src/game/g_window.pas

   1 {$MODE DELPHI}
   2 unit g_window;
   3
   4 interface
   5
   6 uses
   7   wadreader;
   8
   9 function  SDLMain(): Integer;
  10 function  GetTimer(): Int64;
  11 procedure ResetTimer();
  12 function  CreateGLWindow(Title: PChar): Boolean;
  13 procedure KillGLWindow();
  14 procedure PushExitEvent();
  15 function  ProcessMessage(): Boolean;
  16 procedure ProcessLoading();
  17 procedure ReDrawWindow();
  18 procedure SwapBuffers();
  19 procedure Sleep(ms: LongWord);
  20 function  GetDisplayModes(dBPP: DWORD; var SelRes: DWORD): SArray;
  21 function  g_Window_SetDisplay(PreserveGL: Boolean = False): Boolean;
  22 function  g_Window_SetSize(W, H: Word; FScreen: Boolean): Boolean;
  23
  24 implementation
  25
  26 uses
  27 {$IFDEF WINDOWS}Windows,{$ENDIF}
  28   SDL2, GL, GLExt, e_graphics, e_log, g_main,
  29   g_console, SysUtils, e_input, g_options, g_game,
  30   g_basic, g_textures, e_sound, g_sound, g_menu, ENet, g_net;
  31
  32 var
  33   h_Wnd: PSDL_Window;
  34   h_GL: TSDL_GLContext;
  35   wFlags: LongWord = 0;
  36   Time, Time_Delta, Time_Old: Int64;
  37   flag: Boolean;
  38   wTitle: PChar = nil;
  39   wNeedTimeReset: Boolean = False;
  40   //wWindowCreated: Boolean = False;
  41   //wCursorShown: Boolean = False;
  42   wMinimized: Boolean = False;
  43   //wNeedFree: Boolean = True;
  44   wLoadingProgress: Boolean = False;
  45   wLoadingQuit: Boolean = False;
  46   {wWinPause: Byte = 0;}
  47   ticksOverflow: Int64 = -1;
  48   lastTicks: Uint32 = 0; // to detect overflow
  49
  50 const
  51   // TODO: move this to a separate file
  52   CP1251: array [0..127] of Word = (
  53     $0402,$0403,$201A,$0453,$201E,$2026,$2020,$2021,$20AC,$2030,$0409,$2039,$040A,$040C,$040B,$040F,
  54     $0452,$2018,$2019,$201C,$201D,$2022,$2013,$2014,$003F,$2122,$0459,$203A,$045A,$045C,$045B,$045F,
  55     $00A0,$040E,$045E,$0408,$00A4,$0490,$00A6,$00A7,$0401,$00A9,$0404,$00AB,$00AC,$00AD,$00AE,$0407,
  56     $00B0,$00B1,$0406,$0456,$0491,$00B5,$00B6,$00B7,$0451,$2116,$0454,$00BB,$0458,$0405,$0455,$0457,
  57     $0410,$0411,$0412,$0413,$0414,$0415,$0416,$0417,$0418,$0419,$041A,$041B,$041C,$041D,$041E,$041F,
  58     $0420,$0421,$0422,$0423,$0424,$0425,$0426,$0427,$0428,$0429,$042A,$042B,$042C,$042D,$042E,$042F,
  59     $0430,$0431,$0432,$0433,$0434,$0435,$0436,$0437,$0438,$0439,$043A,$043B,$043C,$043D,$043E,$043F,
  60     $0440,$0441,$0442,$0443,$0444,$0445,$0446,$0447,$0448,$0449,$044A,$044B,$044C,$044D,$044E,$044F
  61   );
  62
  63 // TODO: make a transition table or something
  64 function WCharToCP1251(wc: Word): Word;
  65 var
  66   n: Word;
  67 begin
  68   Result := 0;
  69   for n := 0 to 127 do
  70     if CP1251[n] = wc then begin Result := n; break end;
  71   Result := Result + 128;
  72 end;
  73
  74 function g_Window_SetDisplay(PreserveGL: Boolean = False): Boolean;
  75 var
  76   mode, cmode: TSDL_DisplayMode;
  77 begin
  78 {$IFDEF HEADLESS}
  79   Result := True;
  80   Exit;
  81 {$ENDIF}
  82
  83   Result := False;
  84
  85   e_WriteLog('Setting display mode...', MSG_NOTIFY);
  86
  87   wFlags := SDL_WINDOW_OPENGL or SDL_WINDOW_RESIZABLE;
  88   if gFullscreen then wFlags := wFlags or SDL_WINDOW_FULLSCREEN;
  89   if gWinMaximized then wFlags := wFlags or SDL_WINDOW_MAXIMIZED;
  90
  91   if h_Wnd <> nil then
  92   begin
  93     SDL_DestroyWindow(h_Wnd);
  94     h_Wnd := nil;
  95   end;
  96
  97   if gFullscreen then
  98   begin
  99     mode.w := gScreenWidth;
 100     mode.h := gScreenHeight;
 101     mode.format := 0;
 102     mode.refresh_rate := 0;
 103     mode.driverdata := nil;
 104     if SDL_GetClosestDisplayMode(0, @mode, @cmode) = nil then
 105     begin
 106       gScreenWidth := 800;
 107       gScreenHeight := 600;
 108     end
 109     else
 110     begin
 111       gScreenWidth := cmode.w;
 112       gScreenHeight := cmode.h;
 113     end;
 114   end;
 115
 116   h_Wnd := SDL_CreateWindow(PChar(wTitle), gWinRealPosX, gWinRealPosY, gScreenWidth, gScreenHeight, wFlags);
 117   if h_Wnd = nil then Exit;
 118
 119   SDL_GL_MakeCurrent(h_Wnd, h_GL);
 120   SDL_ShowCursor(SDL_DISABLE);
 121
 122   Result := True;
 123 end;
 124
 125 procedure ReShowCursor();
 126 begin
 127   // TODO: what was this for?
 128 end;
 129
 130 function GetDisplayModes(dBPP: DWORD; var SelRes: DWORD): SArray;
 131 var
 132   mode: TSDL_DisplayMode;
 133   res, i, k, n, pw, ph: Integer;
 134 begin
 135   SetLength(Result, 0);
 136   {$IFDEF HEADLESS}Exit;{$ENDIF}
 137   k := 0; SelRes := 0;
 138   n := SDL_GetNumDisplayModes(0);
 139   pw := 0; ph := 0;
 140   for i := 0 to n do
 141   begin
 142     res := SDL_GetDisplayMode(0, i, @mode);
 143     if res < 0 then continue;
 144     if SDL_BITSPERPIXEL(mode.format) = gBPP then continue;
 145     if (mode.w = pw) and (mode.h = ph) then continue;
 146     if (mode.w = gScreenWidth) and (mode.h = gScreenHeight) then
 147       SelRes := k;
 148     Inc(k);
 149     SetLength(Result, k);
 150     Result[k-1] := IntToStr(mode.w) + 'x' + IntToStr(mode.h);
 151     pw := mode.w; ph := mode.h
 152   end;
 153
 154   e_WriteLog('SDL: Got ' + IntToStr(k) + ' resolutions.', MSG_NOTIFY);
 155 end;
 156
 157 procedure Sleep(ms: LongWord);
 158 begin
 159   SDL_Delay(ms);
 160 end;
 161
 162 procedure ChangeWindowSize();
 163 begin
 164   gWinSizeX := gScreenWidth;
 165   gWinSizeY := gScreenHeight;
 166   {$IFDEF HEADLESS}Exit;{$ENDIF}
 167   e_ResizeWindow(gScreenWidth, gScreenHeight);
 168   g_Game_SetupScreenSize();
 169   g_Menu_Reset();
 170   g_Game_ClearLoading();
 171 end;
 172
 173 function g_Window_SetSize(W, H: Word; FScreen: Boolean): Boolean;
 174 var
 175   Preserve: Boolean;
 176 begin
 177   Result := False;
 178   {$IFDEF HEADLESS}Exit;{$ENDIF}
 179   Preserve := False;
 180
 181   if (gScreenWidth <> W) or (gScreenHeight <> H) then
 182   begin
 183     Result := True;
 184     gScreenWidth := W;
 185     gScreenHeight := H;
 186   end;
 187
 188   if gFullscreen <> FScreen then
 189   begin
 190     Result := True;
 191     gFullscreen := FScreen;
 192     Preserve := True;
 193   end;
 194
 195   if Result then
 196   begin
 197     g_Window_SetDisplay(Preserve);
 198     ChangeWindowSize();
 199   end;
 200 end;
 201
 202 function WindowEventHandler(ev: TSDL_WindowEvent): Boolean;
 203 var
 204   wActivate, wDeactivate: Boolean;
 205 begin
 206   Result := False;
 207   wActivate := False;
 208   wDeactivate := False;
 209
 210   case ev.event of
 211     SDL_WINDOWEVENT_MOVED:
 212     begin
 213       if not (gFullscreen or gWinMaximized) then
 214       begin
 215         gWinRealPosX := ev.data1;
 216         gWinRealPosY := ev.data2;
 217       end;
 218     end;
 219
 220     SDL_WINDOWEVENT_MINIMIZED:
 221     begin
 222       if not wMinimized then
 223       begin
 224         e_ResizeWindow(0, 0);
 225         wMinimized := True;
 226
 227         if g_debug_WinMsgs then
 228         begin
 229           g_Console_Add('Now minimized');
 230           e_WriteLog('[DEBUG] WinMsgs: Now minimized', MSG_NOTIFY);
 231         end;
 232         wDeactivate := True;
 233       end;
 234     end;
 235
 236     SDL_WINDOWEVENT_RESIZED:
 237     begin
 238       gScreenWidth := ev.data1;
 239       gScreenHeight := ev.data2;
 240       ChangeWindowSize();
 241       SwapBuffers();
 242       if g_debug_WinMsgs then
 243       begin
 244         g_Console_Add('Resized to ' + IntToStr(ev.data1) + 'x' + IntToStr(ev.data2));
 245         e_WriteLog('[DEBUG] WinMsgs: Resized to ' + IntToStr(ev.data1) + 'x' + IntToStr(ev.data2), MSG_NOTIFY);
 246       end;
 247     end;
 248
 249     SDL_WINDOWEVENT_EXPOSED:
 250       SwapBuffers();
 251
 252     SDL_WINDOWEVENT_MAXIMIZED:
 253     begin
 254       if wMinimized then
 255       begin
 256         e_ResizeWindow(gScreenWidth, gScreenHeight);
 257         wMinimized := False;
 258         wActivate := True;
 259       end;
 260       if not gWinMaximized then
 261       begin
 262         gWinMaximized := True;
 263         if g_debug_WinMsgs then
 264         begin
 265           g_Console_Add('Now maximized');
 266           e_WriteLog('[DEBUG] WinMsgs: Now maximized', MSG_NOTIFY);
 267         end;
 268       end;
 269     end;
 270
 271     SDL_WINDOWEVENT_RESTORED:
 272     begin
 273       if wMinimized then
 274       begin
 275         e_ResizeWindow(gScreenWidth, gScreenHeight);
 276         wMinimized := False;
 277         wActivate := True;
 278       end;
 279       if gWinMaximized then
 280         gWinMaximized := False;
 281       if g_debug_WinMsgs then
 282       begin
 283         g_Console_Add('Now restored');
 284         e_WriteLog('[DEBUG] WinMsgs: Now restored', MSG_NOTIFY);
 285       end;
 286     end;
 287
 288     SDL_WINDOWEVENT_FOCUS_GAINED:
 289     begin
 290       wActivate := True;
 291       //e_WriteLog('window gained focus!', MSG_NOTIFY);
 292     end;
 293
 294     SDL_WINDOWEVENT_FOCUS_LOST:
 295     begin
 296       wDeactivate := True;
 297       //e_WriteLog('window lost focus!', MSG_NOTIFY);
 298     end;
 299   end;
 300
 301   if wDeactivate then
 302   begin
 303     if gWinActive then
 304     begin
 305       e_WriteLog('deactivating window', MSG_NOTIFY);
 306       e_EnableInput := False;
 307       e_ClearInputBuffer();
 308
 309       if gMuteWhenInactive then
 310       begin
 311         //e_WriteLog('deactivating sounds', MSG_NOTIFY);
 312         e_MuteChannels(True);
 313       end;
 314
 315       if g_debug_WinMsgs then
 316       begin
 317         g_Console_Add('Now inactive');
 318         e_WriteLog('[DEBUG] WinMsgs: Now inactive', MSG_NOTIFY);
 319       end;
 320
 321       gWinActive := False;
 322     end;
 323   end
 324   else if wActivate then
 325   begin
 326     if not gWinActive then
 327     begin
 328       //e_WriteLog('activating window', MSG_NOTIFY);
 329       e_EnableInput := True;
 330
 331       if gMuteWhenInactive then
 332       begin
 333         //e_WriteLog('activating sounds', MSG_NOTIFY);
 334         e_MuteChannels(False);
 335       end;
 336
 337       if g_debug_WinMsgs then
 338       begin
 339         g_Console_Add('Now active');
 340         e_WriteLog('[DEBUG] WinMsgs: Now active', MSG_NOTIFY);
 341       end;
 342
 343       gWinActive := True;
 344     end;
 345   end;
 346 end;
 347
 348 function EventHandler(ev: TSDL_Event): Boolean;
 349 var
 350   key, keychr: Word;
 351   uc: UnicodeChar;
 352   //joy: Integer;
 353 begin
 354   Result := False;
 355   case ev.type_ of
 356     SDL_WINDOWEVENT:
 357       Result := WindowEventHandler(ev.window);
 358
 359     SDL_QUITEV:
 360     begin
 361       if gExit <> EXIT_QUIT then
 362       begin
 363         if not wLoadingProgress then
 364         begin
 365           g_Game_Free();
 366           g_Game_Quit();
 367         end
 368         else
 369           wLoadingQuit := True;
 370       end;
 371       Result := True;
 372     end;
 373
 374     SDL_KEYDOWN:
 375     begin
 376       key := ev.key.keysym.scancode;
 377       KeyPress(key);
 378     end;
 379
 380     SDL_TEXTINPUT:
 381     begin
 382       Utf8ToUnicode(@uc, PChar(ev.text.text), 1);
 383       keychr := Word(uc);
 384       if (keychr > 127) then
 385         keychr := WCharToCP1251(keychr);
 386       CharPress(Chr(keychr));
 387     end;
 388
 389     // other key presses and joysticks are handled in e_input
 390   end;
 391 end;
 392
 393 procedure SwapBuffers();
 394 begin
 395   {$IFDEF HEADLESS}Exit;{$ENDIF}
 396   SDL_GL_SwapWindow(h_Wnd);
 397 end;
 398
 399 procedure KillGLWindow();
 400 begin
 401   if h_Wnd <> nil then SDL_DestroyWindow(h_Wnd);
 402   if h_GL <> nil then SDL_GL_DeleteContext(h_GL);
 403   h_Wnd := nil;
 404   h_GL := nil;
 405   //wWindowCreated := False;
 406 end;
 407
 408 function CreateGLWindow(Title: PChar): Boolean;
 409 //var
 410 //  flags: LongWord;
 411 begin
 412   Result := False;
 413
 414   gWinSizeX := gScreenWidth;
 415   gWinSizeY := gScreenHeight;
 416
 417   wTitle := Title;
 418   e_WriteLog('Creating window', MSG_NOTIFY);
 419
 420   if not g_Window_SetDisplay() then
 421   begin
 422     KillGLWindow();
 423     e_WriteLog('Window creation error (resolution not supported?)', MSG_FATALERROR);
 424     exit;
 425   end;
 426
 427 {$IFNDEF HEADLESS}
 428   h_Gl := SDL_GL_CreateContext(h_Wnd);
 429   if h_Gl = nil then Exit;
 430 {$ENDIF}
 431   //wWindowCreated := True;
 432
 433   e_ResizeWindow(gScreenWidth, gScreenHeight);
 434   e_InitGL();
 435
 436   Result := True;
 437 end;
 438
 439 {$IFDEF WINDOWS}
 440 // windoze sux; in headless mode `GetTickCount()` (and SDL) returns shit
 441 function GetTimer(): Int64;
 442 var
 443   F, C: Int64;
 444 begin
 445   QueryPerformanceFrequency(F);
 446   QueryPerformanceCounter(C);
 447   Result := Round(C/F*1000{000});
 448 end;
 449 {$ELSE}
 450 function GetTimer(): Int64;
 451 var
 452   t: Uint32;
 453   tt: Int64;
 454 begin
 455   t := SDL_GetTicks() {* 1000}; // TODO: do we really need microseconds here? k8: NOPE!
 456   if ticksOverflow = -1 then
 457   begin
 458     ticksOverflow := 0;
 459     lastTicks := t;
 460   end
 461   else
 462   begin
 463     if lastTicks > t then
 464     begin
 465       // overflow, increment overflow ;-)
 466       ticksOverflow := ticksOverflow+(Int64($ffffffff)+Int64(1));
 467       tt := (Int64($ffffffff)+Int64(1))+Int64(t);
 468       t := Uint32(tt-lastTicks);
 469     end;
 470   end;
 471   lastTicks := t;
 472   result := ticksOverflow+Int64(t);
 473 end;
 474 {$ENDIF}
 475
 476 procedure ResetTimer();
 477 begin
 478   wNeedTimeReset := True;
 479 end;
 480
 481 procedure PushExitEvent();
 482 var
 483   ev: TSDL_Event;
 484 begin
 485   ev.type_ := SDL_QUITEV;
 486   SDL_PushEvent(@ev);
 487 end;
 488
 489 procedure ProcessLoading();
 490 var
 491   ev: TSDL_Event;
 492   ID: DWORD;
 493 begin
 494   FillChar(ev, SizeOf(ev), 0);
 495   //wNeedFree := False;
 496   wLoadingProgress := True;
 497   while SDL_PollEvent(@ev) > 0 do
 498   begin
 499     if (ev.type_ = SDL_QUITEV) then
 500       break;
 501   end;
 502   //wNeedFree := True;
 503
 504   if (ev.type_ = SDL_QUITEV) or (gExit = EXIT_QUIT) then
 505   begin
 506     wLoadingProgress := False;
 507     exit;
 508   end;
 509
 510   if not wMinimized then
 511   begin
 512     if g_Texture_Get('INTER', ID) then
 513       e_DrawSize(ID, 0, 0, 0, False, False, gScreenWidth, gScreenHeight)
 514     else
 515       e_Clear(GL_COLOR_BUFFER_BIT, 0, 0, 0);
 516
 517     DrawLoadingStat();
 518     SwapBuffers();
 519
 520     ReShowCursor();
 521   end;
 522
 523   e_SoundUpdate();
 524
 525   if NetMode = NET_SERVER then
 526     g_Net_Host_Update
 527   else
 528     if (NetMode = NET_CLIENT) and (NetState <> NET_STATE_AUTH) then
 529       g_Net_Client_UpdateWhileLoading;
 530   wLoadingProgress := False;
 531 end;
 532
 533 function ProcessMessage(): Boolean;
 534 var
 535   i, t: Integer;
 536   ev: TSDL_Event;
 537 begin
 538   Result := False;
 539   FillChar(ev, SizeOf(ev), 0);
 540
 541   while SDL_PollEvent(@ev) > 0 do
 542   begin
 543     Result := EventHandler(ev);
 544     if ev.type_ = SDL_QUITEV then exit;
 545   end;
 546
 547   Time := GetTimer();
 548   Time_Delta := Time - Time_Old;
 549
 550   flag := False;
 551
 552   if wNeedTimeReset then
 553   begin
 554     Time_Delta := (27777 div 1000);
 555     wNeedTimeReset := False;
 556   end;
 557
 558   t := Time_Delta div (27777 div 1000);
 559   if t > 0 then
 560   begin
 561     flag := True;
 562     for i := 1 to t do
 563     begin
 564       if NetMode = NET_SERVER then g_Net_Host_Update()
 565       else if NetMode = NET_CLIENT then g_Net_Client_Update();
 566       Update();
 567     end;
 568   end
 569   else
 570   begin
 571     if NetMode = NET_SERVER then g_Net_Host_Update()
 572     else if NetMode = NET_CLIENT then g_Net_Client_Update();
 573   end;
 574
 575   if wLoadingQuit then
 576   begin
 577     g_Game_Free();
 578     g_Game_Quit();
 579   end;
 580
 581   if gExit = EXIT_QUIT then
 582   begin
 583     Result := True;
 584     Exit;
 585   end;
 586
 587 // Âðåìÿ ïðåäûäóùåãî îáíîâëåíèÿ:
 588   if flag then
 589   begin
 590     Time_Old := Time - (Time_Delta mod (27777 div 1000));
 591     if (not wMinimized) then
 592     begin
 593       Draw();
 594       SwapBuffers();
 595       ReShowCursor();
 596     end;
 597   end
 598   else
 599     Sleep(1);
 600
 601   e_SoundUpdate();
 602 end;
 603
 604 procedure ReDrawWindow;
 605 begin
 606   SwapBuffers();
 607   ReShowCursor();
 608 end;
 609
 610 procedure InitOpenGL(VSync: Boolean);
 611 var
 612   v: Byte;
 613 begin
 614   {$IFDEF HEADLESS}Exit;{$ENDIF}
 615   if VSync then v := 1 else v := 0;
 616   SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
 617   SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
 618   SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
 619   SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
 620   SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
 621   SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
 622   SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 623   SDL_GL_SetSwapInterval(v);
 624 end;
 625
 626 function SDLMain(): Integer;
 627 begin
 628 {$IFDEF HEADLESS}
 629   e_NoGraphics := True;
 630 {$ENDIF}
 631
 632   e_WriteLog('Creating GL window', MSG_NOTIFY);
 633   if not CreateGLWindow(PChar(Format('Doom 2D: Forever %s', [GAME_VERSION]))) then
 634   begin
 635     Result := 0;
 636     exit;
 637   end;
 638
 639   e_WriteLog('Initializing OpenGL', MSG_NOTIFY);
 640   InitOpenGL(gVSync);
 641
 642   {EnumDisplayModes();}
 643
 644   Init();
 645   Time_Old := GetTimer();
 646
 647 // Êîìàíäíàÿ ñòðîêà:
 648   if ParamCount > 0 then
 649     g_Game_Process_Params();
 650
 651 // Çàïðîñ ÿçûêà:
 652   if (not gGameOn) and gAskLanguage then
 653     g_Menu_AskLanguage();
 654
 655   e_WriteLog('Entering the main loop', MSG_NOTIFY);
 656
 657   while not ProcessMessage() do
 658     { Main Loop } ;
 659
 660   Release();
 661   KillGLWindow();
 662
 663   Result := 0;
 664 end;
 665
 666 end.