Question

I am creating a game where the user must tap the screen faster to allow them to go faster in game, however I have encountered some problems. I have made the game so it calculates the amount of taps per minute from the users last tap and their current tap, however this method seems to be jerky and does not work too well. I also cannot work out another way to do it, so that the when they don’t tap at all, it slows down.

How would I go about creating this mechanism for the game where the faster the user taps, the faster the game goes, and if they don’t tap at all it slows to a stop.

Thanks

Here is a snippet of what I have so far, calculating the Taps Per Minute (TPM) of the user. (This is in the on touch method). I am currently passing the TPM into an update method which moves the background by TPM/100 each time it updates (it’s running at 30FPS)

 if (thisTouch == 0 || lastTouch == 0) {
            Log.d("info","First Touch");
            thisTouch = lastTouch = System.currentTimeMillis();
        } else {
            Log.d("d","touch");
            thisTouch = System.currentTimeMillis();

            long difference = thisTouch - lastTouch;

            TPM = (int)((1000*60)/difference);

            lastTouch = thisTouch;
        }

I would like to know how I can change this so that the game speeds up when they click faster, and then slows when they do not touch the screen.

Answer 1

Maybe you could do something like this:

• Create a PriorityQueue< Long>
• Whenever the user taps the screen, add (currentTime + someTimeOut) to the queue
• Whenever you are going to check the current speed (eg size of queue), first remove all elements > currentTime.

Don’t forget to add appropriate thread safety measures if you do something like this of course.