-3

I've been using objective-c and sprite kit for a while, but always used one enormous class for everything. For this app, I need to have multiple classes. How can I have a class, lets say named MySprite.m, which would have all the code for the sprite, and the be able to add the sprite or call methods inside MySprite.m in GameScene.m?

jscs
  • 63,694
  • 13
  • 151
  • 195
TheCommonGiraffe
  • 23
  • 2
  • 7
  • You should find a good book or a series of online tutorials. Have a look at [Good resources for learning ObjC](http://stackoverflow.com/q/1374660). The Big Nerd Ranch books are excellent, and lots of people like the Stanford iOS course on iTunes U. Good luck! – jscs Jan 01 '15 at 19:39

1 Answers1

0

Here's an example of how to create and call methods in a new class:

1) Create a new class called MySprite with an init method 

#import "MySprite.h"

@implementation MySprite

- (id) init {
    if (self = [super init]) {
        // Add initialization code here, as needed
    }
    return self;
}

- (void) addSprite {
    // Do something here

}

@end

2) In MySprite.h, declare methods and properties

#import <SpriteKit/SpriteKit.h>

@interface MySprite : NSObject

// Declare this if you want to add nodes to the scene in your SKScene subclass
@property (nonatomic, weak) SKScene *scene;

// Declare methods to be called externally
- (void) addSprite;

@end

3) In GameScene.m, allocate and initialize a MySprite instance

MySprite *mySprite = [[MySprite alloc] init];
mySprite.scene = self;

// Call a MySprite method
[mySprite addSprite];
0x141E
  • 12,613
  • 2
  • 41
  • 54
  • Thanks! I must say that's probably the best answer I've ever gotten – TheCommonGiraffe Jan 01 '15 at 01:52
  • I just have one problem. When I try to add the sprite inside addSprite method using [self addChild:sprite];, i get an error. I know that the error is because I'm using that function outside the GameScene.m file, but how can I get around this? – TheCommonGiraffe Jan 01 '15 at 06:01
  • @TheCommonGiraffe use [self.scene addChild:sprite]; – 0x141E Apr 04 '15 at 09:29