instance class

[CarlosT]

Hi
not sure is this is more of a game development thing, but I would like to know if it's possible to return the class of an object instance and then see if it matches a list of possible types I am looking for.
eg.

classType = theClassOfObject(myInstance); //this is not right but its kinda what I am wanting to do?!
if (classType  == "classType_1") {
//...stuff to do it its that class
} else... //etc

I would have thought this would be possible but I just don't know what to look for. I'm sure i saw something about this somewhere else when I was looking for something else but now I can't find it! Typical! Does anyone have any *pointers

Thanks!

[ob1]

from memory you can probably use something like

if ([yourobject isa] == NSClassFromString(@"yourclassname") {};

Can't remember the exact syntax though.

[CarlosT]

Originally Posted by ob1

from memory you can probably use something like

if ([yourobject isa] == NSClassFromString(@"yourclassname") {};

Can't remember the exact syntax though.

Looks promising, I will have a look and see if that works

[CarlosT]

With your help I came across this code,

BOOL isClass = ![object1 isMemberOfClass:[object1 class]];

and adapted it to:

if (myInstance isMemberOfClass:[theClassIAmCheckingFor class]] == YES ) {
//stuff to do if it is
} else {
//stuff to do if it is NOT
}

Is this a good way of checking an instance is a member of a class?

[gabacus]

yes, there is no problem doing it this way. i think you will have to be careful with inheritance though...

for example, if you had a bunch of NSString's and NSMutableString's and you wanted to check for NSString's only, it will return YES always because NSMutableString is a subclass of NSString... hope that makes sense...

do a google search in class introspection with objective-c, there should be a lot of information out there. i think there are a few isMemberOf... isKindOf methods available to use and they each behave a little differently

[CarlosT]

Originally Posted by gabacus

yes, there is no problem doing it this way. i think you will have to be careful with inheritance though...

for example, if you had a bunch of NSString's and NSMutableString's and you wanted to check for NSString's only, it will return YES always because NSMutableString is a subclass of NSString... hope that makes sense...

do a google search in class introspection with objective-c, there should be a lot of information out there. i think there are a few isMemberOf... isKindOf methods available to use and they each behave a little differently

In my case I have a GameObject class and then a few differernt types of enemy_type_1, enemy_type_2, enemy_type_n sub classes. I am only checking for the different types of the enemies. I think it should be able to differentiate betweeen them (fingers crossed) I will have a look a them the ones you suggested, they sound more powerful/detailed.

Cheers