How do I correctly use allContactedBodies?

Question

I want to use allContactedBodies instead of didBeginContact & didEndContact.

When I do :

NSLog(@\"%@\", node.physicsBody.allContactedBodies );
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Answer 1

If you read the SKPhysicsBody Class Reference, you should have seen the format for this command.

- (NSArray *)allContactedBodies

The return value is:

An array of SKPhysicsBody objects that this body is in contact with.

Having said that, you would use this code to accomplish what you are asking:

NSArray *tempArray = [yourNode.physicsBody allContactedBodies];
for(SKNode *object in tempArray)
{
    if([object.name isEqualToString:@"theBall"])
        NSLog(@"found the ball");
}

FYI - You will have to run this code in the update: method. This means your app will spend precious processing time every single frame checking for a contact. It would make much more sense to stick with the didBeginContact: instead.