //added on 9/3/98 by Matt Mueller to free some cpu instead of hogging during menus and such
  15 #include "d_delay.h"
  16 //end this section addition - Matt Mueller
  17
  18 #define KEY_BUFFER_SIZE 16
  19
  20 static unsigned char Installed = 0;
  21
  22 //-------- Variable accessed by outside functions ---------
  23 unsigned char           keyd_buffer_type;               // 0=No buffer, 1=buffer ASCII, 2=buffer scans
  24 unsigned char           keyd_repeat;
  25 unsigned char           keyd_editor_mode;
  26 volatile unsigned char  keyd_last_pressed;
  27 volatile unsigned char  keyd_last_released;
  28 volatile unsigned char  keyd_pressed[256];
  29 volatile int            keyd_time_when_last_pressed;
  30
  31 typedef struct Key_info {
  32         ubyte           state;                  // state of key 1 == down, 0 == up
  33         ubyte           last_state;             // previous state of key
  34         int             counter;                // incremented each time key is down in handler
  35         fix             timewentdown;   // simple counter incremented each time in interrupt and key is down
  36         fix             timehelddown;   // counter to tell how long key is down -- gets reset to 0 by key routines
  37         ubyte           downcount;              // number of key counts key was down
  38         ubyte           upcount;                // number of times key was released
  39 } Key_info;
  40
  41 typedef struct keyboard {
  42         unsigned short          keybuffer[KEY_BUFFER_SIZE];
  43         Key_info                keys[256];
  44         fix                     time_pressed[KEY_BUFFER_SIZE];
  45         unsigned int            keyhead, keytail;
  46 } keyboard;
  47
  48 static keyboard key_data;
  49
  50 typedef struct key_props {
  51         char *key_text;
  52         unsigned char ascii_value;
  53         unsigned char shifted_ascii_value;
  54         SDLKey sym;
  55 } key_props;
  56
  57 key_props key_properties[256] = {
  58 { "",       255,    255,    -1                 },
  59 { "ESC",    255,    255,    SDLK_ESCAPE        },
  60 { "1",      '1',    '!',    SDLK_1             },
  61 { "2",      '2',    '@',    SDLK_2             },
  62 { "3",      '3',    '#',    SDLK_3             },
  63 { "4",      '4',    '$',    SDLK_4             },
  64 { "5",      '5',    '%',    SDLK_5             },
  65 { "6",      '6',    '^',    SDLK_6             },
  66 { "7",      '7',    '&',    SDLK_7             },
  67 { "8",      '8',    '*',    SDLK_8             },
  68 { "9",      '9',    '(',    SDLK_9             },
  69 { "0",      '0',    ')',    SDLK_0             },
  70 { "-",      '-',    '_',    SDLK_MINUS         },
  71 { "=",      '=',    '+',    SDLK_EQUALS        },
  72 { "BSPC",   255,    255,    SDLK_BACKSPACE     },
  73 { "TAB",    255,    255,    SDLK_TAB           },
  74 { "Q",      'q',    'Q',    SDLK_q             },
  75 { "W",      'w',    'W',    SDLK_w             },
  76 { "E",      'e',    'E',    SDLK_e             },
  77 { "R",      'r',    'R',    SDLK_r             },
  78 { "T",      't',    'T',    SDLK_t             },
  79 { "Y",      'y',    'Y',    SDLK_y             },
  80 { "U",      'u',    'U',    SDLK_u             },
  81 { "I",      'i',    'I',    SDLK_i             },
  82 { "O",      'o',    'O',    SDLK_o             },
  83 { "P",      'p',    'P',    SDLK_p             },
  84 { "[",      '[',    '{',    SDLK_LEFTBRACKET   },
  85 { "]",      ']',    '}',    SDLK_RIGHTBRACKET  },
  86 //edited 06/08/99 Matt Mueller - set to correct key_text
  87 { "\83",      255,    255,    SDLK_RETURN        },
  88 //end edit -MM
  89 { "LCTRL",  255,    255,    SDLK_LCTRL         },
  90 { "A",      'a',    'A',    SDLK_a             },
  91 { "S",      's',    'S',    SDLK_s             },
  92 { "D",      'd',    'D',    SDLK_d             },
  93 { "F",      'f',    'F',    SDLK_f             },
  94 { "G",      'g',    'G',    SDLK_g             },
  95 { "H",      'h',    'H',    SDLK_h             },
  96 { "J",      'j',    'J',    SDLK_j             },
  97 { "K",      'k',    'K',    SDLK_k             },
  98 { "L",      'l',    'L',    SDLK_l             },
  99 //edited 06/08/99 Matt Mueller - set to correct sym
 100 { ";",      ';',    ':',    SDLK_SEMICOLON         },
 101 //end edit -MM
 102 { "'",      '\'',   '"',    SDLK_QUOTE         },
 103 //edited 06/08/99 Matt Mueller - set to correct sym
 104 { "`",      '`',    '~',    SDLK_BACKQUOTE     },
 105 //end edit -MM
 106 { "LSHFT",  255,    255,    SDLK_LSHIFT        },
 107 { "\\",     '\\',   '|',    SDLK_BACKSLASH     },
 108 { "Z",      'z',    'Z',    SDLK_z             },
 109 { "X",      'x',    'X',    SDLK_x             },
 110 { "C",      'c',    'C',    SDLK_c             },
 111 { "V",      'v',    'V',    SDLK_v             },
 112 { "B",      'b',    'B',    SDLK_b             },
 113 { "N",      'n',    'N',    SDLK_n             },
 114 { "M",      'm',    'M',    SDLK_m             },
 115 //edited 06/08/99 Matt Mueller - set to correct syms
 116 { ",",      ',',    '<',    SDLK_COMMA  },
 117 { ".",      '.',    '>',    SDLK_PERIOD },
 118 { "/",      '/',    '?',    SDLK_SLASH  },
 119 //end edit -MM
 120 { "RSHFT",  255,    255,    SDLK_RSHIFT },
 121 { "PAD*",   '*',    255,    SDLK_KP_MULTIPLY   },
 122 { "LALT",   255,    255,    SDLK_LALT          },
 123 { "SPC",    ' ',    ' ',    SDLK_SPACE         },
 124 { "CPSLK",  255,    255,    SDLK_CAPSLOCK      },
 125 { "F1",     255,    255,    SDLK_F1            },
 126 { "F2",     255,    255,    SDLK_F2            },
 127 { "F3",     255,    255,    SDLK_F3            },
 128 { "F4",     255,    255,    SDLK_F4            },
 129 { "F5",     255,    255,    SDLK_F5            },
 130 { "F6",     255,    255,    SDLK_F6            },
 131 { "F7",     255,    255,    SDLK_F7            },
 132 { "F8",     255,    255,    SDLK_F8            },
 133 { "F9",     255,    255,    SDLK_F9            },
 134 { "F10",    255,    255,    SDLK_F10           },
 135 { "NMLCK",  255,    255,    SDLK_NUMLOCK       },
 136 { "SCLK",   255,    255,    SDLK_SCROLLOCK     },
 137 { "PAD7",   255,    255,    SDLK_KP7           },
 138 { "PAD8",   255,    255,    SDLK_KP8           },
 139 { "PAD9",   255,    255,    SDLK_KP9           },
 140 { "PAD-",   255,    255,    SDLK_KP_MINUS      },
 141 { "PAD4",   255,    255,    SDLK_KP4           },
 142 { "PAD5",   255,    255,    SDLK_KP5           },
 143 { "PAD6",   255,    255,    SDLK_KP6           },
 144 { "PAD+",   255,    255,    SDLK_KP_PLUS       },
 145 { "PAD1",   255,    255,    SDLK_KP1           },
 146 { "PAD2",   255,    255,    SDLK_KP2           },
 147 { "PAD3",   255,    255,    SDLK_KP3           },
 148 { "PAD0",   255,    255,    SDLK_KP0           },
 149 { "PAD.",   255,    255,    SDLK_KP_PERIOD     },
 150 { "",       255,    255,    -1                 },
 151 { "",       255,    255,    -1                 },
 152 { "",       255,    255,    -1                 },
 153 { "F11",    255,    255,    SDLK_F11           },
 154 { "F12",    255,    255,    SDLK_F12           },
 155 { "",       255,    255,    -1                 },
 156 { "",       255,    255,    -1                 },
 157 { "",       255,    255,    -1                 },
 158 { "",       255,    255,    -1                 },
 159 { "",       255,    255,    -1                 },
 160 { "",       255,    255,    -1                 },
 161 { "",       255,    255,    -1                 },
 162 { "",       255,    255,    -1                 },
 163 //edited 06/08/99 Matt Mueller - add pause ability
 164 { "PAUSE",       255,    255,    SDLK_PAUSE                 },
 165 //end edit -MM
 166 { "",       255,    255,    -1                 },
 167 { "",       255,    255,    -1                 },
 168 { "",       255,    255,    -1                 },
 169 { "",       255,    255,    -1                 },
 170 { "",       255,    255,    -1                 },
 171 { "",       255,    255,    -1                 },
 172 { "",       255,    255,    -1                 },
 173 { "",       255,    255,    -1                 },
 174 { "",       255,    255,    -1                 },
 175 { "",       255,    255,    -1                 },
 176 { "",       255,    255,    -1                 },
 177 { "",       255,    255,    -1                 },
 178 { "",       255,    255,    -1                 },
 179 { "",       255,    255,    -1                 },
 180 { "",       255,    255,    -1                 },
 181 { "",       255,    255,    -1                 },
 182 { "",       255,    255,    -1                 },
 183 { "",       255,    255,    -1                 },
 184 { "",       255,    255,    -1                 },
 185 { "",       255,    255,    -1                 },
 186 { "",       255,    255,    -1                 },
 187 { "",       255,    255,    -1                 },
 188 { "",       255,    255,    -1                 },
 189 { "",       255,    255,    -1                 },
 190 { "",       255,    255,    -1                 },
 191 { "",       255,    255,    -1                 },
 192 { "",       255,    255,    -1                 },
 193 { "",       255,    255,    -1                 },
 194 { "",       255,    255,    -1                 },
 195 { "",       255,    255,    -1                 },
 196 { "",       255,    255,    -1                 },
 197 { "",       255,    255,    -1                 },
 198 { "",       255,    255,    -1                 },
 199 { "",       255,    255,    -1                 },
 200 { "",       255,    255,    -1                 },
 201 { "",       255,    255,    -1                 },
 202 { "",       255,    255,    -1                 },
 203 { "",       255,    255,    -1                 },
 204 { "",       255,    255,    -1                 },
 205 { "",       255,    255,    -1                 },
 206 { "",       255,    255,    -1                 },
 207 { "",       255,    255,    -1                 },
 208 { "",       255,    255,    -1                 },
 209 { "",       255,    255,    -1                 },
 210 { "",       255,    255,    -1                 },
 211 { "",       255,    255,    -1                 },
 212 { "",       255,    255,    -1                 },
 213 { "",       255,    255,    -1                 },
 214 { "",       255,    255,    -1                 },
 215 { "",       255,    255,    -1                 },
 216 { "",       255,    255,    -1                 },
 217 { "",       255,    255,    -1                 },
 218 { "",       255,    255,    -1                 },
 219 { "",       255,    255,    -1                 },
 220 { "",       255,    255,    -1                 },
 221 { "",       255,    255,    -1                 },
 222 { "",       255,    255,    -1                 },
 223 { "",       255,    255,    -1                 },
 224 //edited 06/08/99 Matt Mueller - set to correct key_text
 225 { "PAD\83",   255,    255,    SDLK_KP_ENTER      },
 226 //end edit -MM
 227 //edited 06/08/99 Matt Mueller - set to correct sym
 228 { "RCTRL",  255,    255,    SDLK_RCTRL            },
 229 //end edit -MM
 230 { "",       255,    255,    -1                 },
 231 { "",       255,    255,    -1                 },
 232 { "",       255,    255,    -1                 },
 233 { "",       255,    255,    -1                 },
 234 { "",       255,    255,    -1                 },
 235 { "",       255,    255,    -1                 },
 236 { "",       255,    255,    -1                 },
 237 { "",       255,    255,    -1                 },
 238 { "",       255,    255,    -1                 },
 239 { "",       255,    255,    -1                 },
 240 { "",       255,    255,    -1                 },
 241 { "",       255,    255,    -1                 },
 242 { "",       255,    255,    -1                 },
 243 { "",       255,    255,    -1                 },
 244 { "",       255,    255,    -1                 },
 245 { "",       255,    255,    -1                 },
 246 { "",       255,    255,    -1                 },
 247 { "",       255,    255,    -1                 },
 248 { "",       255,    255,    -1                 },
 249 { "",       255,    255,    -1                 },
 250 { "",       255,    255,    -1                 },
 251 { "",       255,    255,    -1                 },
 252 { "",       255,    255,    -1                 },
 253 { "PAD/",   255,    255,    SDLK_KP_DIVIDE     },
 254 { "",       255,    255,    -1                 },
 255 //edited 06/08/99 Matt Mueller - add printscreen ability
 256 { "PRSCR",       255,    255,    SDLK_PRINT                 },
 257 //end edit -MM
 258 { "RALT",   255,    255,    SDLK_RALT          },
 259 { "",       255,    255,    -1                 },
 260 { "",       255,    255,    -1                 },
 261 { "",       255,    255,    -1                 },
 262 { "",       255,    255,    -1                 },
 263 { "",       255,    255,    -1                 },
 264 { "",       255,    255,    -1                 },
 265 { "",       255,    255,    -1                 },
 266 { "",       255,    255,    -1                 },
 267 { "",       255,    255,    -1                 },
 268 { "",       255,    255,    -1                 },
 269 { "",       255,    255,    -1                 },
 270 { "",       255,    255,    -1                 },
 271 { "",       255,    255,    -1                 },
 272 { "",       255,    255,    -1                 },
 273 { "HOME",   255,    255,    SDLK_HOME          },
 274 //edited 06/08/99 Matt Mueller - set to correct key_text
 275 { "UP",         255,    255,    SDLK_UP            },
 276 //end edit -MM
 277 { "PGUP",   255,    255,    SDLK_PAGEUP        },
 278 { "",       255,    255,    -1                 },
 279 //edited 06/08/99 Matt Mueller - set to correct key_text
 280 { "LEFT",       255,    255,    SDLK_LEFT          },
 281 //end edit -MM
 282 { "",       255,    255,    -1                 },
 283 //edited 06/08/99 Matt Mueller - set to correct key_text
 284 { "RIGHT",      255,    255,    SDLK_RIGHT         },
 285 //end edit -MM
 286 { "",       255,    255,    -1                 },
 287 //edited 06/08/99 Matt Mueller - set to correct key_text
 288 { "END",    255,    255,    SDLK_END           },
 289 //end edit -MM
 290 { "DOWN",       255,    255,    SDLK_DOWN          },
 291 { "PGDN",       255,    255,    SDLK_PAGEDOWN      },
 292 { "INS",        255,    255,    SDLK_INSERT        },
 293 { "DEL",        255,    255,    SDLK_DELETE        },
 294 { "",       255,    255,    -1                 },
 295 { "",       255,    255,    -1                 },
 296 { "",       255,    255,    -1                 },
 297 { "",       255,    255,    -1                 },
 298 { "",       255,    255,    -1                 },
 299 { "",       255,    255,    -1                 },
 300 { "",       255,    255,    -1                 },
 301 { "",       255,    255,    -1                 },
 302 { "",       255,    255,    -1                 },
 303 { "",       255,    255,    -1                 },
 304 { "",       255,    255,    -1                 },
 305 { "",       255,    255,    -1                 },
 306 { "",       255,    255,    -1                 },
 307 { "",       255,    255,    -1                 },
 308 { "",       255,    255,    -1                 },
 309 { "",       255,    255,    -1                 },
 310 { "",       255,    255,    -1                 },
 311 { "",       255,    255,    -1                 },
 312 { "",       255,    255,    -1                 },
 313 { "",       255,    255,    -1                 },
 314 { "",       255,    255,    -1                 },
 315 { "",       255,    255,    -1                 },
 316 { "",       255,    255,    -1                 },
 317 { "",       255,    255,    -1                 },
 318 { "",       255,    255,    -1                 },
 319 { "",       255,    255,    -1                 },
 320 { "",       255,    255,    -1                 },
 321 { "",       255,    255,    -1                 },
 322 { "",       255,    255,    -1                 },
 323 { "",       255,    255,    -1                 },
 324 { "",       255,    255,    -1                 },
 325 { "",       255,    255,    -1                 },
 326 { "",       255,    255,    -1                 },
 327 { "",       255,    255,    -1                 },
 328 { "",       255,    255,    -1                 },
 329 { "",       255,    255,    -1                 },
 330 { "",       255,    255,    -1                 },
 331 { "",       255,    255,    -1                 },
 332 { "",       255,    255,    -1                 },
 333 { "",       255,    255,    -1                 },
 334 { "",       255,    255,    -1                 },
 335 { "",       255,    255,    -1                 },
 336 { "",       255,    255,    -1                 },
 337 { "",       255,    255,    -1                 },
 338 };
 339
 340 char *key_text[256];
 341
 342 void key_buid_key_text(void)
 343 {
 344 }
 345
 346 unsigned char key_to_ascii(int keycode )
 347 {
 348         int shifted;
 349
 350         shifted = keycode & KEY_SHIFTED;
 351         keycode &= 0xFF;
 352
 353         if (shifted)
 354                 return key_properties[keycode].shifted_ascii_value;
 355         else
 356                 return key_properties[keycode].ascii_value;
 357 }
 358
 359 void key_handler(SDL_KeyboardEvent *event)
 360 {
 361         ubyte state;
 362         int i, keycode, event_key, key_state;
 363         Key_info *key;
 364         unsigned char temp;
 365
 366         event_key = event->keysym.sym;
 367
 368         key_state = (event->state == SDL_PRESSED); //  !(wInfo & KF_UP);
 369         //=====================================================
 370         //Here a translation from win keycodes to mac keycodes!
 371         //=====================================================
 372
 373         for (i = 255; i >= 0; i--) {
 374
 375                 keycode = i;
 376                 key = &(key_data.keys[keycode]);
 377                 if (key_properties[i].sym == event_key)
 378                         state = key_state;
 379                 else
 380                         state = key->last_state;
 381
 382                 if ( key->last_state == state ) {
 383                         if (state) {
 384                                 key->counter++;
 385                                 keyd_last_pressed = keycode;
 386                                 keyd_time_when_last_pressed = timer_get_fixed_seconds();
 387                         }
 388                 } else {
 389                         if (state)      {
 390                                 keyd_last_pressed = keycode;
 391                                 keyd_pressed[keycode] = 1;
 392                                 key->downcount += state;
 393                                 key->state = 1;
 394                                 key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
 395                                 key->counter++;
 396                         } else {
 397                                 keyd_pressed[keycode] = 0;
 398                                 keyd_last_released = keycode;
 399                                 key->upcount += key->state;
 400                                 key->state = 0;
 401                                 key->counter = 0;
 402                                 key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
 403                         }
 404                 }
 405                 if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
 406                         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
 407                                 keycode |= KEY_SHIFTED;
 408                         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
 409                                 keycode |= KEY_ALTED;
 410                         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
 411                                 keycode |= KEY_CTRLED;
 412                         if ( keyd_pressed[KEY_DELETE] )
 413                                 keycode |= KEY_DEBUGGED;
 414                         temp = key_data.keytail+1;
 415                         if ( temp >= KEY_BUFFER_SIZE ) temp=0;
 416                         if (temp!=key_data.keyhead)     {
 417                                 key_data.keybuffer[key_data.keytail] = keycode;
 418                                 key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
 419                                 key_data.keytail = temp;
 420                         }
 421                 }
 422                 key->last_state = state;
 423         }
 424 }
 425
 426 void key_close()
 427 {
 428  Installed = 0;
 429 }
 430
 431 void key_init()
 432 {
 433   int i;
 434
 435   if (Installed) return;
 436
 437   Installed=1;
 438
 439   keyd_time_when_last_pressed = timer_get_fixed_seconds();
 440   keyd_buffer_type = 1;
 441   keyd_repeat = 1;
 442
 443   for(i=0; i<256; i++)
 444      key_text[i] = key_properties[i].key_text;
 445
 446   // Clear the keyboard array
 447   key_flush();
 448   atexit(key_close);
 449 }
 450
 451 void key_flush()
 452 {
 453         int i;
 454         fix curtime;
 455
 456         if (!Installed)
 457                 key_init();
 458
 459         key_data.keyhead = key_data.keytail = 0;
 460
 461         //Clear the keyboard buffer
 462         for (i=0; i<KEY_BUFFER_SIZE; i++ )      {
 463                 key_data.keybuffer[i] = 0;
 464                 key_data.time_pressed[i] = 0;
 465         }
 466
 467 //use gettimeofday here:
 468         curtime = timer_get_fixed_seconds();
 469
 470         for (i=0; i<256; i++ )  {
 471                 keyd_pressed[i] = 0;
 472                 key_data.keys[i].state = 1;
 473                 key_data.keys[i].last_state = 0;
 474                 key_data.keys[i].timewentdown = curtime;
 475                 key_data.keys[i].downcount=0;
 476                 key_data.keys[i].upcount=0;
 477                 key_data.keys[i].timehelddown = 0;
 478                 key_data.keys[i].counter = 0;
 479         }
 480 }
 481
 482 int add_one(int n)
 483 {
 484  n++;
 485  if ( n >= KEY_BUFFER_SIZE ) n=0;
 486  return n;
 487 }
 488
 489 int key_checkch()
 490 {
 491         int is_one_waiting = 0;
 492         event_poll();
 493         if (key_data.keytail!=key_data.keyhead)
 494                 is_one_waiting = 1;
 495         return is_one_waiting;
 496 }
 497
 498 int key_inkey()
 499 {
 500         int key = 0;
 501         if (!Installed)
 502                 key_init();
 503         event_poll();
 504         if (key_data.keytail!=key_data.keyhead) {
 505                 key = key_data.keybuffer[key_data.keyhead];
 506                 key_data.keyhead = add_one(key_data.keyhead);
 507         }
 508 //added 9/3/98 by Matt Mueller to free cpu time instead of hogging during menus and such
 509         else d_delay(1);
 510 //end addition - Matt Mueller
 511
 512         return key;
 513 }
 514
 515 int key_inkey_time(fix * time)
 516 {
 517         int key = 0;
 518
 519         if (!Installed)
 520                 key_init();
 521         event_poll();
 522         if (key_data.keytail!=key_data.keyhead) {
 523                 key = key_data.keybuffer[key_data.keyhead];
 524                 *time = key_data.time_pressed[key_data.keyhead];
 525                 key_data.keyhead = add_one(key_data.keyhead);
 526         }
 527         return key;
 528 }
 529
 530 int key_peekkey()
 531 {
 532         int key = 0;
 533         event_poll();
 534         if (key_data.keytail!=key_data.keyhead)
 535                 key = key_data.keybuffer[key_data.keyhead];
 536
 537         return key;
 538 }
 539
 540 int key_getch()
 541 {
 542         int dummy=0;
 543
 544         if (!Installed)
 545                 return 0;
 546 //              return getch();
 547
 548         while (!key_checkch())
 549                 dummy++;
 550         return key_inkey();
 551 }
 552
 553 unsigned int key_get_shift_status()
 554 {
 555         unsigned int shift_status = 0;
 556
 557         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
 558                 shift_status |= KEY_SHIFTED;
 559
 560         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
 561                 shift_status |= KEY_ALTED;
 562
 563         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
 564                 shift_status |= KEY_CTRLED;
 565
 566 #ifndef NDEBUG
 567         if (keyd_pressed[KEY_DELETE])
 568                 shift_status |=KEY_DEBUGGED;
 569 #endif
 570
 571         return shift_status;
 572 }
 573
 574 // Returns the number of seconds this key has been down since last call.
 575 fix key_down_time(int scancode)
 576 {
 577         fix time_down, time;
 578
 579         event_poll();
 580         if ((scancode<0)|| (scancode>255)) return 0;
 581
 582         if (!keyd_pressed[scancode]) {
 583                 time_down = key_data.keys[scancode].timehelddown;
 584                 key_data.keys[scancode].timehelddown = 0;
 585         } else {
 586                 time = timer_get_fixed_seconds();
 587                 time_down = time - key_data.keys[scancode].timewentdown;
 588                 key_data.keys[scancode].timewentdown = time;
 589         }
 590
 591         return time_down;
 592 }
 593
 594 unsigned int key_down_count(int scancode)
 595 {
 596         int n;
 597         event_poll();
 598         if ((scancode<0)|| (scancode>255)) return 0;
 599
 600         n = key_data.keys[scancode].downcount;
 601         key_data.keys[scancode].downcount = 0;
 602
 603         return n;
 604 }
 605
 606 unsigned int key_up_count(int scancode)
 607 {
 608         int n;
 609         event_poll();
 610         if ((scancode<0)|| (scancode>255)) return 0;
 611
 612         n = key_data.keys[scancode].upcount;
 613         key_data.keys[scancode].upcount = 0;
 614
 615         return n;
 616 }