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Process system events once per timestep interval #41

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27 changes: 13 additions & 14 deletions src/Game.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -299,20 +299,6 @@ private void Tick(bool processEvents)
// Wait for the swapchain before event processing to minimize input latency.
GraphicsDevice.WaitForSwapchain(MainWindow);

if (processEvents)
{
// Now that we are going to perform an update, let's handle SDL events.
// We'll process the system events immediately, and the input events before updating.
GatherSDLEvents();
ProcessSystemEvents();
}

// Quit event came in, bail immediately.
if (QuitRequested)
{
return;
}

// Do not let the accumulator go crazy.
var maxUpdateTime = FramePacingSettings.MaxUpdatesPerTick * FramePacingSettings.Timestep;
if (AccumulatedUpdateTime > maxUpdateTime)
Expand All @@ -337,6 +323,19 @@ private void Tick(bool processEvents)
// Step once on the timestep interval.
if (firstIteration)
{
if (processEvents)
{
// Process system events once per timestep interval.
// SDL events were already gathered above.
ProcessSystemEvents();
}

// Quit event came in, bail immediately.
if (QuitRequested)
{
return;
}

Step();
firstIteration = false;
}
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