arch/sdl/key.c

   1 /*
   2  *
   3  * SDL keyboard input support
   4  *
   5  *
   6  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <conf.h>
  10 #endif
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14
  15 #include <SDL.h>
  16
  17 #include "inferno.h"
  18 #include "game.h"
  19 #include "event.h"
  20 #include "error.h"
  21 #include "key.h"
  22 #include "timer.h"
  23 #include "console.h"
  24 #include "u_mem.h"
  25
  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 { "\x83",   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\x83",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 { "LCMD",   255,    255,    SDLK_LMETA         },
 240 { "RCMD",   255,    255,    SDLK_RMETA         },
 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
 369 /* The list of keybindings */
 370 static char *key_binding_list[256];
 371
 372
 373 /* get the action bound to a key, if any */
 374 char *key_binding(ubyte keycode)
 375 {
 376         return key_binding_list[keycode];
 377 }
 378
 379
 380 /* Write key bindings to file */
 381 void key_write_bindings(CFILE *file)
 382 {
 383         int i;
 384
 385         for (i = 0; i < 256; i++)
 386                 if (key_binding_list[i])
 387                         PHYSFSX_printf(file, "bind %s \"%s\"\n", key_text[i], key_binding_list[i]);
 388 }
 389
 390
 391 /* bind */
 392 /* FIXME: key_text is not really adequate for this */
 393 void key_cmd_bind(int argc, char **argv)
 394 {
 395         char buf[CMD_MAX_LENGTH] = "";
 396         unsigned char key = 0;
 397         int i;
 398
 399         if (argc < 2)
 400         {
 401                 con_printf(CON_NORMAL, "key bindings:\n");
 402                 for (i = 0; i < 256; i++) {
 403                         if (!key_binding_list[i])
 404                                 continue;
 405                         con_printf(CON_NORMAL, "%s: %s\n", key_text[i], key_binding_list[i]);
 406                 }
 407                 return;
 408         }
 409
 410         for (i = 2; i < argc; i++) {
 411                 if (i > 2)
 412                         strncat(buf, " ", CMD_MAX_LENGTH);
 413                 strncat(buf, argv[i], CMD_MAX_LENGTH);
 414         }
 415
 416         for (i = 0; i < 256; i++) {
 417                 if (!stricmp(argv[1], key_text[i])) {
 418                         key = i;
 419                         break;
 420                 }
 421         }
 422
 423         if (!key) {
 424                 con_printf(CON_CRITICAL, "bind: key %s not found\n", argv[1]);
 425                 return;
 426         }
 427
 428         if (key_binding_list[key])
 429                 d_free(key_binding_list[key]);
 430         key_binding_list[key] = d_strdup(buf);
 431 }
 432
 433
 434 /* unbind */
 435 void key_cmd_unbind(int argc, char **argv)
 436 {
 437         unsigned int key;
 438
 439         if (argc < 2)
 440                 return;
 441
 442         for (key = 0; key < 256; key++) {
 443                 if (!stricmp(argv[1], key_text[key])) {
 444                         break;
 445                 }
 446         }
 447
 448         if (key_binding_list[key])
 449                 d_free(key_binding_list[key]);
 450         key_binding_list[key] = NULL;
 451 }
 452
 453
 454 static void key_handle_binding(int keycode, int state)
 455 {
 456         if (!key_binding_list[keycode])
 457                 return;
 458
 459         if (Game_paused)
 460                 return;
 461
 462         if (Function_mode != FMODE_GAME)
 463                 return;
 464
 465         if (CON_isVisible())
 466                 return;
 467
 468         if (!state && key_binding_list[keycode][0] == '+')
 469                 cmd_appendf("-%s", &key_binding_list[keycode][1]);
 470         else if (state)
 471                 cmd_append(key_binding_list[keycode]);
 472 }
 473
 474
 475 void key_handler(SDL_KeyboardEvent *event)
 476 {
 477         ubyte state;
 478         int i, keycode, event_key, key_state;
 479         Key_info *key;
 480         unsigned char temp;
 481
 482         event_key = event->keysym.sym;
 483
 484         key_state = (event->state == SDL_PRESSED); //  !(wInfo & KF_UP);
 485         //=====================================================
 486         //Here a translation from win keycodes to mac keycodes!
 487         //=====================================================
 488
 489         for (i = 255; i >= 0; i--) {
 490
 491                 keycode = i;
 492                 key = &(key_data.keys[keycode]);
 493                 if (key_properties[i].sym == event_key) {
 494                         state = key_state;
 495                         key_handle_binding(keycode, state);
 496                 } else
 497                         state = key->last_state;
 498
 499                 if ( key->last_state == state ) {
 500                         if (state) {
 501                                 key->counter++;
 502                                 keyd_last_pressed = keycode;
 503                                 keyd_time_when_last_pressed = timer_get_fixed_seconds();
 504                         }
 505                 } else {
 506                         if (state)      {
 507                                 keyd_last_pressed = keycode;
 508                                 keyd_pressed[keycode] = 1;
 509                                 key->downcount += state;
 510                                 key->state = 1;
 511                                 key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
 512                                 key->counter++;
 513                         } else {
 514                                 keyd_pressed[keycode] = 0;
 515                                 keyd_last_released = keycode;
 516                                 key->upcount += key->state;
 517                                 key->state = 0;
 518                                 key->counter = 0;
 519                                 key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
 520                         }
 521                 }
 522                 if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
 523                         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
 524                                 keycode |= KEY_SHIFTED;
 525                         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
 526                                 keycode |= KEY_ALTED;
 527                         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
 528                                 keycode |= KEY_CTRLED;
 529                         if ( keyd_pressed[KEY_DELETE] )
 530                                 keycode |= KEY_DEBUGGED;
 531                         if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA])
 532                                 keycode |= KEY_METAED;
 533
 534                         temp = key_data.keytail+1;
 535                         if ( temp >= KEY_BUFFER_SIZE ) temp=0;
 536                         if (temp!=key_data.keyhead)     {
 537                                 key_data.keybuffer[key_data.keytail] = keycode;
 538                                 key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
 539                                 key_data.keytail = temp;
 540                         }
 541                 }
 542                 key->last_state = state;
 543         }
 544 }
 545
 546 void key_close()
 547 {
 548         int i;
 549
 550         for (i = 0; i < 256; i++)
 551                 if (key_binding_list[i])
 552                         d_free(key_binding_list[i]);
 553
 554  Installed = 0;
 555 }
 556
 557 void key_init()
 558 {
 559   int i;
 560
 561   if (Installed) return;
 562
 563   Installed=1;
 564
 565   keyd_time_when_last_pressed = timer_get_fixed_seconds();
 566   keyd_buffer_type = 1;
 567   keyd_repeat = 1;
 568
 569   for(i=0; i<256; i++)
 570      key_text[i] = key_properties[i].key_text;
 571
 572         cmd_addcommand("bind", key_cmd_bind);
 573         cmd_addcommand("unbind", key_cmd_unbind);
 574
 575   // Clear the keyboard array
 576   key_flush();
 577   atexit(key_close);
 578 }
 579
 580 void key_flush()
 581 {
 582         int i;
 583         fix curtime;
 584
 585         if (!Installed)
 586                 key_init();
 587
 588         key_data.keyhead = key_data.keytail = 0;
 589
 590         //Clear the keyboard buffer
 591         for (i=0; i<KEY_BUFFER_SIZE; i++ )      {
 592                 key_data.keybuffer[i] = 0;
 593                 key_data.time_pressed[i] = 0;
 594         }
 595
 596 //use gettimeofday here:
 597         curtime = timer_get_fixed_seconds();
 598
 599         for (i=0; i<256; i++ )  {
 600                 keyd_pressed[i] = 0;
 601                 key_data.keys[i].state = 1;
 602                 key_data.keys[i].last_state = 0;
 603                 key_data.keys[i].timewentdown = curtime;
 604                 key_data.keys[i].downcount=0;
 605                 key_data.keys[i].upcount=0;
 606                 key_data.keys[i].timehelddown = 0;
 607                 key_data.keys[i].counter = 0;
 608         }
 609 }
 610
 611 int add_one(int n)
 612 {
 613  n++;
 614  if ( n >= KEY_BUFFER_SIZE ) n=0;
 615  return n;
 616 }
 617
 618 int key_checkch()
 619 {
 620         int is_one_waiting = 0;
 621         event_poll();
 622         if (key_data.keytail!=key_data.keyhead)
 623                 is_one_waiting = 1;
 624         return is_one_waiting;
 625 }
 626
 627 int key_inkey()
 628 {
 629         int key = 0;
 630         if (!Installed)
 631                 key_init();
 632         event_poll();
 633         if (key_data.keytail!=key_data.keyhead) {
 634                 key = key_data.keybuffer[key_data.keyhead];
 635                 key_data.keyhead = add_one(key_data.keyhead);
 636         }
 637 //added 9/3/98 by Matt Mueller to free cpu time instead of hogging during menus and such
 638         else timer_delay(1);
 639 //end addition - Matt Mueller
 640
 641         return key;
 642 }
 643
 644 int key_inkey_time(fix * time)
 645 {
 646         int key = 0;
 647
 648         if (!Installed)
 649                 key_init();
 650         event_poll();
 651         if (key_data.keytail!=key_data.keyhead) {
 652                 key = key_data.keybuffer[key_data.keyhead];
 653                 *time = key_data.time_pressed[key_data.keyhead];
 654                 key_data.keyhead = add_one(key_data.keyhead);
 655         }
 656         return key;
 657 }
 658
 659 int key_peekkey()
 660 {
 661         int key = 0;
 662         event_poll();
 663         if (key_data.keytail!=key_data.keyhead)
 664                 key = key_data.keybuffer[key_data.keyhead];
 665
 666         return key;
 667 }
 668
 669 int key_getch()
 670 {
 671         int dummy=0;
 672
 673         if (!Installed)
 674                 return 0;
 675 //              return getch();
 676
 677         while (!key_checkch())
 678                 dummy++;
 679         return key_inkey();
 680 }
 681
 682 unsigned int key_get_shift_status()
 683 {
 684         unsigned int shift_status = 0;
 685
 686         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
 687                 shift_status |= KEY_SHIFTED;
 688
 689         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
 690                 shift_status |= KEY_ALTED;
 691
 692         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
 693                 shift_status |= KEY_CTRLED;
 694
 695         if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA] )
 696                 shift_status |= KEY_METAED;
 697
 698 #ifndef NDEBUG
 699         if (keyd_pressed[KEY_DELETE])
 700                 shift_status |=KEY_DEBUGGED;
 701 #endif
 702
 703         return shift_status;
 704 }
 705
 706 // Returns the number of seconds this key has been down since last call.
 707 fix key_down_time(int scancode)
 708 {
 709         fix time_down, time;
 710
 711         event_poll();
 712         if ((scancode<0)|| (scancode>255)) return 0;
 713
 714         if (!keyd_pressed[scancode]) {
 715                 time_down = key_data.keys[scancode].timehelddown;
 716                 key_data.keys[scancode].timehelddown = 0;
 717         } else {
 718                 time = timer_get_fixed_seconds();
 719                 time_down = time - key_data.keys[scancode].timewentdown;
 720                 key_data.keys[scancode].timewentdown = time;
 721         }
 722
 723         return time_down;
 724 }
 725
 726 unsigned int key_down_count(int scancode)
 727 {
 728         int n;
 729         event_poll();
 730         if ((scancode<0)|| (scancode>255)) return 0;
 731
 732         n = key_data.keys[scancode].downcount;
 733         key_data.keys[scancode].downcount = 0;
 734
 735         return n;
 736 }
 737
 738 unsigned int key_up_count(int scancode)
 739 {
 740         int n;
 741         event_poll();
 742         if ((scancode<0)|| (scancode>255)) return 0;
 743
 744         n = key_data.keys[scancode].upcount;
 745         key_data.keys[scancode].upcount = 0;
 746
 747         return n;
 748 }