Question

将Objective-C代码转换为Swift时遇到了一个问题。我在SKScene子类中添加了两个精灵。第一个精灵直接添加到场景中，第二个精灵是第一个节点的子节点。当我点击任一精灵时，游戏应该记录精灵的名字。这在Objective-C版本中按预期工作，但无论我点击哪个节点，Swift版本都会记录“sprite1”。

目标C

声明精灵并将它们添加到场景

    CGSize size = CGSizeMake(32, 32);
    SKSpriteNode *sprite1 = [SKSpriteNode spriteNodeWithColor:[SKColor blueColor] size:size];
    sprite1.name = @"sprite1";
    sprite1.position = CGPointMake(100, 100);
    [self addChild:sprite1];

    SKSpriteNode *sprite2 = [SKSpriteNode spriteNodeWithColor:[SKColor redColor] size:size];
    sprite2.name = @"sprite2";
    sprite2.position = CGPointMake(150, 100);
    [sprite1 addChild:sprite2];

触控处理程序

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

    for (UITouch *touch in touches) {
        CGPoint location = [touch locationInNode:self];
        SKNode *node = [self nodeAtPoint:location];
        if ([node.name isEqualToString:@"sprite2"]) {
            NSLog(@"sprite2");
        }
        if ([node.name isEqualToString:@"sprite1"]) {
            NSLog(@"sprite1");
        }
    }
}

夫特

声明精灵并将它们添加到场景

    let size = CGSizeMake(32, 32)
    let sprite1 = SKSpriteNode(color: SKColor.blueColor(), size: size)
    sprite1.name = "sprite1"
    sprite1.position = CGPointMake(100, 100)

    self.addChild(sprite1)

    let sprite2 = SKSpriteNode(color: SKColor.redColor(), size: size)
    sprite2.name = "sprite1"
    sprite2.position = CGPointMake(150, 100)

    sprite1.addChild(sprite2)

触控处理程序

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let location = touch.locationInNode(self)
        let node = self.nodeAtPoint(location)
        if (node.name == "sprite2") {
            println("sprite2")
        }
        if (node.name == "sprite1") {
            println("sprite1")
        }

    }
}

Answer 1

您正在将sprite2.name设置为“sprite1。”

let size = CGSizeMake(32, 32)
    let sprite1 = SKSpriteNode(color: SKColor.blueColor(), size: size)
    sprite1.name = "sprite1"
    sprite1.position = CGPointMake(100, 100)

    self.addChild(sprite1)

    let sprite2 = SKSpriteNode(color: SKColor.redColor(), size: size)
    sprite2.name = "sprite1"  //here
    sprite2.position = CGPointMake(150, 100)

    sprite1.addChild(sprite2)

将其更改为“sprite2。”

let size = CGSizeMake(32, 32)
    let sprite1 = SKSpriteNode(color: SKColor.blueColor(), size: size)
    sprite1.name = "sprite1"
    sprite1.position = CGPointMake(100, 100)

    self.addChild(sprite1)

    let sprite2 = SKSpriteNode(color: SKColor.redColor(), size: size)
    sprite2.name = "sprite2"
    sprite2.position = CGPointMake(150, 100)

    sprite1.addChild(sprite2)

在Swift中实现SpriteKit tap处理程序时出现意外行为

1 个答案: