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 <ctype.h>
  33 #include <assert.h>
  34 #include "system.h"
  35 #include "input.h"
  36
  37 #include "my.h" // fexists
  38 #include "player.h" // pl1 pl2
  39 #include "menu.h" // G_keyf
  40 #include "error.h" // logo
  41
  42 #include "files.h" // F_startup F_addwad F_initwads F_allocres
  43 #include "config.h" // CFG_args CFG_load CFG_save
  44 #include "memory.h" // M_startup
  45 #include "game.h" // G_init G_act
  46 #include "sound.h" // S_init S_done
  47 #include "music.h" // S_initmusic S_updatemusic S_donemusic
  48 #include "render.h" // R_init R_draw R_done
  49
  50 #define MODE_NONE 0
  51 #define MODE_OPENGL 1
  52 #define MODE_SOFTWARE 2
  53
  54 static Uint32 ticks;
  55 static int quit = 0;
  56 static SDL_Surface *surf = NULL;
  57 static int mode = MODE_NONE;
  58 static int text_input;
  59
  60 /* --- error.h --- */
  61
  62 void logo (const char *s, ...) {
  63   va_list ap;
  64   va_start(ap, s);
  65   vprintf(s, ap);
  66   va_end(ap);
  67   fflush(stdout);
  68 }
  69
  70 void logo_gas (int cur, int all) {
  71   // stub
  72 }
  73
  74 void ERR_failinit (char *s, ...) {
  75   va_list ap;
  76   va_start(ap, s);
  77   vprintf(s, ap);
  78   va_end(ap);
  79   puts("");
  80   exit(1);
  81 }
  82
  83 void ERR_fatal (char *s, ...) {
  84   va_list ap;
  85   R_done();
  86   S_done();
  87   S_donemusic();
  88   M_shutdown();
  89   SDL_Quit();
  90   puts("\nКРИТИЧЕСКАЯ ОШИБКА:");
  91   va_start(ap, s);
  92   vprintf(s, ap);
  93   va_end(ap);
  94   puts("");
  95   exit(1);
  96 }
  97
  98 void ERR_quit (void) {
  99   quit = 1;
 100 }
 101
 102 /* --- system.h --- */
 103
 104 int Y_set_videomode_opengl (int w, int h, int fullscreen) {
 105   assert(w > 0);
 106   assert(h > 0);
 107   Uint32 flags;
 108   SDL_Surface *s;
 109   if (mode == MODE_OPENGL && surf->w == w && surf->h == h && Y_get_fullscreen() == fullscreen) {
 110     s = surf;
 111   } else {
 112     flags = SDL_DOUBLEBUF | SDL_OPENGL;
 113     if (fullscreen) {
 114       flags = flags | SDL_FULLSCREEN;
 115     }
 116 #   ifdef WIN32
 117       flags = flags | SDL_RESIZABLE;
 118 #   endif
 119     s = SDL_SetVideoMode(w, h, 0, flags);
 120     if (s != NULL) {
 121       mode = MODE_OPENGL;
 122       surf = s;
 123     } else {
 124       logo("Y_set_videomode_opengl: error: %s\n", SDL_GetError());
 125     }
 126   }
 127   return s != NULL;
 128 }
 129
 130 int Y_set_videomode_software (int w, int h, int fullscreen) {
 131   assert(w > 0);
 132   assert(h > 0);
 133   Uint32 flags;
 134   SDL_Surface *s;
 135   if (mode == MODE_OPENGL && surf->w == w && surf->h == h && Y_get_fullscreen() == fullscreen) {
 136     s = surf;
 137   } else {
 138     flags = SDL_DOUBLEBUF | SDL_SWSURFACE | SDL_HWPALETTE;
 139     if (fullscreen) {
 140       flags = flags | SDL_FULLSCREEN;
 141     }
 142 #   ifdef WIN32
 143       flags = flags | SDL_RESIZABLE;
 144 #   endif
 145     s = SDL_SetVideoMode(w, h, 8, flags);
 146     if (s != NULL) {
 147       mode = MODE_SOFTWARE;
 148       surf = s;
 149     }
 150   }
 151   return s != NULL;
 152 }
 153
 154 void Y_get_videomode (int *w, int *h) {
 155   if (mode != MODE_NONE) {
 156     *w = surf->w;
 157     *h = surf->h;
 158   } else {
 159     *w = 0;
 160     *h = 0;
 161   }
 162 }
 163
 164 int Y_videomode_setted (void) {
 165   return mode != MODE_NONE;
 166 }
 167
 168 void Y_unset_videomode (void) {
 169   surf = NULL;
 170   mode = MODE_NONE;
 171 #ifndef __EMSCRIPTEN__
 172   SDL_QuitSubSystem(SDL_INIT_VIDEO);
 173   SDL_InitSubSystem(SDL_INIT_VIDEO);
 174 #endif
 175 }
 176
 177 void Y_set_fullscreen (int fullscreen) {
 178   int fs = Y_get_fullscreen();
 179   if (mode != MODE_NONE && fs != fullscreen) {
 180     if (SDL_WM_ToggleFullScreen(surf) == 0) {
 181       switch (mode) {
 182         case MODE_OPENGL:
 183           Y_set_videomode_opengl(surf->w, surf->h, fullscreen);
 184           break;
 185         case MODE_SOFTWARE:
 186           Y_set_videomode_software(surf->w, surf->h, fullscreen);
 187           break;
 188       }
 189     }
 190   }
 191 }
 192
 193 int Y_get_fullscreen (void) {
 194   return (mode != MODE_NONE) && ((surf->flags & SDL_FULLSCREEN) != 0);
 195 }
 196
 197 void Y_swap_buffers (void) {
 198   assert(mode == MODE_OPENGL);
 199   SDL_GL_SwapBuffers();
 200 }
 201
 202 void Y_get_buffer (byte **buf, int *w, int *h, int *pitch) {
 203   assert(mode == MODE_SOFTWARE);
 204   *buf = surf->pixels;
 205   *w = surf->w;
 206   *h = surf->h;
 207   *pitch = surf->pitch;
 208 }
 209
 210 void Y_set_vga_palette (byte *vgapal) {
 211   int i;
 212   byte *p = vgapal;
 213   assert(vgapal != NULL);
 214   assert(mode == MODE_SOFTWARE);
 215   SDL_Color colors[256];
 216   for (i = 0; i < 256; i++) {
 217     colors[i] = (SDL_Color) {
 218       .r = p[0] * 255 / 63,
 219       .g = p[1] * 255 / 63,
 220       .b = p[2] * 255 / 63
 221     };
 222     p += 3;
 223   }
 224   SDL_SetColors(surf, colors, 0, 256);
 225 }
 226
 227 void Y_repaint_rect (int x, int y, int w, int h) {
 228   assert(mode == MODE_SOFTWARE);
 229   SDL_UpdateRect(surf, x, y, w, h);
 230 }
 231
 232 void Y_repaint (void) {
 233   assert(mode == MODE_SOFTWARE);
 234   SDL_Flip(surf);
 235 }
 236
 237 void Y_enable_text_input (void) {
 238   text_input = 1;
 239 }
 240
 241 void Y_disable_text_input (void) {
 242   text_input = 0;
 243 }
 244
 245 /* --- main --- */
 246
 247 static int sdl_to_key (int code) {
 248   switch (code) {
 249     case SDLK_0: return KEY_0;
 250     case SDLK_1: return KEY_1;
 251     case SDLK_2: return KEY_2;
 252     case SDLK_3: return KEY_3;
 253     case SDLK_4: return KEY_4;
 254     case SDLK_5: return KEY_5;
 255     case SDLK_6: return KEY_6;
 256     case SDLK_7: return KEY_7;
 257     case SDLK_8: return KEY_8;
 258     case SDLK_9: return KEY_9;
 259     case SDLK_a: return KEY_A;
 260     case SDLK_b: return KEY_B;
 261     case SDLK_c: return KEY_C;
 262     case SDLK_d: return KEY_D;
 263     case SDLK_e: return KEY_E;
 264     case SDLK_f: return KEY_F;
 265     case SDLK_g: return KEY_G;
 266     case SDLK_h: return KEY_H;
 267     case SDLK_i: return KEY_I;
 268     case SDLK_j: return KEY_J;
 269     case SDLK_k: return KEY_K;
 270     case SDLK_l: return KEY_L;
 271     case SDLK_m: return KEY_M;
 272     case SDLK_n: return KEY_N;
 273     case SDLK_o: return KEY_O;
 274     case SDLK_p: return KEY_P;
 275     case SDLK_q: return KEY_Q;
 276     case SDLK_r: return KEY_R;
 277     case SDLK_s: return KEY_S;
 278     case SDLK_t: return KEY_T;
 279     case SDLK_u: return KEY_U;
 280     case SDLK_v: return KEY_V;
 281     case SDLK_w: return KEY_W;
 282     case SDLK_x: return KEY_X;
 283     case SDLK_y: return KEY_Y;
 284     case SDLK_z: return KEY_Z;
 285     case SDLK_RETURN: return KEY_RETURN;
 286     case SDLK_ESCAPE: return KEY_ESCAPE;
 287     case SDLK_BACKSPACE: return KEY_BACKSPACE;
 288     case SDLK_TAB: return KEY_TAB;
 289     case SDLK_SPACE: return KEY_SPACE;
 290     case SDLK_MINUS: return KEY_MINUS;
 291     case SDLK_EQUALS: return KEY_EQUALS;
 292     case SDLK_LEFTBRACKET: return KEY_LEFTBRACKET;
 293     case SDLK_RIGHTBRACKET: return KEY_RIGHTBRACKET;
 294     case SDLK_BACKSLASH: return KEY_BACKSLASH;
 295     case SDLK_SEMICOLON: return KEY_SEMICOLON;
 296     case SDLK_QUOTE: return KEY_APOSTROPHE;
 297     case SDLK_BACKQUOTE: return KEY_GRAVE;
 298     case SDLK_COMMA: return KEY_COMMA;
 299     case SDLK_PERIOD: return KEY_PERIOD;
 300     case SDLK_SLASH: return KEY_SLASH;
 301     case SDLK_CAPSLOCK: return KEY_CAPSLOCK;
 302     case SDLK_F1: return KEY_F1;
 303     case SDLK_F2: return KEY_F2;
 304     case SDLK_F3: return KEY_F3;
 305     case SDLK_F4: return KEY_F4;
 306     case SDLK_F5: return KEY_F5;
 307     case SDLK_F6: return KEY_F6;
 308     case SDLK_F7: return KEY_F7;
 309     case SDLK_F8: return KEY_F8;
 310     case SDLK_F9: return KEY_F9;
 311     case SDLK_F10: return KEY_F10;
 312     case SDLK_F11: return KEY_F11;
 313     case SDLK_F12: return KEY_F12;
 314     case SDLK_PRINT: return KEY_PRINTSCREEN;
 315     case SDLK_SCROLLOCK: return KEY_SCROLLLOCK;
 316     case SDLK_PAUSE: return KEY_PAUSE;
 317     case SDLK_INSERT: return KEY_INSERT;
 318     case SDLK_HOME: return KEY_HOME;
 319     case SDLK_PAGEUP: return KEY_PAGEUP;
 320     case SDLK_DELETE: return KEY_DELETE;
 321     case SDLK_END: return KEY_END;
 322     case SDLK_PAGEDOWN: return KEY_PAGEDOWN;
 323     case SDLK_RIGHT: return KEY_RIGHT;
 324     case SDLK_LEFT: return KEY_LEFT;
 325     case SDLK_DOWN: return KEY_DOWN;
 326     case SDLK_UP: return KEY_UP;
 327     case SDLK_NUMLOCK: return KEY_NUMLOCK;
 328     case SDLK_KP_DIVIDE: return KEY_KP_DIVIDE;
 329     case SDLK_KP_MULTIPLY: return KEY_KP_MULTIPLY;
 330     case SDLK_KP_MINUS: return KEY_KP_MINUS;
 331     case SDLK_KP_PLUS: return KEY_KP_PLUS;
 332     case SDLK_KP_ENTER: return KEY_KP_ENTER;
 333     case SDLK_KP0: return KEY_KP_0;
 334     case SDLK_KP1: return KEY_KP_1;
 335     case SDLK_KP2: return KEY_KP_2;
 336     case SDLK_KP3: return KEY_KP_3;
 337     case SDLK_KP4: return KEY_KP_4;
 338     case SDLK_KP5: return KEY_KP_5;
 339     case SDLK_KP6: return KEY_KP_6;
 340     case SDLK_KP7: return KEY_KP_7;
 341     case SDLK_KP8: return KEY_KP_8;
 342     case SDLK_KP9: return KEY_KP_9;
 343     case SDLK_KP_PERIOD: return KEY_KP_PERIOD;
 344     case SDLK_SYSREQ: return KEY_SYSREQ;
 345     case SDLK_LCTRL: return KEY_LCTRL;
 346     case SDLK_LSHIFT: return KEY_LSHIFT;
 347     case SDLK_LALT: return KEY_LALT;
 348     case SDLK_LSUPER: return KEY_LSUPER;
 349     case SDLK_RCTRL: return KEY_RCTRL;
 350     case SDLK_RSHIFT: return KEY_RSHIFT;
 351     case SDLK_RALT: return KEY_RALT;
 352     case SDLK_RSUPER: return KEY_RSUPER;
 353     default: return KEY_UNKNOWN;
 354   }
 355 }
 356
 357 static void poll_events (void) {
 358   int key, sym, down;
 359   SDL_Event ev;
 360   while (SDL_PollEvent(&ev)) {
 361     switch (ev.type) {
 362       case SDL_QUIT:
 363         ERR_quit();
 364         break;
 365       case SDL_VIDEORESIZE:
 366         R_set_videomode(ev.resize.w, ev.resize.h, Y_get_fullscreen());
 367         break;
 368       case SDL_KEYDOWN:
 369       case SDL_KEYUP:
 370         sym = ev.key.keysym.sym;
 371         down = ev.type == SDL_KEYDOWN;
 372         key = sdl_to_key(sym);
 373         I_press(key, down);
 374         GM_key(key, down);
 375         if (down && text_input && sym >= 0x20 && sym <= 0x7e) {
 376           // TODO fix this
 377           GM_input(sym);
 378         }
 379         break;
 380     }
 381   }
 382 }
 383
 384 static void step (void) {
 385   poll_events();
 386   S_updatemusic();
 387   Uint32 t = SDL_GetTicks();
 388   if (t - ticks > DELAY) {
 389     ticks = t;
 390     G_act();
 391   }
 392   R_draw();
 393 }
 394
 395 int main (int argc, char *argv[]) {
 396   char *pw;
 397   logo("main: initialize SDL\n");
 398   if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) == -1) {
 399     logo("main: failed to init SDL: %s\n", SDL_GetError());
 400     return 1;
 401   }
 402   SDL_WM_SetCaption("Doom 2D (SDL)", "Doom 2D");
 403   // Player 1 defaults
 404   pl1.ku = KEY_KP_8;
 405   pl1.kd = KEY_KP_5;
 406   pl1.kl = KEY_KP_4;
 407   pl1.kr = KEY_KP_6;
 408   pl1.kf = KEY_PAGEDOWN;
 409   pl1.kj = KEY_DELETE;
 410   pl1.kwl = KEY_HOME;
 411   pl1.kwr = KEY_END;
 412   pl1.kp = KEY_KP_8;
 413   // Player 2 defaults
 414   pl2.ku = KEY_E;
 415   pl2.kd = KEY_D;
 416   pl2.kl = KEY_S;
 417   pl2.kr = KEY_F;
 418   pl2.kf = KEY_A;
 419   pl2.kj = KEY_Q;
 420   pl2.kwl = KEY_1;
 421   pl2.kwr = KEY_2;
 422   pl2.kp = KEY_E;
 423   srand(SDL_GetTicks());
 424   F_startup();
 425 #ifndef WIN32
 426   pw = "/usr/share/doom2d-rembo/doom2d.wad";
 427 #else
 428   pw = "doom2d.wad";
 429 #endif
 430   if (fexists(pw)) {
 431     F_addwad(pw);
 432   } else {
 433     F_addwad("doom2d.wad");
 434   }
 435   CFG_args(argc, argv);
 436   CFG_load();
 437   F_initwads();
 438   M_startup();
 439   F_allocres();
 440   S_init();
 441   S_initmusic();
 442   R_init();
 443   G_init();
 444   ticks = SDL_GetTicks();
 445 #ifdef __EMSCRIPTEN__
 446   emscripten_set_main_loop(step, 0, 1);
 447 #else
 448   while (!quit) {
 449     step();
 450   }
 451 #endif
 452   CFG_save();
 453   R_done();
 454   S_donemusic();
 455   S_done();
 456   M_shutdown();
 457   SDL_Quit();
 458   return 0;
 459 }