触摸期间未检测到自定义SKSpriteNode [英] Custom SKSpriteNode not detected during touch

问题描述

在学习SpriteKit时，我正在尝试制作一款小型冒险游戏。我正在创建一个英雄，并将其添加到场景中，然后，在 touchesBegan：期间，我检测到触摸是否源自英雄，并采取相应的操作。

In learning SpriteKit, I am trying to make a small adventure game. I am creating a hero, and adding it to the scene, and then later, during touchesBegan:, I detect if the touch originated on the hero, and take actions accordingly.

如果我将英雄添加为 SKSpriteNode ，则触摸会检测到他。如果我将他添加为 SKSpriteNode 的子类，则触摸不会！添加的区别：

If I add the hero as a SKSpriteNode the touch detects him. If I add him as a subclass of SKSpriteNode the touch does not! The difference in adding:

_heroNode = [SKSpriteNode spriteNodeWithImageNamed:@"hero.png"];

vs

_heroNode = [[ADVHeroNode alloc] init];

init如下所示：

- (id) init {
    if (self = [super init]) {

        self.name = @"heroNode";
        SKSpriteNode *image = [SKSpriteNode spriteNodeWithImageNamed:@"hero.png"];
        [self addChild:image];
    }
    return self;
}

将英雄作为SKSpriteNode的子类添加工作的意义在于它被添加到现场，但触摸没有发现他。我的 touchesBegan：看起来像这样：

Adding the hero as a subclass of SKSpriteNode works in the sense that it is added to the scene, but the touch doesn't detect him. My touchesBegan: looks like this:

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    /* Called when a touch begins */

    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInNode:self];
    SKNode *node = [self nodeAtPoint:location];
    if (YES) NSLog(@"Node name where touch began: %@", node.name);

    //if hero touched set BOOL
    if ([node.name isEqualToString:@"heroNode"]) {
        if (YES) NSLog(@"touch in hero");
        touchedHero = YES;
    }
}

令人沮丧的是，这段代码在添加直线时效果很好up SKSpriteNode ，而不是我自己的子类。有什么建议吗？

Frustratingly, this code works just fine when adding a straight up SKSpriteNode, and not my own subclass of it. Any suggestions?

推荐答案

以下是一些继承Hero的示例方法

Here are some example ways to subclass your Hero

SKNode

子类 SKNode 此方法需要您的节点监控触摸，因此self.userInteractionEnabled属性。

Subclass an SKNode this method requires your node to monitor for touches, hence the self.userInteractionEnabled property.

@implementation HeroSprite

- (id) init {
    if (self = [super init]) {
        [self setUpHeroDetails];
        self.userInteractionEnabled = YES;
    }
    return self;
}

-(void) setUpHeroDetails
{
    self.name = @"heroNode";
    SKSpriteNode *heroImage = [SKSpriteNode spriteNodeWithImageNamed:@"Spaceship"];
    [self addChild:heroImage];
}


-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint locationA = [touch locationInNode:self];
    CGPoint locationB = [touch locationInNode:self.parent];
    NSLog(@"Hit at, %@ %@", NSStringFromCGPoint(locationA), NSStringFromCGPoint(locationB));
}

@end

SKSpriteNode

另一种更简单的方法，如果您只想继承 SKSpriteNode 。这将与您习惯使用的基本相同（在您想要继承Hero之前）。所以你的touchesBegan，在你的问题中设置将起作用。

The other "easier" way, if you just want to subclass a SKSpriteNode. This will work essentially the same as you are use to (before you wanted to subclass your Hero). So your touchesBegan, as set up in your question will work.

@implementation HeroSprite

- (id) init {
    if (self = [super init]) {
        self = [HeroSprite spriteNodeWithImageNamed:@"Spaceship"];
        [self setUpHeroDetails];

    }
    return self;
}

-(void) setUpHeroDetails {
    self.name = @"heroNode";
}

@end

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