arch/sdl/key.c

   1 /* $Id: key.c,v 1.3 2003-02-27 22:07:21 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
  24 #define KEY_BUFFER_SIZE 16
  25
  26 static unsigned char Installed = 0;
  27
  28 //-------- Variable accessed by outside functions ---------
  29 unsigned char           keyd_buffer_type;               // 0=No buffer, 1=buffer ASCII, 2=buffer scans
  30 unsigned char           keyd_repeat;
  31 unsigned char           keyd_editor_mode;
  32 volatile unsigned char  keyd_last_pressed;
  33 volatile unsigned char  keyd_last_released;
  34 volatile unsigned char  keyd_pressed[256];
  35 volatile int            keyd_time_when_last_pressed;
  36
  37 typedef struct Key_info {
  38         ubyte           state;                  // state of key 1 == down, 0 == up
  39         ubyte           last_state;             // previous state of key
  40         int             counter;                // incremented each time key is down in handler
  41         fix             timewentdown;   // simple counter incremented each time in interrupt and key is down
  42         fix             timehelddown;   // counter to tell how long key is down -- gets reset to 0 by key routines
  43         ubyte           downcount;              // number of key counts key was down
  44         ubyte           upcount;                // number of times key was released
  45 } Key_info;
  46
  47 typedef struct keyboard {
  48         unsigned short          keybuffer[KEY_BUFFER_SIZE];
  49         Key_info                keys[256];
  50         fix                     time_pressed[KEY_BUFFER_SIZE];
  51         unsigned int            keyhead, keytail;
  52 } keyboard;
  53
  54 static keyboard key_data;
  55
  56 typedef struct key_props {
  57         char *key_text;
  58         unsigned char ascii_value;
  59         unsigned char shifted_ascii_value;
  60         SDLKey sym;
  61 } key_props;
  62
  63 key_props key_properties[256] = {
  64 { "",       255,    255,    -1                 },
  65 { "ESC",    255,    255,    SDLK_ESCAPE        },
  66 { "1",      '1',    '!',    SDLK_1             },
  67 { "2",      '2',    '@',    SDLK_2             },
  68 { "3",      '3',    '#',    SDLK_3             },
  69 { "4",      '4',    '$',    SDLK_4             },
  70 { "5",      '5',    '%',    SDLK_5             },
  71 { "6",      '6',    '^',    SDLK_6             },
  72 { "7",      '7',    '&',    SDLK_7             },
  73 { "8",      '8',    '*',    SDLK_8             },
  74 { "9",      '9',    '(',    SDLK_9             },
  75 { "0",      '0',    ')',    SDLK_0             },
  76 { "-",      '-',    '_',    SDLK_MINUS         },
  77 { "=",      '=',    '+',    SDLK_EQUALS        },
  78 { "BSPC",   255,    255,    SDLK_BACKSPACE     },
  79 { "TAB",    255,    255,    SDLK_TAB           },
  80 { "Q",      'q',    'Q',    SDLK_q             },
  81 { "W",      'w',    'W',    SDLK_w             },
  82 { "E",      'e',    'E',    SDLK_e             },
  83 { "R",      'r',    'R',    SDLK_r             },
  84 { "T",      't',    'T',    SDLK_t             },
  85 { "Y",      'y',    'Y',    SDLK_y             },
  86 { "U",      'u',    'U',    SDLK_u             },
  87 { "I",      'i',    'I',    SDLK_i             },
  88 { "O",      'o',    'O',    SDLK_o             },
  89 { "P",      'p',    'P',    SDLK_p             },
  90 { "[",      '[',    '{',    SDLK_LEFTBRACKET   },
  91 { "]",      ']',    '}',    SDLK_RIGHTBRACKET  },
  92 //edited 06/08/99 Matt Mueller - set to correct key_text
  93 { "\83",      255,    255,    SDLK_RETURN        },
  94 //end edit -MM
  95 { "LCTRL",  255,    255,    SDLK_LCTRL         },
  96 { "A",      'a',    'A',    SDLK_a             },
  97 { "S",      's',    'S',    SDLK_s             },
  98 { "D",      'd',    'D',    SDLK_d             },
  99 { "F",      'f',    'F',    SDLK_f             },
 100 { "G",      'g',    'G',    SDLK_g             },
 101 { "H",      'h',    'H',    SDLK_h             },
 102 { "J",      'j',    'J',    SDLK_j             },
 103 { "K",      'k',    'K',    SDLK_k             },
 104 { "L",      'l',    'L',    SDLK_l             },
 105 //edited 06/08/99 Matt Mueller - set to correct sym
 106 { ";",      ';',    ':',    SDLK_SEMICOLON         },
 107 //end edit -MM
 108 { "'",      '\'',   '"',    SDLK_QUOTE         },
 109 //edited 06/08/99 Matt Mueller - set to correct sym
 110 { "`",      '`',    '~',    SDLK_BACKQUOTE     },
 111 //end edit -MM
 112 { "LSHFT",  255,    255,    SDLK_LSHIFT        },
 113 { "\\",     '\\',   '|',    SDLK_BACKSLASH     },
 114 { "Z",      'z',    'Z',    SDLK_z             },
 115 { "X",      'x',    'X',    SDLK_x             },
 116 { "C",      'c',    'C',    SDLK_c             },
 117 { "V",      'v',    'V',    SDLK_v             },
 118 { "B",      'b',    'B',    SDLK_b             },
 119 { "N",      'n',    'N',    SDLK_n             },
 120 { "M",      'm',    'M',    SDLK_m             },
 121 //edited 06/08/99 Matt Mueller - set to correct syms
 122 { ",",      ',',    '<',    SDLK_COMMA  },
 123 { ".",      '.',    '>',    SDLK_PERIOD },
 124 { "/",      '/',    '?',    SDLK_SLASH  },
 125 //end edit -MM
 126 { "RSHFT",  255,    255,    SDLK_RSHIFT },
 127 { "PAD*",   '*',    255,    SDLK_KP_MULTIPLY   },
 128 { "LALT",   255,    255,    SDLK_LALT          },
 129 { "SPC",    ' ',    ' ',    SDLK_SPACE         },
 130 { "CPSLK",  255,    255,    SDLK_CAPSLOCK      },
 131 { "F1",     255,    255,    SDLK_F1            },
 132 { "F2",     255,    255,    SDLK_F2            },
 133 { "F3",     255,    255,    SDLK_F3            },
 134 { "F4",     255,    255,    SDLK_F4            },
 135 { "F5",     255,    255,    SDLK_F5            },
 136 { "F6",     255,    255,    SDLK_F6            },
 137 { "F7",     255,    255,    SDLK_F7            },
 138 { "F8",     255,    255,    SDLK_F8            },
 139 { "F9",     255,    255,    SDLK_F9            },
 140 { "F10",    255,    255,    SDLK_F10           },
 141 { "NMLCK",  255,    255,    SDLK_NUMLOCK       },
 142 { "SCLK",   255,    255,    SDLK_SCROLLOCK     },
 143 { "PAD7",   255,    255,    SDLK_KP7           },
 144 { "PAD8",   255,    255,    SDLK_KP8           },
 145 { "PAD9",   255,    255,    SDLK_KP9           },
 146 { "PAD-",   255,    255,    SDLK_KP_MINUS      },
 147 { "PAD4",   255,    255,    SDLK_KP4           },
 148 { "PAD5",   255,    255,    SDLK_KP5           },
 149 { "PAD6",   255,    255,    SDLK_KP6           },
 150 { "PAD+",   255,    255,    SDLK_KP_PLUS       },
 151 { "PAD1",   255,    255,    SDLK_KP1           },
 152 { "PAD2",   255,    255,    SDLK_KP2           },
 153 { "PAD3",   255,    255,    SDLK_KP3           },
 154 { "PAD0",   255,    255,    SDLK_KP0           },
 155 { "PAD.",   255,    255,    SDLK_KP_PERIOD     },
 156 { "",       255,    255,    -1                 },
 157 { "",       255,    255,    -1                 },
 158 { "",       255,    255,    -1                 },
 159 { "F11",    255,    255,    SDLK_F11           },
 160 { "F12",    255,    255,    SDLK_F12           },
 161 { "",       255,    255,    -1                 },
 162 { "",       255,    255,    -1                 },
 163 { "",       255,    255,    -1                 },
 164 { "",       255,    255,    -1                 },
 165 { "",       255,    255,    -1                 },
 166 { "",       255,    255,    -1                 },
 167 { "",       255,    255,    -1                 },
 168 { "",       255,    255,    -1                 },
 169 //edited 06/08/99 Matt Mueller - add pause ability
 170 { "PAUSE",       255,    255,    SDLK_PAUSE                 },
 171 //end edit -MM
 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 { "",       255,    255,    -1                 },
 225 { "",       255,    255,    -1                 },
 226 { "",       255,    255,    -1                 },
 227 { "",       255,    255,    -1                 },
 228 { "",       255,    255,    -1                 },
 229 { "",       255,    255,    -1                 },
 230 //edited 06/08/99 Matt Mueller - set to correct key_text
 231 { "PAD\83",   255,    255,    SDLK_KP_ENTER      },
 232 //end edit -MM
 233 //edited 06/08/99 Matt Mueller - set to correct sym
 234 { "RCTRL",  255,    255,    SDLK_RCTRL            },
 235 //end edit -MM
 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 { "",       255,    255,    -1                 },
 254 { "",       255,    255,    -1                 },
 255 { "",       255,    255,    -1                 },
 256 { "",       255,    255,    -1                 },
 257 { "",       255,    255,    -1                 },
 258 { "",       255,    255,    -1                 },
 259 { "PAD/",   255,    255,    SDLK_KP_DIVIDE     },
 260 { "",       255,    255,    -1                 },
 261 //edited 06/08/99 Matt Mueller - add printscreen ability
 262 { "PRSCR",       255,    255,    SDLK_PRINT                 },
 263 //end edit -MM
 264 { "RALT",   255,    255,    SDLK_RALT          },
 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 { "",       255,    255,    -1                 },
 274 { "",       255,    255,    -1                 },
 275 { "",       255,    255,    -1                 },
 276 { "",       255,    255,    -1                 },
 277 { "",       255,    255,    -1                 },
 278 { "",       255,    255,    -1                 },
 279 { "HOME",   255,    255,    SDLK_HOME          },
 280 //edited 06/08/99 Matt Mueller - set to correct key_text
 281 { "UP",         255,    255,    SDLK_UP            },
 282 //end edit -MM
 283 { "PGUP",   255,    255,    SDLK_PAGEUP        },
 284 { "",       255,    255,    -1                 },
 285 //edited 06/08/99 Matt Mueller - set to correct key_text
 286 { "LEFT",       255,    255,    SDLK_LEFT          },
 287 //end edit -MM
 288 { "",       255,    255,    -1                 },
 289 //edited 06/08/99 Matt Mueller - set to correct key_text
 290 { "RIGHT",      255,    255,    SDLK_RIGHT         },
 291 //end edit -MM
 292 { "",       255,    255,    -1                 },
 293 //edited 06/08/99 Matt Mueller - set to correct key_text
 294 { "END",    255,    255,    SDLK_END           },
 295 //end edit -MM
 296 { "DOWN",       255,    255,    SDLK_DOWN          },
 297 { "PGDN",       255,    255,    SDLK_PAGEDOWN      },
 298 { "INS",        255,    255,    SDLK_INSERT        },
 299 { "DEL",        255,    255,    SDLK_DELETE        },
 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 { "",       255,    255,    -1                 },
 339 { "",       255,    255,    -1                 },
 340 { "",       255,    255,    -1                 },
 341 { "",       255,    255,    -1                 },
 342 { "",       255,    255,    -1                 },
 343 { "",       255,    255,    -1                 },
 344 };
 345
 346 char *key_text[256];
 347
 348 void key_buid_key_text(void)
 349 {
 350 }
 351
 352 unsigned char key_to_ascii(int keycode )
 353 {
 354         int shifted;
 355
 356         shifted = keycode & KEY_SHIFTED;
 357         keycode &= 0xFF;
 358
 359         if (shifted)
 360                 return key_properties[keycode].shifted_ascii_value;
 361         else
 362                 return key_properties[keycode].ascii_value;
 363 }
 364
 365 void key_handler(SDL_KeyboardEvent *event)
 366 {
 367         ubyte state;
 368         int i, keycode, event_key, key_state;
 369         Key_info *key;
 370         unsigned char temp;
 371
 372         event_key = event->keysym.sym;
 373
 374         key_state = (event->state == SDL_PRESSED); //  !(wInfo & KF_UP);
 375         //=====================================================
 376         //Here a translation from win keycodes to mac keycodes!
 377         //=====================================================
 378
 379         for (i = 255; i >= 0; i--) {
 380
 381                 keycode = i;
 382                 key = &(key_data.keys[keycode]);
 383                 if (key_properties[i].sym == event_key)
 384                         state = key_state;
 385                 else
 386                         state = key->last_state;
 387
 388                 if ( key->last_state == state ) {
 389                         if (state) {
 390                                 key->counter++;
 391                                 keyd_last_pressed = keycode;
 392                                 keyd_time_when_last_pressed = timer_get_fixed_seconds();
 393                         }
 394                 } else {
 395                         if (state)      {
 396                                 keyd_last_pressed = keycode;
 397                                 keyd_pressed[keycode] = 1;
 398                                 key->downcount += state;
 399                                 key->state = 1;
 400                                 key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
 401                                 key->counter++;
 402                         } else {
 403                                 keyd_pressed[keycode] = 0;
 404                                 keyd_last_released = keycode;
 405                                 key->upcount += key->state;
 406                                 key->state = 0;
 407                                 key->counter = 0;
 408                                 key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
 409                         }
 410                 }
 411                 if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
 412                         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
 413                                 keycode |= KEY_SHIFTED;
 414                         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
 415                                 keycode |= KEY_ALTED;
 416                         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
 417                                 keycode |= KEY_CTRLED;
 418                         if ( keyd_pressed[KEY_DELETE] )
 419                                 keycode |= KEY_DEBUGGED;
 420                         temp = key_data.keytail+1;
 421                         if ( temp >= KEY_BUFFER_SIZE ) temp=0;
 422                         if (temp!=key_data.keyhead)     {
 423                                 key_data.keybuffer[key_data.keytail] = keycode;
 424                                 key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
 425                                 key_data.keytail = temp;
 426                         }
 427                 }
 428                 key->last_state = state;
 429         }
 430 }
 431
 432 void key_close()
 433 {
 434  Installed = 0;
 435 }
 436
 437 void key_init()
 438 {
 439   int i;
 440
 441   if (Installed) return;
 442
 443   Installed=1;
 444
 445   keyd_time_when_last_pressed = timer_get_fixed_seconds();
 446   keyd_buffer_type = 1;
 447   keyd_repeat = 1;
 448
 449   for(i=0; i<256; i++)
 450      key_text[i] = key_properties[i].key_text;
 451
 452   // Clear the keyboard array
 453   key_flush();
 454   atexit(key_close);
 455 }
 456
 457 void key_flush()
 458 {
 459         int i;
 460         fix curtime;
 461
 462         if (!Installed)
 463                 key_init();
 464
 465         key_data.keyhead = key_data.keytail = 0;
 466
 467         //Clear the keyboard buffer
 468         for (i=0; i<KEY_BUFFER_SIZE; i++ )      {
 469                 key_data.keybuffer[i] = 0;
 470                 key_data.time_pressed[i] = 0;
 471         }
 472
 473 //use gettimeofday here:
 474         curtime = timer_get_fixed_seconds();
 475
 476         for (i=0; i<256; i++ )  {
 477                 keyd_pressed[i] = 0;
 478                 key_data.keys[i].state = 1;
 479                 key_data.keys[i].last_state = 0;
 480                 key_data.keys[i].timewentdown = curtime;
 481                 key_data.keys[i].downcount=0;
 482                 key_data.keys[i].upcount=0;
 483                 key_data.keys[i].timehelddown = 0;
 484                 key_data.keys[i].counter = 0;
 485         }
 486 }
 487
 488 int add_one(int n)
 489 {
 490  n++;
 491  if ( n >= KEY_BUFFER_SIZE ) n=0;
 492  return n;
 493 }
 494
 495 int key_checkch()
 496 {
 497         int is_one_waiting = 0;
 498         event_poll();
 499         if (key_data.keytail!=key_data.keyhead)
 500                 is_one_waiting = 1;
 501         return is_one_waiting;
 502 }
 503
 504 int key_inkey()
 505 {
 506         int key = 0;
 507         if (!Installed)
 508                 key_init();
 509         event_poll();
 510         if (key_data.keytail!=key_data.keyhead) {
 511                 key = key_data.keybuffer[key_data.keyhead];
 512                 key_data.keyhead = add_one(key_data.keyhead);
 513         }
 514 //added 9/3/98 by Matt Mueller to free cpu time instead of hogging during menus and such
 515         else timer_delay(1);
 516 //end addition - Matt Mueller
 517
 518         return key;
 519 }
 520
 521 int key_inkey_time(fix * time)
 522 {
 523         int key = 0;
 524
 525         if (!Installed)
 526                 key_init();
 527         event_poll();
 528         if (key_data.keytail!=key_data.keyhead) {
 529                 key = key_data.keybuffer[key_data.keyhead];
 530                 *time = key_data.time_pressed[key_data.keyhead];
 531                 key_data.keyhead = add_one(key_data.keyhead);
 532         }
 533         return key;
 534 }
 535
 536 int key_peekkey()
 537 {
 538         int key = 0;
 539         event_poll();
 540         if (key_data.keytail!=key_data.keyhead)
 541                 key = key_data.keybuffer[key_data.keyhead];
 542
 543         return key;
 544 }
 545
 546 int key_getch()
 547 {
 548         int dummy=0;
 549
 550         if (!Installed)
 551                 return 0;
 552 //              return getch();
 553
 554         while (!key_checkch())
 555                 dummy++;
 556         return key_inkey();
 557 }
 558
 559 unsigned int key_get_shift_status()
 560 {
 561         unsigned int shift_status = 0;
 562
 563         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
 564                 shift_status |= KEY_SHIFTED;
 565
 566         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
 567                 shift_status |= KEY_ALTED;
 568
 569         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
 570                 shift_status |= KEY_CTRLED;
 571
 572 #ifndef NDEBUG
 573         if (keyd_pressed[KEY_DELETE])
 574                 shift_status |=KEY_DEBUGGED;
 575 #endif
 576
 577         return shift_status;
 578 }
 579
 580 // Returns the number of seconds this key has been down since last call.
 581 fix key_down_time(int scancode)
 582 {
 583         fix time_down, time;
 584
 585         event_poll();
 586         if ((scancode<0)|| (scancode>255)) return 0;
 587
 588         if (!keyd_pressed[scancode]) {
 589                 time_down = key_data.keys[scancode].timehelddown;
 590                 key_data.keys[scancode].timehelddown = 0;
 591         } else {
 592                 time = timer_get_fixed_seconds();
 593                 time_down = time - key_data.keys[scancode].timewentdown;
 594                 key_data.keys[scancode].timewentdown = time;
 595         }
 596
 597         return time_down;
 598 }
 599
 600 unsigned int key_down_count(int scancode)
 601 {
 602         int n;
 603         event_poll();
 604         if ((scancode<0)|| (scancode>255)) return 0;
 605
 606         n = key_data.keys[scancode].downcount;
 607         key_data.keys[scancode].downcount = 0;
 608
 609         return n;
 610 }
 611
 612 unsigned int key_up_count(int scancode)
 613 {
 614         int n;
 615         event_poll();
 616         if ((scancode<0)|| (scancode>255)) return 0;
 617
 618         n = key_data.keys[scancode].upcount;
 619         key_data.keys[scancode].upcount = 0;
 620
 621         return n;
 622 }