input/sdl_key.c

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