Touch Screen Target

[jkhamler]

Hi people,

I am designing an app for recreational shooters (clay pigeon/target etc.) to enable them to compete remotely.

I have a database on a remote server and I am using PHP to make SQL queries and JSON to ferry the data to and fro the handset (hopefully!!)

This is my first iPhone app and I need to implement a touch sensitive target with different areas corresponding to different scores. This is the target I have designed:

http://jonhamler.co.uk/gc99/target.png

Can anybody give me any pointers on how to approach making this? Should I overlay individual concentric circles of different sizes and apply actions to them separately? Or can I write a method that is able to record different scores on the one target image depending on where it is tapped?

Any comments, suggestions or ideas would be greatly appreciated!

Many thanks, Jon

[finefin]

you could check the distance between the touch and the center of your target.
how about that? its just a little bit of math - ever heard of Pythagoras?
http://www.purplemath.com/modules/distform.htm

[jkhamler]

Originally Posted by finefin

you could check the distance between the touch and the center of your target.
how about that? its just a little bit of math - ever heard of Pythagoras?
The Distance Formula

Ah, good idea! Yes, I have heard of Pythagorus.