#include <C4Application.h>

Inheritance diagram for C4ApplicationGameTimer:

Collaboration diagram for C4ApplicationGameTimer:

Public Member Functions
	C4ApplicationGameTimer ()

void	SetGameTickDelay (uint32_t iDelay)

bool	Execute (int iTimeout, pollfd *) override

bool	IsLowPriority () override

Detailed Description

Definition at line 109 of file C4Application.h.

Constructor & Destructor Documentation

◆ C4ApplicationGameTimer()

C4ApplicationGameTimer::C4ApplicationGameTimer ( )

Definition at line 886 of file C4Application.cpp.

         : CStdMultimediaTimerProc(26),
         tLastGameTick(C4TimeMilliseconds::NegativeInfinity)
 {
 }

Member Function Documentation

◆ Execute()

bool C4ApplicationGameTimer::Execute	(	int	iTimeout,
		pollfd *
	)

override

Definition at line 913 of file C4Application.cpp.

 {
     // Check timer and reset
     if (!CheckAndReset()) return true;
     C4TimeMilliseconds tNow = C4TimeMilliseconds::Now();
     // Execute
     if (tNow >= tLastGameTick + iExtraGameTickDelay || Game.GameGo)
     {
         if (iGameTickDelay)
             tLastGameTick += iGameTickDelay;
         else
             tLastGameTick = tNow;
  
         // Compensate if things get too slow
         if (tNow > tLastGameTick + iGameTickDelay)
             tLastGameTick += (tNow - tLastGameTick) / 2;
  
         Application.GameTick();
     }
     // Draw
     if (!Game.DoSkipFrame)
     {
         C4TimeMilliseconds tPreGfxTime = C4TimeMilliseconds::Now();
  
         Application.Draw();
  
         // Automatic frame skip if graphics are slowing down the game (skip max. every 2nd frame)
         Game.DoSkipFrame = Game.Parameters.AutoFrameSkip && (tPreGfxTime + iGameTickDelay < C4TimeMilliseconds::Now());
     } else {
         Game.DoSkipFrame=false;
     }
     return true;
 }

References Application, C4GameParameters::AutoFrameSkip, C4Game::DoSkipFrame, C4Application::Draw(), Game, C4Game::GameGo, C4Application::GameTick(), C4TimeMilliseconds::Now(), and C4Game::Parameters.

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◆ IsLowPriority()

bool C4ApplicationGameTimer::IsLowPriority ( )

override

Definition at line 947 of file C4Application.cpp.

947 { return true; }

◆ SetGameTickDelay()

void C4ApplicationGameTimer::SetGameTickDelay ( uint32_t iDelay )

Definition at line 892 of file C4Application.cpp.

 {
     // Remember delay
     iGameTickDelay = iDelay;
     // Smaller than minimum refresh delay?
     if (iDelay < uint32_t(Config.Graphics.MaxRefreshDelay))
     {
         // Set critical timer
         SetDelay(iDelay);
         // No additional breaking needed
         iExtraGameTickDelay = 0;
     }
     else
     {
         // Set critical timer
         SetDelay(Config.Graphics.MaxRefreshDelay);
         // Slow down game tick
         iExtraGameTickDelay = iDelay;
     }
 }

References Config, C4Config::Graphics, and C4ConfigGraphics::MaxRefreshDelay.

Referenced by C4Application::SetGameTickDelay().

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The documentation for this class was generated from the following files: