用脚本创建带animator的prefab

    之前简单写过用脚本创建Unity动画控制器animator，这次写的是用脚本创建prefab，源代码如下：

/*
* QQ：765459020
*
* Unity编辑器
*
* 这里所用资源为Unity自带的2D素材
* 为了方便，我们取其中的Idle和Run两个animation进行操作
* 取Idle为默认状态，Run停止时返回Idle状态
* PS:编辑器并未考虑性能问题
*
* 假设是在已有的prefab上修改
* 可以先将原有prefab实例化
* 然后删除即可
*
* 2016-02-15
*
*/

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
//文件读写
using System.IO;
//Unity基础编辑器
using UnityEditor;
//Unity基础动画编辑
using UnityEditor.Animations;

public class BuildingEditor : MonoBehaviour
{

//读取animation地址,为了方便，暂且将创建的animator放在该文件夹内
private static string ReadAnimationPath = Application.dataPath + "/Standard Assets/2D/Animations/";
//读取prefab地址
private stat
4000
ic string ReadPrefabPath = Application.dataPath + "/Standard Assets/2D/Prefabs/";
//创造animator地址
private static string CreateAnimatorPath = "Assets/Standard Assets/2D/Animations/";
//创造prefab地址
private static string CreatePrefabPath = "Assets/Resources/Prefabs/";

//创建的animator名字,这里一定要注意加后缀".controller"
private const string ANIMATOR_NAME = "Example_Animator.controller";
//创建prefab名字
private const string PREFAB_NAME = "Example_Prefab.prefab";

private const string IDLE_ANIMATION = "RobotBoyIdle";
private const string RUN_ANIMATION = "RobotBoyRun";
private const string ROBOT_PREFAB = "CharacterRobotBoy.prefab";

/// <summary>
/// 创建Prefab实例
/// MenuItem:声明该内容对应主菜单
/// </summary>
[MenuItem("Build/Example_Prefab")]
public static void BuildExamplePrefab()
{
//先根据现有动画创造animator
BuildExampleAnimator();

//读取目录信息
DirectoryInfo info1 = new DirectoryInfo(ReadAnimationPath);
//获取刚刚创建的controller文件
FileInfo[] file1 = info1.GetFiles("*.controller");

//读取目录信息
DirectoryInfo info2 = new DirectoryInfo(ReadPrefabPath);
//获取该目录下的全部prefab
FileInfo[] file2 = info2.GetFiles("*.prefab");

for (int i = 0; i < file2.Length; i++)
{
if (file2[i].Name == ROBOT_PREFAB)
{
//先将目前已有的prefab实例化
GameObject go = Instantiate(AssetDatabase.LoadAssetAtPath<GameObject>(DataPathToAssetPath(file2[i].FullName)));
//表示该prefab处于更改状态（可以没有）
EditorUtility.SetDirty(go);
Selection.activeObject = go;

//添加animator
if (!go.GetComponent<Animator>())
{
go.AddComponent<Animator>();
}
//设置animator为刚刚创建的animator
go.GetComponent<Animator>().runtimeAnimatorController = AssetDatabase.LoadAssetAtPath<RuntimeAnimatorController>(DataPathToAssetPath(file1[0].FullName));
//5.0新功能，根节点动画
go.GetComponent<Animator>().applyRootMotion = true;

//创建prefab
PrefabUtility.CreatePrefab(CreatePrefabPath + PREFAB_NAME, go);

//Editor模式下只能用这个
DestroyImmediate(go);
}
}

//资源进行刷新保存，否则有可能丢失代码创造的资源
AssetDatabase.Refresh();
AssetDatabase.SaveAssets();
}

/// <summary>
/// 创建animator实例
/// </summary>
private static void BuildExampleAnimator()
{
//读取目录信息
DirectoryInfo info = new DirectoryInfo(ReadAnimationPath);
//获取全部动画文件
FileInfo[] file1 = info.GetFiles("*.anim");

AnimatorController animator = AnimatorController.CreateAnimatorControllerAtPath(CreateAnimatorPath + ANIMATOR_NAME);
//controller里边有层级关系，这里我们取其默认层级，即Base Layer
AnimatorControllerLayer layer = animator.layers[0];

for (int i = 0; i < file1.Length; i++)
{
AnimationClip clip = AssetDatabase.LoadAssetAtPath<AnimationClip>(DataPathToAssetPath(file1[i].FullName));
if (clip.name == IDLE_ANIMATION)
{
//添加名为clip.name的状态，其位置为(250,100,0)
AnimatorState state = layer.stateMachine.AddState(clip.name, new Vector3(250, 100, 0));
//该状态的动画为clip
state.motion = clip;
//设置该状态为默认状态
layer.stateMachine.defaultState = state;
}
}

for (int i = 0; i < file1.Length; i++)
{
AnimationClip clip = AssetDatabase.LoadAssetAtPath<AnimationClip>(DataPathToAssetPath(file1[i].FullName));
if (clip.name == RUN_ANIMATION)
{
AnimatorState state = layer.stateMachine.AddState(clip.name, new Vector3(250, 0, 0));
state.motion = clip;
//添加转换状态，true代表激活退出状态
state.AddTransition(layer.stateMachine.defaultState, true);
//这是让播完动画才能退出
state.transitions[0].exitTime = 1F;
state.transitions[0].duration = 0;
}
}

//资源进行刷新保存，否则有可能丢失代码创造的资源
AssetDatabase.Refresh();
AssetDatabase.SaveAssets();

}

/// <summary>
/// 系统路径转换为Unity路径
/// </summary>
/// <param name="path">路径</param>
/// <returns></returns>
public static string DataPathToAssetPath(string path)
{
if (Application.platform == RuntimePlatform.WindowsEditor)
{
return path.Substring(path.IndexOf("Assets\\"));
}
else
{
return path.Substring(path.IndexOf("Assets/"));
}
}

}

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