GameScene.qml Example File

demos/ZombieBreak/qml/GameScene.qml
 import VPlay 2.0
 import QtQuick 2.0

 import "entities"

 Scene {
   id: gameScene

   // the currently loaded level
   property variant activeLevel
   // the name of the currently loaded level
   property string activeLevelString : "Level1"
   // the sound of dying zombies, public available for the zombies
   property alias breakSound: breakSound
   // the number of zombies killed
   property int killedZombies: 0

   // state of the current game(level), ready/running/finished/failed
   state: "ready"

   // for our entities
   EntityManager {id:entityManager; entityContainer: gameScene}

   // use a high update rate for physic driven games
   PhysicsWorld {updatesPerSecondForPhysics:60}

   // background image is defined by the loaded level
   Image {source:activeLevel.background; anchors.fill:parent}

   // sound for breaking zombies
   SoundEffectVPlay {id:breakSound; source:"../assets/snd/ow.wav"}

   // left wall
   Wall {height:parent.height; anchors.right:parent.left}
   // right wall
   Wall {height:parent.height; anchors.left:parent.right}
   // ceiling
   Wall {width:parent.width; anchors.bottom:parent.top}
   // floor, if bullet hits it, the player failed the level
   Wall {
     width: gameScene.width
     anchors.top: parent.bottom
     collision.onBeginContact: {
       levelFailed()
     }
   }

   HUD {
     id: hud
     width: gameScene.width
     height: 30
     cityText: "City: " + activeLevel.city
     killedText: "Zombies killed: " + gameScene.killedZombies
   }

   Paddle {
     id: paddle
     width: 88
     height: 34
     x: parent.width/2 - width/2
     y: parent.height - height

     // drag the paddle left and right when touched
     MouseArea {
       id: paddleTouchArea
       // a bigger touch area should be used so the fingers of the user do not block the view
       width: paddle.width*2
       height: paddle.height*2
       anchors.centerIn: paddle
       // the drag should target the paddle
       drag.target: paddle
       // the paddle should move only into X direction
       drag.axis: Drag.XAxis
       // limit the minimum and maximum of the drag area, because the paddle should not move into the wall
       drag.minimumX: 0
       drag.maximumX: gameScene.width-paddle.width
       // the paddle is only enabled if the game is ready or running
       enabled: gameScene.state === "ready" || gameScene.state === "running"
       // additionally, if the game is ready to be started, we start it when the paddle is touched
       onPressed: {
         if(gameScene.state === "ready")
           startGame()
       }
     }
   }

   // the bullet, placed right above the paddle
   Bullet {
     id: bullet
     x: paddle.x + paddle.width/2
     y: paddle.y - 5
   }

   // load levels at runtime
   Loader {
     id: loader
     // this binding gets cleared when restart city is pressed
     source: activeLevelString + ".qml"
     onLoaded: {
       activeLevel = item
       item.width = gameScene.width
       item.height = gameScene.height/2
       gameScene.killedZombies = 0
       gameScene.state = "ready"
     }
   }

   // if a zombie is killed, check if all are dead
   onKilledZombiesChanged: {
     if(gameScene.killedZombies === activeLevel.maxZombies)
       levelFinished()
   }

   // button to get to Level2 after finishing Level1
   SimpleButton {
     id: nextCity
     anchors.centerIn: parent;
     text: "Next City"
     visible: false
     onClicked: {
       nextCity.visible = false
       // in multiple levels, increase the level number by 1 here and dont make it hard-coded
       gameScene.activeLevelString = "Level2"
       // this is needed, because the loader.source binding might got cleared when "Restart City" was clicked
       loader.source = gameScene.activeLevelString + ".qml"
     }
   }

   // button to restart the current level if player fails
   SimpleButton {
     id: restartCity
     anchors.centerIn: parent;
     text: "Restart City"
     visible: false
     onClicked: {
       restartCity.visible = false
       // forcing the Loader to reaload the current level
       // NOTE: this clears the loader.source binding
       loader.source = ""
       loader.source = gameScene.activeLevelString + ".qml"
     }
   }

   // text displayed when Level2 is finished
   Text {
     id: survived
     color: "red"
     text: "You survived!"
     anchors.centerIn: parent;
     visible: false
   }

   // launch bullet
   function startGame() {
     bullet.reStart(width/2,height - 50)
     state = "running"
   }

   // reset bullet and display dialog
   function levelFinished() {
     bullet.reset(width/2,height - 50)
     state = "finished"
     if(activeLevelString === "Level1")
       nextCity.visible = true
     else
       survived.visible = true
   }

   // reset bullet and display dialog
   function levelFailed() {
     bullet.reset(width/2,height - 50)
     state = "failed"
     restartCity.visible = true
   }
 }

Voted #1 for:

  • Easiest to learn
  • Most time saving
  • Best support

Develop Cross-Platform Apps and Games 50% Faster!

  • Voted the best supported, most time-saving and easiest to learn cross-platform development tool
  • Based on the Qt framework, with native performance and appearance on all platforms including iOS and Android
  • Offers a variety of plugins to monetize, analyze and engage users
FREE!
create apps
create games
cross platform
native performance
3rd party services
game network
multiplayer
level editor
easiest to learn
biggest time saving
best support
Sign up for Free and start developing right away!
I want to make Games
I want to make Apps
Game Development
Cross-Platform, Any Resolution

Use one IDE to deploy to all supported platforms, including iOS and Android, from a single code base.

Support all screen resolutions, aspect ratios and sizes with auto-adapting UI elements, smart scene scaling and memory efficient asset selection.

Learn More

V-Play ranked #1 at research2guidance cross-platform tool benchmarking 2014 by 2188 developers comparing 40 leading tools.

Multiplayer

V-Play Multiplayer supports both real-time and turn-based gameplay, so you can use it to make many different types of cross-platform multiplayer games. It's perfect for making player-vs-player games like 'Words with Friends' or games for a large amount of players, such as 'Clash of Clans'.

Learn More Video

Highscores & Achievements

The V-Play Game Network is a cross-platform gaming service that allows players around the world to compare game highscores and achievements. Players can also challenge each other across multiple platforms and share their progress on Facebook.

Learn More

QML & JavaScript

Qt Meta Language is a highly intuitive reactive language, which is super easy to learn, yet it's extremely powerful and flexible. Mix it with JavaScript to create awesome stuff, with just a few lines of code.

import QtQuick 2.0
import VPlay 2.0

GameWindow {
  Scene {
    
    SimpleButton {
      anchors.centerIn: parent
      text: "Press Me"
      onClicked: {
        console.debug("Wow you pressed me!")
      }
    }
  }
}

Learn More

Monetize & Analyze

With V-Play, you can use many 3rd party services for ads, in-app purchases, analytics and more, with just a few lines of code. All of these plugins work cross-platform, which allows you to maintain a single code base.

Learn More

Level Editor

The LevelEditor can be used during development to create and modify levels for your game, which you can then bundle in your final publishing build. Additionally, you can also integrate the in-game level editor to your published game and let your gamers create new levels.

Learn More Video

Card Game like UNO, Hearthstone or Poker

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/OneCard/OneCard.pro

Match-3 like Candy Crush Saga

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/JuicySquash/JuicySquash.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/JuicySquashAdvanced/JuicySquashAdvanced.pro

Puzzle like 2048 or Threes!

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/2048/2048.pro

Casino like Big Win Slots

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/FlaskOfRum/FlaskOfRum.pro

Side Scroller like Jetpack Joyride or Flappy Bird

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/FlappyBird/FlappyBird.pro

Tower Defense like Castle Defense or Bloons TD

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/Squaby/Squaby.pro

Falldown & Jump like Doodle Jump or Mega Jump

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/ChickenOutbreak/ChickenOutbreak.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/ChickenOutbreak2/ChickenOutbreak2.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/DoodleJump/DoodleJump.pro

Platformer like Super Mario or Lep's World

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/Platformer/Platformer.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/PlatformerWithLevelEditor/PlatformerWithLevelEditor.pro

Action like Angry Birds, Fruit Ninja, Cut the Rope

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/StackTheBoxWithCommunityEditor/StackTheBoxWithCommunityEditor.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/BalloonPop/BalloonPop.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/CarChallenge/CarChallenge.pro

Arcade like Arkanoid or Space Invaders

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/demos/ZombieBreak/ZombieBreak.pro

Community like Super Mario Maker or Minecraft

We got a demo game for you!

The V-Play SDK includes an open-source demo for this game genre. You can use its source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/examples/Squaby/Squaby.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/StackTheBoxWithCommunityEditor/StackTheBoxWithCommunityEditor.pro

<Path to V-PlaySDK>/Examples/V-Play/demos/PlatformerWithLevelEditor/PlatformerWithLevelEditor.pro

Any other Idea? let us know how we can help you

You are looking for another demo?

The V-Play SDK includes many open-source demos for different game genres. You can use their source code and build your game in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

If you do not find your game genre in this list and wonder if V-Play is the right choice, just contact us, we are happy to help!

Contact Us

App Development
Better Apps, Less Effort

Develop feature-rich, cross-platform mobile apps from a single code base.

V-Play apps look, feel and perform exactly like native iOS, Android and Desktop apps. With less code & much faster development time.

Learn More Highlights Video

V-Play ranked #1 at research2guidance cross-platform tool benchmarking 2014 by 2188 developers comparing 40 leading tools.

Save Time, Code & Money

Save up to 90% source code with V-Play, compared to frameworks like Xamarin, Titanium, React Native and others.

Learn More

QML & JavaScript

Qt Meta Language is a highly intuitive reactive language, which is super easy to learn, yet it's extremely powerful and flexible. Mix it with JavaScript to create awesome stuff, with just a few lines of code. QML also allows you to easily create smooth and complex animations.

import QtQuick 2.0
import VPlayApps 2.0

App {
  Page {
    
    AppButton {
      anchors.centerIn: parent
      text: "Press Me"
      onClicked: {
        console.debug("Wow you pressed me!")
      }
    }
  }
}

Learn More

Monetize & Analyze

With V-Play, you can use many 3rd party services for ads, in-app purchases, analytics and more, with just a few lines of code. All of these plugins work cross-platform, which allows you to maintain a single code base.

Learn More

Native Sensors & More

V-Play Apps harness the power of Qt, the leading cross-platform development framework used by over 1,000,000 developers.

This gives your access to native device features like sensors, camera, file system as well as multimedia, networking, localization and much more.

Learn More

Responsive Design

V-Play has built in responsive design capabilities, you can target phones and tablets with the same source code.

Learn More

Highly Extensible

You have existing JavaScript, C++ or native code? You want to add any 3rd party SDK that we do not offer already?

No worries, you can add any JS, C++, Java or Objective-C code to your project.

Learn More

Component Showcase App shows the most important V-Play features and components

We got a demo app for you!

The V-Play SDK includes an open-source demo for this app type. You can use its source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/appdemos/showcase/Showcase.pro

Qt World Summit Conference App a full-featured conference management app made by V-Play

We got a demo app for you!

The V-Play SDK includes an open-source demo for this app type. You can use its source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/appdemos/qtws2016/QtWS2016.pro

Twitter App how to build layouts like in the official Twitter app for iOS and Android

We got a demo app for you!

The V-Play SDK includes an open-source demo for this app type. You can use its source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/appdemos/twitter/Twitter.pro

Maps App displays free bikes or boxes at bike stations for Vienna's bike sharing service Citybike Wien

We got a demo app for you!

The V-Play SDK includes an open-source demo for this app type. You can use its source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/appdemos/maps/Maps.pro

Messaging App demonstrates how to create the UI of a Facebook Messenger like app

We got a demo app for you!

The V-Play SDK includes an open-source demo for this app type. You can use its source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/appdemos/messaging/Messaging.pro

Weather App how to include powerful animations into your user interface

We got a demo app for you!

The V-Play SDK includes an open-source demo for this app type. You can use its source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play.

<Path to V-PlaySDK>/Examples/V-Play/appdemos/waether/Weather.pro

Any other Idea? let us know how we can help you

You are looking for another app demo?

The V-Play SDK includes many open-source demos for different app types. You can use their source code and build your app in record time. After installing V-Play, you can simply open the .pro file with Qt Creator, the development environment used for V-Play..

If you do not find your app type in this list and wonder if V-Play is the right choice, just contact us, we are happy to help!

Contact Us