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 #include "mouse.h"
  26
  27
  28 #define KEY_BUFFER_SIZE 16
  29
  30 static unsigned char Installed = 0;
  31
  32 //-------- Variable accessed by outside functions ---------
  33 unsigned char           keyd_buffer_type; // 0=No buffer, 1=buffer ASCII, 2=buffer scans
  34 unsigned char           keyd_repeat;
  35 unsigned char           keyd_editor_mode;
  36 volatile unsigned char  keyd_last_pressed;
  37 volatile unsigned char  keyd_last_released;
  38 volatile unsigned char  keyd_pressed[256];
  39 volatile int            keyd_time_when_last_pressed;
  40
  41 typedef struct Key_info {
  42         ubyte   state;          // state of key 1 == down, 0 == up
  43         ubyte   last_state;     // previous state of key
  44         int     counter;        // incremented each time key is down in handler
  45         fix     timewentdown;   // simple counter incremented each time in interrupt and key is down
  46         fix     timehelddown;   // counter to tell how long key is down -- gets reset to 0 by key routines
  47         ubyte   downcount;      // number of key counts key was down
  48         ubyte   upcount;        // number of times key was released
  49 } Key_info;
  50
  51 typedef struct keyboard {
  52         unsigned short  keybuffer[KEY_BUFFER_SIZE];
  53         Key_info        keys[256];
  54         fix             time_pressed[KEY_BUFFER_SIZE];
  55         unsigned int    keyhead, keytail;
  56 } keyboard;
  57
  58 static keyboard key_data;
  59
  60 typedef struct key_props {
  61         char *key_text;
  62         unsigned char ascii_value;
  63         unsigned char shifted_ascii_value;
  64         SDLKey sym;
  65 } key_props;
  66
  67 key_props key_properties[256] = {
  68 { "",       255,    255,    -1                 },
  69 { "ESC",    255,    255,    SDLK_ESCAPE        },
  70 { "1",      '1',    '!',    SDLK_1             },
  71 { "2",      '2',    '@',    SDLK_2             },
  72 { "3",      '3',    '#',    SDLK_3             },
  73 { "4",      '4',    '$',    SDLK_4             },
  74 { "5",      '5',    '%',    SDLK_5             },
  75 { "6",      '6',    '^',    SDLK_6             },
  76 { "7",      '7',    '&',    SDLK_7             },
  77 { "8",      '8',    '*',    SDLK_8             },
  78 { "9",      '9',    '(',    SDLK_9             },
  79 { "0",      '0',    ')',    SDLK_0             },
  80 { "-",      '-',    '_',    SDLK_MINUS         },
  81 { "=",      '=',    '+',    SDLK_EQUALS        },
  82 { "BSPC",   255,    255,    SDLK_BACKSPACE     },
  83 { "TAB",    255,    255,    SDLK_TAB           },
  84 { "Q",      'q',    'Q',    SDLK_q             },
  85 { "W",      'w',    'W',    SDLK_w             },
  86 { "E",      'e',    'E',    SDLK_e             },
  87 { "R",      'r',    'R',    SDLK_r             },
  88 { "T",      't',    'T',    SDLK_t             },
  89 { "Y",      'y',    'Y',    SDLK_y             },
  90 { "U",      'u',    'U',    SDLK_u             },
  91 { "I",      'i',    'I',    SDLK_i             },
  92 { "O",      'o',    'O',    SDLK_o             },
  93 { "P",      'p',    'P',    SDLK_p             },
  94 { "[",      '[',    '{',    SDLK_LEFTBRACKET   },
  95 { "]",      ']',    '}',    SDLK_RIGHTBRACKET  },
  96 { "RETURN", 255,    255,    SDLK_RETURN        },
  97 { "LCTRL",  255,    255,    SDLK_LCTRL         },
  98 { "A",      'a',    'A',    SDLK_a             },
  99 { "S",      's',    'S',    SDLK_s             },
 100 { "D",      'd',    'D',    SDLK_d             },
 101 { "F",      'f',    'F',    SDLK_f             },
 102 { "G",      'g',    'G',    SDLK_g             },
 103 { "H",      'h',    'H',    SDLK_h             },
 104 { "J",      'j',    'J',    SDLK_j             },
 105 { "K",      'k',    'K',    SDLK_k             },
 106 { "L",      'l',    'L',    SDLK_l             },
 107 { ";",      ';',    ':',    SDLK_SEMICOLON     },
 108 { "'",     '\'',    '"',    SDLK_QUOTE         },
 109 { "`",      '`',    '~',    SDLK_BACKQUOTE     },
 110 { "LSHFT",  255,    255,    SDLK_LSHIFT        },
 111 { "\\",    '\\',    '|',    SDLK_BACKSLASH     },
 112 { "Z",      'z',    'Z',    SDLK_z             },
 113 { "X",      'x',    'X',    SDLK_x             },
 114 { "C",      'c',    'C',    SDLK_c             },
 115 { "V",      'v',    'V',    SDLK_v             },
 116 { "B",      'b',    'B',    SDLK_b             },
 117 { "N",      'n',    'N',    SDLK_n             },
 118 { "M",      'm',    'M',    SDLK_m             },
 119 { ",",      ',',    '<',    SDLK_COMMA         },
 120 { ".",      '.',    '>',    SDLK_PERIOD        },
 121 { "/",      '/',    '?',    SDLK_SLASH         },
 122 { "RSHFT",  255,    255,    SDLK_RSHIFT        },
 123 { "PAD*",   '*',    255,    SDLK_KP_MULTIPLY   },
 124 { "LALT",   255,    255,    SDLK_LALT          },
 125 { "SPC",    ' ',    ' ',    SDLK_SPACE         },
 126 { "CPSLK",  255,    255,    SDLK_CAPSLOCK      },
 127 { "F1",     255,    255,    SDLK_F1            },
 128 { "F2",     255,    255,    SDLK_F2            },
 129 { "F3",     255,    255,    SDLK_F3            },
 130 { "F4",     255,    255,    SDLK_F4            },
 131 { "F5",     255,    255,    SDLK_F5            },
 132 { "F6",     255,    255,    SDLK_F6            },
 133 { "F7",     255,    255,    SDLK_F7            },
 134 { "F8",     255,    255,    SDLK_F8            },
 135 { "F9",     255,    255,    SDLK_F9            },
 136 { "F10",    255,    255,    SDLK_F10           },
 137 { "NMLCK",  255,    255,    SDLK_NUMLOCK       },
 138 { "SCLK",   255,    255,    SDLK_SCROLLOCK     },
 139 { "PAD7",   255,    255,    SDLK_KP7           },
 140 { "PAD8",   255,    255,    SDLK_KP8           },
 141 { "PAD9",   255,    255,    SDLK_KP9           },
 142 { "PAD-",   255,    255,    SDLK_KP_MINUS      },
 143 { "PAD4",   255,    255,    SDLK_KP4           },
 144 { "PAD5",   255,    255,    SDLK_KP5           },
 145 { "PAD6",   255,    255,    SDLK_KP6           },
 146 { "PAD+",   255,    255,    SDLK_KP_PLUS       },
 147 { "PAD1",   255,    255,    SDLK_KP1           },
 148 { "PAD2",   255,    255,    SDLK_KP2           },
 149 { "PAD3",   255,    255,    SDLK_KP3           },
 150 { "PAD0",   255,    255,    SDLK_KP0           },
 151 { "PAD.",   255,    255,    SDLK_KP_PERIOD     },
 152 { "",       255,    255,    -1                 },
 153 { "",       255,    255,    -1                 },
 154 { "",       255,    255,    -1                 },
 155 { "F11",    255,    255,    SDLK_F11           },
 156 { "F12",    255,    255,    SDLK_F12           },
 157 { "F13",    255,    255,    SDLK_F13           },
 158 { "F14",    255,    255,    SDLK_F14           },
 159 { "F15",    255,    255,    SDLK_F15           },
 160 #ifdef __APPLE__
 161 { "F16",    255,    255,    0x106A             },
 162 { "F17",    255,    255,    0x1040             },
 163 { "F18",    255,    255,    0x104F             },
 164 { "F19",    255,    255,    0x1050             },
 165 #else
 166 { "",       255,    255,    -1                 },
 167 { "",       255,    255,    -1                 },
 168 { "",       255,    255,    -1                 },
 169 { "",       255,    255,    -1                 },
 170 #endif
 171 { "",       255,    255,    -1                 },
 172 { "PAUSE",  255,    255,    SDLK_PAUSE         },
 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 { "PAD=",   255,    255,    SDLK_KP_EQUALS     },
 231 { "ENTER",  255,    255,    SDLK_KP_ENTER      },
 232 { "RCTRL",  255,    255,    SDLK_RCTRL         },
 233 { "LCMD",   255,    255,    SDLK_LMETA         },
 234 { "RCMD",   255,    255,    SDLK_RMETA         },
 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 { "PRSCR",  255,    255,    SDLK_PRINT         },
 259 { "RALT",   255,    255,    SDLK_RALT          },
 260 { "",       255,    255,    -1                 },
 261 { "",       255,    255,    -1                 },
 262 { "",       255,    255,    -1                 },
 263 { "",       255,    255,    -1                 },
 264 { "",       255,    255,    -1                 },
 265 { "",       255,    255,    -1                 },
 266 { "",       255,    255,    -1                 },
 267 { "",       255,    255,    -1                 },
 268 { "",       255,    255,    -1                 },
 269 { "",       255,    255,    -1                 },
 270 { "",       255,    255,    -1                 },
 271 { "",       255,    255,    -1                 },
 272 { "",       255,    255,    -1                 },
 273 { "",       255,    255,    -1                 },
 274 { "HOME",   255,    255,    SDLK_HOME          },
 275 { "UP",     255,    255,    SDLK_UP            },
 276 { "PGUP",   255,    255,    SDLK_PAGEUP        },
 277 { "",       255,    255,    -1                 },
 278 { "LEFT",   255,    255,    SDLK_LEFT          },
 279 { "",       255,    255,    -1                 },
 280 { "RIGHT",  255,    255,    SDLK_RIGHT         },
 281 { "",       255,    255,    -1                 },
 282 { "END",    255,    255,    SDLK_END           },
 283 { "DOWN",   255,    255,    SDLK_DOWN          },
 284 { "PGDN",   255,    255,    SDLK_PAGEDOWN      },
 285 { "INS",    255,    255,    SDLK_INSERT        },
 286 { "DEL",    255,    255,    SDLK_DELETE        },
 287 { "",       255,    255,    -1                 },
 288 { "",       255,    255,    -1                 },
 289 { "",       255,    255,    -1                 },
 290 { "",       255,    255,    -1                 },
 291 { "",       255,    255,    -1                 },
 292 { "",       255,    255,    -1                 },
 293 { "",       255,    255,    -1                 },
 294 { "",       255,    255,    -1                 },
 295 { "",       255,    255,    -1                 },
 296 { "",       255,    255,    -1                 },
 297 { "",       255,    255,    -1                 },
 298 { "",       255,    255,    -1                 },
 299 { "",       255,    255,    -1                 },
 300 { "",       255,    255,    -1                 },
 301 { "",       255,    255,    -1                 },
 302 { "",       255,    255,    -1                 },
 303 { "",       255,    255,    -1                 },
 304 { "",       255,    255,    -1                 },
 305 { "",       255,    255,    -1                 },
 306 { "",       255,    255,    -1                 },
 307 { "",       255,    255,    -1                 },
 308 { "",       255,    255,    -1                 },
 309 { "",       255,    255,    -1                 },
 310 { "",       255,    255,    -1                 },
 311 { "",       255,    255,    -1                 },
 312 { "",       255,    255,    -1                 },
 313 { "",       255,    255,    -1                 },
 314 { "",       255,    255,    -1                 },
 315 { "",       255,    255,    -1                 },
 316 { "",       255,    255,    -1                 },
 317 { "",       255,    255,    -1                 },
 318 { "",       255,    255,    -1                 },
 319 { "",       255,    255,    -1                 },
 320 { "",       255,    255,    -1                 },
 321 { "",       255,    255,    -1                 },
 322 { "",       255,    255,    -1                 },
 323 { "",       255,    255,    -1                 },
 324 { "",       255,    255,    -1                 },
 325 { "",       255,    255,    -1                 },
 326 { "",       255,    255,    -1                 },
 327 { "",       255,    255,    -1                 },
 328 { "",       255,    255,    -1                 },
 329 { "",       255,    255,    -1                 },
 330 { "",       255,    255,    -1                 },
 331 };
 332
 333 char *key_text[256];
 334
 335
 336 unsigned char key_to_ascii(int keycode )
 337 {
 338         int shifted;
 339
 340         shifted = keycode & KEY_SHIFTED;
 341         keycode &= 0xFF;
 342
 343         if (shifted)
 344                 return key_properties[keycode].shifted_ascii_value;
 345         else
 346                 return key_properties[keycode].ascii_value;
 347 }
 348
 349
 350 /* The list of keybindings */
 351 static char *key_binding_list[256];
 352
 353
 354 /* get the action bound to a key, if any */
 355 char *key_binding(ubyte keycode)
 356 {
 357         return key_binding_list[keycode];
 358 }
 359
 360
 361 /* Write key bindings to file */
 362 void key_write_bindings(CFILE *file)
 363 {
 364         int i;
 365
 366         for (i = 0; i < 256; i++)
 367                 if (key_binding_list[i])
 368                         PHYSFSX_printf(file, "bind %s \"%s\"\n", key_text[i], key_binding_list[i]);
 369 }
 370
 371
 372 /* bind */
 373 void key_cmd_bind(int argc, char **argv)
 374 {
 375         char buf[CMD_MAX_LENGTH] = "";
 376         int key = -1;
 377         int i;
 378
 379         if (argc < 2)
 380         {
 381                 con_printf(CON_NORMAL, "key bindings:\n");
 382                 for (i = 0; i < 256; i++) {
 383                         if (!key_binding_list[i])
 384                                 continue;
 385                         con_printf(CON_NORMAL, "%s: %s\n", key_text[i], key_binding_list[i]);
 386                 }
 387                 return;
 388         }
 389
 390         for (i = 0; i < 256; i++) {
 391                 if (!stricmp(argv[1], key_text[i])) {
 392                         key = i;
 393                         break;
 394                 }
 395         }
 396
 397         if (key < 0) {
 398                 con_printf(CON_CRITICAL, "bind: key %s not found\n", argv[1]);
 399                 return;
 400         }
 401
 402         if (argc < 3) {
 403                 if (key_binding_list[key])
 404                         con_printf(CON_NORMAL, "%s: %s\n", key_text[key], key_binding_list[key]);
 405                 else
 406                         con_printf(CON_NORMAL, "%s is unbound\n", key_text[key]);
 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         if (key_binding_list[key])
 417                 d_free(key_binding_list[key]);
 418         key_binding_list[key] = d_strdup(buf);
 419 }
 420
 421
 422 /* unbind */
 423 void key_cmd_unbind(int argc, char **argv)
 424 {
 425         unsigned int key;
 426
 427         if (argc < 2)
 428                 return;
 429
 430         for (key = 0; key < 256; key++) {
 431                 if (!stricmp(argv[1], key_text[key])) {
 432                         break;
 433                 }
 434         }
 435
 436         if (key_binding_list[key])
 437                 d_free(key_binding_list[key]);
 438         key_binding_list[key] = NULL;
 439 }
 440
 441
 442 void key_handle_binding(int keycode, int state)
 443 {
 444         if (!key_binding_list[keycode])
 445                 return;
 446
 447         if (Game_paused)
 448                 return;
 449
 450         if (Function_mode != FMODE_GAME)
 451                 return;
 452
 453         if (CON_isVisible())
 454                 return;
 455
 456         if (!state && key_binding_list[keycode][0] == '+')
 457                 cmd_appendf("-%s", &key_binding_list[keycode][1]);
 458         else if (state)
 459                 cmd_append(key_binding_list[keycode]);
 460 }
 461
 462
 463 void key_handler(SDL_KeyboardEvent *event)
 464 {
 465         int i, event_key, key_state;
 466
 467         if (event->keysym.sym != SDLK_UNKNOWN)
 468                 event_key = event->keysym.sym;
 469         else
 470                 event_key = 0x1000 | event->keysym.scancode; // hardware scancode, definitions in #ifdefs above
 471
 472         key_state = (event->state == SDL_PRESSED);
 473         //=====================================================
 474         //Here a translation from win keycodes to mac keycodes!
 475         //=====================================================
 476
 477         for (i = 255; i >= 0; i--) {
 478                 if (key_properties[i].sym == event_key) {
 479                         vkey_handler(i, key_state);
 480                 }
 481         }
 482 }
 483
 484
 485 void vkey_handler(int keycode, int state)
 486 {
 487         unsigned char temp;
 488         Key_info *key;
 489
 490                 key = &(key_data.keys[keycode]);
 491                         key_handle_binding(keycode, state);
 492
 493                         if (state) {
 494                                 keyd_last_pressed = keycode;
 495                                 keyd_pressed[keycode] = 1;
 496                                 key->downcount += state;
 497                                 key->state = 1;
 498                                 key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
 499                                 key->counter++;
 500                         } else {
 501                                 keyd_pressed[keycode] = 0;
 502                                 keyd_last_released = keycode;
 503                                 key->upcount += key->state;
 504                                 key->state = 0;
 505                                 key->counter = 0;
 506                                 key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
 507                         }
 508
 509                 if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
 510                         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
 511                                 keycode |= KEY_SHIFTED;
 512                         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
 513                                 keycode |= KEY_ALTED;
 514                         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
 515                                 keycode |= KEY_CTRLED;
 516                         if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA])
 517                                 keycode |= KEY_METAED;
 518                         if ( keyd_pressed[KEY_DELETE] )
 519                                 keycode |= KEY_DEBUGGED;
 520
 521                         temp = key_data.keytail + 1;
 522                         if ( temp >= KEY_BUFFER_SIZE ) temp=0;
 523                         if (temp!=key_data.keyhead)     {
 524                                 key_data.keybuffer[key_data.keytail] = keycode;
 525                                 key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
 526                                 key_data.keytail = temp;
 527                         }
 528                 }
 529                 key->last_state = state;
 530 }
 531
 532 void key_close()
 533 {
 534         int i;
 535
 536         for (i = 0; i < 256; i++)
 537                 if (key_binding_list[i])
 538                         d_free(key_binding_list[i]);
 539
 540         for (i = 0; i < MOUSE_MAX_BUTTONS; i++) {
 541                 d_free(key_text[KEY_MB1 + i]);
 542         }
 543
 544         Installed = 0;
 545 }
 546
 547 void key_init()
 548 {
 549         int i;
 550
 551         if (Installed) return;
 552
 553         Installed=1;
 554
 555         keyd_time_when_last_pressed = timer_get_fixed_seconds();
 556         keyd_buffer_type = 1;
 557         keyd_repeat = 1;
 558
 559         for(i=0; i<256; i++)
 560                 key_text[i] = key_properties[i].key_text;
 561
 562         for (i = 0; i < MOUSE_MAX_BUTTONS; i++) {
 563                 char temp[10];
 564                 sprintf(temp, "MB%d", i + 1);
 565                 key_text[KEY_MB1 + i] = d_strdup(temp);
 566         }
 567
 568         cmd_addcommand("bind", key_cmd_bind);
 569         cmd_addcommand("unbind", key_cmd_unbind);
 570
 571         // Clear the keyboard array
 572         key_flush();
 573         atexit(key_close);
 574 }
 575
 576 void key_flush()
 577 {
 578         int i;
 579         fix curtime;
 580
 581         if (!Installed)
 582                 key_init();
 583
 584         key_data.keyhead = key_data.keytail = 0;
 585
 586         //Clear the keyboard buffer
 587         for (i=0; i<KEY_BUFFER_SIZE; i++ ) {
 588                 key_data.keybuffer[i] = 0;
 589                 key_data.time_pressed[i] = 0;
 590         }
 591
 592 //use gettimeofday here:
 593         curtime = timer_get_fixed_seconds();
 594
 595         for (i=0; i<256; i++) {
 596                 keyd_pressed[i] = 0;
 597                 key_data.keys[i].state = 1;
 598                 key_data.keys[i].last_state = 0;
 599                 key_data.keys[i].timewentdown = curtime;
 600                 key_data.keys[i].downcount = 0;
 601                 key_data.keys[i].upcount = 0;
 602                 key_data.keys[i].timehelddown = 0;
 603                 key_data.keys[i].counter = 0;
 604         }
 605 }
 606
 607 int add_one(int n)
 608 {
 609         n++;
 610         if ( n >= KEY_BUFFER_SIZE ) n = 0;
 611
 612         return n;
 613 }
 614
 615 int key_checkch()
 616 {
 617         int is_one_waiting = 0;
 618
 619         event_poll();
 620         if (key_data.keytail != key_data.keyhead)
 621                 is_one_waiting = 1;
 622
 623         return is_one_waiting;
 624 }
 625
 626 int key_inkey()
 627 {
 628         int key = 0;
 629
 630         if (!Installed)
 631                 key_init();
 632
 633         event_poll();
 634         if (key_data.keytail!=key_data.keyhead) {
 635                 key = key_data.keybuffer[key_data.keyhead];
 636                 key_data.keyhead = add_one(key_data.keyhead);
 637         }
 638         else
 639                 timer_delay(1);
 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
 651         event_poll();
 652         if (key_data.keytail != key_data.keyhead) {
 653                 key = key_data.keybuffer[key_data.keyhead];
 654                 *time = key_data.time_pressed[key_data.keyhead];
 655                 key_data.keyhead = add_one(key_data.keyhead);
 656         }
 657
 658         return key;
 659 }
 660
 661 int key_peekkey()
 662 {
 663         int key = 0;
 664
 665         event_poll();
 666         if (key_data.keytail != key_data.keyhead)
 667                 key = key_data.keybuffer[key_data.keyhead];
 668
 669         return key;
 670 }
 671
 672 int key_getch()
 673 {
 674         int dummy = 0;
 675
 676         if (!Installed)
 677                 return 0;
 678 //              return getch();
 679
 680         while (!key_checkch())
 681                 dummy++;
 682
 683         return key_inkey();
 684 }
 685
 686 unsigned int key_get_shift_status()
 687 {
 688         unsigned int shift_status = 0;
 689
 690         if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
 691                 shift_status |= KEY_SHIFTED;
 692
 693         if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
 694                 shift_status |= KEY_ALTED;
 695
 696         if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
 697                 shift_status |= KEY_CTRLED;
 698
 699         if ( keyd_pressed[KEY_LMETA] || keyd_pressed[KEY_RMETA] )
 700                 shift_status |= KEY_METAED;
 701
 702 #ifndef NDEBUG
 703         if (keyd_pressed[KEY_DELETE])
 704                 shift_status |=KEY_DEBUGGED;
 705 #endif
 706
 707         return shift_status;
 708 }
 709
 710 // Returns the number of seconds this key has been down since last call.
 711 fix key_down_time(int scancode)
 712 {
 713         fix time_down, time;
 714
 715         event_poll();
 716         if ((scancode<0) || (scancode>255)) return 0;
 717
 718         if (!keyd_pressed[scancode]) {
 719                 time_down = key_data.keys[scancode].timehelddown;
 720                 key_data.keys[scancode].timehelddown = 0;
 721         } else {
 722                 time = timer_get_fixed_seconds();
 723                 time_down = time - key_data.keys[scancode].timewentdown;
 724                 key_data.keys[scancode].timewentdown = time;
 725         }
 726
 727         return time_down;
 728 }
 729
 730 unsigned int key_down_count(int scancode)
 731 {
 732         int n;
 733
 734         event_poll();
 735         if ((scancode<0) || (scancode>255)) return 0;
 736
 737         n = key_data.keys[scancode].downcount;
 738         key_data.keys[scancode].downcount = 0;
 739
 740         return n;
 741 }
 742
 743 unsigned int key_up_count(int scancode)
 744 {
 745         int n;
 746
 747         event_poll();
 748         if ((scancode<0) || (scancode>255)) return 0;
 749
 750         n = key_data.keys[scancode].upcount;
 751         key_data.keys[scancode].upcount = 0;
 752
 753         return n;
 754 }