src/sdl/main.c

   1 /*
   2    Copyright (C) Prikol Software 1996-1997
   3    Copyright (C) Aleksey Volynskov 1996-1997
   4    Copyright (C) <ARembo@gmail.com> 2011
   5
   6    This file is part of the Doom2D:Rembo project.
   7
   8    Doom2D:Rembo is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License version 2 as
  10    published by the Free Software Foundation.
  11
  12    Doom2D:Rembo is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, see <http://www.gnu.org/licenses/> or
  19    write to the Free Software Foundation, Inc.,
  20    51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  21 */
  22
  23 #ifdef __EMSCRIPTEN__
  24 #  include <emscripten.h>
  25 #endif
  26
  27 #include <SDL/SDL.h>
  28 #include <stdio.h>
  29 #include <stdarg.h>
  30 #include <stdlib.h> // srand exit
  31 #include <string.h> // strcasecmp
  32 #include <assert.h>
  33 #include "system.h"
  34 #include "input.h"
  35
  36 #include "my.h" // fexists
  37 #include "player.h" // pl1 pl2
  38 #include "menu.h" // G_keyf
  39 #include "error.h" // logo
  40
  41 #include "files.h" // F_startup F_addwad F_initwads F_allocres
  42 #include "config.h" // CFG_args CFG_load CFG_save
  43 #include "memory.h" // M_startup
  44 #include "game.h" // G_init G_act
  45 #include "sound.h" // S_init S_done
  46 #include "music.h" // S_initmusic S_updatemusic S_donemusic
  47 #include "render.h" // R_init R_draw R_done
  48
  49 #define MODE_NONE 0
  50 #define MODE_OPENGL 1
  51 #define MODE_SOFTWARE 2
  52
  53 static Uint32 ticks;
  54 static int quit = 0;
  55 static SDL_Surface *surf = NULL;
  56 static int mode = MODE_NONE;
  57
  58 /* --- error.h --- */
  59
  60 void logo (const char *s, ...) {
  61   va_list ap;
  62   va_start(ap, s);
  63   vprintf(s, ap);
  64   va_end(ap);
  65   fflush(stdout);
  66 }
  67
  68 void logo_gas (int cur, int all) {
  69   // stub
  70 }
  71
  72 void ERR_failinit (char *s, ...) {
  73   va_list ap;
  74   va_start(ap, s);
  75   vprintf(s, ap);
  76   va_end(ap);
  77   puts("");
  78   exit(1);
  79 }
  80
  81 void ERR_fatal (char *s, ...) {
  82   va_list ap;
  83   R_done();
  84   S_done();
  85   S_donemusic();
  86   M_shutdown();
  87   SDL_Quit();
  88   puts("\nКРИТИЧЕСКАЯ ОШИБКА:");
  89   va_start(ap, s);
  90   vprintf(s, ap);
  91   va_end(ap);
  92   puts("");
  93   exit(1);
  94 }
  95
  96 void ERR_quit (void) {
  97   quit = 1;
  98 }
  99
 100 /* --- system.h --- */
 101
 102 int Y_set_videomode_opengl (int w, int h, int fullscreen) {
 103   assert(w > 0);
 104   assert(h > 0);
 105   Uint32 flags;
 106   SDL_Surface *s;
 107   if (mode == MODE_OPENGL && surf->w == w && surf->h == h && Y_get_fullscreen() == fullscreen) {
 108     s = surf;
 109   } else {
 110     flags = SDL_DOUBLEBUF | SDL_OPENGL;
 111     if (fullscreen) {
 112       flags = flags | SDL_FULLSCREEN;
 113     }
 114 #   ifdef WIN32
 115       flags = flags | SDL_RESIZABLE;
 116 #   endif
 117     s = SDL_SetVideoMode(w, h, 0, flags);
 118     if (s != NULL) {
 119       mode = MODE_OPENGL;
 120       surf = s;
 121     } else {
 122       logo("Y_set_videomode_opengl: error: %s\n", SDL_GetError());
 123     }
 124   }
 125   return s != NULL;
 126 }
 127
 128 int Y_set_videomode_software (int w, int h, int fullscreen) {
 129   assert(w > 0);
 130   assert(h > 0);
 131   Uint32 flags;
 132   SDL_Surface *s;
 133   if (mode == MODE_OPENGL && surf->w == w && surf->h == h && Y_get_fullscreen() == fullscreen) {
 134     s = surf;
 135   } else {
 136     flags = SDL_DOUBLEBUF | SDL_SWSURFACE | SDL_HWPALETTE;
 137     if (fullscreen) {
 138       flags = flags | SDL_FULLSCREEN;
 139     }
 140 #   ifdef WIN32
 141       flags = flags | SDL_RESIZABLE;
 142 #   endif
 143     s = SDL_SetVideoMode(w, h, 8, flags);
 144     if (s != NULL) {
 145       mode = MODE_SOFTWARE;
 146       surf = s;
 147     }
 148   }
 149   return s != NULL;
 150 }
 151
 152 void Y_get_videomode (int *w, int *h) {
 153   if (mode != MODE_NONE) {
 154     *w = surf->w;
 155     *h = surf->h;
 156   } else {
 157     *w = 0;
 158     *h = 0;
 159   }
 160 }
 161
 162 int Y_videomode_setted (void) {
 163   return mode != MODE_NONE;
 164 }
 165
 166 void Y_unset_videomode (void) {
 167   surf = NULL;
 168   mode = MODE_NONE;
 169 #ifndef __EMSCRIPTEN__
 170   SDL_QuitSubSystem(SDL_INIT_VIDEO);
 171   SDL_InitSubSystem(SDL_INIT_VIDEO);
 172 #endif
 173 }
 174
 175 void Y_set_fullscreen (int fullscreen) {
 176   int fs = Y_get_fullscreen();
 177   if (mode != MODE_NONE && fs != fullscreen) {
 178     if (SDL_WM_ToggleFullScreen(surf) == 0) {
 179       switch (mode) {
 180         case MODE_OPENGL:
 181           Y_set_videomode_opengl(surf->w, surf->h, fullscreen);
 182           break;
 183         case MODE_SOFTWARE:
 184           Y_set_videomode_software(surf->w, surf->h, fullscreen);
 185           break;
 186       }
 187     }
 188   }
 189 }
 190
 191 int Y_get_fullscreen (void) {
 192   return (mode != MODE_NONE) && ((surf->flags & SDL_FULLSCREEN) != 0);
 193 }
 194
 195 void Y_swap_buffers (void) {
 196   assert(mode == MODE_OPENGL);
 197   SDL_GL_SwapBuffers();
 198 }
 199
 200 void Y_get_buffer (byte **buf, int *w, int *h, int *pitch) {
 201   assert(mode == MODE_SOFTWARE);
 202   *buf = surf->pixels;
 203   *w = surf->w;
 204   *h = surf->h;
 205   *pitch = surf->pitch;
 206 }
 207
 208 void Y_set_vga_palette (byte *vgapal) {
 209   int i;
 210   byte *p = vgapal;
 211   assert(vgapal != NULL);
 212   assert(mode == MODE_SOFTWARE);
 213   SDL_Color colors[256];
 214   for (i = 0; i < 256; i++) {
 215     colors[i] = (SDL_Color) {
 216       .r = p[0] * 255 / 63,
 217       .g = p[1] * 255 / 63,
 218       .b = p[2] * 255 / 63
 219     };
 220     p += 3;
 221   }
 222   SDL_SetColors(surf, colors, 0, 256);
 223 }
 224
 225 void Y_repaint_rect (int x, int y, int w, int h) {
 226   assert(mode == MODE_SOFTWARE);
 227   SDL_UpdateRect(surf, x, y, w, h);
 228 }
 229
 230 void Y_repaint (void) {
 231   assert(mode == MODE_SOFTWARE);
 232   SDL_Flip(surf);
 233 }
 234
 235 /* --- main --- */
 236
 237 static int sdl_to_key (int code) {
 238   switch (code) {
 239     case SDLK_0: return KEY_0;
 240     case SDLK_1: return KEY_1;
 241     case SDLK_2: return KEY_2;
 242     case SDLK_3: return KEY_3;
 243     case SDLK_4: return KEY_4;
 244     case SDLK_5: return KEY_5;
 245     case SDLK_6: return KEY_6;
 246     case SDLK_7: return KEY_7;
 247     case SDLK_8: return KEY_8;
 248     case SDLK_9: return KEY_9;
 249     case SDLK_a: return KEY_A;
 250     case SDLK_b: return KEY_B;
 251     case SDLK_c: return KEY_C;
 252     case SDLK_d: return KEY_D;
 253     case SDLK_e: return KEY_E;
 254     case SDLK_f: return KEY_F;
 255     case SDLK_g: return KEY_G;
 256     case SDLK_h: return KEY_H;
 257     case SDLK_i: return KEY_I;
 258     case SDLK_j: return KEY_J;
 259     case SDLK_k: return KEY_K;
 260     case SDLK_l: return KEY_L;
 261     case SDLK_m: return KEY_M;
 262     case SDLK_n: return KEY_N;
 263     case SDLK_o: return KEY_O;
 264     case SDLK_p: return KEY_P;
 265     case SDLK_q: return KEY_Q;
 266     case SDLK_r: return KEY_R;
 267     case SDLK_s: return KEY_S;
 268     case SDLK_t: return KEY_T;
 269     case SDLK_u: return KEY_U;
 270     case SDLK_v: return KEY_V;
 271     case SDLK_w: return KEY_W;
 272     case SDLK_x: return KEY_X;
 273     case SDLK_y: return KEY_Y;
 274     case SDLK_z: return KEY_Z;
 275     case SDLK_RETURN: return KEY_RETURN;
 276     case SDLK_ESCAPE: return KEY_ESCAPE;
 277     case SDLK_BACKSPACE: return KEY_BACKSPACE;
 278     case SDLK_TAB: return KEY_TAB;
 279     case SDLK_SPACE: return KEY_SPACE;
 280     case SDLK_MINUS: return KEY_MINUS;
 281     case SDLK_EQUALS: return KEY_EQUALS;
 282     case SDLK_LEFTBRACKET: return KEY_LEFTBRACKET;
 283     case SDLK_RIGHTBRACKET: return KEY_RIGHTBRACKET;
 284     case SDLK_BACKSLASH: return KEY_BACKSLASH;
 285     case SDLK_SEMICOLON: return KEY_SEMICOLON;
 286     case SDLK_QUOTE: return KEY_APOSTROPHE;
 287     case SDLK_BACKQUOTE: return KEY_GRAVE;
 288     case SDLK_COMMA: return KEY_COMMA;
 289     case SDLK_PERIOD: return KEY_PERIOD;
 290     case SDLK_SLASH: return KEY_SLASH;
 291     case SDLK_CAPSLOCK: return KEY_CAPSLOCK;
 292     case SDLK_F1: return KEY_F1;
 293     case SDLK_F2: return KEY_F2;
 294     case SDLK_F3: return KEY_F3;
 295     case SDLK_F4: return KEY_F4;
 296     case SDLK_F5: return KEY_F5;
 297     case SDLK_F6: return KEY_F6;
 298     case SDLK_F7: return KEY_F7;
 299     case SDLK_F8: return KEY_F8;
 300     case SDLK_F9: return KEY_F9;
 301     case SDLK_F10: return KEY_F10;
 302     case SDLK_F11: return KEY_F11;
 303     case SDLK_F12: return KEY_F12;
 304     case SDLK_PRINT: return KEY_PRINTSCREEN;
 305     case SDLK_SCROLLOCK: return KEY_SCROLLLOCK;
 306     case SDLK_PAUSE: return KEY_PAUSE;
 307     case SDLK_INSERT: return KEY_INSERT;
 308     case SDLK_HOME: return KEY_HOME;
 309     case SDLK_PAGEUP: return KEY_PAGEUP;
 310     case SDLK_DELETE: return KEY_DELETE;
 311     case SDLK_END: return KEY_END;
 312     case SDLK_PAGEDOWN: return KEY_PAGEDOWN;
 313     case SDLK_RIGHT: return KEY_RIGHT;
 314     case SDLK_LEFT: return KEY_LEFT;
 315     case SDLK_DOWN: return KEY_DOWN;
 316     case SDLK_UP: return KEY_UP;
 317     case SDLK_NUMLOCK: return KEY_NUMLOCK;
 318     case SDLK_KP_DIVIDE: return KEY_KP_DIVIDE;
 319     case SDLK_KP_MULTIPLY: return KEY_KP_MULTIPLY;
 320     case SDLK_KP_MINUS: return KEY_KP_MINUS;
 321     case SDLK_KP_PLUS: return KEY_KP_PLUS;
 322     case SDLK_KP_ENTER: return KEY_KP_ENTER;
 323     case SDLK_KP0: return KEY_KP_0;
 324     case SDLK_KP1: return KEY_KP_1;
 325     case SDLK_KP2: return KEY_KP_2;
 326     case SDLK_KP3: return KEY_KP_3;
 327     case SDLK_KP4: return KEY_KP_4;
 328     case SDLK_KP5: return KEY_KP_5;
 329     case SDLK_KP6: return KEY_KP_6;
 330     case SDLK_KP7: return KEY_KP_7;
 331     case SDLK_KP8: return KEY_KP_8;
 332     case SDLK_KP9: return KEY_KP_9;
 333     case SDLK_KP_PERIOD: return KEY_KP_PERIOD;
 334     case SDLK_SYSREQ: return KEY_SYSREQ;
 335     case SDLK_LCTRL: return KEY_LCTRL;
 336     case SDLK_LSHIFT: return KEY_LSHIFT;
 337     case SDLK_LALT: return KEY_LALT;
 338     case SDLK_LSUPER: return KEY_LSUPER;
 339     case SDLK_RCTRL: return KEY_RCTRL;
 340     case SDLK_RSHIFT: return KEY_RSHIFT;
 341     case SDLK_RALT: return KEY_RALT;
 342     case SDLK_RSUPER: return KEY_RSUPER;
 343     default: return KEY_UNKNOWN;
 344   }
 345 }
 346
 347 static void poll_events (void (*h)(int key, int down)) {
 348   int key;
 349   SDL_Event ev;
 350   while (SDL_PollEvent(&ev)) {
 351     switch (ev.type) {
 352       case SDL_QUIT:
 353         ERR_quit();
 354         break;
 355       case SDL_VIDEORESIZE:
 356         R_set_videomode(ev.resize.w, ev.resize.h, Y_get_fullscreen());
 357         break;
 358       case SDL_KEYDOWN:
 359       case SDL_KEYUP:
 360         key = sdl_to_key(ev.key.keysym.sym);
 361         I_press(key, ev.type == SDL_KEYDOWN);
 362         if (h != NULL) {
 363           (*h)(key, ev.type == SDL_KEYDOWN);
 364         }
 365         break;
 366     }
 367   }
 368 }
 369
 370 static void step (void) {
 371   poll_events(&G_keyf);
 372   S_updatemusic();
 373   Uint32 t = SDL_GetTicks();
 374   if (t - ticks > DELAY) {
 375     ticks = t;
 376     G_act();
 377   }
 378   R_draw();
 379 }
 380
 381 int main (int argc, char *argv[]) {
 382   char *pw;
 383   logo("main: initialize SDL\n");
 384   if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) == -1) {
 385     logo("main: failed to init SDL: %s\n", SDL_GetError());
 386     return 1;
 387   }
 388   SDL_WM_SetCaption("Doom 2D v1.351", "Doom 2D");
 389   // Player 1 defaults
 390   pl1.ku = KEY_KP_8;
 391   pl1.kd = KEY_KP_5;
 392   pl1.kl = KEY_KP_4;
 393   pl1.kr = KEY_KP_6;
 394   pl1.kf = KEY_PAGEDOWN;
 395   pl1.kj = KEY_DELETE;
 396   pl1.kwl = KEY_HOME;
 397   pl1.kwr = KEY_END;
 398   pl1.kp = KEY_KP_8;
 399   // Player 2 defaults
 400   pl2.ku = KEY_E;
 401   pl2.kd = KEY_D;
 402   pl2.kl = KEY_S;
 403   pl2.kr = KEY_F;
 404   pl2.kf = KEY_A;
 405   pl2.kj = KEY_Q;
 406   pl2.kwl = KEY_1;
 407   pl2.kwr = KEY_2;
 408   pl2.kp = KEY_E;
 409   srand(SDL_GetTicks());
 410   F_startup();
 411 #ifndef WIN32
 412   pw = "/usr/share/doom2d-rembo/doom2d.wad";
 413 #else
 414   pw = "doom2d.wad";
 415 #endif
 416   if (fexists(pw)) {
 417     F_addwad(pw);
 418   } else {
 419     F_addwad("doom2d.wad");
 420   }
 421   CFG_args(argc, argv);
 422   CFG_load();
 423   F_initwads();
 424   M_startup();
 425   F_allocres();
 426   S_init();
 427   S_initmusic();
 428   R_init();
 429   G_init();
 430   ticks = SDL_GetTicks();
 431 #ifdef __EMSCRIPTEN__
 432   emscripten_set_main_loop(step, 0, 1);
 433 #else
 434   while (!quit) {
 435     step();
 436   }
 437 #endif
 438   CFG_save();
 439   R_done();
 440   S_donemusic();
 441   S_done();
 442   M_shutdown();
 443   SDL_Quit();
 444   return 0;
 445 }