//This method call updates the sprite effect.
//Note, it does this by waiting for the sprite update task to finish,
//copying the sprite positions, then starting the sprite update again.
//The sprite update runs while the drawing/app loop is running
public void UpdateEffect(IState state)
{
//wait for the previous frame update to finish (it may still be running)...
updateTask.WaitForCompletion();
//Note: at this point, the thread task is *not* active, so it is safe to
//read/write the data used by the thread. Doing so before WaitForCompletion
//would potentially be unsafe.
//store the inputPosition into the buffer, so the task can access it.
inputPositionBuffer = inputPosition;
//copy out the updated position data...
//note, the update task isn't active when this is called
//otherwise the data may be still being written to by the thread task
//(The thread task writes directly to 'spritePosition')
this.spriteElement.SetSpritePositions(spritePosition);
this.windowSize = new Vector2(state.Application.WindowWidth, state.Application.WindowHeight);
//now, start the process up again.
//being a new update task...
//(this task could be split up, to help the xbox out even more)
if (!runSingleThreaded)
{
//make sure the WaitCallback is assigned!
updateTask = state.Application.ThreadPool.QueueTask(this, null);
//now, at some point, the PerformAction method below will be called,
//usually from another thread.
//It's quite possible that the method has already been called and
//has finished already by this point.
}
else
{
UpdateSprites(); //single thread update
}
}
//This method call updates the sprite effect.
//Note, it does this by waiting for the sprite update task to finish,
//copying the sprite positions, then starting the sprite update again.
//The sprite update runs while the drawing/app loop is running
public void UpdateEffect(IState state)
{
//wait for the previous frame update to finish (it may still be running)...
updateTask.WaitForCompletion();
//Note: at this point, the thread task is *not* active, so it is safe to
//read/write the data used by the thread. Doing so before WaitForCompletion
//would potentially be unsafe.
//store the inputPosition into the buffer, so the task can access it.
inputPositionBuffer = inputPosition;
//copy out the updated position data...
//note, the update task isn't active when this is called
//otherwise the data may be still being written to by the thread task
//(The thread task writes directly to 'spritePosition')
this.spriteElement.SetSpritePositions(spritePosition);
this.windowSize = new Vector2(state.Application.WindowWidth, state.Application.WindowHeight);
//now, start the process up again.
//being a new update task...
//(this task could be split up, to help the xbox out even more)
if (!runSingleThreaded)
{
//make sure the WaitCallback is assigned!
updateTask = state.Application.ThreadPool.QueueTask(this, null);
//now, at some point, the PerformAction method below will be called,
//usually from another thread.
//It's quite possible that the method has already been called and
//has finished already by this point.
}
else
UpdateSprites(); //single thread update
}
