src/game/g_window.pas

   1 (* Copyright (C)  Doom 2D: Forever Developers
   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, either version 3 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *)
  16 {$INCLUDE ../shared/a_modes.inc}
  17 unit g_window;
  18
  19 interface
  20
  21 uses
  22   utils;
  23
  24 function SDLMain (): Integer;
  25 function GetTimer (): Int64;
  26 procedure ResetTimer ();
  27 procedure PushExitEvent ();
  28 function ProcessMessage (): Boolean;
  29 procedure ReDrawWindow ();
  30 procedure SwapBuffers ();
  31 procedure Sleep (ms: LongWord);
  32 function GetDisplayModes (dbpp: LongWord; var selres: LongWord): SSArray;
  33 function g_Window_SetDisplay (preserveGL: Boolean=false): Boolean;
  34 function g_Window_SetSize (w, h: Word; fullscreen: Boolean): Boolean;
  35 procedure g_SetVSync (vsync: Boolean);
  36
  37 procedure ProcessLoading (forceUpdate: Boolean=false);
  38
  39 // returns `true` if quit event was received
  40 function g_ProcessMessages (): Boolean;
  41
  42
  43 var
  44   gwin_dump_extensions: Boolean = false;
  45   gwin_has_stencil: Boolean = false;
  46   gwin_k8_enable_light_experiments: Boolean = false;
  47   g_dbg_aimline_on: Boolean = false;
  48
  49
  50 implementation
  51
  52 uses
  53 {$IFDEF WINDOWS}Windows,{$ENDIF}
  54 {$INCLUDE ../nogl/noGLuses.inc}
  55 {$IFDEF ENABLE_HOLMES}
  56   g_holmes, sdlcarcass, fui_ctls,
  57 {$ENDIF}
  58   SysUtils, Classes, MAPDEF,
  59   SDL2, e_graphics, e_log, e_texture, g_main,
  60   g_console, e_input, g_options, g_game,
  61   g_basic, g_textures, e_sound, g_sound, g_menu, ENet, g_net,
  62   g_map, g_gfx, g_monsters, xprofiler,
  63   g_touch;
  64
  65
  66 const
  67   ProgressUpdateMSecs = 1;//100;
  68
  69 var
  70   h_Wnd: PSDL_Window = nil;
  71   h_GL: TSDL_GLContext = nil;
  72   Time, Time_Delta, Time_Old: Int64;
  73   flag: Boolean;
  74 {$IF not DEFINED(HEADLESS)}
  75   wTitle: PChar = nil;
  76   wasFullscreen: Boolean = true; // so we need to recreate the window
  77 {$ENDIF}
  78   wNeedTimeReset: Boolean = false;
  79   wMinimized: Boolean = false;
  80   wMaximized: Boolean = false;
  81   wLoadingProgress: Boolean = false;
  82   wLoadingQuit: Boolean = false;
  83 {$IFNDEF WINDOWS}
  84   ticksOverflow: Int64 = -1;
  85   lastTicks: Uint32 = 0; // to detect overflow
  86 {$ENDIF}
  87
  88
  89 procedure KillGLWindow (preserveGL: Boolean);
  90 begin
  91 {$IFDEF ENABLE_HOLMES}
  92   if (h_GL <> nil) and (not preserveGL) then begin if (assigned(oglDeinitCB)) then oglDeinitCB(); end;
  93 {$ENDIF}
  94   if (h_Wnd <> nil) then SDL_DestroyWindow(h_Wnd);
  95   if (h_GL <> nil) and (not preserveGL) then
  96   begin
  97
  98 {$IFDEF USE_NANOGL}
  99     nanoGL_Destroy;
 100 {$ENDIF}
 101
 102 {$IFDEF USE_NOGL}
 103     nogl_Quit;
 104 {$ENDIF}
 105
 106     SDL_GL_DeleteContext(h_GL);
 107   end;
 108   h_Wnd := nil;
 109   if (not preserveGL) then h_GL := nil;
 110 end;
 111
 112
 113 function g_Window_SetDisplay (preserveGL: Boolean = false): Boolean;
 114 {$IF not DEFINED(HEADLESS)}
 115 var
 116   mode, cmode: TSDL_DisplayMode;
 117   wFlags: LongWord = 0;
 118   nw, nh: Integer;
 119 {$ENDIF}
 120 begin
 121 {$IF not DEFINED(HEADLESS)}
 122   result := false;
 123
 124   e_WriteLog('Setting display mode...', TMsgType.Notify);
 125
 126   wFlags := SDL_WINDOW_OPENGL {or SDL_WINDOW_RESIZABLE};
 127   if gFullscreen then wFlags := wFlags {or SDL_WINDOW_FULLSCREEN} else wFlags := wFlags or SDL_WINDOW_RESIZABLE;
 128   if (not gFullscreen) and (not preserveGL) and gWinMaximized then wFlags := wFlags or SDL_WINDOW_MAXIMIZED else gWinMaximized := false;
 129
 130   if gFullscreen then
 131   begin
 132     mode.w := gScreenWidth;
 133     mode.h := gScreenHeight;
 134     mode.format := 0;
 135     mode.refresh_rate := 0;
 136     mode.driverdata := nil;
 137     if (SDL_GetClosestDisplayMode(0, @mode, @cmode) = nil) then
 138     begin
 139       e_WriteLog('SDL: cannot find display mode for '+IntToStr(gScreenWidth), TMsgType.Notify);
 140       gScreenWidth := 800;
 141       gScreenHeight := 600;
 142     end
 143     else
 144     begin
 145       e_WriteLog('SDL: found display mode for '+IntToStr(gScreenWidth)+'x'+IntToStr(gScreenHeight)+': '+IntToStr(cmode.w)+'x'+IntToStr(cmode.h), TMsgType.Notify);
 146       gScreenWidth := cmode.w;
 147       gScreenHeight := cmode.h;
 148     end;
 149   end;
 150
 151   if (preserveGL) and (h_Wnd <> nil) and (not gFullscreen) and (not wasFullscreen) then
 152   begin
 153     //SDL_SetWindowMaximumSize(h_Wnd, gScreenWidth, gScreenHeight);
 154     //SDL_SetWindowDisplayMode(h_Wnd, @cmode);
 155     if (wMaximized) then SDL_RestoreWindow(h_Wnd);
 156     wMaximized := false;
 157     gWinMaximized := false;
 158     SDL_SetWindowSize(h_Wnd, gScreenWidth, gScreenHeight);
 159     //SDL_SetWindowFullscreen(h_Wnd, SDL_WINDOW_FULLSCREEN);
 160     //SDL_SetWindowFullscreen(h_Wnd, 0);
 161   end
 162   else
 163   begin
 164     KillGLWindow(preserveGL);
 165     h_Wnd := SDL_CreateWindow(PChar(wTitle), gWinRealPosX, gWinRealPosY, gScreenWidth, gScreenHeight, wFlags);
 166     if gFullscreen then
 167       SDL_SetWindowFullscreen(h_Wnd, SDL_WINDOW_FULLSCREEN);
 168     if (h_Wnd = nil) then exit;
 169   end;
 170   wasFullscreen := gFullscreen;
 171
 172   SDL_GL_MakeCurrent(h_Wnd, h_GL);
 173   SDL_ShowCursor(SDL_DISABLE);
 174   if (h_GL <> nil) then g_SetVSync(gVSync);
 175   if (gFullscreen) then
 176   begin
 177     nw := 0;
 178     nh := 0;
 179     SDL_GetWindowSize(h_Wnd, @nw, @nh);
 180     if (nw > 128) and (nh > 128) then
 181     begin
 182       e_WriteLog('SDL: fullscreen window got size '+IntToStr(nw)+'x'+IntToStr(nh)+': '+IntToStr(gScreenWidth)+'x'+IntToStr(gScreenHeight), TMsgType.Notify);
 183       gScreenWidth := nw;
 184       gScreenHeight := nh;
 185     end
 186     else
 187     begin
 188       e_WriteLog('SDL: fullscreen window got invalid size: '+IntToStr(nw)+'x'+IntToStr(nh), TMsgType.Notify);
 189     end;
 190   end;
 191
 192   {$IFDEF ENABLE_HOLMES}
 193     fuiScrWdt := gScreenWidth;
 194     fuiScrHgt := gScreenHeight;
 195     if (h_GL <> nil) and (not preserveGL) then begin if (assigned(oglInitCB)) then oglInitCB(); end;
 196   {$ENDIF}
 197 {$ENDIF}
 198
 199   result := true;
 200 end;
 201
 202
 203 function GetDisplayModes (dbpp: LongWord; var selres: LongWord): SSArray;
 204 var
 205   mode: TSDL_DisplayMode;
 206   res, i, k, n, pw, ph: Integer;
 207 begin
 208   SetLength(result, 0);
 209   {$IFDEF HEADLESS}exit;{$ENDIF}
 210   k := 0; selres := 0;
 211   n := SDL_GetNumDisplayModes(0);
 212   pw := 0; ph := 0;
 213   for i := 0 to n do
 214   begin
 215     res := SDL_GetDisplayMode(0, i, @mode);
 216     if res < 0 then continue;
 217     if SDL_BITSPERPIXEL(mode.format) = gBPP then continue;
 218     if (mode.w = pw) and (mode.h = ph) then continue;
 219     if (mode.w = gScreenWidth) and (mode.h = gScreenHeight) then
 220       selres := k;
 221     Inc(k);
 222     SetLength(result, k);
 223     result[k-1] := IntToStr(mode.w) + 'x' + IntToStr(mode.h);
 224     pw := mode.w; ph := mode.h
 225   end;
 226
 227   e_WriteLog('SDL: Got ' + IntToStr(k) + ' resolutions.', TMsgType.Notify);
 228 end;
 229
 230
 231 procedure Sleep (ms: LongWord);
 232 begin
 233   SDL_Delay(ms);
 234 end;
 235
 236
 237 procedure ChangeWindowSize (requested: Boolean);
 238 begin
 239   e_LogWritefln('  ChangeWindowSize: (ws=%dx%d) (ss=%dx%d)', [gWinSizeX, gWinSizeY, gScreenWidth, gScreenHeight]);
 240   gWinSizeX := gScreenWidth;
 241   gWinSizeY := gScreenHeight;
 242 {$IF not DEFINED(HEADLESS)}
 243   {$IFDEF ENABLE_HOLMES}
 244     fuiScrWdt := gScreenWidth;
 245     fuiScrHgt := gScreenHeight;
 246   {$ENDIF}
 247   e_ResizeWindow(gScreenWidth, gScreenHeight);
 248   g_Game_SetupScreenSize();
 249   {$IF DEFINED(ANDROID)}
 250     (* This will fix menu reset on keyboard showing *)
 251     if requested then
 252       g_Menu_Reset;
 253   {$ELSE}
 254     g_Menu_Reset;
 255   {$ENDIF}
 256   g_Game_ClearLoading();
 257 {$ENDIF}
 258 end;
 259
 260
 261 function g_Window_SetSize (w, h: Word; fullscreen: Boolean): Boolean;
 262 {$IF not DEFINED(HEADLESS)}
 263 var
 264   preserve: Boolean;
 265 {$ENDIF}
 266 begin
 267   result := false;
 268 {$IF not DEFINED(HEADLESS)}
 269   preserve := false;
 270
 271   if (gScreenWidth <> w) or (gScreenHeight <> h) then
 272   begin
 273     result := true;
 274     preserve := true;
 275     gScreenWidth := w;
 276     gScreenHeight := h;
 277   end;
 278
 279   if (gFullscreen <> fullscreen) then
 280   begin
 281     result := true;
 282     preserve := true;
 283     gFullscreen := fullscreen;
 284     preserve := true;
 285   end;
 286
 287   if result then
 288   begin
 289     g_Window_SetDisplay(preserve);
 290     ChangeWindowSize(true);
 291   end;
 292 {$ENDIF}
 293 end;
 294
 295
 296 function WindowEventHandler (constref ev: TSDL_WindowEvent): Boolean;
 297 var
 298   wActivate, wDeactivate: Boolean;
 299 begin
 300   result := false;
 301   wActivate := false;
 302   wDeactivate := false;
 303
 304   case ev.event of
 305     SDL_WINDOWEVENT_MOVED:
 306     begin
 307       if not (gFullscreen or gWinMaximized) then
 308       begin
 309         gWinRealPosX := ev.data1;
 310         gWinRealPosY := ev.data2;
 311       end;
 312     end;
 313
 314     SDL_WINDOWEVENT_MINIMIZED:
 315     begin
 316       e_UnpressAllKeys();
 317       if not wMinimized then
 318       begin
 319         e_ResizeWindow(0, 0);
 320         wMinimized := true;
 321         if g_debug_WinMsgs then
 322         begin
 323           g_Console_Add('Now minimized');
 324           e_WriteLog('[DEBUG] WinMsgs: Now minimized', TMsgType.Notify);
 325         end;
 326         wDeactivate := true;
 327       end;
 328     end;
 329
 330     SDL_WINDOWEVENT_RESIZED:
 331     begin
 332       e_LogWritefln('Resize: (os=%dx%d) (ns=%dx%d)', [gScreenWidth, gScreenHeight, Integer(ev.data1), Integer(ev.data2)]);
 333       {if (gFullscreen) then
 334       begin
 335         e_LogWriteln('  fullscreen fix applied.');
 336         if (gScreenWidth <> ev.data1) or (gScreenHeight <> ev.data2) then
 337         begin
 338           SDL_SetWindowSize(h_Wnd, gScreenWidth, gScreenHeight);
 339         end;
 340       end
 341       else}
 342       begin
 343         gScreenWidth := ev.data1;
 344         gScreenHeight := ev.data2;
 345       end;
 346       ChangeWindowSize(false);
 347       SwapBuffers();
 348       if g_debug_WinMsgs then
 349       begin
 350         g_Console_Add('Resized to ' + IntToStr(ev.data1) + 'x' + IntToStr(ev.data2));
 351         e_WriteLog('[DEBUG] WinMsgs: Resized to ' + IntToStr(ev.data1) + 'x' + IntToStr(ev.data2), TMsgType.Notify);
 352       end;
 353     end;
 354
 355     SDL_WINDOWEVENT_EXPOSED:
 356       SwapBuffers();
 357
 358     SDL_WINDOWEVENT_MAXIMIZED:
 359     begin
 360       wMaximized := true;
 361       if wMinimized then
 362       begin
 363         e_ResizeWindow(gScreenWidth, gScreenHeight);
 364         wMinimized := false;
 365         wActivate := true;
 366       end;
 367       if (not gWinMaximized) and (not gFullscreen) then
 368       begin
 369         gWinMaximized := true;
 370         if g_debug_WinMsgs then
 371         begin
 372           g_Console_Add('Now maximized');
 373           e_WriteLog('[DEBUG] WinMsgs: Now maximized', TMsgType.Notify);
 374         end;
 375       end;
 376     end;
 377
 378     SDL_WINDOWEVENT_RESTORED:
 379     begin
 380       wMaximized := false;
 381       if wMinimized then
 382       begin
 383         e_ResizeWindow(gScreenWidth, gScreenHeight);
 384         wMinimized := false;
 385         wActivate := true;
 386       end;
 387       gWinMaximized := false;
 388       if g_debug_WinMsgs then
 389       begin
 390         g_Console_Add('Now restored');
 391         e_WriteLog('[DEBUG] WinMsgs: Now restored', TMsgType.Notify);
 392       end;
 393     end;
 394
 395     SDL_WINDOWEVENT_FOCUS_GAINED:
 396     begin
 397       wActivate := true;
 398       //e_WriteLog('window gained focus!', MSG_NOTIFY);
 399     end;
 400
 401     SDL_WINDOWEVENT_FOCUS_LOST:
 402     begin
 403       wDeactivate := true;
 404       e_UnpressAllKeys();
 405       //e_WriteLog('window lost focus!', MSG_NOTIFY);
 406     end;
 407   end;
 408
 409   if wDeactivate then
 410   begin
 411     if gWinActive then
 412     begin
 413       e_WriteLog('deactivating window', TMsgType.Notify);
 414       e_EnableInput := false;
 415       e_ClearInputBuffer();
 416
 417       if gMuteWhenInactive then
 418       begin
 419         //e_WriteLog('deactivating sounds', MSG_NOTIFY);
 420         e_MuteChannels(true);
 421       end;
 422
 423       if g_debug_WinMsgs then
 424       begin
 425         g_Console_Add('Now inactive');
 426         e_WriteLog('[DEBUG] WinMsgs: Now inactive', TMsgType.Notify);
 427       end;
 428
 429       gWinActive := false;
 430
 431       {$IFDEF ENABLE_HOLMES}
 432         if assigned(winBlurCB) then winBlurCB();
 433       {$ENDIF}
 434     end;
 435   end
 436   else if wActivate then
 437   begin
 438     if not gWinActive then
 439     begin
 440       //e_WriteLog('activating window', MSG_NOTIFY);
 441       e_EnableInput := true;
 442
 443       if gMuteWhenInactive then
 444       begin
 445         //e_WriteLog('activating sounds', MSG_NOTIFY);
 446         e_MuteChannels(false);
 447       end;
 448
 449       if g_debug_WinMsgs then
 450       begin
 451         g_Console_Add('Now active');
 452         e_WriteLog('[DEBUG] WinMsgs: Now active', TMsgType.Notify);
 453       end;
 454
 455       gWinActive := true;
 456
 457       {$IFDEF ENABLE_HOLMES}
 458         if assigned(winFocusCB) then winFocusCB();
 459       {$ENDIF}
 460     end;
 461   end;
 462 end;
 463
 464
 465 function EventHandler (var ev: TSDL_Event): Boolean;
 466 var
 467   key, keychr: Word;
 468   uc: UnicodeChar;
 469   down: Boolean;
 470 begin
 471   result := false;
 472
 473   case ev.type_ of
 474     SDL_WINDOWEVENT:
 475       result := WindowEventHandler(ev.window);
 476
 477     SDL_QUITEV:
 478       begin
 479         if (gExit <> EXIT_QUIT) then
 480         begin
 481           if not wLoadingProgress then
 482           begin
 483             g_Game_Free();
 484             g_Game_Quit();
 485           end
 486           else
 487           begin
 488             wLoadingQuit := true;
 489           end;
 490         end;
 491         result := true;
 492       end;
 493
 494     SDL_KEYDOWN, SDL_KEYUP:
 495       begin
 496         key := ev.key.keysym.scancode;
 497         if key = SDL_SCANCODE_AC_BACK then
 498           key := SDL_SCANCODE_ESCAPE;
 499         down := (ev.type_ = SDL_KEYDOWN);
 500         {$IF not DEFINED(HEADLESS) and DEFINED(ENABLE_HOLMES)}
 501         if fuiOnSDLEvent(ev) then
 502         begin
 503           // event eaten, but...
 504           if not down then e_KeyUpDown(key, false);
 505           exit;
 506         end;
 507         {$ENDIF}
 508         e_KeyUpDown(key, down);
 509         if down then KeyPress(key);
 510       end;
 511
 512     {$IF not DEFINED(HEADLESS) and DEFINED(ENABLE_HOLMES)}
 513     SDL_MOUSEBUTTONDOWN, SDL_MOUSEBUTTONUP, SDL_MOUSEWHEEL, SDL_MOUSEMOTION:
 514       fuiOnSDLEvent(ev);
 515     {$ENDIF}
 516
 517     SDL_TEXTINPUT:
 518       begin
 519         Utf8ToUnicode(@uc, PChar(ev.text.text), 1);
 520         keychr := Word(uc);
 521         if (keychr > 127) then keychr := Word(wchar2win(WideChar(keychr)));
 522         if (keychr > 0) and (keychr <= 255) then CharPress(AnsiChar(keychr));
 523       end;
 524
 525     SDL_FINGERMOTION, SDL_FINGERDOWN, SDL_FINGERUP:
 526       g_Touch_HandleEvent(ev.tfinger);
 527
 528     // other key presses and joysticks are handled in e_input
 529   end;
 530 end;
 531
 532
 533 procedure SwapBuffers ();
 534 begin
 535   {$IF not DEFINED(HEADLESS)}
 536   SDL_GL_SwapWindow(h_Wnd);
 537   {$ENDIF}
 538 end;
 539
 540
 541 function CreateGLWindow (Title: PChar): Boolean;
 542 begin
 543   result := false;
 544
 545   gWinSizeX := gScreenWidth;
 546   gWinSizeY := gScreenHeight;
 547
 548 {$IF not DEFINED(HEADLESS)}
 549   wTitle := Title;
 550 {$ENDIF}
 551   e_WriteLog('Creating window', TMsgType.Notify);
 552
 553   if not g_Window_SetDisplay() then
 554   begin
 555     KillGLWindow(false);
 556     e_WriteLog('Window creation error (resolution not supported?)', TMsgType.Fatal);
 557     exit;
 558   end;
 559
 560 {$IF not DEFINED(HEADLESS)}
 561   h_GL := SDL_GL_CreateContext(h_Wnd);
 562   if (h_GL = nil) then exit;
 563   {$IFDEF ENABLE_HOLMES}
 564     fuiScrWdt := gScreenWidth;
 565     fuiScrHgt := gScreenHeight;
 566   {$ENDIF}
 567   SDL_GL_MakeCurrent(h_Wnd, h_GL);
 568 {$IFDEF USE_NANOGL}
 569   if nanoGL_Init() = 0 then
 570   begin
 571     KillGLWindow(false);
 572     e_WriteLog('nanoGL initialization error', TMsgType.Fatal);
 573     exit;
 574   end;
 575 {$ENDIF}
 576 {$IFDEF USE_NOGL}
 577   nogl_Init;
 578 {$ENDIF}
 579   {$IFDEF ENABLE_HOLMES}
 580     if (assigned(oglInitCB)) then oglInitCB();
 581   {$ENDIF}
 582   if (h_GL <> nil) then g_SetVSync(gVSync);
 583 {$ENDIF}
 584
 585   e_ResizeWindow(gScreenWidth, gScreenHeight);
 586   e_InitGL();
 587
 588   result := true;
 589 end;
 590
 591
 592 {$IFDEF WINDOWS}
 593 // windoze sux; in headless mode `GetTickCount()` (and SDL) returns shit
 594 function GetTimer (): Int64;
 595 var
 596   F, C: Int64;
 597 begin
 598   QueryPerformanceFrequency(F);
 599   QueryPerformanceCounter(C);
 600   result := Round(C/F*1000{000});
 601 end;
 602 {$ELSE}
 603 function GetTimer (): Int64;
 604 var
 605   t: Uint32;
 606   tt: Int64;
 607 begin
 608   t := SDL_GetTicks();
 609   if (ticksOverflow = -1) then
 610   begin
 611     ticksOverflow := 0;
 612     lastTicks := t;
 613   end
 614   else
 615   begin
 616     if (lastTicks > t) then
 617     begin
 618       // overflow, increment overflow ;-)
 619       ticksOverflow := ticksOverflow+(Int64($ffffffff)+Int64(1));
 620       tt := (Int64($ffffffff)+Int64(1))+Int64(t);
 621       t := Uint32(tt-lastTicks);
 622     end;
 623   end;
 624   lastTicks := t;
 625   result := ticksOverflow+Int64(t);
 626 end;
 627 {$ENDIF}
 628
 629
 630 procedure ResetTimer ();
 631 begin
 632   wNeedTimeReset := true;
 633 end;
 634
 635
 636 procedure PushExitEvent ();
 637 var
 638   ev: TSDL_Event;
 639 begin
 640   ev.type_ := SDL_QUITEV;
 641   SDL_PushEvent(@ev);
 642 end;
 643
 644
 645 var
 646   prevLoadingUpdateTime: UInt64 = 0;
 647
 648 procedure ProcessLoading (forceUpdate: Boolean=false);
 649 var
 650   ev: TSDL_Event;
 651   ID: LongWord;
 652   stt: UInt64;
 653 begin
 654   FillChar(ev, sizeof(ev), 0);
 655   wLoadingProgress := true;
 656
 657   while (SDL_PollEvent(@ev) > 0) do
 658   begin
 659     EventHandler(ev);
 660     if (ev.type_ = SDL_QUITEV) then break;
 661   end;
 662   e_PollJoysticks();
 663
 664   if (ev.type_ = SDL_QUITEV) or (gExit = EXIT_QUIT) then
 665   begin
 666     wLoadingProgress := false;
 667     exit;
 668   end;
 669
 670   if not wMinimized then
 671   begin
 672     if forceUpdate then
 673     begin
 674       prevLoadingUpdateTime := getTimeMilli();
 675     end
 676     else
 677     begin
 678       stt := getTimeMilli();
 679       if (stt < prevLoadingUpdateTime) or (stt-prevLoadingUpdateTime >= ProgressUpdateMSecs) then
 680       begin
 681         prevLoadingUpdateTime := stt;
 682         forceUpdate := true;
 683       end;
 684     end;
 685
 686     if forceUpdate then
 687     begin
 688       if g_Texture_Get('INTER', ID) then
 689       begin
 690         e_DrawSize(ID, 0, 0, 0, false, false, gScreenWidth, gScreenHeight);
 691         e_DarkenQuadWH(0, 0, gScreenWidth, gScreenHeight, 150);
 692       end
 693       else
 694       begin
 695         e_Clear(GL_COLOR_BUFFER_BIT, 0, 0, 0);
 696       end;
 697
 698       DrawLoadingStat();
 699       SwapBuffers();
 700     end;
 701   end;
 702
 703   e_SoundUpdate();
 704
 705   if NetMode = NET_SERVER then
 706   begin
 707     g_Net_Host_Update();
 708   end
 709   else
 710   begin
 711     if (NetMode = NET_CLIENT) and (NetState <> NET_STATE_AUTH) then g_Net_Client_UpdateWhileLoading();
 712   end;
 713
 714   wLoadingProgress := false;
 715 end;
 716
 717
 718 function g_ProcessMessages (): Boolean;
 719 var
 720   ev: TSDL_Event;
 721 begin
 722   result := false;
 723   FillChar(ev, SizeOf(ev), 0);
 724   while (SDL_PollEvent(@ev) > 0) do
 725   begin
 726     result := EventHandler(ev);
 727     if (ev.type_ = SDL_QUITEV) then exit;
 728   end;
 729   e_PollJoysticks();
 730 end;
 731
 732
 733 function ProcessMessage (): Boolean;
 734 var
 735   i, t: Integer;
 736 begin
 737   result := g_ProcessMessages();
 738
 739   Time := GetTimer();
 740   Time_Delta := Time-Time_Old;
 741
 742   flag := false;
 743
 744   if wNeedTimeReset then
 745   begin
 746     Time_Delta := 28;
 747     wNeedTimeReset := false;
 748   end;
 749
 750   g_Map_ProfilersBegin();
 751   g_Mons_ProfilersBegin();
 752
 753   t := Time_Delta div 28;
 754   if (t > 0) then
 755   begin
 756     flag := true;
 757     for i := 1 to t do
 758     begin
 759            if (NetMode = NET_SERVER) then g_Net_Host_Update()
 760       else if (NetMode = NET_CLIENT) then g_Net_Client_Update();
 761       Update();
 762     end;
 763   end
 764   else
 765   begin
 766          if (NetMode = NET_SERVER) then g_Net_Host_Update()
 767     else if (NetMode = NET_CLIENT) then g_Net_Client_Update();
 768   end;
 769
 770   g_Map_ProfilersEnd();
 771   g_Mons_ProfilersEnd();
 772
 773   if wLoadingQuit then
 774   begin
 775     g_Game_Free();
 776     g_Game_Quit();
 777   end;
 778
 779   if (gExit = EXIT_QUIT) then
 780   begin
 781     result := true;
 782     exit;
 783   end;
 784
 785   // Âðåìÿ ïðåäûäóùåãî îáíîâëåíèÿ
 786   if flag then
 787   begin
 788     Time_Old := Time-(Time_Delta mod 28);
 789     if (not wMinimized) then
 790     begin
 791       Draw();
 792       SwapBuffers();
 793     end;
 794   end
 795   else
 796   begin
 797     Sleep(1); // release time slice, so we won't eat 100% CPU
 798   end;
 799
 800   e_SoundUpdate();
 801 end;
 802
 803
 804 procedure ReDrawWindow ();
 805 begin
 806   SwapBuffers();
 807 end;
 808
 809
 810 procedure g_SetVSync (vsync: Boolean);
 811 {$IF not DEFINED(HEADLESS)}
 812 var
 813   v: Byte;
 814 {$ENDIF}
 815 begin
 816 {$IF not DEFINED(HEADLESS)}
 817   if vsync then v := 1 else v := 0;
 818   if (SDL_GL_SetSwapInterval(v) <> 0) then
 819   begin
 820     e_WriteLog('oops; can''t change vsync option, restart required', TMsgType.Warning);
 821   end
 822   else
 823   begin
 824     if vsync then e_WriteLog('VSync: ON', TMsgType.Notify) else e_WriteLog('VSync: OFF', TMsgType.Notify);
 825   end;
 826 {$ENDIF}
 827 end;
 828
 829
 830 procedure InitOpenGL ();
 831 begin
 832 {$IF not DEFINED(HEADLESS)}
 833   {$IFDEF USE_GLES1}
 834     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 1);
 835     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
 836     SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
 837   {$ELSE}
 838     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
 839     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
 840     SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
 841     SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
 842     SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
 843     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 844     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 845     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); // lights; it is enough to have 1-bit stencil buffer for lighting, but...
 846   {$ENDIF}
 847 {$ENDIF}
 848 end;
 849
 850
 851 function glHasExtension (const name: AnsiString): Boolean;
 852 var
 853   exts: PChar;
 854   i: Integer;
 855   found: Boolean;
 856   extName: ShortString;
 857 begin
 858   result := false;
 859   if (Length(name) = 0) then exit;
 860   exts := glGetString(GL_EXTENSIONS);
 861   if (exts = nil) then exit;
 862   while (exts[0] <> #0) and (exts[0] = ' ') do Inc(exts);
 863   while (exts[0] <> #0) do
 864   begin
 865     if gwin_dump_extensions then
 866     begin
 867       i := 0;
 868       while (exts[i] <> #0) and (exts[i] <> ' ') do Inc(i);
 869       if i > 255 then
 870       begin
 871         e_WriteLog('FUUUUUUUUUUUUU', TMsgType.Warning);
 872       end
 873       else
 874       begin
 875         Move(exts^, extName[1], i);
 876         extName[0] := Char(i);
 877         e_WriteLog(Format('EXT: %s', [extName]), TMsgType.Notify);
 878       end;
 879     end;
 880     found := true;
 881     for i := 0 to length(name)-1 do
 882     begin
 883       if (exts[i] = #0) then begin found := false; break; end;
 884       if (exts[i] <> name[i+1]) then begin found := false; break; end;
 885     end;
 886     if found and ((exts[Length(name)] = #0) or (exts[Length(name)] = ' ')) then begin result := true; exit; end;
 887     while (exts[0] <> #0) and (exts[0] <> ' ') do Inc(exts);
 888     while (exts[0] <> #0) and (exts[0] = ' ') do Inc(exts);
 889   end;
 890 end;
 891
 892
 893 function SDLMain (): Integer;
 894 var
 895   idx: Integer;
 896   {$IF not DEFINED(HEADLESS)}
 897   ltmp: Integer;
 898   {$ENDIF}
 899   arg: AnsiString;
 900   mdfo: TStream;
 901   {$IFDEF ENABLE_HOLMES}
 902   itmp: Integer;
 903   valres: Word;
 904   {$ENDIF}
 905 begin
 906 {$IFDEF HEADLESS}
 907   e_NoGraphics := true;
 908 {$ELSE}
 909   {$IFDEF ENABLE_HOLMES}
 910     if (not g_holmes_imfunctional) then
 911     begin
 912       uiInitialize();
 913       uiContext.font := 'win14';
 914     end;
 915   {$ENDIF}
 916 {$ENDIF}
 917
 918   idx := 1;
 919   while (idx <= ParamCount) do
 920   begin
 921     arg := ParamStr(idx);
 922     Inc(idx);
 923     if arg = '--opengl-dump-exts' then gwin_dump_extensions := true;
 924     //if arg = '--twinkletwinkle' then gwin_k8_enable_light_experiments := true;
 925     if arg = '--jah' then g_profile_history_size := 100;
 926     if arg = '--no-particles' then gpart_dbg_enabled := false;
 927     if arg = '--no-los' then gmon_dbg_los_enabled := false;
 928
 929     if arg = '--profile-render' then g_profile_frame_draw := true;
 930     if arg = '--profile-coldet' then g_profile_collision := true;
 931     if arg = '--profile-los' then g_profile_los := true;
 932
 933     if arg = '--no-part-phys' then gpart_dbg_phys_enabled := false;
 934     if arg = '--no-part-physics' then gpart_dbg_phys_enabled := false;
 935     if arg = '--no-particles-phys' then gpart_dbg_phys_enabled := false;
 936     if arg = '--no-particles-physics' then gpart_dbg_phys_enabled := false;
 937     if arg = '--no-particle-phys' then gpart_dbg_phys_enabled := false;
 938     if arg = '--no-particle-physics' then gpart_dbg_phys_enabled := false;
 939
 940     {.$IF DEFINED(D2F_DEBUG)}
 941     if arg = '--aimline' then g_dbg_aimline_on := true;
 942     {.$ENDIF}
 943
 944 {$IFDEF ENABLE_HOLMES}
 945     if arg = '--holmes' then begin g_holmes_enabled := true; g_Game_SetDebugMode(); end;
 946
 947     if (arg = '--holmes-ui-scale') or (arg = '-holmes-ui-scale') then
 948     begin
 949       if (idx <= ParamCount) then
 950       begin
 951         if not conParseFloat(fuiRenderScale, ParamStr(idx)) then fuiRenderScale := 1.0;
 952         Inc(idx);
 953       end;
 954     end;
 955
 956     if (arg = '--holmes-font') or (arg = '-holmes-font') then
 957     begin
 958       if (idx <= ParamCount) then
 959       begin
 960         itmp := 0;
 961         val(ParamStr(idx), itmp, valres);
 962         {$IFNDEF HEADLESS}
 963         if (valres = 0) and (not g_holmes_imfunctional) then
 964         begin
 965           case itmp of
 966             8: uiContext.font := 'win8';
 967             14: uiContext.font := 'win14';
 968             16: uiContext.font := 'win16';
 969           end;
 970         end;
 971         {$ELSE}
 972         // fuck off, fpc!
 973         itmp := itmp;
 974         valres := valres;
 975         {$ENDIF}
 976         Inc(idx);
 977       end;
 978     end;
 979 {$ENDIF}
 980
 981     if (arg = '--game-scale') or (arg = '-game-scale') then
 982     begin
 983       if (idx <= ParamCount) then
 984       begin
 985         if not conParseFloat(g_dbg_scale, ParamStr(idx)) then g_dbg_scale := 1.0;
 986         Inc(idx);
 987       end;
 988     end;
 989
 990     if (arg = '--write-mapdef') or (arg = '-write-mapdef') then
 991     begin
 992       mdfo := createDiskFile('mapdef.txt');
 993       mdfo.WriteBuffer(defaultMapDef[1], Length(defaultMapDef));
 994       mdfo.Free();
 995       Halt(0);
 996     end;
 997   end;
 998
 999   e_WriteLog('Initializing OpenGL', TMsgType.Notify);
1000   InitOpenGL();
1001
1002   e_WriteLog('Creating GL window', TMsgType.Notify);
1003   if not CreateGLWindow(PChar(Format('Doom 2D: Forever %s', [GAME_VERSION]))) then
1004   begin
1005     result := 0;
1006     e_WriteLog('Unable to create GL window: ' + SDL_GetError(), TMsgType.Fatal);
1007     exit;
1008   end;
1009
1010   {EnumDisplayModes();}
1011
1012 {$IFDEF HEADLESS}
1013   //gwin_k8_enable_light_experiments := false;
1014   gwin_has_stencil := false;
1015   glLegacyNPOT := false;
1016   gwin_dump_extensions := false;
1017 {$ELSE}
1018   SDL_GL_GetAttribute(SDL_GL_STENCIL_SIZE, @ltmp);
1019   e_LogWritefln('stencil buffer size: %s', [ltmp]);
1020   gwin_has_stencil := (ltmp > 0);
1021
1022   if glHasExtension('GL_ARB_texture_non_power_of_two') or
1023      glHasExtension('GL_OES_texture_npot') then
1024   begin
1025     e_WriteLog('NPOT textures: YES', TMsgType.Notify);
1026     glLegacyNPOT := false;
1027   end
1028   else
1029   begin
1030     e_WriteLog('NPOT textures: NO', TMsgType.Warning);
1031     glLegacyNPOT := true;
1032   end;
1033   gwin_dump_extensions := false;
1034 {$ENDIF}
1035
1036   Init();
1037   Time_Old := GetTimer();
1038
1039   // Êîìàíäíàÿ ñòðîêà
1040   if (ParamCount > 0) then g_Game_Process_Params();
1041
1042   // Çàïðîñ ÿçûêà
1043   if (not gGameOn) and gAskLanguage then g_Menu_AskLanguage();
1044
1045   e_WriteLog('Entering the main loop', TMsgType.Notify);
1046
1047   // main loop
1048   while not ProcessMessage() do begin end;
1049
1050   Release();
1051   KillGLWindow(false);
1052
1053   result := 0;
1054 end;
1055
1056
1057 end.