src/game/g_window.pas

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