Question

I need to schedule an event in cosos2D with various arguments, I have tried searching on net but did not able to get any solution out of it. I can use

[self schedule:@selector(move:) interval:0.3];

but How should I pass arguments to it like:

[self schedule:@selector(move:withPoint:) interval:0.3];

to access this function.

-(void)move:(id)object withPoint:(CGPoint)point{
}

Answer 1

You should use some kind of enclosure (an array/dictionary, a struct, etc.) in an instance variable to achieve this. For example:

placeholderDict = [NSDictionary dictionaryWithObjectsAndKeys:
    [NSValue valueWithCGPoint:point], @"point",
    theObject, @"object",
    nil];
[self schedule:@selector(moveWithPointWrapper) interval:0.3];

- (void)moveWithPointWrapper
{
    CGPoint pt = [(NSValue *)[placeholderDict objectForKey:@"point"] CGPointValue];
    id obj = [placeholderDict objectForKey:@"object"];
    [self move:obj withPoint:pt];
}

Hope this helps.

EDIT: as @learncocos2d pointed out, it’s also sufficient to create single instance variables (the object, the CGPoint…) and you don’t even need the overhead of the dictionary.