userInteractionEnabled属性是否在SpriteKit节点上正常工作?

时间:2014-03-10 04:44:15

标签: objective-c sprite-kit sklabelnode

我有以下简单的代码:

//
//  BGMyScene.m
//  Test1
//
//  Created by AndrewShmig on 3/10/14.
//  Copyright (c) 2014 Bleeding Games. All rights reserved.
//

#import "BGMyScene.h"

@implementation BGMyScene

- (id)initWithSize:(CGSize)size
{
    if (self = [super initWithSize:size]) {
        /* Setup your scene here */

        self.backgroundColor = [SKColor colorWithRed:0.15
                                               green:0.15
                                                blue:0.3
                                               alpha:1.0];

//      first label
        SKLabelNode *myLabel = [SKLabelNode labelNodeWithFontNamed:@"Chalkduster"];
//        myLabel.userInteractionEnabled = YES;
        myLabel.text = @"Hello, World!";
        myLabel.fontSize = 30;
        myLabel.position = CGPointMake(CGRectGetMidX(self.frame),
                                       CGRectGetMidY(self.frame));
        [self addChild:myLabel];

//      second label
        SKLabelNode *myLabel2 = [SKLabelNode labelNodeWithFontNamed:@"Chalkduster"];
        // myLabel2.userInteractionEnabled = YES;
        myLabel2.text = @"Hello, World!";
        myLabel2.fontSize = 30;
        myLabel2.position = CGPointMake(100, 100);
        [self addChild:myLabel2];
    }
    return self;
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint touchLocation = [touch locationInNode:self];
    SKNode *touchedNode = [self nodeAtPoint:touchLocation];

    NSLog(@"touchLocation x: %f and y: %f", touchLocation.x, touchLocation.y);

    if (touchedNode != self) {
        NSLog(@"Removed from parent.");
        [touchedNode removeFromParent];
    }
}

- (void)update:(CFTimeInterval)currentTime
{
    /* Called before each frame is rendered */
}

@end

它的作用是创建两个SKLabelNodes并检查是否触摸了标签,如果是,则从父节点中删除它们。

奇怪的是,当我将userInteractionEnabled设置为YES时,SKLabelNode将不会收到任何触摸事件。将userInteractionEnabled保留为NO可以正常工作。

也许最好将此属性命名为userInteractionDisabled?我错过了什么吗?

1 个答案:

答案 0 :(得分:4)

您的代码正在按预期运行。

据我所知,不是SKLabelNodes接收触摸,而是SKScene有 - (void)touchesBegan ...这意味着如果你添加SKLabelNodes并将它们设置为.userInteractionEnabled = YES那么它们将会浸泡在他们到达现场之前触摸它们,因为它们在场景之上。

否则,您应该继承SKLabelNode并在自定义初始化程序中设置userInteractionEnabled。然后在SKLabelNode的子类中使用touchesBegan。