Question

我正在使用Swift和SpriteKit开发游戏。我希望背景在某个分数上发生变化。这是代码：

 class GameScene: SKScene {
 var bg = SKSpriteNode()

override func didMoveToView(view: SKView) {

   makeBg()
}

func makeBg() {

    let bgTexture = SKTexture(imageNamed: "img/bg.png")
    let moveBg = SKAction.moveByX(-bgTexture.size().width, y: 0, duration: 9)
    let replaceBg = SKAction.moveByX(bgTexture.size().width, y: 0, duration:0)
    let animateBg = SKAction.repeatActionForever(SKAction.sequence([moveBg,   replaceBg]))


    for var i: CGFloat = 0; i<3; i++ {
        let bg = SKSpriteNode(texture: bgTexture)
        bg.name = "background"
        bg.position = CGPoint(x: bgTexture.size().width/2 + bgTexture.size().width * i, y: CGRectGetMidY(self.frame))
        bg.size.height = self.frame.height
        bg.runAction(animateBg)
        addChild(bg)
    }
}     
   override func touchesBegan(touches: Set<UITouch>, withEvent event:    UIEvent?) {
     if score == 0 {
               bg.texture = SKTexture(imageNamed: "img/bg.png")
            } else if score == 3 {
                bg.texture = SKTexture(imageNamed: "img/bgOri.png")
                }
 }

但是图像不会改变......错误在哪里？

Answer 1

因此，您可以在for循环中创建的所有节点上更改纹理：

session_start();

require_once '../../lib/mailer/PHPMailerAutoload.php';

 $errors = [];

 if(isset($_POST['fname'], $_POST['lname'], $_POST['email'], $_POST['contactno'], $_POST['message'])){
  $fields = [
    'fname'=>$_POST['fname'],
    'lname'=>$_POST['lname'],
    'email'=>$_POST['email'],
    'contactno'=> $_POST['contactno'],
    'message'=> $_POST['message']
    ];

    foreach($fields as $field => $data){
      if (empty($data)){
        $errors[]='The ' . $field . ' field is required.';
      }
    }

    if(empty($errors)){
      $m = new PHPMailer;

      $m->isSMTP();
      $m->SMTPAuth = true;

      $m->Host = 'smtp.gmail.com';
      $m->Username = 'icyraud@gmail.com';
      $m->Password = 'giantboq1';
      $m->SMTPSecure = 'ssl';
      $m->Port = 465;

      $m->isHTML();

      $m->Subject = 'Contact Form Submitted';
      $m->Body = 'From: ' . $fields['fname'] .' '. $fields['lname']. ' (' . $fields['email'] . ')<p>' . $fields['message'] . '</p>';

      $m->FromName = 'Contact';
      $m->AddAddress('icyraud@gmail.com','JDGS Company');

      if($m->send()){
        header('Location: thanks.php');
        die();
      } else{
        $errors[]= 'Sorry, could not send email. Try again later.';
      }
    }

} else{
$errors[] = 'Something went wrong';
}

 $_SESSION['errors'] = $errors;
 $_SESSION['fields'] = $fields;
 header('Location: contact-us.php');

请注意，您不需要在GameScene中定义bg属性来实现此目的。

Swift SpriteKit改变背景图像得分

1 个答案: