Question

我试图在点击一半屏幕后更改节点的位置。我有三个确切的点，我希望节点在它们之间移动。为了检测节点的位置，我创建了BOOL＆＃39; s。

我的代码无法正常工作。如果节点位于第3点，我点击屏幕左侧，它将转到第1点而不是第2点。如果我将更新方法更改为Node.position.x ==（self.frame.size.width / 2），则节点仅在第1点和第3点之间移动。

@implementation MyScene {
BOOL Point1;
BOOL Point2;
BOOL Point3;
}

-(void)Node {
Node = [SKSpriteNode spriteNodeWithTexture:Node1];
Node.size = CGSizeMake(50, 50);
Node.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 3);
Node.zPosition = 4;

[self addChild:Node];
} 

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

UITouch *touch = [touches anyObject];
CGPoint touchLocation = [touch locationInNode:self];

// If left half of the screen is touched
if (touchLocation.x < self.size.width / 2) {

    if(Point2 == YES){

        Node.position = CGPointMake(self.frame.size.width / 3.5, self.frame.size.height / 3);
    }

    if(Point3 == YES){

        Node.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 3);
    }

}

// If right half of the screen is touched
if (touchLocation.x > self.size.width / 2) {

    if(Point1 == YES){

        Node.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 3);
    }

    if(Point2 == YES){

        Node.position = CGPointMake(self.frame.size.width / 1.4, self.frame.size.height / 3);
    }

}

}

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

if(Node.position.x >= (self.frame.size.width / 1.4)){

Point1 = true;
Point2 = false;
Point3 = false;

}

else if(Node.position.x >= (self.frame.size.width / 2)){

Point1 = false;
Point2 = true;
Point3 = false;

}

else if(Node.position.x >= (self.frame.size.width / 3.5)){

Point1 = false;
Point2 = false;
Point3 = true;

} }

Answer 1

更新方法中的逻辑错误。每当Node的位置大于self.frame.size.width / 2 Point2为真。以下是UpdateMethod的工作代码：

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

if(Human.position.x > (self.frame.size.width / 1.6)){

    Point1 = false;
    Point2 = false;
    Point3 = true;
}

else if(Human.position.x == (self.frame.size.width / 2)){

    Point1 = false;
    Point2 = true;
    Point3 = false;
}

else if(Human.position.x < (self.frame.size.width / 3.0)){

    Point1 = true;
    Point2 = false;
    Point3 = false;
}
}

SpriteKit触摸后更改位置

1 个答案: