First multi platform version, works on Linux and Windows

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/1.1@855 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 102 insertions, 0 deletions

diff --git a/Game/Code/Classes/UTime.pas b/Game/Code/Classes/UTime.pas
new file mode 100644
index 00000000..3b7749a2
--- /dev/null
+++ b/Game/Code/Classes/UTime.pas
@@ -0,0 +1,102 @@
+unit UTime;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+{$I switches.inc}
+
+{$UNDEF DebugDisplay}
+
+type
+  TTime = class
+    constructor Create;
+    function GetTime: real;
+  end;
+
+procedure CountSkipTimeSet;
+procedure CountSkipTime;
+procedure CountMidTime;
+
+var
+  USTime:   TTime;
+  
+  TimeNew:  int64;
+  TimeOld:  int64;
+  TimeSkip: real;
+  TimeMid:  real;
+  TimeMidTemp:  int64;
+
+implementation
+
+uses
+//  sysutils,
+  sdl,
+  ucommon;
+  
+const
+  cSDLCorrectionRatio = 1000;
+
+(*
+BEST Option now ( after discussion with whiteshark ) seems to be to use SDL
+timer functions...
+
+SDL_delay
+SDL_GetTicks
+http://www.gamedev.net/community/forums/topic.asp?topic_id=466145&whichpage=1%EE%8D%B7
+*)
+
+
+constructor TTime.Create;
+begin
+  CountSkipTimeSet;
+end;
+
+
+procedure CountSkipTimeSet;
+begin
+  TimeNew  := SDL_GetTicks();
+
+  {$IFDEF DebugDisplay}
+  Writeln( 'CountSkipTimeSet : ' + inttostr(trunc(TimeNew)) );
+  {$ENDIF}
+end;
+
+
+procedure CountSkipTime;
+begin
+  TimeOld  := TimeNew;
+  TimeNew  := SDL_GetTicks();
+  TimeSkip := (TimeNew-TimeOld) / cSDLCorrectionRatio;
+
+  {$IFDEF DebugDisplay}
+    Writeln( 'TimeNew       : ' + inttostr(trunc(TimeNew)) );
+    Writeln( 'CountSkipTime : ' + inttostr(trunc(TimeSkip)) );
+  {$ENDIF}
+end;
+
+
+procedure CountMidTime;
+begin
+  TimeMidTemp := SDL_GetTicks();
+  TimeMid     := (TimeMidTemp - TimeNew) / cSDLCorrectionRatio;
+
+  {$IFDEF DebugDisplay}
+  Writeln( 'TimeNew      : ' + inttostr(trunc(TimeNew)) );
+  Writeln( 'CountMidTime : ' + inttostr(trunc(TimeMid)) );
+  {$ENDIF}
+end;
+
+
+function TTime.GetTime: real;
+begin
+  Result   := SDL_GetTicks() / cSDLCorrectionRatio;
+
+  {$IFDEF DebugDisplay}
+  Writeln( 'GetTime : ' + inttostr(trunc(Result)) );
+  {$ENDIF}
+end;
+
+
+end.