迅速拖放與碰撞

我是新來的Swift。我試圖弄清楚如何拖放和圖像到盒子上並檢測碰撞發生的時間。當我讓重力和動畫在圖像上作用時，它會檢測到碰撞。但是，當我將圖像拖到框中時，它不會檢測到它。我將不勝感激任何幫助！謝謝。迅速拖放與碰撞

這裏是我想要使用的代碼：

import UIKit 
import AVFoundation 


class Punc2ViewController: UIViewController, UICollisionBehaviorDelegate { 

    var player2:AVAudioPlayer = AVAudioPlayer() 
    var error : NSError? = nil 
    var location = CGPoint(x: 0, y: 0) 

    var animator: UIDynamicAnimator! 
    var gravity: UIGravityBehavior! 
    var collision: UICollisionBehavior! 


    @IBOutlet weak var period: UIImageView! 


    override func viewDidLoad() { 
     super.viewDidLoad() 

     period.center = CGPointMake(650, 100) 
     view.addSubview(period) 

     let barrier = UIView(frame: CGRect(x: 600, y: 200, width: 130, height: 20)) 
     barrier.backgroundColor = UIColor.redColor() 
     view.addSubview(barrier) 

     animator = UIDynamicAnimator(referenceView: view) 
     //gravity = UIGravityBehavior(items: [period]) 
     //animator.addBehavior(gravity) 

     collision = UICollisionBehavior(items: [period]) 
     collision.collisionDelegate = self 
     // add a boundary that has the same frame as the barrier 
     collision.addBoundaryWithIdentifier("barrier", forPath: UIBezierPath(rect: barrier.frame)) 
     collision.translatesReferenceBoundsIntoBoundary = true 
     animator.addBehavior(collision) 

     collision.action = { 


     } 
    } 

    func collisionBehavior(behavior: UICollisionBehavior!, beganContactForItem item: UIDynamicItem!, withBoundaryIdentifier identifier: NSCopying!, atPoint p: CGPoint) { 
     println("Boundary contact occurred - \(identifier)") 
    } 

    @IBAction func handlePan(recognizer:UIPanGestureRecognizer) { 
     let translation = recognizer.translationInView(self.view) 
     if let view = recognizer.view { 
      view.center = CGPoint(x:view.center.x + translation.x, 
       y:view.center.y + translation.y) 
     } 
     recognizer.setTranslation(CGPointZero, inView: self.view) 

    } 
}

來源

2015-05-29 Al Viera

嘗試使用，如果CGRectIntersectsRect返回如果2個對象（它們的幀）相交，則爲true –

Sprite套件對於此類遊戲會更好 –

Abdulah：感謝您提供這種簡單優雅的解決方案。 CGRectIntersectsRect完美地工作。我同意Sprite套件可以更好地工作，但我只需要簡單的拖放操作，而不是完整的遊戲。再次感謝你的幫助！ –

使用

if CGRectIntersectsRect(imageview.frame,imageview2.frame) { 
//do something 
}

它返回true，如果兩個對象（其幀）相交

來源

2015-06-02 08:22:00

迅速拖放與碰撞

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