use `QueryPerformanceCounter()` in shitdoze

[d2df-sdl.git] / src / game / g_window.pas

diff --git a/src/game/g_window.pas b/src/game/g_window.pas
index a41c9f44b08ed50dae2524f5a3a1d9c554400233..0429b77368be262a7b3d8e08c997e6653926e5fc 100644 (file)
--- a/src/game/g_window.pas
+++ b/src/game/g_window.pas
@@ -23,6 +23,7 @@ function  g_Window_SetSize(W, H: Word; FScreen: Boolean): Boolean;
 implementation
 
 uses
+{$IFDEF WIN32}Windows,{$ENDIF}
   SDL2, GL, GLExt, e_graphics, e_log, g_main,
   g_console, SysUtils, e_input, g_options, g_game,
   g_basic, g_textures, e_sound, g_sound, g_menu, ENet, g_net;
@@ -35,13 +36,15 @@ var
   flag: Boolean;
   wTitle: PChar = nil;
   wNeedTimeReset: Boolean = False;
-  wWindowCreated: Boolean = False;
+  //wWindowCreated: Boolean = False;
   //wCursorShown: Boolean = False;
   wMinimized: Boolean = False;
   //wNeedFree: Boolean = True;
   wLoadingProgress: Boolean = False;
   wLoadingQuit: Boolean = False;
   {wWinPause: Byte = 0;}
+  ticksOverflow: Int64 = -1;
+  lastTicks: Uint32 = 0; // to detect overflow
 
 const
   // TODO: move this to a separate file
@@ -71,6 +74,11 @@ function g_Window_SetDisplay(PreserveGL: Boolean = False): Boolean;
 var
   mode, cmode: TSDL_DisplayMode;
 begin
+{$IFDEF HEADLESS}
+  Result := True;
+  Exit;
+{$ENDIF}
+  
   Result := False;
 
   e_WriteLog('Setting display mode...', MSG_NOTIFY);
@@ -124,7 +132,7 @@ var
   res, i, k, n, pw, ph: Integer;
 begin
   SetLength(Result, 0);
-
+  {$IFDEF HEADLESS}Exit;{$ENDIF}
   k := 0; SelRes := 0;
   n := SDL_GetNumDisplayModes(0);
   pw := 0; ph := 0;
@@ -154,6 +162,7 @@ procedure ChangeWindowSize();
 begin
   gWinSizeX := gScreenWidth;
   gWinSizeY := gScreenHeight;
+  {$IFDEF HEADLESS}Exit;{$ENDIF}
   e_ResizeWindow(gScreenWidth, gScreenHeight);
   g_Game_SetupScreenSize();
   g_Menu_Reset();
@@ -165,6 +174,7 @@ var
   Preserve: Boolean;
 begin
   Result := False;
+  {$IFDEF HEADLESS}Exit;{$ENDIF}
   Preserve := False;
 
   if (gScreenWidth <> W) or (gScreenHeight <> H) then
@@ -273,23 +283,33 @@ begin
         e_WriteLog('[DEBUG] WinMsgs: Now restored', MSG_NOTIFY);
       end;
     end;
-    
+
     SDL_WINDOWEVENT_FOCUS_GAINED:
+    begin
       wActivate := True;
-    
+      //e_WriteLog('window gained focus!', MSG_NOTIFY);
+    end;
+
     SDL_WINDOWEVENT_FOCUS_LOST:
+    begin
       wDeactivate := True;
+      //e_WriteLog('window lost focus!', MSG_NOTIFY);
+    end;
   end;
-  
+
   if wDeactivate then
   begin
     if gWinActive then
     begin
+      e_WriteLog('deactivating window', MSG_NOTIFY);
       e_EnableInput := False;
       e_ClearInputBuffer();
 
       if gMuteWhenInactive then
+      begin
+        //e_WriteLog('deactivating sounds', MSG_NOTIFY);
         e_MuteChannels(True);
+      end;
 
       if g_debug_WinMsgs then
       begin
@@ -304,10 +324,14 @@ begin
   begin
     if not gWinActive then
     begin
+      //e_WriteLog('activating window', MSG_NOTIFY);
       e_EnableInput := True;
 
       if gMuteWhenInactive then
+      begin
+        //e_WriteLog('activating sounds', MSG_NOTIFY);
         e_MuteChannels(False);
+      end;
 
       if g_debug_WinMsgs then
       begin
@@ -367,6 +391,7 @@ end;
 
 procedure SwapBuffers();
 begin
+  {$IFDEF HEADLESS}Exit;{$ENDIF}
   SDL_GL_SwapWindow(h_Wnd);
 end;
 
@@ -376,7 +401,7 @@ begin
   if h_GL <> nil then SDL_GL_DeleteContext(h_GL);
   h_Wnd := nil;
   h_GL := nil;
-  wWindowCreated := False;
+  //wWindowCreated := False;
 end;
 
 function CreateGLWindow(Title: PChar): Boolean;
@@ -398,10 +423,11 @@ begin
     exit;
   end;
 
+{$IFNDEF HEADLESS}
   h_Gl := SDL_GL_CreateContext(h_Wnd);
   if h_Gl = nil then Exit;
-  
-  wWindowCreated := True;
+{$ENDIF}
+  //wWindowCreated := True;
 
   e_ResizeWindow(gScreenWidth, gScreenHeight);
   e_InitGL();
@@ -409,10 +435,42 @@ begin
   Result := True;
 end;
 
+{$IFDEF WIN32}
+// windoze sux; in headless mode `GetTickCount()` (and SDL) returns shit
 function GetTimer(): Int64;
+var
+  F, C: Int64;
 begin
-  Result := SDL_GetTicks() * 1000; // TODO: do we really need microseconds here?
+  QueryPerformanceFrequency(F);
+  QueryPerformanceCounter(C);
+  Result := Round(C/F*1000{000});
 end;
+{$ELSE}
+function GetTimer(): Int64;
+var
+  t: Uint32;
+  tt: Int64;
+begin
+  t := SDL_GetTicks() {* 1000}; // TODO: do we really need microseconds here? k8: NOPE!
+  if ticksOverflow = -1 then
+  begin
+    ticksOverflow := 0;
+    lastTicks := t;
+  end
+  else
+  begin
+    if lastTicks > t then
+    begin
+      // overflow, increment overflow ;-)
+      ticksOverflow := ticksOverflow+(Int64($ffffffff)+Int64(1));
+      tt := (Int64($ffffffff)+Int64(1))+Int64(t);
+      t := Uint32(tt-lastTicks);
+    end;
+  end;
+  lastTicks := t;
+  result := ticksOverflow+Int64(t);
+end;
+{$ENDIF}
 
 procedure ResetTimer();
 begin
@@ -492,11 +550,11 @@ begin
 
   if wNeedTimeReset then
   begin
-    Time_Delta := 27777;
+    Time_Delta := (27777 div 1000);
     wNeedTimeReset := False;
   end;
 
-  t := Time_Delta div 27777;
+  t := Time_Delta div (27777 div 1000);
   if t > 0 then
   begin
     flag := True;
@@ -528,7 +586,7 @@ begin
 // Âðåìÿ ïðåäûäóùåãî îáíîâëåíèÿ:
   if flag then
   begin
-    Time_Old := Time - (Time_Delta mod 27777);
+    Time_Old := Time - (Time_Delta mod (27777 div 1000));
     if (not wMinimized) then
     begin
       Draw();
@@ -552,6 +610,7 @@ procedure InitOpenGL(VSync: Boolean);
 var
   v: Byte;
 begin
+  {$IFDEF HEADLESS}Exit;{$ENDIF}
   if VSync then v := 1 else v := 0;
   SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
   SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
@@ -565,6 +624,10 @@ end;
 
 function SDLMain(): Integer;
 begin
+{$IFDEF HEADLESS}
+  e_NoGraphics := True;
+{$ENDIF}
+
   e_WriteLog('Creating GL window', MSG_NOTIFY);
   if not CreateGLWindow(PChar(Format('Doom 2D: Forever %s', [GAME_VERSION]))) then
   begin