flash开源游戏引擎pushButton学习笔记(5)----以xml组装游戏

以下是一个完整的以xml组装游戏的实例：整个项目文件结构如下：

1、assets/Level/common.xml 文件为pushButton引擎当中的组件组装文件，以下为该文件代码：

 

代码

<! DOCTYPE things PUBLIC "HJKHKJ" "PBEDTD.dtd" >
< things >
     < entity  name ="SpatialDB" >
         < component  name ="Manager"  type ="com.pblabs.box2D.Box2DManagerComponent" >
            
         </ component >
     </ entity >
    
     < entity  name ="Scene" >
         < component  name ="Scene"  type ="com.pblabs.rendering2D.DisplayObjectScene" >
             < trackObject  componentReference ="FeiJi" />
             < sceneViewName > MainApp </ sceneViewName >
         </ component >
     </ entity >
    
    
    
     < entity  name ="BG" >
         < component  name ="Spatial"  type ="com.pblabs.rendering2D.SimpleSpatialComponent" >
             < spatialManager  componentReference ="SpatialDB" />
             < position >
                 < x > 0 </ x >
                 < y > 0 </ y >
             </ position >
             < size  type ="" >
                 < x > 896 </ x >
                 < y > 640 </ y >
             </ size >
         </ component >
        
         < component  name ="Render"  type ="com.pblabs.rendering2D.SpriteRenderer" >
             < fileName >
                assets/image/bgs.jpg
             </ fileName >
             < positionProperty > @Spatial.position </ positionProperty >
             < sizeProperty > @Spatial.size </ sizeProperty >
             < scene  componentReference ="Scene" />
         </ component >
     </ entity >
    
    
     < entity  name ="FeiJi" >
         < component  name ="Spatial"  type ="com.pblabs.rendering2D.SimpleSpatialComponent" >
             < position >
                 < x > 0 </ x >
                 < y > 0 </ y >
             </ position >
             < spatialManager  componentReference ="SpatialDB" />
         </ component >
        
         < component  name ="Render"  type ="com.pblabs.rendering2D.SpriteRenderer" >
             < fileName > assets/image/fanship.png </ fileName >
             < positionProperty > @Spatial.position </ positionProperty >
             < sizeProperty > @Spatial.size </ sizeProperty >
             < scene  componentReference ="Scene" />
         </ component >
        
         < component  name ="Controller"  type ="controller.FeijiController" >
             < positionReference > @Spatial.position </ positionReference >
         </ component >
        
     </ entity >
    
    
     < entity  name ="HuaHua" >
         < component  name ="Spatial"  type ="com.pblabs.rendering2D.SimpleSpatialComponent" >
             < position >
                 < x > -400 </ x >
                 < y > 0 </ y >
             </ position >
             < size  type ="" >
                 < x > 60 </ x >
                 < y > 60 </ y >
             </ size >
             < spatialManager  componentReference ="SpatialDB" />
         </ component >
        
         < component  name ="Render"  type ="com.pblabs.rendering2D.SpriteRenderer" >
             < fileName > assets/image/HH_baihe.png </ fileName >
             < positionProperty > @Spatial.position </ positionProperty >
             < sizeProperty > @Spatial.size </ sizeProperty >
             < scene  componentReference ="Scene" />
         </ component >
         < component  name ="Controller"  type ="controller.HuaHuaController" >
             < input  childType ="com.pblabs.engine.core.InputMap" >
                 < GoUp > UP </ GoUp >
                 < GoDown > DOWN </ GoDown >
             </ input >
         </ component >
     </ entity >
    
     < group  name ="Common" >
         < objectReference  name ="SpatialDB" />
         < objectReference  name ="Scene" />
         < objectReference  name ="BG" />
         < objectReference  name ="FeiJi" />
         < objectReference  name ="HuaHua" />
     </ group >
</ things >

2、MainApp 游戏运行的主类，也就是文档类

代码

package  {
     import  com.pblabs.box2D.Box2DManagerComponent;
     import  com.pblabs.engine.PBE;
     import  com.pblabs.rendering2D.DisplayObjectScene;
     import  com.pblabs.rendering2D.SimpleSpatialComponent;
     import  com.pblabs.rendering2D.SpriteRenderer;
     import  com.pblabs.rendering2D.ui.SceneView;
    
     import  controller.FeijiController;
     import  controller.HuaHuaController;
    
     import  flash.display.Sprite;

     public   class  MainApp  extends  Sprite
    {
         public  function MainApp()
        {
            trace( " hello " );
            PBE.startup( this );
            createScene();
            loadLevel();
            
        }
        
         private  function createScene(): void
        {
            var scene:SceneView = new  SceneView();
            scene.width = 1024 ;
            scene.height = 600 ;
            PBE.initializeScene(scene);
            scene.name = " MainApp " ;
        }
        
        
        
         private  function loadLevel(): void
        {
            PBE.levelManager.addFileReference( 0 , " assets/Level/common.xml " );
            PBE.levelManager.addGroupReference( 0 , " Common " );
            
            PBE.levelManager.loadLevel( 0 );
            PBE.levelManager.start();
            
        }
        
        
        
        
         private  function register(): void
        {
            PBE.registerType(com.pblabs.rendering2D.DisplayObjectScene);
             // PBE.registerType();
            PBE.registerType(Box2DManagerComponent);
            PBE.registerType(SimpleSpatialComponent);
            PBE.registerType(SpriteRenderer);
            PBE.registerType(FeijiController)
            PBE.registerType(HuaHuaController);
        }
    }
}

3、FeijiController是消费机的控制器组件

代码

package  controller
{
     import  com.pblabs.engine.PBE;
     import  com.pblabs.engine.components.TickedComponent;
     import  com.pblabs.engine.core.InputKey;
     import  com.pblabs.engine.entity.PropertyReference;
    
     import  flash.geom.Point;

     public   class  FeijiController  extends  TickedComponent
    {
        
         public  var positionReference:PropertyReference;
        
        
        
         public  function FeijiController()
        {
             super ();
        }
        
         public  override function onTick(deltaTime:Number): void
        {
            var position:Point = owner.getProperty(positionReference);
            
             if (PBE.isKeyDown(InputKey.RIGHT))
            {
                position.x += 15 ;
            }
            
             if (PBE.isKeyDown(InputKey.LEFT))
            {
                position.x -= 15 ;
            }
            
             if (PBE.isKeyDown(InputKey.UP))
            {
                position.y -= 15 ;
            }
             if (PBE.isKeyDown(InputKey.DOWN))
            {
                position.y += 15 ;
            }
            
            
            
            
            
            
            
             if (position.x > 375 )
            {
                position.x = 375 ;
            } else   if (position.x <- 375 )
            {
                position.x =- 375 ;
            }
            
            owner.setProperty(positionReference,position);
        }
        
    }
}

4、HuaHuaController是小花的控制器组件

代码

package  controller
{
     import  com.pblabs.engine.components.TickedComponent;
     import  com.pblabs.engine.core.InputMap;
     import  com.pblabs.engine.entity.PropertyReference;
    
     import  flash.geom.Point;

     public   class  HuaHuaController  extends  TickedComponent
    {
        
         private  var _input:InputMap;
        
         public  function get input():InputMap
        {
             return  _input;
        }
        
         public  function set input(value:InputMap): void
        {
            _input = value;
             if (_input != null )
            {
                _input.mapActionToHandler( " GoUp " ,onGoUpHandler);
                _input.mapActionToHandler( " GoDown " ,onGoDownHandler);
            }
        }
        
        
         private  function onGoUpHandler(value:Number): void
        {
            trace( " 向上 " );
            trace(value);
        }
        
         private  function onGoDownHandler(value:Number): void
        {
            trace( " 乡下 " );
            trace(value);
        }
        
        
        
        
        
         public  function HuaHuaController()
        {
             super ();
        }
        
         public  override function onTick(deltaTime:Number): void
        {
        } 
        
    }
}