vcs.maemo.org Git - neverball/blob - share/config.c

   1 /*
   2  * Copyright (C) 2003 Robert Kooima
   3  *
   4  * NEVERBALL is  free software; you can redistribute  it and/or modify
   5  * it under the  terms of the GNU General  Public License as published
   6  * by the Free  Software Foundation; either version 2  of the License,
   7  * or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT  ANY  WARRANTY;  without   even  the  implied  warranty  of
  11  * MERCHANTABILITY or  FITNESS FOR A PARTICULAR PURPOSE.   See the GNU
  12  * General Public License for more details.
  13  */
  14
  15 #include <SDL.h>
  16 #include <SDL_mixer.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <stdio.h>
  20 #include <errno.h>
  21 #include <math.h>
  22
  23 #include "config.h"
  24 #include "glext.h"
  25 #include "vec3.h"
  26
  27 /*---------------------------------------------------------------------------*/
  28
  29 /* Define the mkdir symbol. */
  30
  31 #ifdef _WIN32
  32 #include <direct.h>
  33 #else
  34 #include <sys/stat.h>
  35 #endif
  36
  37 /*---------------------------------------------------------------------------*/
  38
  39 static int   option_d[CONFIG_OPTION_D_COUNT];
  40 static char *option_s[CONFIG_OPTION_S_COUNT];
  41
  42 static int dirty = 0;
  43
  44 /*---------------------------------------------------------------------------*/
  45
  46 static void config_key(const char *s, int i, int d)
  47 {
  48     int c;
  49
  50     config_set_d(i, d);
  51
  52     for (c = 0; c < SDLK_LAST; c++)
  53         if (strcmp(s, SDL_GetKeyName(c)) == 0)
  54         {
  55             config_set_d(i, c);
  56             break;
  57         }
  58 }
  59
  60 /*---------------------------------------------------------------------------*/
  61
  62 void config_init(void)
  63 {
  64     memset(option_d, 0, sizeof (option_d));
  65     memset(option_s, 0, sizeof (option_s));
  66
  67     config_set_d(CONFIG_FULLSCREEN,           DEFAULT_FULLSCREEN);
  68     config_set_d(CONFIG_WIDTH,                DEFAULT_WIDTH);
  69     config_set_d(CONFIG_HEIGHT,               DEFAULT_HEIGHT);
  70     config_set_d(CONFIG_STEREO,               DEFAULT_STEREO);
  71     config_set_d(CONFIG_CAMERA,               DEFAULT_CAMERA);
  72     config_set_d(CONFIG_TEXTURES,             DEFAULT_TEXTURES);
  73     config_set_d(CONFIG_GEOMETRY,             DEFAULT_GEOMETRY);
  74     config_set_d(CONFIG_REFLECTION,           DEFAULT_REFLECTION);
  75     config_set_d(CONFIG_BACKGROUND,           DEFAULT_BACKGROUND);
  76     config_set_d(CONFIG_SHADOW,               DEFAULT_SHADOW);
  77     config_set_d(CONFIG_AUDIO_RATE,           DEFAULT_AUDIO_RATE);
  78     config_set_d(CONFIG_AUDIO_BUFF,           DEFAULT_AUDIO_BUFF);
  79     config_set_d(CONFIG_MOUSE_SENSE,          DEFAULT_MOUSE_SENSE);
  80     config_set_d(CONFIG_MOUSE_INVERT,         DEFAULT_MOUSE_INVERT);
  81     config_set_d(CONFIG_NICE,                 DEFAULT_NICE);
  82     config_set_d(CONFIG_FPS,                  DEFAULT_FPS);
  83     config_set_d(CONFIG_SOUND_VOLUME,         DEFAULT_SOUND_VOLUME);
  84     config_set_d(CONFIG_MUSIC_VOLUME,         DEFAULT_MUSIC_VOLUME);
  85     config_set_d(CONFIG_JOYSTICK,             DEFAULT_JOYSTICK);
  86     config_set_d(CONFIG_JOYSTICK_DEVICE,      DEFAULT_JOYSTICK_DEVICE);
  87     config_set_d(CONFIG_JOYSTICK_AXIS_X,      DEFAULT_JOYSTICK_AXIS_X);
  88     config_set_d(CONFIG_JOYSTICK_AXIS_Y,      DEFAULT_JOYSTICK_AXIS_Y);
  89     config_set_d(CONFIG_JOYSTICK_BUTTON_A,    DEFAULT_JOYSTICK_BUTTON_A);
  90     config_set_d(CONFIG_JOYSTICK_BUTTON_B,    DEFAULT_JOYSTICK_BUTTON_B);
  91     config_set_d(CONFIG_JOYSTICK_BUTTON_L,    DEFAULT_JOYSTICK_BUTTON_L);
  92     config_set_d(CONFIG_JOYSTICK_BUTTON_R,    DEFAULT_JOYSTICK_BUTTON_R);
  93     config_set_d(CONFIG_JOYSTICK_BUTTON_EXIT, DEFAULT_JOYSTICK_BUTTON_EXIT);
  94     config_set_d(CONFIG_JOYSTICK_CAMERA_1,    DEFAULT_JOYSTICK_CAMERA_1);
  95     config_set_d(CONFIG_JOYSTICK_CAMERA_2,    DEFAULT_JOYSTICK_CAMERA_2);
  96     config_set_d(CONFIG_JOYSTICK_CAMERA_3,    DEFAULT_JOYSTICK_CAMERA_3);
  97     config_set_d(CONFIG_KEY_CAMERA_1,         DEFAULT_KEY_CAMERA_1);
  98     config_set_d(CONFIG_KEY_CAMERA_2,         DEFAULT_KEY_CAMERA_2);
  99     config_set_d(CONFIG_KEY_CAMERA_3,         DEFAULT_KEY_CAMERA_3);
 100     config_set_d(CONFIG_KEY_CAMERA_R,         DEFAULT_KEY_CAMERA_R);
 101     config_set_d(CONFIG_KEY_CAMERA_L,         DEFAULT_KEY_CAMERA_L);
 102     config_set_d(CONFIG_VIEW_FOV,             DEFAULT_VIEW_FOV);
 103     config_set_d(CONFIG_VIEW_DP,              DEFAULT_VIEW_DP);
 104     config_set_d(CONFIG_VIEW_DC,              DEFAULT_VIEW_DC);
 105     config_set_d(CONFIG_VIEW_DZ,              DEFAULT_VIEW_DZ);
 106     config_set_d(CONFIG_ROTATE_FAST,          DEFAULT_ROTATE_FAST);
 107     config_set_d(CONFIG_ROTATE_SLOW,          DEFAULT_ROTATE_SLOW);
 108     config_set_d(CONFIG_MODE,                 DEFAULT_MODE);
 109     config_set_d(CONFIG_CHEAT,                DEFAULT_CHEAT);
 110     config_set_s(CONFIG_PLAYER,               DEFAULT_PLAYER);
 111     config_set_s(CONFIG_BALL,                 DEFAULT_BALL);
 112     config_set_s(CONFIG_BALL_BONUS,           DEFAULT_BALL_BONUS);
 113     config_set_s(CONFIG_LANG,                 DEFAULT_LANG);
 114 }
 115
 116 void config_load(void)
 117 {
 118     FILE *fp;
 119
 120     if ((fp = fopen(config_user(USER_CONFIG_FILE), "r")))
 121     {
 122         char buf[MAXSTR];
 123         char key[MAXSTR];
 124         char val[MAXSTR];
 125
 126         while (fgets(buf, MAXSTR, fp))
 127             if (sscanf(buf, "%s %s", key, val) == 2)
 128             {
 129                 if      (strcmp(key, "fullscreen")            == 0)
 130                     config_set_d(CONFIG_FULLSCREEN,           atoi(val));
 131                 else if (strcmp(key, "width")                 == 0)
 132                     config_set_d(CONFIG_WIDTH,                atoi(val));
 133                 else if (strcmp(key, "height")                == 0)
 134                     config_set_d(CONFIG_HEIGHT,               atoi(val));
 135                 else if (strcmp(key, "stereo")                == 0)
 136                     config_set_d(CONFIG_STEREO,               atoi(val));
 137                 else if (strcmp(key, "camera")                == 0)
 138                     config_set_d(CONFIG_CAMERA,               atoi(val));
 139                 else if (strcmp(key, "textures")              == 0)
 140                     config_set_d(CONFIG_TEXTURES,             atoi(val));
 141                 else if (strcmp(key, "geometry")              == 0)
 142                     config_set_d(CONFIG_GEOMETRY,             atoi(val));
 143                 else if (strcmp(key, "reflection")            == 0)
 144                     config_set_d(CONFIG_REFLECTION,           atoi(val));
 145                 else if (strcmp(key, "background")            == 0)
 146                     config_set_d(CONFIG_BACKGROUND,           atoi(val));
 147                 else if (strcmp(key, "shadow")                == 0)
 148                     config_set_d(CONFIG_SHADOW,               atoi(val));
 149                 else if (strcmp(key, "audio_rate")            == 0)
 150                     config_set_d(CONFIG_AUDIO_RATE,           atoi(val));
 151                 else if (strcmp(key, "audio_buff")            == 0)
 152                     config_set_d(CONFIG_AUDIO_BUFF,           atoi(val));
 153                 else if (strcmp(key, "mouse_sense")           == 0)
 154                     config_set_d(CONFIG_MOUSE_SENSE,          atoi(val));
 155                 else if (strcmp(key, "mouse_invert")          == 0)
 156                     config_set_d(CONFIG_MOUSE_INVERT,         atoi(val));
 157                 else if (strcmp(key, "nice")                  == 0)
 158                     config_set_d(CONFIG_NICE,                 atoi(val));
 159                 else if (strcmp(key, "fps")                   == 0)
 160                     config_set_d(CONFIG_FPS,                  atoi(val));
 161                 else if (strcmp(key, "sound_volume")          == 0)
 162                     config_set_d(CONFIG_SOUND_VOLUME,         atoi(val));
 163                 else if (strcmp(key, "music_volume")          == 0)
 164                     config_set_d(CONFIG_MUSIC_VOLUME,         atoi(val));
 165                 else if (strcmp(key, "joystick")              == 0)
 166                     config_set_d(CONFIG_JOYSTICK,             atoi(val));
 167                 else if (strcmp(key, "joystick_device")       == 0)
 168                     config_set_d(CONFIG_JOYSTICK_DEVICE,      atoi(val));
 169                 else if (strcmp(key, "joystick_axis_x")       == 0)
 170                     config_set_d(CONFIG_JOYSTICK_AXIS_X,      atoi(val));
 171                 else if (strcmp(key, "joystick_axis_y")       == 0)
 172                     config_set_d(CONFIG_JOYSTICK_AXIS_Y,      atoi(val));
 173                 else if (strcmp(key, "joystick_button_a")     == 0)
 174                     config_set_d(CONFIG_JOYSTICK_BUTTON_A,    atoi(val));
 175                 else if (strcmp(key, "joystick_button_b")     == 0)
 176                     config_set_d(CONFIG_JOYSTICK_BUTTON_B,    atoi(val));
 177                 else if (strcmp(key, "joystick_button_r")     == 0)
 178                     config_set_d(CONFIG_JOYSTICK_BUTTON_R,    atoi(val));
 179                 else if (strcmp(key, "joystick_button_l")     == 0)
 180                     config_set_d(CONFIG_JOYSTICK_BUTTON_L,    atoi(val));
 181                 else if (strcmp(key, "joystick_button_exit")  == 0)
 182                     config_set_d(CONFIG_JOYSTICK_BUTTON_EXIT, atoi(val));
 183                 else if (strcmp(key, "joystick_camera_1")     == 0)
 184                     config_set_d(CONFIG_JOYSTICK_CAMERA_1,    atoi(val));
 185                 else if (strcmp(key, "joystick_camera_2")     == 0)
 186                     config_set_d(CONFIG_JOYSTICK_CAMERA_2,    atoi(val));
 187                 else if (strcmp(key, "joystick_camera_3")     == 0)
 188                     config_set_d(CONFIG_JOYSTICK_CAMERA_3,    atoi(val));
 189                 else if (strcmp(key, "view_fov")              == 0)
 190                     config_set_d(CONFIG_VIEW_FOV,             atoi(val));
 191                 else if (strcmp(key, "view_dp")               == 0)
 192                     config_set_d(CONFIG_VIEW_DP,              atoi(val));
 193                 else if (strcmp(key, "view_dc")               == 0)
 194                     config_set_d(CONFIG_VIEW_DC,              atoi(val));
 195                 else if (strcmp(key, "view_dz")               == 0)
 196                     config_set_d(CONFIG_VIEW_DZ,              atoi(val));
 197                 else if (strcmp(key, "rotate_fast")           == 0)
 198                     config_set_d(CONFIG_ROTATE_FAST,          atoi(val));
 199                 else if (strcmp(key, "rotate_slow")           == 0)
 200                     config_set_d(CONFIG_ROTATE_SLOW,          atoi(val));
 201                 else if (strcmp(key, "mode")                  == 0)
 202                     config_set_d(CONFIG_MODE,                 atoi(val));
 203                 else if (strcmp(key, "cheat") == 0 && ALLOW_CHEAT)
 204                     config_set_d(CONFIG_CHEAT,                atoi(val));
 205
 206                 else if (strcmp(key, "key_camera_1")  == 0)
 207                     config_key(val, CONFIG_KEY_CAMERA_1, DEFAULT_KEY_CAMERA_1);
 208                 else if (strcmp(key, "key_camera_2")  == 0)
 209                     config_key(val, CONFIG_KEY_CAMERA_2, DEFAULT_KEY_CAMERA_2);
 210                 else if (strcmp(key, "key_camera_3")  == 0)
 211                     config_key(val, CONFIG_KEY_CAMERA_3, DEFAULT_KEY_CAMERA_3);
 212                 else if (strcmp(key, "key_camera_r")  == 0)
 213                     config_key(val, CONFIG_KEY_CAMERA_R, DEFAULT_KEY_CAMERA_R);
 214                 else if (strcmp(key, "key_camera_l")  == 0)
 215                     config_key(val, CONFIG_KEY_CAMERA_L, DEFAULT_KEY_CAMERA_L);
 216
 217                 else if (strcmp(key, "player")     == 0)
 218                     config_set_s(CONFIG_PLAYER,     val);
 219                 else if (strcmp(key, "ball")       == 0)
 220                     config_set_s(CONFIG_BALL,       val);
 221                 else if (strcmp(key, "ball_bonus") == 0)
 222                     config_set_s(CONFIG_BALL_BONUS, val);
 223                 else if (strcmp(key, "lang")       == 0)
 224                     config_set_s(CONFIG_LANG,       val);
 225             }
 226
 227         fclose(fp);
 228
 229         dirty = 0;
 230     }
 231 }
 232
 233 void config_save(void)
 234 {
 235     FILE *fp;
 236
 237     if (dirty && (fp = fopen(config_user(USER_CONFIG_FILE), "w")))
 238     {
 239         fprintf(fp, "fullscreen           %d\n",
 240                 option_d[CONFIG_FULLSCREEN]);
 241         fprintf(fp, "width                %d\n",
 242                 option_d[CONFIG_WIDTH]);
 243         fprintf(fp, "height               %d\n",
 244                 option_d[CONFIG_HEIGHT]);
 245         fprintf(fp, "stereo               %d\n",
 246                 option_d[CONFIG_STEREO]);
 247         fprintf(fp, "camera               %d\n",
 248                 option_d[CONFIG_CAMERA]);
 249         fprintf(fp, "textures             %d\n",
 250                 option_d[CONFIG_TEXTURES]);
 251         fprintf(fp, "geometry             %d\n",
 252                 option_d[CONFIG_GEOMETRY]);
 253         fprintf(fp, "reflection           %d\n",
 254                 option_d[CONFIG_REFLECTION]);
 255         fprintf(fp, "background           %d\n",
 256                 option_d[CONFIG_BACKGROUND]);
 257         fprintf(fp, "shadow               %d\n",
 258                 option_d[CONFIG_SHADOW]);
 259         fprintf(fp, "audio_rate           %d\n",
 260                 option_d[CONFIG_AUDIO_RATE]);
 261         fprintf(fp, "audio_buff           %d\n",
 262                 option_d[CONFIG_AUDIO_BUFF]);
 263         fprintf(fp, "mouse_sense          %d\n",
 264                 option_d[CONFIG_MOUSE_SENSE]);
 265         fprintf(fp, "mouse_invert         %d\n",
 266                 option_d[CONFIG_MOUSE_INVERT]);
 267         fprintf(fp, "nice                 %d\n",
 268                 option_d[CONFIG_NICE]);
 269         fprintf(fp, "fps                  %d\n",
 270                 option_d[CONFIG_FPS]);
 271         fprintf(fp, "sound_volume         %d\n",
 272                 option_d[CONFIG_SOUND_VOLUME]);
 273         fprintf(fp, "music_volume         %d\n",
 274                 option_d[CONFIG_MUSIC_VOLUME]);
 275         fprintf(fp, "joystick             %d\n",
 276                 option_d[CONFIG_JOYSTICK]);
 277         fprintf(fp, "joystick_device      %d\n",
 278                 option_d[CONFIG_JOYSTICK_DEVICE]);
 279         fprintf(fp, "joystick_axis_x      %d\n",
 280                 option_d[CONFIG_JOYSTICK_AXIS_X]);
 281         fprintf(fp, "joystick_axis_y      %d\n",
 282                 option_d[CONFIG_JOYSTICK_AXIS_Y]);
 283         fprintf(fp, "joystick_button_a    %d\n",
 284                 option_d[CONFIG_JOYSTICK_BUTTON_A]);
 285         fprintf(fp, "joystick_button_b    %d\n",
 286                 option_d[CONFIG_JOYSTICK_BUTTON_B]);
 287         fprintf(fp, "joystick_button_r    %d\n",
 288                 option_d[CONFIG_JOYSTICK_BUTTON_R]);
 289         fprintf(fp, "joystick_button_l    %d\n",
 290                 option_d[CONFIG_JOYSTICK_BUTTON_L]);
 291         fprintf(fp, "joystick_button_exit %d\n",
 292                 option_d[CONFIG_JOYSTICK_BUTTON_EXIT]);
 293         fprintf(fp, "joystick_camera_1    %d\n",
 294                 option_d[CONFIG_JOYSTICK_CAMERA_1]);
 295         fprintf(fp, "joystick_camera_2    %d\n",
 296                 option_d[CONFIG_JOYSTICK_CAMERA_2]);
 297         fprintf(fp, "joystick_camera_3    %d\n",
 298                 option_d[CONFIG_JOYSTICK_CAMERA_3]);
 299         fprintf(fp, "view_fov             %d\n",
 300                 option_d[CONFIG_VIEW_FOV]);
 301         fprintf(fp, "view_dp              %d\n",
 302                 option_d[CONFIG_VIEW_DP]);
 303         fprintf(fp, "view_dc              %d\n",
 304                 option_d[CONFIG_VIEW_DC]);
 305         fprintf(fp, "view_dz              %d\n",
 306                 option_d[CONFIG_VIEW_DZ]);
 307         fprintf(fp, "rotate_fast          %d\n",
 308                 option_d[CONFIG_ROTATE_FAST]);
 309         fprintf(fp, "rotate_slow          %d\n",
 310                 option_d[CONFIG_ROTATE_SLOW]);
 311         fprintf(fp, "mode                 %d\n",
 312                 option_d[CONFIG_MODE]);
 313
 314         if (option_d[CONFIG_CHEAT])
 315             fprintf(fp,
 316                     "cheat                %d\n",
 317                     option_d[CONFIG_CHEAT]);
 318
 319         fprintf(fp, "key_camera_1         %s\n",
 320                 SDL_GetKeyName(option_d[CONFIG_KEY_CAMERA_1]));
 321         fprintf(fp, "key_camera_2         %s\n",
 322                 SDL_GetKeyName(option_d[CONFIG_KEY_CAMERA_2]));
 323         fprintf(fp, "key_camera_3         %s\n",
 324                 SDL_GetKeyName(option_d[CONFIG_KEY_CAMERA_3]));
 325         fprintf(fp, "key_camera_r         %s\n",
 326                 SDL_GetKeyName(option_d[CONFIG_KEY_CAMERA_R]));
 327         fprintf(fp, "key_camera_l         %s\n",
 328                 SDL_GetKeyName(option_d[CONFIG_KEY_CAMERA_L]));
 329
 330         fprintf(fp, "player               %s\n", option_s[CONFIG_PLAYER]);
 331         fprintf(fp, "ball                 %s\n", option_s[CONFIG_BALL]);
 332         fprintf(fp, "ball_bonus           %s\n", option_s[CONFIG_BALL_BONUS]);
 333         fprintf(fp, "lang                 %s\n", option_s[CONFIG_LANG]);
 334
 335         fclose(fp);
 336     }
 337
 338     dirty = 0;
 339 }
 340
 341 /*---------------------------------------------------------------------------*/
 342
 343 int config_mode(int f, int w, int h)
 344 {
 345     int stereo  = config_get_d(CONFIG_STEREO)     ? 1 : 0;
 346     int stencil = config_get_d(CONFIG_REFLECTION) ? 1 : 0;
 347
 348     SDL_GL_SetAttribute(SDL_GL_STEREO,       stereo);
 349     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, stencil);
 350
 351     /* Try to set the currently specified mode. */
 352
 353     if (SDL_SetVideoMode(w, h, 0, SDL_OPENGL | (f ? SDL_FULLSCREEN : 0)))
 354     {
 355         config_set_d(CONFIG_FULLSCREEN, f);
 356         config_set_d(CONFIG_WIDTH, w);
 357         config_set_d(CONFIG_HEIGHT, h);
 358
 359         glViewport(0, 0, w, h);
 360         glClearColor(0.0f, 0.0f, 0.1f, 0.0f);
 361
 362         glEnable(GL_NORMALIZE);
 363         glEnable(GL_CULL_FACE);
 364         glEnable(GL_DEPTH_TEST);
 365         glEnable(GL_TEXTURE_2D);
 366         glEnable(GL_LIGHTING);
 367
 368         return 1;
 369     }
 370
 371     /* If the mode failed, try it without stereo. */
 372
 373     else if (stereo)
 374     {
 375         config_set_d(CONFIG_STEREO, 0);
 376         return config_mode(f, w, h);
 377     }
 378
 379     /* If that mode failed, try it without reflections. */
 380
 381     else if (stencil)
 382     {
 383         config_set_d(CONFIG_REFLECTION, 0);
 384         return config_mode(f, w, h);
 385     }
 386
 387     /* If THAT mode failed, punt. */
 388
 389     return 0;
 390 }
 391
 392 /*---------------------------------------------------------------------------*/
 393
 394 void config_set_d(int i, int d)
 395 {
 396     option_d[i] = d;
 397     dirty = 1;
 398 }
 399
 400 void config_tgl_d(int i)
 401 {
 402     option_d[i] = (option_d[i] ? 0 : 1);
 403     dirty = 1;
 404 }
 405
 406 int config_tst_d(int i, int d)
 407 {
 408     return (option_d[i] == d) ? 1 : 0;
 409 }
 410
 411 int config_get_d(int i)
 412 {
 413     return option_d[i];
 414 }
 415
 416 /*---------------------------------------------------------------------------*/
 417
 418 void config_set_s(int i, const char *src)
 419 {
 420     int len = (int) strlen(src);
 421
 422     if (option_s[i])
 423         free(option_s[i]);
 424
 425     if ((option_s[i] = (char *) malloc(len + 1)))
 426         strncpy(option_s[i], src, len + 1);
 427
 428     dirty = 1;
 429 }
 430
 431 void config_get_s(int i, char *dst, int len)
 432 {
 433     strncpy(dst, option_s[i], len);
 434 }
 435
 436 const char *config_simple_get_s(int i)
 437 {
 438     return option_s[i];
 439 }
 440
 441 /*---------------------------------------------------------------------------*/
 442
 443 static int grabbed = 0;
 444 static int paused  = 0;
 445
 446 void config_set_grab(void)
 447 {
 448     SDL_WarpMouse(config_get_d(CONFIG_WIDTH)  / 2,
 449                   config_get_d(CONFIG_HEIGHT) / 2);
 450     SDL_WM_GrabInput(SDL_GRAB_ON);
 451     SDL_ShowCursor(SDL_DISABLE);
 452     grabbed = 1;
 453 }
 454
 455 void config_clr_grab(void)
 456 {
 457     SDL_WM_GrabInput(SDL_GRAB_OFF);
 458     SDL_ShowCursor(SDL_ENABLE);
 459     grabbed = 0;
 460 }
 461
 462 int  config_get_grab(void)
 463 {
 464     return grabbed;
 465 }
 466
 467 int  config_get_pause(void)
 468 {
 469     return paused;
 470 }
 471
 472 void config_set_pause(void)
 473 {
 474     Mix_PauseMusic();
 475     paused = 1;
 476
 477     if (grabbed)
 478     {
 479         SDL_ShowCursor(SDL_ENABLE);
 480         SDL_WM_GrabInput(SDL_GRAB_OFF);
 481     }
 482 }
 483
 484 void config_clr_pause(void)
 485 {
 486     Mix_ResumeMusic();
 487     paused = 0;
 488
 489     if (grabbed)
 490     {
 491         SDL_WM_GrabInput(SDL_GRAB_ON);
 492         SDL_ShowCursor(SDL_DISABLE);
 493     }
 494 }
 495
 496 void config_tgl_pause(void)
 497 {
 498     if (paused)
 499         config_clr_pause();
 500     else
 501         config_set_pause();
 502 }
 503 /*---------------------------------------------------------------------------*/
 504
 505 void config_push_persp(float fov, float n, float f)
 506 {
 507     GLdouble m[4][4];
 508
 509     GLdouble r = fov / 2 * V_PI / 180;
 510     GLdouble s = sin(r);
 511     GLdouble c = cos(r) / s;
 512
 513     GLdouble a = ((GLdouble) option_d[CONFIG_WIDTH] /
 514                   (GLdouble) option_d[CONFIG_HEIGHT]);
 515
 516     glMatrixMode(GL_PROJECTION);
 517     {
 518         glPushMatrix();
 519         glLoadIdentity();
 520
 521         m[0][0] =  c/a;
 522         m[0][1] =  0.0;
 523         m[0][2] =  0.0;
 524         m[0][3] =  0.0;
 525         m[1][0] =  0.0;
 526         m[1][1] =    c;
 527         m[1][2] =  0.0;
 528         m[1][3] =  0.0;
 529         m[2][0] =  0.0;
 530         m[2][1] =  0.0;
 531         m[2][2] = -(f + n) / (f - n);
 532         m[2][3] = -1.0;
 533         m[3][0] =  0.0;
 534         m[3][1] =  0.0;
 535         m[3][2] = -2.0 * n * f / (f - n);
 536         m[3][3] =  0.0;
 537
 538         glMultMatrixd(&m[0][0]);
 539     }
 540     glMatrixMode(GL_MODELVIEW);
 541 }
 542
 543 void config_push_ortho(void)
 544 {
 545     GLdouble w = (GLdouble) option_d[CONFIG_WIDTH];
 546     GLdouble h = (GLdouble) option_d[CONFIG_HEIGHT];
 547
 548     glMatrixMode(GL_PROJECTION);
 549     {
 550         glPushMatrix();
 551         glLoadIdentity();
 552         glOrtho(0.0, w, 0.0, h, -1.0, +1.0);
 553     }
 554     glMatrixMode(GL_MODELVIEW);
 555 }
 556
 557 void config_pop_matrix(void)
 558 {
 559     glMatrixMode(GL_PROJECTION);
 560     {
 561         glPopMatrix();
 562     }
 563     glMatrixMode(GL_MODELVIEW);
 564 }
 565
 566 void config_clear(void)
 567 {
 568     if (option_d[CONFIG_REFLECTION])
 569         glClear(GL_COLOR_BUFFER_BIT |
 570                 GL_DEPTH_BUFFER_BIT |
 571                 GL_STENCIL_BUFFER_BIT);
 572     else
 573         glClear(GL_COLOR_BUFFER_BIT |
 574                 GL_DEPTH_BUFFER_BIT);
 575 }
 576
 577 /*---------------------------------------------------------------------------*/