CODEWITHSUNDEEP
iosxcode5sprite-kit
Ashwin
Ashwin

Reputation: 35

Sprite kit - naming repeated objects

Using apple spritekit, how can I uniquely identify nodes if, say 20 nodes, they have same art work and are to be placed randomly on the screen? Is there a faster way like in cocos2d there is a"tag" function to identify?

Upvotes: 2

Views: 209

Answers (3)

Gabriel.Massana
Gabriel.Massana

Reputation: 8225

I'm usually using the property name:

SKNode *myNode = [[SKNode alloc]init];
myNode.name = @"uniqueName";
[self addChild:myNode];

In the SKScene, to recovery the node you can do:

[self childNodeWithName:@"uniqueName"];  // self is SKScene

If for some reason you don't want to use name, you can always subclass one SKNode and add your personal unique identifier:

MySpriteNode.h

@interface MySpriteNode : SKSpriteNode

@property (nonatomic, strong) NSString *personalIdentifier;

@end

and MySpriteNode.m

#import "MySpriteNode.h"

@implementation MySpriteNode

@end

with this second option you can:

for (MySpriteNode *sprite in [self children]) personalIdentifier
    {
        if ([sprite.personalIdentifier isEqualToString:@"something"])
        {
            //do something
        }
    }

EDIT 1:

Try to follow these tutorials, I really think they are great. I learned a lot with them:

Upvotes: 2

Logan
Logan

Reputation: 53142

I'm not the most proficient with sprites, but is this something you're looking for?

Save:

NSArray * nodesArray; // some array of nodes.
for (int x = 0; x < nodesArray.count; x++) {
    SKNode * node = nodesArray[x];
    node.name = [NSString stringWithFormat:@"%i", x];
}

Retrieve:

int nodeToRetrieveTag = 2; // or whatever
SKNode* nodeToRetrieve = [self.scene childNodeWithName:[NSString stringWithFormat:@"%i", nodeToRetrieveTag]];

Upvotes: 2

AndrewShmig
AndrewShmig

Reputation: 4923

Are you looking for enumerateChildNodesWithName:usingBlock: method?

Upvotes: 0

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