arch/sdl/key.c

   1 /* $Id: key.c,v 1.2 2003-01-15 02:42:41 btb Exp $ */
   2 /*
   3  *
   4  * SDL keyboard input support
   5  *
   6  *
   7  */
   8
   9 #ifdef HAVE_CONFIG_H
  10 #include <conf.h>
  11 #endif
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15
  16 #include <SDL.h>
  17
  18 #include "event.h"
  19 #include "error.h"
  20 #include "key.h"
  21 #include "timer.h"
  22
  23 //added on 9/3/98 by Matt Mueller to free some cpu instead of hogging during menus and such
  24 #include "d_delay.h"
  25 //end this section addition - Matt Mueller
  26
  27 #define KEY_BUFFER_SIZE 16
  28
  29 static unsigned char Installed = 0;
  30
  31 //-------- Variable accessed by outside functions ---------
  32 unsigned char           keyd_buffer_type;               // 0=No buffer, 1=buffer ASCII, 2=buffer scans
  33 unsigned char           keyd_repeat;
  34 unsigned char           keyd_editor_mode;
  35 volatile unsigned char  keyd_last_pressed;
  36 volatile unsigned char  keyd_last_released;
  37 volatile unsigned char  keyd_pressed[256];
  38 volatile int            keyd_time_when_last_pressed;
  39
  40 typedef struct Key_info {
  41         ubyte           state;                  // state of key 1 == down, 0 == up
  42         ubyte           last_state;             // previous state of key
  43         int             counter;                // incremented each time key is down in handler
  44         fix             timewentdown;   // simple counter incremented each time in interrupt and key is down
  45         fix             timehelddown;   // counter to tell how long key is down -- gets reset to 0 by key routines
  46         ubyte           downcount;              // number of key counts key was down
  47         ubyte           upcount;                // number of times key was released
  48 } Key_info;
  49
  50 typedef struct keyboard {
  51         unsigned short          keybuffer[KEY_BUFFER_SIZE];
  52         Key_info                keys[256];
  53         fix                     time_pressed[KEY_BUFFER_SIZE];
  54         unsigned int            keyhead, keytail;
  55 } keyboard;
  56
  57 static keyboard key_data;
  58
  59 typedef struct key_props {
  60         char *key_text;
  61         unsigned char ascii_value;
  62         unsigned char shifted_ascii_value;
  63         SDLKey sym;
  64 } key_props;
  65
  66 key_props key_properties[256] = {
  67 { "",       255,    255,    -1                 },
  68 { "ESC",    255,    255,    SDLK_ESCAPE        },
  69 { "1",      '1',    '!',    SDLK_1             },
  70 { "2",      '2',    '@',    SDLK_2             },
  71 { "3",      '3',    '#',    SDLK_3             },
  72 { "4",      '4',    '$',    SDLK_4             },
  73 { "5",      '5',    '%',    SDLK_5             },
  74 { "6",      '6',    '^',    SDLK_6             },
  75 { "7",      '7',    '&',    SDLK_7             },
  76 { "8",      '8',    '*',    SDLK_8             },
  77 { "9",      '9',    '(',    SDLK_9             },
  78 { "0",      '0',    ')',    SDLK_0             },
  79 { "-",      '-',    '_',    SDLK_MINUS         },
  80 { "=",      '=',    '+',    SDLK_EQUALS        },
  81 { "BSPC",   255,    255,    SDLK_BACKSPACE     },
  82 { "TAB",    255,    255,    SDLK_TAB           },
  83 { "Q",      'q',    'Q',    SDLK_q             },
  84 { "W",      'w',    'W',    SDLK_w             },
  85 { "E",      'e',    'E',    SDLK_e             },
  86 { "R",      'r',    'R',    SDLK_r             },
  87 { "T",      't',    'T',    SDLK_t             },
  88 { "Y",      'y',    'Y',    SDLK_y             },
  89 { "U",      'u',    'U',    SDLK_u             },
  90 { "I",      'i',    'I',    SDLK_i             },
  91 { "O",      'o',    'O',    SDLK_o             },
  92 { "P",      'p',    'P',    SDLK_p             },
  93 { "[",      '[',    '{',    SDLK_LEFTBRACKET   },
  94 { "]",      ']',    '}',    SDLK_RIGHTBRACKET  },
  95 //edited 06/08/99 Matt Mueller - set to correct key_text
  96 { "\83",      255,    255,    SDLK_RETURN        },
  97 //end edit -MM
  98 { "LCTRL",  255,    255,    SDLK_LCTRL         },
  99 { "A",      'a',    'A',    SDLK_a             },
 100 { "S",      's',    'S',    SDLK_s             },
 101 { "D",      'd',    'D',    SDLK_d             },
 102 { "F",      'f',    'F',    SDLK_f             },
 103 { "G",      'g',    'G',    SDLK_g             },
 104 { "H",      'h',    'H',    SDLK_h             },
 105 { "J",      'j',    'J',    SDLK_j             },
 106 { "K",      'k',    'K',    SDLK_k             },
 107 { "L",      'l',    'L',    SDLK_l             },
 108 //edited 06/08/99 Matt Mueller - set to correct sym
 109 { ";",      ';',    ':',    SDLK_SEMICOLON         },
 110 //end edit -MM
 111 { "'",      '\'',   '"',    SDLK_QUOTE         },
 112 //edited 06/08/99 Matt Mueller - set to correct sym
 113 { "`",      '`',    '~',    SDLK_BACKQUOTE     },
 114 //end edit -MM
 115 { "LSHFT",  255,    255,    SDLK_LSHIFT        },
 116 { "\\",     '\\',   '|',    SDLK_BACKSLASH     },
 117 { "Z",      'z',    'Z',    SDLK_z             },
 118 { "X",      'x',    'X',    SDLK_x             },
 119 { "C",      'c',    'C',    SDLK_c             },
 120 { "V",      'v',    'V',    SDLK_v             },
 121 { "B",      'b',    'B',    SDLK_b             },
 122 { "N",      'n',    'N',    SDLK_n             },
 123 { "M",      'm',    'M',    SDLK_m             },
 124 //edited 06/08/99 Matt Mueller - set to correct syms
 125 { ",",      ',',    '<',    SDLK_COMMA  },
 126 { ".",      '.',    '>',    SDLK_PERIOD },
 127 { "/",      '/',    '?',    SDLK_SLASH  },
 128 //end edit -MM
 129 { "RSHFT",  255,    255,    SDLK_RSHIFT },
 130 { "PAD*",   '*',    255,    SDLK_KP_MULTIPLY   },
 131 { "LALT",   255,    255,    SDLK_LALT          },
 132 { "SPC",    ' ',    ' ',    SDLK_SPACE         },
 133 { "CPSLK",  255,    255,    SDLK_CAPSLOCK      },
 134 { "F1",     255,    255,    SDLK_F1            },
 135 { "F2",     255,    255,    SDLK_F2            },
 136 { "F3",     255,    255,    SDLK_F3            },
 137 { "F4",     255,    255,    SDLK_F4            },
 138 { "F5",     255,    255,    SDLK_F5            },
 139 { "F6",     255,    255,    SDLK_F6            },
 140 { "F7",     255,    255,    SDLK_F7            },
 141 { "F8",     255,    255,    SDLK_F8            },
 142 { "F9",     255,    255,    SDLK_F9            },
 143 { "F10",    255,    255,    SDLK_F10           },
 144 { "NMLCK",  255,    255,    SDLK_NUMLOCK       },
 145 { "SCLK",   255,    255,    SDLK_SCROLLOCK     },
 146 { "PAD7",   255,    255,    SDLK_KP7           },
 147 { "PAD8",   255,    255,    SDLK_KP8           },
 148 { "PAD9",   255,    255,    SDLK_KP9           },
 149 { "PAD-",   255,    255,    SDLK_KP_MINUS      },
 150 { "PAD4",   255,    255,    SDLK_KP4           },
 151 { "PAD5",   255,    255,    SDLK_KP5           },
 152 { "PAD6",   255,    255,    SDLK_KP6           },
 153 { "PAD+",   255,    255,    SDLK_KP_PLUS       },
 154 { "PAD1",   255,    255,    SDLK_KP1           },
 155 { "PAD2",   255,    255,    SDLK_KP2           },
 156 { "PAD3",   255,    255,    SDLK_KP3           },
 157 { "PAD0",   255,    255,    SDLK_KP0           },
 158 { "PAD.",   255,    255,    SDLK_KP_PERIOD     },
 159 { "",       255,    255,    -1                 },
 160 { "",       255,    255,    -1                 },
 161 { "",       255,    255,    -1                 },
 162 { "F11",    255,    255,    SDLK_F11           },
 163 { "F12",    255,    255,    SDLK_F12           },
 164 { "",       255,    255,    -1                 },
 165 { "",       255,    255,    -1                 },
 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 //edited 06/08/99 Matt Mueller - add pause ability
 173 { "PAUSE",       255,    255,    SDLK_PAUSE                 },
 174 //end edit -MM
 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 { "",       255,    255,    -1                 },
 225 { "",       255,    255,    -1                 },
 226 { "",       255,    255,    -1                 },
 227 { "",       255,    255,    -1                 },
 228 { "",       255,    255,    -1                 },
 229 { "",       255,    255,    -1                 },
 230 { "",       255,    255,    -1                 },
 231 { "",       255,    255,    -1                 },
 232 { "",       255,    255,    -1                 },
 233 //edited 06/08/99 Matt Mueller - set to correct key_text
 234 { "PAD\83",   255,    255,    SDLK_KP_ENTER      },
 235 //end edit -MM
 236 //edited 06/08/99 Matt Mueller - set to correct sym
 237 { "RCTRL",  255,    255,    SDLK_RCTRL            },
 238 //end edit -MM
 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 { "",       255,    255,    -1                 },
 254 { "",       255,    255,    -1                 },
 255 { "",       255,    255,    -1                 },
 256 { "",       255,    255,    -1                 },
 257 { "",       255,    255,    -1                 },
 258 { "",       255,    255,    -1                 },
 259 { "",       255,    255,    -1                 },
 260 { "",       255,    255,    -1                 },
 261 { "",       255,    255,    -1                 },
 262 { "PAD/",   255,    255,    SDLK_KP_DIVIDE     },
 263 { "",       255,    255,    -1                 },
 264 //edited 06/08/99 Matt Mueller - add printscreen ability
 265 { "PRSCR",       255,    255,    SDLK_PRINT                 },
 266 //end edit -MM
 267 { "RALT",   255,    255,    SDLK_RALT          },
 268 { "",       255,    255,    -1                 },
 269 { "",       255,    255,    -1                 },
 270 { "",       255,    255,    -1                 },
 271 { "",       255,    255,    -1                 },
 272 { "",       255,    255,    -1                 },
 273 { "",       255,    255,    -1                 },
 274 { "",       255,    255,    -1                 },
 275 { "",       255,    255,    -1                 },
 276 { "",       255,    255,    -1                 },
 277 { "",       255,    255,    -1                 },
 278 { "",       255,    255,    -1                 },
 279 { "",       255,    255,    -1                 },
 280 { "",       255,    255,    -1                 },
 281 { "",       255,    255,    -1                 },
 282 { "HOME",   255,    255,    SDLK_HOME          },
 283 //edited 06/08/99 Matt Mueller - set to correct key_text
 284 { "UP",         255,    255,    SDLK_UP            },
 285 //end edit -MM
 286 { "PGUP",   255,    255,    SDLK_PAGEUP        },
 287 { "",       255,    255,    -1                 },
 288 //edited 06/08/99 Matt Mueller - set to correct key_text
 289 { "LEFT",       255,    255,    SDLK_LEFT          },
 290 //end edit -MM
 291 { "",       255,    255,    -1                 },
 292 //edited 06/08/99 Matt Mueller - set to correct key_text
 293 { "RIGHT",      255,    255,    SDLK_RIGHT         },
 294 //end edit -MM
 295 { "",       255,    255,    -1                 },
 296 //edited 06/08/99 Matt Mueller - set to correct key_text
 297 { "END",    255,    255,    SDLK_END           },
 298 //end edit -MM
 299 { "DOWN",       255,    255,    SDLK_DOWN          },
 300 { "PGDN",       255,    255,    SDLK_PAGEDOWN      },
 301 { "INS",        255,    255,    SDLK_INSERT        },
 302 { "DEL",        255,    255,    SDLK_DELETE        },
 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 { "",       255,    255,    -1                 },
 339 { "",       255,    255,    -1                 },
 340 { "",       255,    255,    -1                 },
 341 { "",       255,    255,    -1                 },
 342 { "",       255,    255,    -1                 },
 343 { "",       255,    255,    -1                 },
 344 { "",       255,    255,    -1                 },
 345 { "",       255,    255,    -1                 },
 346 { "",       255,    255,    -1                 },
 347 };
 348
 349 char *key_text[256];
 350
 351 void key_buid_key_text(void)
 352 {
 353 }
 354
 355 unsigned char key_to_ascii(int keycode )
 356 {
 357         int shifted;
 358
 359         shifted = keycode & KEY_SHIFTED;
 360         keycode &= 0xFF;
 361
 362         if (shifted)
 363                 return key_properties[keycode].shifted_ascii_value;
 364         else
 365                 return key_properties[keycode].ascii_value;
 366 }
 367
 368 void key_handler(SDL_KeyboardEvent *event)
 369 {
 370         ubyte state;
 371         int i, keycode, event_key, key_state;
 372         Key_info *key;
 373         unsigned char temp;
 374
 375         event_key = event->keysym.sym;
 376
 377         key_state = (event->state == SDL_PRESSED); //  !(wInfo & KF_UP);
 378         //=====================================================
 379         //Here a translation from win keycodes to mac keycodes!
 380         //=====================================================
 381
 382         for (i = 255; i >= 0; i--) {
 383
 384                 keycode = i;
 385                 key = &(key_data.keys[keycode]);
 386                 if (key_properties[i].sym == event_key)
 387                         state = key_state;
 388                 else
 389                         state = key->last_state;
 390
 391                 if ( key->last_state == state ) {
 392                         if (state) {
 393                                 key->counter++;
 394                                 keyd_last_pressed = keycode;
 395                                 keyd_time_when_last_pressed = timer_get_fixed_seconds();
 396                         }
 397                 } else {
 398                         if (state)      {
 399                                 keyd_last_pressed = keycode;
 400                                 keyd_pressed[keycode] = 1;
 401                                 key->downcount += state;
 402                                 key->state = 1;
 403                                 key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
 404                                 key->counter++;
 405                         } else {
 406                                 keyd_pressed[keycode] = 0;
 407                                 keyd_last_released = keycode;
 408                                 key->upcount += key->state;
 409                                 key->state = 0;
 410                                 key->counter = 0;
 411                                 key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
 412                         }
 413                 }
 414                 if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
 415                         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
 416                                 keycode |= KEY_SHIFTED;
 417                         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
 418                                 keycode |= KEY_ALTED;
 419                         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
 420                                 keycode |= KEY_CTRLED;
 421                         if ( keyd_pressed[KEY_DELETE] )
 422                                 keycode |= KEY_DEBUGGED;
 423                         temp = key_data.keytail+1;
 424                         if ( temp >= KEY_BUFFER_SIZE ) temp=0;
 425                         if (temp!=key_data.keyhead)     {
 426                                 key_data.keybuffer[key_data.keytail] = keycode;
 427                                 key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
 428                                 key_data.keytail = temp;
 429                         }
 430                 }
 431                 key->last_state = state;
 432         }
 433 }
 434
 435 void key_close()
 436 {
 437  Installed = 0;
 438 }
 439
 440 void key_init()
 441 {
 442   int i;
 443
 444   if (Installed) return;
 445
 446   Installed=1;
 447
 448   keyd_time_when_last_pressed = timer_get_fixed_seconds();
 449   keyd_buffer_type = 1;
 450   keyd_repeat = 1;
 451
 452   for(i=0; i<256; i++)
 453      key_text[i] = key_properties[i].key_text;
 454
 455   // Clear the keyboard array
 456   key_flush();
 457   atexit(key_close);
 458 }
 459
 460 void key_flush()
 461 {
 462         int i;
 463         fix curtime;
 464
 465         if (!Installed)
 466                 key_init();
 467
 468         key_data.keyhead = key_data.keytail = 0;
 469
 470         //Clear the keyboard buffer
 471         for (i=0; i<KEY_BUFFER_SIZE; i++ )      {
 472                 key_data.keybuffer[i] = 0;
 473                 key_data.time_pressed[i] = 0;
 474         }
 475
 476 //use gettimeofday here:
 477         curtime = timer_get_fixed_seconds();
 478
 479         for (i=0; i<256; i++ )  {
 480                 keyd_pressed[i] = 0;
 481                 key_data.keys[i].state = 1;
 482                 key_data.keys[i].last_state = 0;
 483                 key_data.keys[i].timewentdown = curtime;
 484                 key_data.keys[i].downcount=0;
 485                 key_data.keys[i].upcount=0;
 486                 key_data.keys[i].timehelddown = 0;
 487                 key_data.keys[i].counter = 0;
 488         }
 489 }
 490
 491 int add_one(int n)
 492 {
 493  n++;
 494  if ( n >= KEY_BUFFER_SIZE ) n=0;
 495  return n;
 496 }
 497
 498 int key_checkch()
 499 {
 500         int is_one_waiting = 0;
 501         event_poll();
 502         if (key_data.keytail!=key_data.keyhead)
 503                 is_one_waiting = 1;
 504         return is_one_waiting;
 505 }
 506
 507 int key_inkey()
 508 {
 509         int key = 0;
 510         if (!Installed)
 511                 key_init();
 512         event_poll();
 513         if (key_data.keytail!=key_data.keyhead) {
 514                 key = key_data.keybuffer[key_data.keyhead];
 515                 key_data.keyhead = add_one(key_data.keyhead);
 516         }
 517 //added 9/3/98 by Matt Mueller to free cpu time instead of hogging during menus and such
 518         else d_delay(1);
 519 //end addition - Matt Mueller
 520
 521         return key;
 522 }
 523
 524 int key_inkey_time(fix * time)
 525 {
 526         int key = 0;
 527
 528         if (!Installed)
 529                 key_init();
 530         event_poll();
 531         if (key_data.keytail!=key_data.keyhead) {
 532                 key = key_data.keybuffer[key_data.keyhead];
 533                 *time = key_data.time_pressed[key_data.keyhead];
 534                 key_data.keyhead = add_one(key_data.keyhead);
 535         }
 536         return key;
 537 }
 538
 539 int key_peekkey()
 540 {
 541         int key = 0;
 542         event_poll();
 543         if (key_data.keytail!=key_data.keyhead)
 544                 key = key_data.keybuffer[key_data.keyhead];
 545
 546         return key;
 547 }
 548
 549 int key_getch()
 550 {
 551         int dummy=0;
 552
 553         if (!Installed)
 554                 return 0;
 555 //              return getch();
 556
 557         while (!key_checkch())
 558                 dummy++;
 559         return key_inkey();
 560 }
 561
 562 unsigned int key_get_shift_status()
 563 {
 564         unsigned int shift_status = 0;
 565
 566         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
 567                 shift_status |= KEY_SHIFTED;
 568
 569         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
 570                 shift_status |= KEY_ALTED;
 571
 572         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
 573                 shift_status |= KEY_CTRLED;
 574
 575 #ifndef NDEBUG
 576         if (keyd_pressed[KEY_DELETE])
 577                 shift_status |=KEY_DEBUGGED;
 578 #endif
 579
 580         return shift_status;
 581 }
 582
 583 // Returns the number of seconds this key has been down since last call.
 584 fix key_down_time(int scancode)
 585 {
 586         fix time_down, time;
 587
 588         event_poll();
 589         if ((scancode<0)|| (scancode>255)) return 0;
 590
 591         if (!keyd_pressed[scancode]) {
 592                 time_down = key_data.keys[scancode].timehelddown;
 593                 key_data.keys[scancode].timehelddown = 0;
 594         } else {
 595                 time = timer_get_fixed_seconds();
 596                 time_down = time - key_data.keys[scancode].timewentdown;
 597                 key_data.keys[scancode].timewentdown = time;
 598         }
 599
 600         return time_down;
 601 }
 602
 603 unsigned int key_down_count(int scancode)
 604 {
 605         int n;
 606         event_poll();
 607         if ((scancode<0)|| (scancode>255)) return 0;
 608
 609         n = key_data.keys[scancode].downcount;
 610         key_data.keys[scancode].downcount = 0;
 611
 612         return n;
 613 }
 614
 615 unsigned int key_up_count(int scancode)
 616 {
 617         int n;
 618         event_poll();
 619         if ((scancode<0)|| (scancode>255)) return 0;
 620
 621         n = key_data.keys[scancode].upcount;
 622         key_data.keys[scancode].upcount = 0;
 623
 624         return n;
 625 }