src/sdl/main.c

   1 /* Copyright (C) 2020 SovietPony
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, version 3 of the License ONLY.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14  */
  15
  16 #ifdef __EMSCRIPTEN__
  17 #  include <emscripten.h>
  18 #endif
  19
  20 #include <SDL/SDL.h>
  21 #include <stdio.h>
  22 #include <stdarg.h>
  23 #include <stdlib.h> // srand exit
  24 #include <assert.h>
  25 #include "system.h"
  26 #include "input.h"
  27
  28 #include "player.h" // pl1 pl2
  29 #include "menu.h" // G_keyf
  30 #include "error.h" // logo
  31 #include "monster.h" // nomon
  32
  33 #include "files.h" // F_startup F_addwad F_initwads F_allocres
  34 #include "config.h" // CFG_args CFG_load CFG_save
  35 #include "args.h" // ARG_parse
  36 #include "memory.h" // M_startup
  37 #include "game.h" // G_init G_act
  38 #include "sound.h" // S_init S_done
  39 #include "music.h" // S_initmusic S_updatemusic S_donemusic
  40 #include "render.h" // R_init R_draw R_done
  41
  42 #define MODE_NONE 0
  43 #define MODE_OPENGL 1
  44 #define MODE_SOFTWARE 2
  45
  46 static Uint32 ticks;
  47 static int quit = 0;
  48 static SDL_Surface *surf = NULL;
  49 static int mode = MODE_NONE;
  50 static int text_input;
  51 static videomode_t vlist;
  52
  53 static const cfg_t arg[] = {
  54   {"file", NULL, Y_FILES},
  55   {"cheat", &cheat, Y_SW_ON},
  56 //  {"vga", &shot_vga, Y_SW_ON},
  57 //  {"musvol", &mus_vol, Y_WORD},
  58   {"mon", &nomon, Y_SW_OFF},
  59   {"warp", &_warp, Y_BYTE},
  60 //  {"config", NULL, cfg_file, Y_STRING},
  61   {NULL, NULL, 0} // end
  62 };
  63
  64 static const cfg_t cfg[] = {
  65 //  {"screenshot", &shot_vga, Y_SW_ON},
  66 //  {"music_volume", &mus_vol, Y_WORD},
  67 //  {"music_random", &music_random, Y_SW_ON},
  68 //  {"music_time", &music_time, Y_DWORD},
  69 //  {"music_fade", &music_fade, Y_DWORD},
  70   {"pl1_left", &pl1.kl, Y_KEY},
  71   {"pl1_right",&pl1.kr, Y_KEY},
  72   {"pl1_up", &pl1.ku, Y_KEY},
  73   {"pl1_down", &pl1.kd, Y_KEY},
  74   {"pl1_jump", &pl1.kj, Y_KEY},
  75   {"pl1_fire", &pl1.kf, Y_KEY},
  76   {"pl1_next", &pl1.kwr, Y_KEY},
  77   {"pl1_prev", &pl1.kwl, Y_KEY},
  78   {"pl1_use", &pl1.kp, Y_KEY},
  79   {"pl2_left", &pl2.kl, Y_KEY},
  80   {"pl2_right", &pl2.kr, Y_KEY},
  81   {"pl2_up", &pl2.ku, Y_KEY},
  82   {"pl2_down", &pl2.kd, Y_KEY},
  83   {"pl2_jump", &pl2.kj, Y_KEY},
  84   {"pl2_fire", &pl2.kf, Y_KEY},
  85   {"pl2_next", &pl2.kwr, Y_KEY},
  86   {"pl2_prev", &pl2.kwl, Y_KEY},
  87   {"pl2_use", &pl2.kp, Y_KEY},
  88   {NULL, NULL, 0} // end
  89 };
  90
  91 static void CFG_args (int argc, char **argv) {
  92   const cfg_t *list[] = { arg, R_args(), S_args(), MUS_args() };
  93   ARG_parse(argc, argv, 4, list);
  94 }
  95
  96 static void CFG_load (void) {
  97   const cfg_t *list[] = { cfg, R_conf(), S_conf(), MUS_conf() };
  98   CFG_read_config("default.cfg", 4, list);
  99   CFG_read_config("doom2d.cfg", 4, list);
 100 }
 101
 102 static void CFG_save (void) {
 103   const cfg_t *list[] = { cfg, R_conf(), S_conf(), MUS_conf() };
 104   CFG_update_config("doom2d.cfg", "doom2d.cfg", 4, list, "generated by doom2d, do not modify");
 105 }
 106
 107 /* --- error.h --- */
 108
 109 void logo (const char *s, ...) {
 110   va_list ap;
 111   va_start(ap, s);
 112   vprintf(s, ap);
 113   va_end(ap);
 114   fflush(stdout);
 115 }
 116
 117 void logo_gas (int cur, int all) {
 118   // stub
 119 }
 120
 121 void ERR_failinit (char *s, ...) {
 122   va_list ap;
 123   va_start(ap, s);
 124   vprintf(s, ap);
 125   va_end(ap);
 126   puts("");
 127   abort();
 128 }
 129
 130 void ERR_fatal (char *s, ...) {
 131   va_list ap;
 132   R_done();
 133   MUS_done();
 134   S_done();
 135   M_shutdown();
 136   SDL_Quit();
 137   puts("\nCRITICAL ERROR:");
 138   va_start(ap, s);
 139   vprintf(s, ap);
 140   va_end(ap);
 141   puts("");
 142   abort();
 143 }
 144
 145 void ERR_quit (void) {
 146   quit = 1;
 147 }
 148
 149 /* --- system.h --- */
 150
 151 int Y_set_videomode_opengl (int w, int h, int fullscreen) {
 152   assert(w > 0);
 153   assert(h > 0);
 154   Uint32 flags;
 155   SDL_Surface *s;
 156   if (mode == MODE_OPENGL && surf->w == w && surf->h == h && Y_get_fullscreen() == fullscreen) {
 157     s = surf;
 158   } else {
 159     flags = SDL_DOUBLEBUF | SDL_OPENGL;
 160     if (fullscreen) {
 161       flags = flags | SDL_FULLSCREEN;
 162     }
 163 #   ifdef WIN32
 164       flags = flags | SDL_RESIZABLE;
 165 #   endif
 166     s = SDL_SetVideoMode(w, h, 0, flags);
 167     if (s != NULL) {
 168       mode = MODE_OPENGL;
 169       surf = s;
 170     } else {
 171       logo("Y_set_videomode_opengl: error: %s\n", SDL_GetError());
 172     }
 173   }
 174   return s != NULL;
 175 }
 176
 177 int Y_set_videomode_software (int w, int h, int fullscreen) {
 178   assert(w > 0);
 179   assert(h > 0);
 180   Uint32 flags;
 181   SDL_Surface *s;
 182   if (mode == MODE_OPENGL && surf->w == w && surf->h == h && Y_get_fullscreen() == fullscreen) {
 183     s = surf;
 184   } else {
 185     flags = SDL_DOUBLEBUF | SDL_SWSURFACE | SDL_HWPALETTE;
 186     if (fullscreen) {
 187       flags = flags | SDL_FULLSCREEN;
 188     }
 189 #   ifdef WIN32
 190       flags = flags | SDL_RESIZABLE;
 191 #   endif
 192     s = SDL_SetVideoMode(w, h, 8, flags);
 193     if (s != NULL) {
 194       mode = MODE_SOFTWARE;
 195       surf = s;
 196     }
 197   }
 198   return s != NULL;
 199 }
 200
 201 static void init_videomode_list (Uint32 flags) {
 202   int i, n;
 203   SDL_Rect **r;
 204   if (vlist.modes != NULL) {
 205     free(vlist.modes);
 206     vlist.modes = NULL;
 207     vlist.n = 0;
 208   }
 209   r = SDL_ListModes(NULL, flags);
 210   if (r == (SDL_Rect **)-1) {
 211     if ((flags & SDL_FULLSCREEN) == 0) {
 212       init_videomode_list(flags | SDL_FULLSCREEN);
 213     }
 214   } else if (r != (SDL_Rect**)0) {
 215     n = 0;
 216     while (r[n] != NULL) {
 217       n++;
 218     }
 219     vlist.modes = malloc(n * sizeof(videomode_size_t));
 220     if (vlist.modes != NULL) {
 221       vlist.n = n;
 222       for (i = 0; i < n; i++) {
 223         vlist.modes[i] = (videomode_size_t) {
 224           .w = r[i]->w,
 225           .h = r[i]->h
 226         };
 227       }
 228     }
 229   }
 230 }
 231
 232 const videomode_t *Y_get_videomode_list_opengl (int fullscreen) {
 233   init_videomode_list(SDL_OPENGL | (fullscreen ? SDL_FULLSCREEN : 0));
 234   return &vlist;
 235 }
 236
 237 const videomode_t *Y_get_videomode_list_software (int fullscreen) {
 238   init_videomode_list(SDL_SWSURFACE | SDL_HWPALETTE | (fullscreen ? SDL_FULLSCREEN : 0));
 239   return &vlist;
 240 }
 241
 242 void Y_get_videomode (int *w, int *h) {
 243   if (mode != MODE_NONE) {
 244     *w = surf->w;
 245     *h = surf->h;
 246   } else {
 247     *w = 0;
 248     *h = 0;
 249   }
 250 }
 251
 252 int Y_videomode_setted (void) {
 253   return mode != MODE_NONE;
 254 }
 255
 256 void Y_unset_videomode (void) {
 257   surf = NULL;
 258   mode = MODE_NONE;
 259 #ifndef __EMSCRIPTEN__
 260   SDL_QuitSubSystem(SDL_INIT_VIDEO);
 261   SDL_InitSubSystem(SDL_INIT_VIDEO);
 262 #endif
 263 }
 264
 265 void Y_set_fullscreen (int fullscreen) {
 266   int fs = Y_get_fullscreen();
 267   if (mode != MODE_NONE && fs != fullscreen) {
 268     if (SDL_WM_ToggleFullScreen(surf) == 0) {
 269       switch (mode) {
 270         case MODE_OPENGL:
 271           Y_set_videomode_opengl(surf->w, surf->h, fullscreen);
 272           break;
 273         case MODE_SOFTWARE:
 274           Y_set_videomode_software(surf->w, surf->h, fullscreen);
 275           break;
 276       }
 277     }
 278   }
 279 }
 280
 281 int Y_get_fullscreen (void) {
 282   return (mode != MODE_NONE) && ((surf->flags & SDL_FULLSCREEN) != 0);
 283 }
 284
 285 void Y_swap_buffers (void) {
 286   assert(mode == MODE_OPENGL);
 287   SDL_GL_SwapBuffers();
 288 }
 289
 290 void Y_get_buffer (byte **buf, int *w, int *h, int *pitch) {
 291   assert(mode == MODE_SOFTWARE);
 292   *buf = surf->pixels;
 293   *w = surf->w;
 294   *h = surf->h;
 295   *pitch = surf->pitch;
 296 }
 297
 298 void Y_set_vga_palette (byte *vgapal) {
 299   int i;
 300   byte *p = vgapal;
 301   assert(vgapal != NULL);
 302   assert(mode == MODE_SOFTWARE);
 303   SDL_Color colors[256];
 304   for (i = 0; i < 256; i++) {
 305     colors[i] = (SDL_Color) {
 306       .r = p[0] * 255 / 63,
 307       .g = p[1] * 255 / 63,
 308       .b = p[2] * 255 / 63
 309     };
 310     p += 3;
 311   }
 312   SDL_SetColors(surf, colors, 0, 256);
 313 }
 314
 315 void Y_repaint_rect (int x, int y, int w, int h) {
 316   assert(mode == MODE_SOFTWARE);
 317   SDL_UpdateRect(surf, x, y, w, h);
 318 }
 319
 320 void Y_repaint (void) {
 321   assert(mode == MODE_SOFTWARE);
 322   SDL_Flip(surf);
 323 }
 324
 325 void Y_enable_text_input (void) {
 326   text_input = 1;
 327 }
 328
 329 void Y_disable_text_input (void) {
 330   text_input = 0;
 331 }
 332
 333 /* --- main --- */
 334
 335 static int sdl_to_key (int code) {
 336   switch (code) {
 337     case SDLK_0: return KEY_0;
 338     case SDLK_1: return KEY_1;
 339     case SDLK_2: return KEY_2;
 340     case SDLK_3: return KEY_3;
 341     case SDLK_4: return KEY_4;
 342     case SDLK_5: return KEY_5;
 343     case SDLK_6: return KEY_6;
 344     case SDLK_7: return KEY_7;
 345     case SDLK_8: return KEY_8;
 346     case SDLK_9: return KEY_9;
 347     case SDLK_a: return KEY_A;
 348     case SDLK_b: return KEY_B;
 349     case SDLK_c: return KEY_C;
 350     case SDLK_d: return KEY_D;
 351     case SDLK_e: return KEY_E;
 352     case SDLK_f: return KEY_F;
 353     case SDLK_g: return KEY_G;
 354     case SDLK_h: return KEY_H;
 355     case SDLK_i: return KEY_I;
 356     case SDLK_j: return KEY_J;
 357     case SDLK_k: return KEY_K;
 358     case SDLK_l: return KEY_L;
 359     case SDLK_m: return KEY_M;
 360     case SDLK_n: return KEY_N;
 361     case SDLK_o: return KEY_O;
 362     case SDLK_p: return KEY_P;
 363     case SDLK_q: return KEY_Q;
 364     case SDLK_r: return KEY_R;
 365     case SDLK_s: return KEY_S;
 366     case SDLK_t: return KEY_T;
 367     case SDLK_u: return KEY_U;
 368     case SDLK_v: return KEY_V;
 369     case SDLK_w: return KEY_W;
 370     case SDLK_x: return KEY_X;
 371     case SDLK_y: return KEY_Y;
 372     case SDLK_z: return KEY_Z;
 373     case SDLK_RETURN: return KEY_RETURN;
 374     case SDLK_ESCAPE: return KEY_ESCAPE;
 375     case SDLK_BACKSPACE: return KEY_BACKSPACE;
 376     case SDLK_TAB: return KEY_TAB;
 377     case SDLK_SPACE: return KEY_SPACE;
 378     case SDLK_MINUS: return KEY_MINUS;
 379     case SDLK_EQUALS: return KEY_EQUALS;
 380     case SDLK_LEFTBRACKET: return KEY_LEFTBRACKET;
 381     case SDLK_RIGHTBRACKET: return KEY_RIGHTBRACKET;
 382     case SDLK_BACKSLASH: return KEY_BACKSLASH;
 383     case SDLK_SEMICOLON: return KEY_SEMICOLON;
 384     case SDLK_QUOTE: return KEY_APOSTROPHE;
 385     case SDLK_BACKQUOTE: return KEY_GRAVE;
 386     case SDLK_COMMA: return KEY_COMMA;
 387     case SDLK_PERIOD: return KEY_PERIOD;
 388     case SDLK_SLASH: return KEY_SLASH;
 389     case SDLK_CAPSLOCK: return KEY_CAPSLOCK;
 390     case SDLK_F1: return KEY_F1;
 391     case SDLK_F2: return KEY_F2;
 392     case SDLK_F3: return KEY_F3;
 393     case SDLK_F4: return KEY_F4;
 394     case SDLK_F5: return KEY_F5;
 395     case SDLK_F6: return KEY_F6;
 396     case SDLK_F7: return KEY_F7;
 397     case SDLK_F8: return KEY_F8;
 398     case SDLK_F9: return KEY_F9;
 399     case SDLK_F10: return KEY_F10;
 400     case SDLK_F11: return KEY_F11;
 401     case SDLK_F12: return KEY_F12;
 402     case SDLK_PRINT: return KEY_PRINTSCREEN;
 403     case SDLK_SCROLLOCK: return KEY_SCROLLLOCK;
 404     case SDLK_PAUSE: return KEY_PAUSE;
 405     case SDLK_INSERT: return KEY_INSERT;
 406     case SDLK_HOME: return KEY_HOME;
 407     case SDLK_PAGEUP: return KEY_PAGEUP;
 408     case SDLK_DELETE: return KEY_DELETE;
 409     case SDLK_END: return KEY_END;
 410     case SDLK_PAGEDOWN: return KEY_PAGEDOWN;
 411     case SDLK_RIGHT: return KEY_RIGHT;
 412     case SDLK_LEFT: return KEY_LEFT;
 413     case SDLK_DOWN: return KEY_DOWN;
 414     case SDLK_UP: return KEY_UP;
 415     case SDLK_NUMLOCK: return KEY_NUMLOCK;
 416     case SDLK_KP_DIVIDE: return KEY_KP_DIVIDE;
 417     case SDLK_KP_MULTIPLY: return KEY_KP_MULTIPLY;
 418     case SDLK_KP_MINUS: return KEY_KP_MINUS;
 419     case SDLK_KP_PLUS: return KEY_KP_PLUS;
 420     case SDLK_KP_ENTER: return KEY_KP_ENTER;
 421     case SDLK_KP0: return KEY_KP_0;
 422     case SDLK_KP1: return KEY_KP_1;
 423     case SDLK_KP2: return KEY_KP_2;
 424     case SDLK_KP3: return KEY_KP_3;
 425     case SDLK_KP4: return KEY_KP_4;
 426     case SDLK_KP5: return KEY_KP_5;
 427     case SDLK_KP6: return KEY_KP_6;
 428     case SDLK_KP7: return KEY_KP_7;
 429     case SDLK_KP8: return KEY_KP_8;
 430     case SDLK_KP9: return KEY_KP_9;
 431     case SDLK_KP_PERIOD: return KEY_KP_PERIOD;
 432     case SDLK_SYSREQ: return KEY_SYSREQ;
 433     case SDLK_LCTRL: return KEY_LCTRL;
 434     case SDLK_LSHIFT: return KEY_LSHIFT;
 435     case SDLK_LALT: return KEY_LALT;
 436     case SDLK_LSUPER: return KEY_LSUPER;
 437     case SDLK_RCTRL: return KEY_RCTRL;
 438     case SDLK_RSHIFT: return KEY_RSHIFT;
 439     case SDLK_RALT: return KEY_RALT;
 440     case SDLK_RSUPER: return KEY_RSUPER;
 441     default: return KEY_UNKNOWN;
 442   }
 443 }
 444
 445 static void poll_events (void) {
 446   int key, sym, down;
 447   SDL_Event ev;
 448   while (SDL_PollEvent(&ev)) {
 449     switch (ev.type) {
 450       case SDL_QUIT:
 451         ERR_quit();
 452         break;
 453       case SDL_VIDEORESIZE:
 454         R_set_videomode(ev.resize.w, ev.resize.h, Y_get_fullscreen());
 455         break;
 456       case SDL_KEYDOWN:
 457       case SDL_KEYUP:
 458         sym = ev.key.keysym.sym;
 459         down = ev.type == SDL_KEYDOWN;
 460         key = sdl_to_key(sym);
 461         I_press(key, down);
 462         GM_key(key, down);
 463         if (down && text_input && sym >= 0x20 && sym <= 0x7e) {
 464           // TODO fix this
 465           GM_input(sym);
 466         }
 467         break;
 468     }
 469   }
 470 }
 471
 472 static void step (void) {
 473   poll_events();
 474   MUS_update();
 475   Uint32 t = SDL_GetTicks();
 476   if (t - ticks > DELAY) {
 477     ticks = t;
 478     G_act();
 479   }
 480   R_draw();
 481 }
 482
 483 int main (int argc, char *argv[]) {
 484   logo("main: initialize SDL\n");
 485   if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) == -1) {
 486     logo("main: failed to init SDL: %s\n", SDL_GetError());
 487     return 1;
 488   }
 489   SDL_WM_SetCaption("Doom 2D (SDL)", "Doom 2D");
 490   // Player 1 defaults
 491   pl1.ku = KEY_KP_8;
 492   pl1.kd = KEY_KP_5;
 493   pl1.kl = KEY_KP_4;
 494   pl1.kr = KEY_KP_6;
 495   pl1.kf = KEY_PAGEDOWN;
 496   pl1.kj = KEY_DELETE;
 497   pl1.kwl = KEY_HOME;
 498   pl1.kwr = KEY_END;
 499   pl1.kp = KEY_KP_8;
 500   // Player 2 defaults
 501   pl2.ku = KEY_E;
 502   pl2.kd = KEY_D;
 503   pl2.kl = KEY_S;
 504   pl2.kr = KEY_F;
 505   pl2.kf = KEY_A;
 506   pl2.kj = KEY_Q;
 507   pl2.kwl = KEY_1;
 508   pl2.kwr = KEY_2;
 509   pl2.kp = KEY_E;
 510   srand(SDL_GetTicks());
 511   F_startup();
 512   F_addwad("doom2d.wad");
 513   CFG_args(argc, argv);
 514   CFG_load();
 515   F_initwads();
 516   M_startup();
 517   F_allocres();
 518   S_init();
 519   MUS_init();
 520   R_init();
 521   G_init();
 522   ticks = SDL_GetTicks();
 523 #ifdef __EMSCRIPTEN__
 524   emscripten_set_main_loop(step, 0, 1);
 525 #else
 526   while (!quit) {
 527     step();
 528   }
 529 #endif
 530   CFG_save();
 531   R_done();
 532   MUS_done();
 533   S_done();
 534   M_shutdown();
 535   SDL_Quit();
 536   return 0;
 537 }