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Programming a Reaction Time

Started by watermelonChris Aug 11, 2011 at 8:22 PM 1 replies 1.4k views

Original Post

Aug 11, 2011 at 8:22 PM

Based on the player's cordinates on screen I'm adjusting a 'angle'... However I'd like to it be 1 second or so behind the actual cordinates..

I'm using XNA so the game run's at 60 fps, I was thinking of creating a counter of creating an array of 60 elements

And on each frame
> downshift all elements
>add the current cordinate to the first element
>process the last element

Any other ideas?

inavat

Aug 11, 2011 at 8:59 PM

Based on the player's cordinates on screen I'm adjusting a 'angle'... However I'd like to it be 1 second or so behind the actual cordinates..

I'm using XNA so the game run's at 60 fps, I was thinking of creating a counter of creating an array of 60 elements

And on each frame
> downshift all elements
>add the current cordinate to the first element
>process the last element

Any other ideas?

Implementing a ring buffer (i.e. circular queue) would be much more efficient than shifting.

watermelonChris

Author

watermelonChris

Aug 19, 2011 at 9:03 AM

For future reference: I got it working like this.


 if (timerCountGame >= 60)
 {
 enemyBullet[0] = new Rectangle(
 Convert.ToInt32(playerPositionHistory[0].X)
 ,Convert.ToInt32(playerPositionHistory[0].Y)
 , 80, 80);
 
 playerPositionHistory.RemoveAt(0);
 
 }
 
 playerPositionHistory.Add(new Vector2(player1Rec.X, player1Rec.Y));

The timer is just there as a 'warmup' but it also effects the 'reaction time' since there are 60 updates a second theres a 1 second reaction time.

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