Qt Reference Documentation

Enemy.qml Example File

demos/mobile/quickhit/plugins/LevelTwo/qml/Enemy.qml
 /****************************************************************************
 **
 ** Copyright (C) 2015 The Qt Company Ltd.
 ** Contact: http://www.qt.io/licensing/
 **
 ** This file is part of the QtDeclarative module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:BSD$
 ** You may use this file under the terms of the BSD license as follows:
 **
 ** "Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions are
 ** met:
 **   * Redistributions of source code must retain the above copyright
 **     notice, this list of conditions and the following disclaimer.
 **   * Redistributions in binary form must reproduce the above copyright
 **     notice, this list of conditions and the following disclaimer in
 **     the documentation and/or other materials provided with the
 **     distribution.
 **   * Neither the name of The Qt Company Ltd nor the names of its
 **     contributors may be used to endorse or promote products derived
 **     from this software without specific prior written permission.
 **
 **
 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 import QtQuick 1.0

 Image {
     id: enemy
     objectName: "enemy"
     smooth:true
     opacity: 0 // 0=hidden by default
     fillMode:Image.PreserveAspectFit
     source:"file:/"+LevelPlugin.pictureRootPath()+"enemy1.png"

     property int enemySpeed: LevelPlugin.enemySpeed()

     function pause(doPause) {
         if (doPause) {
             upToDownAnim.pause()
             rightLeftAnim.pause()
         } else {
             upToDownAnim.resume()
             rightLeftAnim.resume()
         }
     }

     function startMovingAnim() {
         upToDownAnim.restart()
         rightLeftAnim.restart()
     }

     // Right-left animation
     SequentialAnimation {
     id: rightLeftAnim
     loops: Animation.Infinite
     NumberAnimation { target:enemy; property:"x";
     to:gameArea.width - enemy.width; easing.type: Easing.OutQuad; duration: 3000 }
     NumberAnimation { target:enemy; property:"x"; to:0; easing.type: Easing.OutQuad; duration: 3000 }
     }

     // Up to down animation
     SequentialAnimation {
     id: upToDownAnim
     PropertyAnimation { target:enemy; property:"y"; to: gameArea.height;
         easing.type: Easing.Linear; duration: enemy.enemySpeed }
     PropertyAction { target: enemy; properties: "opacity"; value: 0 }
     }
 }