Papervision3D Game-like Sample

game-like sample using Papervision 3d and Tweener

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modified : 2009-03-03 02:11:56

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//game-like sample using Papervision 3d and Tweener

package {
    import flash.display.*;
    import flash.events.*;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.ui.Keyboard;
    import flash.utils.getTimer;
    
    import caurina.transitions.Tweener;
    
    import org.papervision3d.core.clipping.FrustumClipping;
    import org.papervision3d.cameras.Camera3D;
    import org.papervision3d.lights.PointLight3D;
    import org.papervision3d.materials.*;
    import org.papervision3d.materials.special.CompositeMaterial;
    import org.papervision3d.materials.shadematerials.FlatShadeMaterial;
    import org.papervision3d.materials.utils.MaterialsList;
    import org.papervision3d.objects.DisplayObject3D;
    import org.papervision3d.objects.primitives.*;
    import org.papervision3d.render.BasicRenderEngine;
    import org.papervision3d.scenes.Scene3D;
    import org.papervision3d.view.Viewport3D;
 
    [SWF(backgroundColor=0x6666FF)]
 
    public class Pv3DSam1 extends Sprite
    {
        //private var container 	: Sprite;
        private var viewport	        : Viewport3D;
        private var scene     	        : Scene3D;
        private var camera    	        : Camera3D;
        private var rootNode  	        : DisplayObject3D;
        private var renderer	        : BasicRenderEngine;
	private var light		: PointLight3D;

//for debug
 	private var frameCount		: Number;
 	private var prevTimer		: Number; 
 	private var debugText		: Array;
 	private var numDebugItems	: int = 12;

//camera information
        private var exCamera            : Array;
        private var cameraStatus        : int = 0; // 0: ground, 1:during change, 2:bird-eyes, 3:Look-at-paperPlane
     
        //coneObject
        private var coneObj             : DisplayObject3D;
        private var coneMat             : CompositeMaterial; //FlatShadeMaterial;
 
 	//cubeObject
        private var cubeObj  		: DisplayObject3D;
        private var cubeSize 		: int = 50;//cubeオブジェクト1辺の長さ
        private var cubeSegment   	: int = 1;  //面の分割数
        private var cubeMatList 	: MaterialsList;
        private var cubeMat        	: CompositeMaterial; //FlatShadeMaterial;
        private var cubeRotTheta	: Number = 0;
        
        //paperPlaneObject
        private var paperPlaneObj	: DisplayObject3D;
        private var paperPlaneSize	: int = 20;
  	private var paperPlaneMat	: CompositeMaterial; //FlatShadeMaterial;
  	private var paperPlaneRotTheta	: Number = 0;
        
        //ground field
        private var fieldObj		: DisplayObject3D;
        private var fieldSize		: int = 2000;
        private var fieldSegment	: int = 1;
        private var fieldMat    	: CompositeMaterial;
 	private var fieldLimit	        : int = fieldSize / 2 - 20;
 
        private var rightKey	        :Boolean = false;
        private var leftKey	        :Boolean = false;
        private var upKey		:Boolean = false;
        private var downKey	        :Boolean = false;
        private var shiftKey	        :Boolean = false;        
        private var spaceKey            :Boolean = false;
        
        private var charaHeight	        : int = 50;
        private var onJump		: Boolean = false;
        private var deltaJump		: int = 0;
        private var powerJump		: int = 40;
 	private var deltaRot    	: int = 2;
 	private var deltaMove	        : int = 7;
 		
        public function Pv3DSam1():void
        {

stage.frameRate = 30;
            stage.quality   = "LOW";
            stage.scaleMode = "noScale";
            stage.align     = StageAlign.TOP_LEFT;
 
 	    viewport 	= new Viewport3D( 0, 0, true );
 	    renderer 	= new BasicRenderEngine( );
            scene 	= new Scene3D( );
            rootNode 	= new DisplayObject3D( );
	    light	= new PointLight3D( );

addChild( viewport );
            scene.addChild( rootNode );
            renderer.clipping = new FrustumClipping(FrustumClipping.BOTTOM);
 	    light.y = 2000;
 
            //create ground field
 	    fieldMat = new CompositeMaterial();
            fieldMat.addMaterial( new ColorMaterial( 0x888800, 1 ) );
            fieldMat.addMaterial( new WireframeMaterial( 0x000000, 0.3 ) );
            fieldMat.lineAlpha = 0.1;
 	    fieldMat.fillAlpha = 1;
 	    fieldObj = new Plane( fieldMat, fieldSize, fieldSize, fieldSegment, fieldSegment );
 	    fieldObj.rotationX = 90;
 	    rootNode.addChild( fieldObj );

//create cone
            coneMat = new CompositeMaterial();
            coneMat.addMaterial( new FlatShadeMaterial( light, 0xDDDDDD, 0xFF6666 ) );
            coneMat.addMaterial( new WireframeMaterial( 0x000000, 0.3 ) );
            coneObj = new Cone( coneMat, 50, 200, 16, 1 );
            coneObj.y = 101;
            rootNode.addChild( coneObj );
 
            //create cube
	    cubeMat = new CompositeMaterial();
            cubeMat.addMaterial( new FlatShadeMaterial(light, 0xFFFF00, 0xAAAA00) );
            cubeMat.addMaterial( new WireframeMaterial( 0x000000, 0.3 ) );
            cubeMatList = new MaterialsList( );
            cubeMatList.addMaterial( cubeMat, "all" );
            cubeObj = new Cube( cubeMatList, cubeSize, cubeSize, cubeSize, cubeSegment, cubeSegment, cubeSegment );
            cubeObj.y = cubeSize;
            rootNode.addChild( cubeObj );
 			
 	    //create paperPlane
            paperPlaneMat = new CompositeMaterial();
            paperPlaneMat.addMaterial( new FlatShadeMaterial( light, 0x88CCAA, 0x448866 ) );
            paperPlaneMat.addMaterial( new WireframeMaterial( 0x000000, 0.3 ) );
            paperPlaneMat.oneSide = false;
            paperPlaneObj = new PaperPlane( paperPlaneMat, 0.7 );
            paperPlaneObj.y = 30;
            paperPlaneObj.rotationY = 180;            
            rootNode.addChild    ( paperPlaneObj );
 
            //camera setting
            camera = new Camera3D(90, 10, 2000, true);
            camera.z = -cubeSize;
            camera.y = charaHeight;
            camera.x = 124;
            camera.z = -340;
            camera.focus = 10;
            camera.zoom = 50;
            camera.rotationY = 300 ;
            exCamera = new Array();

//fps computing
 	    frameCount = 0;
 	    prevTimer = getTimer();
 
            stage.addEventListener( Event.ENTER_FRAME, loop );
            stage.addEventListener( KeyboardEvent.KEY_DOWN, keyDownHandler );
            stage.addEventListener( KeyboardEvent.KEY_UP, keyUPHandler );
            
            initializeDebugger();
        }
 
 	private function initializeDebugger():void
 	{
 	    debugText = new Array();
 	    var debugTextFormat:TextFormat = new TextFormat();
 	    debugTextFormat.size = 11;
 	    debugTextFormat.color = 0xFFFFFF;
 	    debugTextFormat.font = "Courier New";

for( var i:int = 0; i < numDebugItems; i++ )
 	    {
 		debugText[ i ] = new TextField();
 		debugText[ i ].type = "dynamic";
 		debugText[ i ].width = 150;
 		debugText[ i ].height = 20;
 		debugText[ i ].x = 12;
 		debugText[ i ].y = 8 + 15 * i;
 		debugText[ i ].defaultTextFormat = debugTextFormat;
 		debugText[ i ].text = " --------";
 		addChild( debugText[i] );
 	    } 
 	}
 
 	private function keyDownHandler( event:KeyboardEvent ):void
 	{
 	    switch ( event.keyCode )
 	    {
 	        case Keyboard.RIGHT:
 		    rightKey = true;
 		    break;
 		case Keyboard.LEFT:
 		    leftKey = true;
 		    break;
 		case Keyboard.UP:
 		    upKey = true;
 		    break;
 		case Keyboard.DOWN:
 		    downKey = true;
 		    break;
 		case Keyboard.SHIFT:
 		    shiftKey = true;
 		    break;
                case Keyboard.SPACE:
                    spaceKey = true;
                    break;
 		default:    
 		    break;
 	    }
        }

private function keyUPHandler( event:KeyboardEvent ):void
 	{
		
            switch ( event.keyCode )
 	    {
 	    	case Keyboard.RIGHT:
 		    rightKey = false;
 		    break;
 		case Keyboard.LEFT:
 		    leftKey = false;
 		    break;
 		case Keyboard.UP:
 		    upKey = false;
 		    break;
  		case Keyboard.DOWN:
 		    downKey = false;
 		    break;
 		case Keyboard.SHIFT:			                      
                    shiftKey=false;
 		    break;
                case Keyboard.SPACE:
                    spaceKey = false;
                    break;					
 		default:
 		    break;
 	    }
 	}

private function loop( event:Event ):void
        {
            controlCamera();	
            moveObjects();
	    displayDebug();
            renderer.renderScene( scene, camera, viewport );
        }
    
    	private function displayDebug():void
    	{
    		frameCount ++;
    		if ( (getTimer() - prevTimer ) / 1000 >= 0.25 )
    		{
    			var fps:Number = frameCount * 1000 / ( getTimer() - prevTimer );
    			fps = Math.floor( fps * 10 ) / 10;
    			prevTimer = getTimer();
    			frameCount = 0;
    			debugText[ 0 ].text = "FPS	   : " + fps;
    		}
    		debugText[ 1 ].text = "CAMERA_X : " + int( camera.x );
    		debugText[ 2 ].text = "CAMERA_Y : " + int( camera.y ); 
    		debugText[ 3 ].text = "CAMERA_Z : " + int( camera.z ); 
                debugText[ 4 ].text = "ROT_X    : " + int( camera.rotationX );
                debugText[ 5 ].text = "ROT_Y    : " + int( camera.rotationY );
                debugText[ 6 ].text = "ROT_Z    : " + int( camera.rotationZ );
               
                debugText[ 8 ].text = "Move     : ↑↓";
                debugText[ 9 ].text = "Turn     : →←";
                debugText[ 10 ].text = "Observe  : Shift";
                debugText[ 11 ].text = "Bird-eyes: Space" 
    	}
    
    	private function moveObjects():void
    	{
            cubeObj.rotationZ += 10;
            cubeRotTheta += Math.PI * 2 / 100;
	    cubeObj.x = Math.cos( cubeRotTheta ) * 150 - 250;    
	    cubeObj.z = Math.sin( cubeRotTheta ) * 150 - 250;
			
	    paperPlaneObj.rotationY -= 360 / 100;
	    paperPlaneObj.x = - Math.cos( cubeRotTheta ) * 300 + 150;
	    paperPlaneObj.z = - Math.sin( cubeRotTheta ) * 300 + 150;
	    paperPlaneObj.y = ( Math.cos( cubeRotTheta ) ) * 100 + 110;
        }
    
    	private function controlCamera():void
    	{
            if( spaceKey == true )
            {
                if( cameraStatus == 0 ) 
                {
                    renderer.clipping = new FrustumClipping(FrustumClipping.NEAR);

cameraStatus = 1;
                    exCamera[0] = camera.x;
                    exCamera[1] = camera.y;
                    exCamera[2] = camera.z;
                    exCamera[3] = camera.rotationX;
                    exCamera[4] = camera.rotationY;
                    exCamera[5] = camera.rotationZ;    
                    Tweener.addTween( camera, {x: 0, y:2000, z:0, time:2} );
                    Tweener.addTween( camera, {rotationX: 90, time:3, onComplete: function():void{cameraStatus = 2} } ); 
                }
                else if( cameraStatus == 2 )
                {
                    cameraStatus = 1;
                    Tweener.addTween( camera, {x: exCamera[0], y:exCamera[1], z:exCamera[2], time:3} );
                    Tweener.addTween( camera, {rotationX: exCamera[3], time:2, onComplete: function():void
                    {
                        cameraStatus = 0;
                        renderer.clipping = new FrustumClipping(FrustumClipping.BOTTOM);
                    }} );
                    exCamera.length = 0;
                }
            }

if( rightKey == true )
            {
        	camera.rotationY += deltaRot;
	    }
	    else if( leftKey == true )
	    {	
		camera.rotationY -= deltaRot;
	    }
         
            if( shiftKey == true )
            {
                if( cameraStatus == 0 )
                {
                    exCamera[0] = camera.rotationX;
                    exCamera[1] = camera.rotationY;
                    exCamera[2] = camera.rotationZ;
                    cameraStatus = 3;
                }
                
                if( cameraStatus == 3 )
                { 
                    camera.lookAt( paperPlaneObj );
                }
            }
            else
            {
                if( cameraStatus == 3 )
                {
                    cameraStatus = 0;
                    camera.rotationX = exCamera[0];
                    camera.rotationY = exCamera[1];
                    camera.rotationZ = exCamera[2];
                    exCamera.length = 0;
                }
            }
         
            if( cameraStatus == 0 )
            {
	        if( camera.x > - fieldLimit && camera.x < fieldLimit && camera.z > - fieldLimit && camera.z < fieldLimit )
		{	
		    if( upKey == true )
		    {
			camera.moveForward( deltaMove );
		    }
		    else if ( downKey == true )
		    {
			camera.moveBackward( deltaMove );
		    }
	       }
	   
               /*
	       if( shiftKey == true && onJump == false)
	       {
	           onJump = true;
	           deltaJump = powerJump;
	       }
            
               if( onJump == true )
               {
                   camera.y += deltaJump;
            	   if( deltaJump == -powerJump )
            	   {
            		onJump = false;
            		deltaJump = 0;
            	   }
            	   else
            	   {
            	        deltaJump -= 2;
            	   }
               }
               */    	
                
                //avoid camera going out of the field
                if( camera.x > fieldLimit - 10 )
                {
            	    camera.x = fieldLimit - 10;
                }
                else if( camera.x < - fieldLimit + 10)
                {
            	    camera.x = - fieldLimit + 10;
                }
                else if( camera.z > fieldLimit - 10 )
                {
            	    camera.z = fieldLimit - 10;
     	        }
     	        else if( camera.z < - fieldLimit + 10 )
     	        {
     		    camera.z = - fieldLimit + 10;
    	        }
            }
        }
    }    
}

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