iPhone 開發筆記18: cocos2d MultipleTouch

A. 新增 cocos2d Application Project: boardGame5

B. HelloWorldScene.h
// When you import this file, you import all the cocos2d classes
#import "cocos2d.h"

// HelloWorld Layer                 //@add
@interface HelloWorld : CCLayer <CCTargetedTouchDelegate>

// returns a Scene that contains the HelloWorld as the only child
+(id) scene;

@end

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C. boardGame5AppDelegate.m

- (void) applicationDidFinishLaunching:(UIApplication*)application
{
    CC_DIRECTOR_INIT();
   
    //@add
    // Init the window
    window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
   
    //@add
    [window setUserInteractionEnabled:YES]; 
    [window setMultipleTouchEnabled:YES];
    ....
}

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D. HelloWorldScene.m

// on "init" you need to initialize your instance
-(id) init
{
    // always call "super" init
    // Apple recommends to re-assign "self" with the "super" return value
    if( (self=[super init] )) {
       
        //@add
        self.isTouchEnabled = YES;  
        // @add
        [[CCTouchDispatcher sharedDispatcher]
         addTargetedDelegate:self priority:0 swallowsTouches:YES];
    ....
    }
    return self;
}


// @add
-(BOOL) ccTouchBegan:(UITouch*)touch withEvent:(UIEvent*)event
{   
    CGPoint touchLocation=[touch locationInView:[touch view]];
    touchLocation=[[CCDirector sharedDirector] convertToGL:touchLocation];
    CGPoint nodePosition = [self convertToNodeSpace: touchLocation];
   
    int t_x = nodePosition.x;
    int t_y = nodePosition.y;    

    ....
   
    return YES;
}