Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Build a Game with Sprite Kit Particle Systems and Keeping Score Finishing Touches

Posted by Rodrigo Larin
Rodrigo Larin
1,864 Points

Does anybody advice me how to enable just one touch instead of multitouch for shooting the projectiles on this assigment

I have searched different ways of how to let use one touch instead of multi touch for shooting the fire balls, but i have not found anything

1 Answer

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

I havent tested it but instead of looping over the touches try just getting one of them using the anyObject method of NSSet:

replace:

for (UITouch *touch in touches) {

            CGPoint position = [touch locationInNode:self];
            [self shootProjectileTowardsPosition:position];

        }

with 

UITouch *touch = [touches anyObject];
 CGPoint position = [touch locationInNode:self];
[self shootProjectileTowardsPosition:position];
Rodrigo Larin
Rodrigo Larin
1,864 Points

Thanks for the response, I tried it without success.

Michael Blazek
Michael Blazek
162 Points

Rodrigo Post your code that is not working because Stone's suggestion should work.