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标题: Away3D骨骼动画的加载和交互实例 [打印本页]

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作者: 铁锹    时间: 2012-12-21 13:20
标题: Away3D骨骼动画的加载和交互实例
本帖与你分享的是 Away3D骨骼动画的加载和交互实例，摘录如下：

少些口水，直接来Away3D展示：



如何加载AWD文件与骨骼动画外部资源。

加载后如何绘制动画数据用以重放动画序列。

如何使用键盘控制游戏角色的移动。

如何使用skybox与fog method来创建一个无缝的游戏背景。


下面是截图预览，你也可以通过点击截图进入away3D的全屏3D动画效果预览：



2012-8-6 14:49:57 上传
下载附件(23.05 KB)




下载: PolarBear.awd





/*
Bones animation loading and interaction example in Away3d
Demonstrates:
How to load an AWD file with bones animation frmo external resources.

How to map animation data after loading in order to playback an animation sequence.

How to control the movement of a game character using the mouse.

How to use a skybox with a fog method to create a seamless play area.
Code by Rob Bateman

rob@infiniteturtles.co.uk

http://www.infiniteturtles.co.uk
This code is distributed under the MIT License
Copyright (c)
Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the “Software”), to deal

in the Software without restriction, including without limitation the rights

to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

copies of the Software, and to permit persons to whom the Software is

furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in

all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

THE SOFTWARE.
*/
package

{

import away3d.animators.*;

import away3d.animators.data.*;

import away3d.animators.skeleton.*;

import away3d.cameras.*;

import away3d.containers.*;

import away3d.controllers.*;

import away3d.core.base.*;

import away3d.debug.*;

import away3d.entities.Mesh;

import away3d.events.*;

import away3d.library.*;

import away3d.library.assets.*;

import away3d.lights.*;

import away3d.lights.shadowmaps.CubeMapShadowMapper;

import away3d.loaders.*;

import away3d.loaders.parsers.*;

import away3d.materials.*;

import away3d.materials.lightpickers.StaticLightPicker;

import away3d.materials.methods.*;

import away3d.primitives.*;

import away3d.textures.*;
import flash.display.*;

import flash.events.*;

import flash.filters.*;

import flash.geom.*;

import flash.net.*;

import flash.text.*;

import flash.ui.*;
[SWF(backgroundColor="#000000", frameRate="30", quality="LOW")]
public class Intermediate_CharacterAnimation extends Sprite

{

//signature swf

[Embed(source="/../embeds/signature.swf", symbol="Signature")]

public var SignatureSwf:Class;
//polar bear color map

[Embed(source="/../embeds/snow_diffuse.png")]

private var SnowDiffuse:Class;
//polar bear normal map

[Embed(source="/../embeds/snow_normals.png")]

private var SnowNormal:Class;
//polar bear specular map

[Embed(source="/../embeds/snow_specular.png")]

private var SnowSpecular:Class;
//snow color map

[Embed(source="/../embeds/polarbear_diffuse.jpg")]

private var BearDiffuse:Class;
//snow normal map

[Embed(source="/../embeds/polarbear_normals.jpg")]

private var BearNormal:Class;
//snow specular map

[Embed(source="/../embeds/polarbear_specular.jpg")]

private var BearSpecular:Class;
//skybox textures

[Embed(source="/../embeds/skybox/sky_posX.jpg")]

private var PosX:Class;

[Embed(source="/../embeds/skybox/sky_negX.jpg")]

private var NegX:Class;

[Embed(source="/../embeds/skybox/sky_posY.jpg")]

private var PosY:Class;

[Embed(source="/../embeds/skybox/sky_negY.jpg")]

private var NegY:Class;

[Embed(source="/../embeds/skybox/sky_posZ.jpg")]

private var PosZ:Class;

[Embed(source="/../embeds/skybox/sky_negZ.jpg")]

private var NegZ:Class;
//engine variables

private var scene:Scene3D;

private var camera:Camera3D;

private var view:View3D;

private var cameraControllerookAtController;

private var awayStats:AwayStats;
//animation variables

private var animation:SkeletonAnimation;

private var animator:SmoothSkeletonAnimator;

private var breatheSequence:SkeletonAnimationSequence;

private var walkSequence:SkeletonAnimationSequence;

private var ***nSequence:SkeletonAnimationSequence;

private var isRunning:Boolean;

private var isMoving:Boolean;

private var movementDirection:Number;

private var currentAnim:String;

private var currentRotationInc:Number = 0;
//animation constants

private const ANIM_BREATHE:String = "Breathe";

private const ANIM_WALK:String = "Walk";

private const ANIM_RUN:String = "Run";

private const XFADE_TIME:Number = 0.5;

private const ROTATION_SPEED:Number = 3;

private const RUN_SPEED:Number = 2;

private const WALK_SPEED:Number = 1;

private const BREATHE_SPEED:Number = 1;
//signature variables

private var Signature:Sprite;

private var SignatureBitmap:Bitmap;
//light objects

private var sunLightirectionalLight;

private var skyLightointLight;

private var lightPicker:StaticLightPicker;

private var filteredShadowMapMethod:TripleFilteredShadowMapMethod;

private var fogMethod:FogMethod;
//material objects

private var bearMaterial:TextureMaterial;

private var groundMaterial:TextureMaterial;

private var cubeTexture:BitmapCubeTexture;
//scene objects

private var text:TextField;

private var mesh:Mesh;

private var ground:Mesh;

private var skyBox:SkyBox;
/**

* Cons***ctor

*/

public function Intermediate_CharacterAnimation()

{

init();

}
/**

* Global initialise function

*/

private function init():void

{

initEngine();

initText();

initLights();

initObjects();

initListeners();

}
/**

* Initialise the engine

*/

private function initEngine():void

{

stage.scaleMode = StageScaleMode.NO_SCALE;

stage.align = StageAlign.TOP_LEFT;
scene = new Scene3D();
camera = new Camera3D();

camera.lens.far = 5000;

camera.lens.near = 20;

camera.y = 500;

camera.z = 0;

camera.lookAt(new Vector3D(0, 0, 1000));
view = new View3D();

view.scene = scene;

view.camera = camera;
//setup controller to be used on the camera

var placeHolder:ObjectContainer3D = new ObjectContainer3D();

placeHolder.z = 1000;

cameraController = new LookAtController(camera, placeHolder);
view.addSourceURL("srcview/index.html");

addChild(view);
//add signature

Signature = Sprite(new SignatureSwf());

SignatureBitmap = new Bitmap(new BitmapData(Signature.width, Signature.height, ***e, 0));

stage.quality = StageQuality.HIGH;

SignatureBitmap.bitmapData.draw(Signature);

stage.quality = StageQuality.LOW;

addChild(SignatureBitmap);
awayStats = new AwayStats(view)

addChild(awayStats);

}
/**

* Create an ins***ctions overlay

*/

private function initText():void

{

text = new TextField();

text.defaultTextFormat = new TextFormat("Verdana", 11, 0xFFFFFF);

text.width = 240;

text.height = 100;

text.selectable = false;

text.mouseEnabled = false;

text.text = "Cursor keys / WSAD - move
";

text.appendText("SHIFT - hold down to ***n
");
text.filters = [new DropShadowFilter(1, 45, 0x0, 1, 0, 0)];
addChild(text);

}
/**

* Initialise the lights

*/

private function initLights():void

{

//create a light for shadows that mimics the sun's position in the skybox

sunLight = new DirectionalLight(-1, -0.4, 1);

sunLight.color = 0xFFFFFF;

sunLight.castsShadows = ***e;

sunLight.ambient = 1;

sunLight.diffuse = 1;

sunLight.specular = 1;

scene.addChild(sunLight);
//create a light for ambient effect that mimics the sky

skyLight = new PointLight();

skyLight.y = 500;

skyLight.color = 0xFFFFFF;

skyLight.diffuse = 1;

skyLight.specular = 0.5;

skyLight.radius = 2000;

skyLight.fallOff = 2500;

scene.addChild(skyLight);
lightPicker = new StaticLightPicker([sunLight, skyLight]);
//create a global shadow method

filteredShadowMapMethod = new TripleFilteredShadowMapMethod(sunLight);

//filteredShadowMapMethod.epsilon = 0.1;
//create a global fog method

fogMethod = new FogMethod(0, 3000, 0x5f5e6e);

}
/**

* Initialise the scene objects

*/

private function initObjects():void

{
AssetLibrary.enableParser(AWDParser);
AssetLibrary.addEventListener(AssetEvent.ASSET_COMPLETE, onAssetComplete);

AssetLibrary.load(new URLRequest("assets/PolarBear.awd"));
//create a snowy ground plane

groundMaterial = new TextureMaterial(new BitmapTexture((new SnowDiffuse()).bitmapData), ***e, ***e, ***e);

groundMaterial.lightPicker = lightPicker;

groundMaterial.specularMap = new BitmapTexture(new SnowSpecular().bitmapData);

groundMaterial.normalMap = new BitmapTexture(new SnowNormal().bitmapData);

groundMaterial.shadowMethod = filteredShadowMapMethod;

groundMaterial.addMethod(fogMethod);

groundMaterial.ambient = 0.5;

ground = new Mesh(new PlaneGeometry(50000, 50000), groundMaterial);

ground.geometry.scaleUV(50, 50);

ground.castsShadows = ***e;

scene.addChild(ground);
//create a skybox

cubeTexture = new BitmapCubeTexture(new PosX().bitmapData, new NegX().bitmapData, new PosY().bitmapData, new NegY().bitmapData, new PosZ().bitmapData, new NegZ().bitmapData);

skyBox = new SkyBox(cubeTexture);

scene.addChild(skyBox);

}
/**

* Initialise the listeners

*/

private function initListeners():void

{

addEventListener(Event.ENTER_FRAME, onEnterFrame);

stage.addEventListener(Event.RESIZE, onResize);

onResize();

}
/**

* Navigation and render loop

*/

private function onEnterFrame(event:Event):void

{

//update character animation

if (mesh)

mesh.rotationY += currentRotationInc;
view.render();

}
/**

* Listener function for asset complete event on loader

*/

private function onAssetComplete(event:AssetEvent):void

{

if (event.asset.assetType == AssetType.SKELETON) {

//create an animation object

animation = new SkeletonAnimation(event.asset as Skeleton, 3, ***e);

} else if (event.asset.assetType == AssetType.ANIMATION) {

//create sequence objects for each animation sequence encountered

if (event.asset.name == ANIM_BREATHE)

breatheSequence = event.asset as SkeletonAnimationSequence;

else if (event.asset.name == ANIM_WALK)

walkSequence = event.asset as SkeletonAnimationSequence;

else if (event.asset.name == ANIM_RUN)

} else if (event.asset.assetType == AssetType.MESH) {

//create material object and assign it to our mesh

bearMaterial = new TextureMaterial(new BitmapTexture(new BearDiffuse().bitmapData));

bearMaterial.shadowMethod = filteredShadowMapMethod;

bearMaterial.normalMap = new BitmapTexture(new BearNormal().bitmapData);

bearMaterial.specularMap = new BitmapTexture(new BearSpecular().bitmapData);

bearMaterial.addMethod(fogMethod);

bearMaterial.lightPicker = lightPicker;

bearMaterial.gloss = 50;

bearMaterial.specular = 0.5;

bearMaterial.ambientColor = 0xAAAAAA;

bearMaterial.ambient = 0.5;
//create mesh object and assign our animation object and material object

mesh = event.asset as Mesh;

mesh.geometry.animation = animation;

mesh.material = bearMaterial;

mesh.castsShadows = ***e;

mesh.scale(50);

mesh.z = 1000;

mesh.rotationY = -45;

scene.addChild(mesh);
//wrap our mesh animation state in an animator object and add our sequence objects

animator = new SmoothSkeletonAnimator(mesh.animationState as SkeletonAnimationState);

animator.addSequence(breatheSequence);

animator.addSequence(walkSequence);

animator.addSequence***nSequence);
//register our mesh as the lookAt target

cameraController.lookAtObject = mesh;
//default to breathe sequence

stop();
//add key listeners

stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);

stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);

}

}
/**

* Key down listener for animation

*/

private function onKeyDown(event:KeyboardEvent):void

{

switch (event.keyCode) {

case Keyboard.SHIFT:

isRunning = ***e;

if (isMoving)

updateMovement(movementDirection);

break;

case Keyboard.UP:

case Keyboard.W:

updateMovement(movementDirection = 1);

break;

case Keyboard.DOWN:

case Keyboard.S:

updateMovement(movementDirection = -1);

break;

case Keyboard.LEFT:

case Keyboard.A:

currentRotationInc = -ROTATION_SPEED;

break;

case Keyboard.RIGHT:

case Keyboard.D:

currentRotationInc = ROTATION_SPEED;

break;

}

}
private function onKeyUp(event:KeyboardEvent):void

{

switch (event.keyCode) {

case Keyboard.SHIFT:

isRunning = false;

if (isMoving)

updateMovement(movementDirection);

break;

case Keyboard.UP:

case Keyboard.W:

case Keyboard.DOWN:

case Keyboard.S:

stop();

break;

case Keyboard.LEFT:

case Keyboard.A:

case Keyboard.RIGHT:

case Keyboard.D:

currentRotationInc = 0;

break;

}

}
private function updateMovement(dir:Number):void

{

isMoving = ***e;
//update animator speed

animator.timeScale = dir*(isRunning? RUN_SPEED : WALK_SPEED);
//update animator sequence

var anim:String = isRunning? ANIM_RUN : ANIM_WALK;

if (currentAnim == anim)

return;
currentAnim = anim;
animator.play(currentAnim, XFADE_TIME);

}
private function stop():void

{

isMoving = false;
//update animator speed

animator.timeScale = BREATHE_SPEED;
//update animator sequence

if (currentAnim == ANIM_BREATHE)

return;
currentAnim = ANIM_BREATHE;
animator.play(currentAnim, XFADE_TIME);

}
/**

* stage listener for resize events

*/

private function onResize(event:Event = null):void

{

view.width = stage.stageWidth;

view.height = stage.stageHeight;

SignatureBitmap.y = stage.stageHeight - Signature.height;

awayStats.x = stage.stageWidth - awayStats.width;

}

}

}

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