flex游戏引擎(PushButton)--键盘控制组件-移动小球
Lesson4Base.as
?
/*******************************************************************************
?* PushButton Engine
?* Copyright (C) 2009 PushButton Labs, LLC
?* For more information see http://www.pushbuttonengine.com
?*
?* This file is licensed under the terms of the MIT license, which is included
?* in the License.html file at the root directory of this SDK.
?******************************************************************************/
package
{
??? import com.pblabs.engine.PBE;
??? import com.pblabs.engine.entity.*;
??? import com.pblabs.rendering2D.*;
??? import com.pblabs.rendering2D.ui.*;
???
??? import flash.display.Sprite;
??? import flash.geom.Point;
???
??? [SWF(width="800", height="600", frameRate="60")]
??? public class Lesson4Base extends Sprite
??? {
??????? public function Lesson4Base()
??????? {
??????????? // Start up PBE
??????????? PBE.startup(this);
???????????
??????????? // Set up a simple scene entity
??????????? createScene();
???????????
??????????? // Create a simple avatar entity
??????????? createHero();
??????? }
???????
??????? private function createScene():void
??????? {
??????????? var sceneView:SceneView = new SceneView();??????????????????????? // Make the SceneView
??????????? sceneView.width = 800;
??????????? sceneView.height = 600;
???????????
??????????? PBE.initializeScene(sceneView);?????????????????????????????????? // This is just a helper function that will set up a basic scene for us
??????? }
???????
??????? private function createHero():void
??????? {
??????????? var hero:IEntity = allocateEntity();????????????????????????????? // Allocate an entity for our hero avatar
???????????
??????????? var spatial:SimpleSpatialComponent = new SimpleSpatialComponent();// Create our spatial component
???????????
??????????? spatial.position = new Point(0,0);??????????????????????????????? // Set our hero's spatial position as 0,0
??????????? spatial.size = new Point(50,50);????????????????????????????????? // Set our hero's size as 50,50
??????????? spatial.spatialManager = PBE.spatialManager;
??????????? hero.addComponent( spatial, "Spatial" );????????????????????????? // Add our spatial component to the Hero entity with the name "Spatial"
???????????
??????????? var render:SimpleShapeRenderer = new SimpleShapeRenderer();?????? // Create a renderer to display our object
??????????? render.fillColor = 0x0000FF0;
??????????? render.isCircle = true;
??????????? render.radius = 25;
??????????? render.lineSize = 2;
??????????? render.lineColor = 0x000000;
??????????? render.scene = PBE.scene;???????????????????????????????????????? // Set which scene this is a part of
???????????
??????????? // Point the render component to this entity's Spatial component for position information
??????????? render.positionProperty = new PropertyReference("@Spatial.position");
??????????? // Point the render component to this entity's Spatial component for rotation information
??????????? render.rotationProperty = new PropertyReference("@Spatial.rotation");
???????????
??????????? hero.addComponent( render, "Render" );??????????????????????????? // Add our render component to the Hero entity with the name "Render"
???????????
???????????
??????????? // Create an instance of our hero controller component
??????????? var controller:HeroControllerComponent = new HeroControllerComponent();
??????????? // Point the controller component to this entity's Spatial component for position information
??????????? controller.positionReference = new PropertyReference("@Spatial.position");
???????????
??????????? // Add the demo controller component to the Hero entity with the name "Controller"
??????????? hero.addComponent( controller, "Controller" );
???????????
??????????? hero.initialize("Hero");????????????????????????????????????????? // Register the entity with PBE under the name "Hero"????????
??????? }
??? }
}
HeroControllerComponent.as
/*******************************************************************************
?* PushButton Engine
?* Copyright (C) 2009 PushButton Labs, LLC
?* For more information see http://www.pushbuttonengine.com
?*
?* This file is licensed under the terms of the MIT license, which is included
?* in the License.html file at the root directory of this SDK.
?******************************************************************************/
package
{
?
?import com.pblabs.engine.PBE;
?import com.pblabs.engine.components.TickedComponent;
?import com.pblabs.engine.entity.PropertyReference;
?import com.pblabs.engine.core.InputKey;?
?
?import flash.geom.Point;
?
?// Make a ticked component so that it can update itself every frame with onTick()
?public class HeroControllerComponent extends TickedComponent
?{
??// Keep a property reference to our entity's position.
??public var positionReference:PropertyReference;
??
??// onTick() is called every frame
??public override function onTick(tickRate:Number):void
??{
???????
???var position:Point = owner.getProperty(positionReference);
???????????
???// Look at our input keys to see which direction we should move. Left is -x, right is +x.
?????????
???if (PBE.isKeyDown(InputKey.RIGHT))
??????????
???{
?????????????
????// Move our hero to the right
????????????
?????position.x += 15;
???????????
???}
??????
???if (PBE.isKeyDown(InputKey.LEFT))
?????????
???{
?????????
????// Move our hero to the left
???????????
?????position.x -= 15;
????????
???}
???if (PBE.isKeyDown(InputKey.UP))
????
???{
????
????// Move our hero to the right
????
????position.y -= 15;
????
???}
???
???if (PBE.isKeyDown(InputKey.DOWN))
????
???{
????
????// Move our hero to the left
????
????position.y += 15;
????
???} ???
??????????
???// Finally, add some boundary limits so that we don't go off the edge of the screen.
???30.???????????
???if (position.x > 375)
?????????
???{
??????????????
????// Set our position at the wall edge
??????????????
?????position.x = 375;???????????????
??????????
???}?
?????????
???else if (position.x < -375)
?????????
???{
??????????????
????// Set our position at the wall edge
??????????????
?????position.x = -375;
?????????
???}
???if (position.y > 260)
????
???{
????
????// Set our position at the wall edge
????
????position.y = 260;???????????????
????
???}?
????
???else if (position.y < -260)
????
???{
????
????// Set our position at the wall edge
????
????position.y = -260;
????
???} ???
????????
???// Send our manipulated spatial variables back to the spatial manager
?????????
????owner.setProperty(positionReference, position); ???
???
??}
?}
}
?
?
