src/sdl2/main.c

   1 #include "SDL.h"
   2 #include <stdio.h>
   3 #include <stdarg.h>
   4 #include <stdlib.h> // srand exit
   5 #include <string.h> // strcasecmp
   6 #include <assert.h>
   7 #include "system.h"
   8 #include "input.h"
   9
  10 #include "my.h" // fexists
  11 #include "player.h" // pl1 pl2
  12 #include "menu.h" // G_keyf
  13 #include "error.h" // logo
  14
  15 #include "files.h" // F_startup F_addwad F_initwads F_allocres
  16 #include "config.h" // CFG_args CFG_load CFG_save
  17 #include "memory.h" // M_startup
  18 #include "game.h" // G_init G_act
  19 #include "sound.h" // S_init S_done
  20 #include "music.h" // S_initmusic S_updatemusic S_donemusic
  21 #include "render.h" // R_init R_draw R_done
  22
  23 #define TITLE_STR "DooM 2D (SDL2)"
  24
  25 static int quit = 0;
  26 static SDL_Window *window;
  27 static SDL_GLContext context;
  28 static SDL_Surface *surf;
  29
  30 /* --- error.h --- */
  31
  32 void logo (const char *s, ...) {
  33   va_list ap;
  34   va_start(ap, s);
  35   vprintf(s, ap);
  36   va_end(ap);
  37   fflush(stdout);
  38 }
  39
  40 void logo_gas (int cur, int all) {
  41   // stub
  42 }
  43
  44 void ERR_failinit (char *s, ...) {
  45   va_list ap;
  46   va_start(ap, s);
  47   vprintf(s, ap);
  48   va_end(ap);
  49   puts("");
  50   exit(1);
  51 }
  52
  53 void ERR_fatal (char *s, ...) {
  54   va_list ap;
  55   R_done();
  56   S_done();
  57   S_donemusic();
  58   M_shutdown();
  59   SDL_Quit();
  60   puts("\nКРИТИЧЕСКАЯ ОШИБКА:");
  61   va_start(ap, s);
  62   vprintf(s, ap);
  63   va_end(ap);
  64   puts("");
  65   exit(1);
  66 }
  67
  68 void ERR_quit (void) {
  69   quit = 1;
  70 }
  71
  72 /* --- system.h --- */
  73
  74 static int Y_resize_window (int w, int h, int fullscreen) {
  75   assert(w > 0);
  76   assert(h > 0);
  77   assert(window != NULL);
  78   if (surf != NULL) {
  79     if (surf->w != w || surf->h != h) {
  80       SDL_Surface *s = SDL_CreateRGBSurface(0, w, h, 8, 0, 0, 0, 0);
  81       if (s != NULL) {
  82         SDL_SetPaletteColors(s->format->palette, surf->format->palette->colors, 0, surf->format->palette->ncolors);
  83         SDL_FreeSurface(surf);
  84         surf = s;
  85       }
  86     }
  87   }
  88   SDL_SetWindowSize(window, w, h);
  89   Y_set_fullscreen(fullscreen);
  90   return 1;
  91 }
  92
  93 int Y_set_videomode_opengl (int w, int h, int fullscreen) {
  94   assert(w > 0);
  95   assert(h > 0);
  96   Uint32 flags;
  97   SDL_Window *win;
  98   SDL_GLContext ctx;
  99   if (window != NULL && context != NULL) {
 100     Y_resize_window(w, h, fullscreen);
 101     win = window;
 102   } else {
 103     flags = SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL;
 104     if (fullscreen) {
 105       flags = flags | SDL_WINDOW_FULLSCREEN;
 106     }
 107     // TODO set context version and type
 108     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 1);
 109     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
 110     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 111     win = SDL_CreateWindow(TITLE_STR, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, w, h, flags);
 112     if (win != NULL) {
 113       ctx = SDL_GL_CreateContext(win);
 114       if (ctx != NULL) {
 115         Y_unset_videomode();
 116         window = win;
 117         context = ctx;
 118         SDL_GL_MakeCurrent(window, context);
 119       } else {
 120         SDL_DestroyWindow(win);
 121         win = NULL;
 122       }
 123     }
 124   }
 125   return win != 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   SDL_Window *win;
 134   if (window != NULL && surf != NULL) {
 135     Y_resize_window(w, h, fullscreen);
 136     win = window;
 137   } else {
 138     flags = SDL_WINDOW_RESIZABLE;
 139     if (fullscreen) {
 140       flags = flags | SDL_WINDOW_FULLSCREEN;
 141     }
 142     win = SDL_CreateWindow(TITLE_STR, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, w, h, flags);
 143     if (win != NULL) {
 144       s = SDL_CreateRGBSurface(0, w, h, 8, 0, 0, 0, 0);
 145       if (s != NULL) {
 146         Y_unset_videomode();
 147         window = win;
 148         surf = s;
 149       } else {
 150         SDL_DestroyWindow(win);
 151         win = NULL;
 152       }
 153     }
 154   }
 155   return win != NULL;
 156 }
 157
 158 void Y_get_videomode (int *w, int *h) {
 159   if (window != NULL) {
 160     SDL_GetWindowSize(window, w, h);
 161   } else {
 162     *w = 0;
 163     *h = 0;
 164   }
 165 }
 166
 167 int Y_videomode_setted (void) {
 168   return window != NULL;
 169 }
 170
 171 void Y_unset_videomode (void) {
 172   if (window != NULL) {
 173     if (context != NULL) {
 174       SDL_GL_MakeCurrent(window, NULL);
 175       SDL_GL_DeleteContext(context);
 176       context = NULL;
 177     }
 178     if (surf != NULL) {
 179       SDL_FreeSurface(surf);
 180       surf = NULL;
 181     }
 182     SDL_DestroyWindow(window);
 183     window = NULL;
 184   }
 185 }
 186
 187 void Y_set_fullscreen (int yes) {
 188   if (window != NULL) {
 189     SDL_SetWindowFullscreen(window, yes ? SDL_WINDOW_FULLSCREEN : 0);
 190   }
 191 }
 192
 193 int Y_get_fullscreen (void) {
 194   return (window != NULL) && (SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN);
 195 }
 196
 197 void Y_swap_buffers (void) {
 198   assert(window != NULL);
 199   assert(context != NULL);
 200   SDL_GL_SwapWindow(window);
 201 }
 202
 203 void Y_get_buffer (byte **buf, int *w, int *h, int *pitch) {
 204   assert(window != NULL);
 205   assert(surf != NULL);
 206   *buf = surf->pixels;
 207   *w = surf->w;
 208   *h = surf->h;
 209   *pitch = surf->pitch;
 210 }
 211
 212 void Y_set_vga_palette (byte *vgapal) {
 213   assert(window != NULL);
 214   assert(surf != NULL);
 215   int i;
 216   byte *p = vgapal;
 217   SDL_Color colors[256];
 218   for (i = 0; i < 256; i++) {
 219     colors[i] = (SDL_Color) {
 220       .r = p[0] * 255 / 63,
 221       .g = p[1] * 255 / 63,
 222       .b = p[2] * 255 / 63
 223     };
 224     p += 3;
 225   }
 226   SDL_SetPaletteColors(surf->format->palette, colors, 0, 256);
 227 }
 228
 229 void Y_repaint_rect (int x, int y, int w, int h) {
 230   assert(window != NULL);
 231   assert(surf != NULL);
 232   SDL_Surface *s = SDL_GetWindowSurface(window);
 233   SDL_Rect r = (SDL_Rect) {
 234     .x = x,
 235     .y = y,
 236     .w = w,
 237     .h = h
 238   };
 239   SDL_BlitSurface(surf, &r, s, &r);
 240   SDL_UpdateWindowSurfaceRects(window, &r, 1);
 241 }
 242
 243 void Y_repaint (void) {
 244   Y_repaint_rect(0, 0, surf->w, surf->h);
 245 }
 246
 247 /* --- main --- */
 248
 249 static int sdl_to_key (int code) {
 250   switch (code) {
 251     case SDL_SCANCODE_0: return KEY_0;
 252     case SDL_SCANCODE_1: return KEY_1;
 253     case SDL_SCANCODE_2: return KEY_2;
 254     case SDL_SCANCODE_3: return KEY_3;
 255     case SDL_SCANCODE_4: return KEY_4;
 256     case SDL_SCANCODE_5: return KEY_5;
 257     case SDL_SCANCODE_6: return KEY_6;
 258     case SDL_SCANCODE_7: return KEY_7;
 259     case SDL_SCANCODE_8: return KEY_8;
 260     case SDL_SCANCODE_9: return KEY_9;
 261     case SDL_SCANCODE_A: return KEY_A;
 262     case SDL_SCANCODE_B: return KEY_B;
 263     case SDL_SCANCODE_C: return KEY_C;
 264     case SDL_SCANCODE_D: return KEY_D;
 265     case SDL_SCANCODE_E: return KEY_E;
 266     case SDL_SCANCODE_F: return KEY_F;
 267     case SDL_SCANCODE_G: return KEY_G;
 268     case SDL_SCANCODE_H: return KEY_H;
 269     case SDL_SCANCODE_I: return KEY_I;
 270     case SDL_SCANCODE_J: return KEY_J;
 271     case SDL_SCANCODE_K: return KEY_K;
 272     case SDL_SCANCODE_L: return KEY_L;
 273     case SDL_SCANCODE_M: return KEY_M;
 274     case SDL_SCANCODE_N: return KEY_N;
 275     case SDL_SCANCODE_O: return KEY_O;
 276     case SDL_SCANCODE_P: return KEY_P;
 277     case SDL_SCANCODE_Q: return KEY_Q;
 278     case SDL_SCANCODE_R: return KEY_R;
 279     case SDL_SCANCODE_S: return KEY_S;
 280     case SDL_SCANCODE_T: return KEY_T;
 281     case SDL_SCANCODE_U: return KEY_U;
 282     case SDL_SCANCODE_V: return KEY_V;
 283     case SDL_SCANCODE_W: return KEY_W;
 284     case SDL_SCANCODE_X: return KEY_X;
 285     case SDL_SCANCODE_Y: return KEY_Y;
 286     case SDL_SCANCODE_Z: return KEY_Z;
 287     case SDL_SCANCODE_RETURN: return KEY_RETURN;
 288     case SDL_SCANCODE_ESCAPE: return KEY_ESCAPE;
 289     case SDL_SCANCODE_BACKSPACE: return KEY_BACKSPACE;
 290     case SDL_SCANCODE_TAB: return KEY_TAB;
 291     case SDL_SCANCODE_SPACE: return KEY_SPACE;
 292     case SDL_SCANCODE_MINUS: return KEY_MINUS;
 293     case SDL_SCANCODE_EQUALS: return KEY_EQUALS;
 294     case SDL_SCANCODE_LEFTBRACKET: return KEY_LEFTBRACKET;
 295     case SDL_SCANCODE_RIGHTBRACKET: return KEY_RIGHTBRACKET;
 296     case SDL_SCANCODE_BACKSLASH: return KEY_BACKSLASH;
 297     case SDL_SCANCODE_SEMICOLON: return KEY_SEMICOLON;
 298     case SDL_SCANCODE_APOSTROPHE: return KEY_APOSTROPHE;
 299     case SDL_SCANCODE_GRAVE: return KEY_GRAVE;
 300     case SDL_SCANCODE_COMMA: return KEY_COMMA;
 301     case SDL_SCANCODE_PERIOD: return KEY_PERIOD;
 302     case SDL_SCANCODE_SLASH: return KEY_SLASH;
 303     case SDL_SCANCODE_CAPSLOCK: return KEY_CAPSLOCK;
 304     case SDL_SCANCODE_F1: return KEY_F1;
 305     case SDL_SCANCODE_F2: return KEY_F2;
 306     case SDL_SCANCODE_F3: return KEY_F3;
 307     case SDL_SCANCODE_F4: return KEY_F4;
 308     case SDL_SCANCODE_F5: return KEY_F5;
 309     case SDL_SCANCODE_F6: return KEY_F6;
 310     case SDL_SCANCODE_F7: return KEY_F7;
 311     case SDL_SCANCODE_F8: return KEY_F8;
 312     case SDL_SCANCODE_F9: return KEY_F9;
 313     case SDL_SCANCODE_F10: return KEY_F10;
 314     case SDL_SCANCODE_F11: return KEY_F11;
 315     case SDL_SCANCODE_F12: return KEY_F12;
 316     case SDL_SCANCODE_PRINTSCREEN: return KEY_PRINTSCREEN;
 317     case SDL_SCANCODE_SCROLLLOCK: return KEY_SCROLLLOCK;
 318     case SDL_SCANCODE_PAUSE: return KEY_PAUSE;
 319     case SDL_SCANCODE_INSERT: return KEY_INSERT;
 320     case SDL_SCANCODE_HOME: return KEY_HOME;
 321     case SDL_SCANCODE_PAGEUP: return KEY_PAGEUP;
 322     case SDL_SCANCODE_DELETE: return KEY_DELETE;
 323     case SDL_SCANCODE_END: return KEY_END;
 324     case SDL_SCANCODE_PAGEDOWN: return KEY_PAGEDOWN;
 325     case SDL_SCANCODE_RIGHT: return KEY_RIGHT;
 326     case SDL_SCANCODE_LEFT: return KEY_LEFT;
 327     case SDL_SCANCODE_DOWN: return KEY_DOWN;
 328     case SDL_SCANCODE_UP: return KEY_UP;
 329     case SDL_SCANCODE_NUMLOCKCLEAR: return KEY_NUMLOCK;
 330     case SDL_SCANCODE_KP_DIVIDE: return KEY_KP_DIVIDE;
 331     case SDL_SCANCODE_KP_MULTIPLY: return KEY_KP_MULTIPLY;
 332     case SDL_SCANCODE_KP_MINUS: return KEY_KP_MINUS;
 333     case SDL_SCANCODE_KP_PLUS: return KEY_KP_PLUS;
 334     case SDL_SCANCODE_KP_ENTER: return KEY_KP_ENTER;
 335     case SDL_SCANCODE_KP_0: return KEY_KP_0;
 336     case SDL_SCANCODE_KP_1: return KEY_KP_1;
 337     case SDL_SCANCODE_KP_2: return KEY_KP_2;
 338     case SDL_SCANCODE_KP_3: return KEY_KP_3;
 339     case SDL_SCANCODE_KP_4: return KEY_KP_4;
 340     case SDL_SCANCODE_KP_5: return KEY_KP_5;
 341     case SDL_SCANCODE_KP_6: return KEY_KP_6;
 342     case SDL_SCANCODE_KP_7: return KEY_KP_7;
 343     case SDL_SCANCODE_KP_8: return KEY_KP_8;
 344     case SDL_SCANCODE_KP_9: return KEY_KP_9;
 345     case SDL_SCANCODE_KP_PERIOD: return KEY_KP_PERIOD;
 346     case SDL_SCANCODE_SYSREQ: return KEY_SYSREQ;
 347     case SDL_SCANCODE_LCTRL: return KEY_LCTRL;
 348     case SDL_SCANCODE_LSHIFT: return KEY_LSHIFT;
 349     case SDL_SCANCODE_LALT: return KEY_LALT;
 350     case SDL_SCANCODE_LGUI: return KEY_LSUPER;
 351     case SDL_SCANCODE_RCTRL: return KEY_RCTRL;
 352     case SDL_SCANCODE_RSHIFT: return KEY_RSHIFT;
 353     case SDL_SCANCODE_RALT: return KEY_RALT;
 354     case SDL_SCANCODE_RGUI: return KEY_RSUPER;
 355     default: return KEY_UNKNOWN;
 356   }
 357 }
 358
 359 static void window_event_handler (SDL_WindowEvent *ev) {
 360   switch (ev->event) {
 361     case SDL_WINDOWEVENT_RESIZED:
 362       R_set_videomode(ev->data1, ev->data2, Y_get_fullscreen());
 363       break;
 364     case SDL_WINDOWEVENT_CLOSE:
 365       ERR_quit();
 366       break;
 367   }
 368 }
 369
 370 static void poll_events (void (*h)(int key, int down)) {
 371   int key;
 372   SDL_Event ev;
 373   while (SDL_PollEvent(&ev)) {
 374     switch (ev.type) {
 375       case SDL_QUIT:
 376         ERR_quit();
 377         break;
 378       case SDL_WINDOWEVENT:
 379         if (ev.window.windowID == SDL_GetWindowID(window)) {
 380           window_event_handler(&ev.window);
 381         }
 382         break;
 383       case SDL_KEYDOWN:
 384       case SDL_KEYUP:
 385         key = sdl_to_key(ev.key.keysym.scancode);
 386         I_press(key, ev.type == SDL_KEYDOWN);
 387         if (h != NULL) {
 388           (*h)(key, ev.type == SDL_KEYDOWN);
 389         }
 390         break;
 391     }
 392   }
 393 }
 394
 395 int main (int argc, char **argv) {
 396   char *pw;
 397   Uint32 t, ticks;
 398   logo("system: initialize SDL2\n");
 399   if (SDL_Init(SDL_INIT_TIMER | SDL_INIT_VIDEO | SDL_INIT_EVENTS) == -1) {
 400     logo("system: failed to init SDL2: %s\n", SDL_GetError());
 401     return 1;
 402   }
 403   //SDL_WM_SetCaption("Doom 2D v1.351", "Doom 2D");
 404   // Player 1 defaults
 405   pl1.ku = KEY_KP_8;
 406   pl1.kd = KEY_KP_5;
 407   pl1.kl = KEY_KP_4;
 408   pl1.kr = KEY_KP_6;
 409   pl1.kf = KEY_PAGEDOWN;
 410   pl1.kj = KEY_DELETE;
 411   pl1.kwl = KEY_HOME;
 412   pl1.kwr = KEY_END;
 413   pl1.kp = KEY_KP_8;
 414   // Player 2 defaults
 415   pl2.ku = KEY_E;
 416   pl2.kd = KEY_D;
 417   pl2.kl = KEY_S;
 418   pl2.kr = KEY_F;
 419   pl2.kf = KEY_A;
 420   pl2.kj = KEY_Q;
 421   pl2.kwl = KEY_1;
 422   pl2.kwr = KEY_2;
 423   pl2.kp = KEY_E;
 424   srand(SDL_GetTicks());
 425   F_startup();
 426 #ifndef WIN32
 427   pw = "/usr/share/doom2d-rembo/doom2d.wad";
 428 #else
 429   pw = "doom2d.wad";
 430 #endif
 431   if (fexists(pw)) {
 432     F_addwad(pw);
 433   } else {
 434     F_addwad("doom2d.wad");
 435   }
 436   CFG_args(argc, argv);
 437   CFG_load();
 438   F_initwads();
 439   M_startup();
 440   F_allocres();
 441   S_init();
 442   S_initmusic();
 443   R_init();
 444   G_init();
 445   ticks = SDL_GetTicks();
 446   while (!quit) {
 447     poll_events(&G_keyf);
 448     S_updatemusic();
 449     t = SDL_GetTicks();
 450     if (t - ticks > DELAY) {
 451       ticks = t;
 452       G_act();
 453     }
 454     R_draw();
 455   }
 456   CFG_save();
 457   R_done();
 458   S_donemusic();
 459   S_done();
 460   M_shutdown();
 461   SDL_Quit();
 462   return 0;
 463 }