unity3d——3.5升级4.3打包资源的使用

红太狼 2022-08-26 03:53 202阅读 0赞

unity3.5+打包的资源在4.3上是不被识别的，别的版本我没试，应该也一样的情况，程序工程经过多年维护，数据的积累，升级到高版本的unity（4.3）导致之前打包的资源都不能使用，源文件也找不到了，所以只能去利用旧资源解包，unity3.5.6打包的资源可以解包成.obj格式，做模型的都知道，.obj也是模型的一种格式，只是不支持骨骼动画的格式，我之前找到一个软件可以讲打包资源解包成.obj，是java写的，但只支持4.0以上的，所以不能用（disunity\_v0.2.1）这个软件现在到了0.2.1版本了，直接用命令行操作即可，先cd导这个文件夹，然后把资源准备好，java -jar disunity.jar /Users/dilitech/Downloads/disunity\_v0.2.1/unity3d/\*.\* 直接指向这个即可，就会把你的资源解包，java -jar disunity.jar 是java执行命令，当然也可以用 bat命令（window下）sh命令（mac下）比如mac下：sh disunity.sh (然后接上你的资源文件夹路径就行我用的是： /Users/dilitech/Downloads/disunity\_v0.2.1/unity3d/)

下面说说我3.5.6解包方式

using UnityEngine;
    using System.Collections;
    using System.IO;
    using System.Text;
     
    public class ObjExporterScript
    {
    	private static int StartIndex = 0;
     
    	public static void Start()
    	{
    		StartIndex = 0;
    	}
    	public static void End()
    	{
    		StartIndex = 0;
    	}
     
     
    	public static string MeshToString(MeshFilter mf, Transform t) 
    	{	
    		Vector3 s 		= t.localScale;
    		Vector3 p 		= t.localPosition;
    		Quaternion r 	= t.localRotation;
     
     
    		int numVertices = 0;
    		Mesh m = mf.sharedMesh;
    		if (!m)
    		{
    			return "####Error####";
    		}
    		Material[] mats = mf.renderer.sharedMaterials;
     
    		StringBuilder sb = new StringBuilder();
     
    		foreach(Vector3 vv in m.vertices)
    		{
    			Vector3 v = t.TransformPoint(vv);
    			numVertices++;
    			sb.Append(string.Format("v {0} {1} {2}\n",v.x,v.y,v.z));
    		}
    		sb.Append("\n");
    		foreach(Vector3 nn in m.normals) 
    		{
    			Vector3 v = r * nn;
    			sb.Append(string.Format("vn {0} {1} {2}\n",v.x,v.y,v.z));
    		}
    		sb.Append("\n");
    		foreach(Vector3 v in m.uv) 
    		{
    			sb.Append(string.Format("vt {0} {1}\n",v.x,v.y));
    		}
    		for (int material=0; material < m.subMeshCount; material ++) 
    		{
    			sb.Append("\n");
    			sb.Append("usemtl ").Append(mats[material].name).Append("\n");
    			sb.Append("usemap ").Append(mats[material].name).Append("\n");
     
    			int[] triangles = m.GetTriangles(material);
    			for (int i=0;i<triangles.Length;i+=3) {
    				sb.Append(string.Format("f {0}/{0}/{0} {1}/{1}/{1} {2}/{2}/{2}\n", 
    					triangles[i]+1+StartIndex, triangles[i+1]+1+StartIndex, triangles[i+2]+1+StartIndex));
    			}
    		}
     
    		StartIndex += numVertices;
    		return sb.ToString();
    	}
    }
     
    public class ObjExporter : ScriptableObject
    {
    	public static void DoExport(GameObject obj)
    	{
    		
    		if (obj == null)
    		{
    			return;
    		}
     
    		string meshName = obj.name;
    		//string fileName = EditorUtility.SaveFilePanel("Export .obj file", "", meshName, "obj");
     		string filePath = "Test/" + meshName + ".obj";
    		ObjExporterScript.Start();
     
    		StringBuilder meshString = new StringBuilder();
     
    		meshString.Append("#" + meshName + ".obj"
    							+ "\n#" + System.DateTime.Now.ToLongDateString() 
    							+ "\n#" + System.DateTime.Now.ToLongTimeString()
    							+ "\n#-------" 
    							+ "\n\n");
     
    		Transform t = obj.transform;
     
    		Vector3 originalPosition = t.position;
    		t.position = Vector3.zero;
    		meshString.Append("g ").Append(t.name).Append("\n");
    		
    		meshString.Append(processTransform(t, true));
     
    		WriteToFile(meshString.ToString(),filePath);
     
    		t.position = originalPosition;
     
    		ObjExporterScript.End();
    		//Debug.Log("Exported Mesh: " + filePath);
    	}
     
    	static string processTransform(Transform t, bool makeSubmeshes)
    	{
    		StringBuilder meshString = new StringBuilder();
     
    		meshString.Append("#" + t.name
    						+ "\n#-------" 
    						+ "\n");
     
    		if (makeSubmeshes)
    		{
    			meshString.Append("g ").Append(t.name).Append("\n");
    		}
     
    		MeshFilter mf = t.GetComponent<MeshFilter>();
    		if (mf)
    		{
    			meshString.Append(ObjExporterScript.MeshToString(mf, t));
    		}
     
    		for(int i = 0; i < t.childCount; i++)
    		{
    			meshString.Append(processTransform(t.GetChild(i), makeSubmeshes));
    		}
     
    		return meshString.ToString();
    	}
     
    	static void WriteToFile(string s, string filename)
    	{
    		using (StreamWriter sw = new StreamWriter(filename)) 
    		{
    			sw.Write(s);
    		}
    	}
    }

这个主要参考http://wiki.unity3d.com/index.php?title=ExportOBJ这个文章，它这个用的编辑器类，我改成了脚本类，我看了看，就是把信息转存了一下。

然后我测试使用

using UnityEngine;
    using System.Collections;
    using System.IO;
    public class Test : MonoBehaviour {
    	public GameObject parentObj;
    	void Start () {
    	   GetFiles("/Users/dilitech/Downloads/test");
    	}
    	
    	// Update is called once per frame
    	void Update () {
    	
    	}
    	private void GetFiles(string folder)
     	{
    		string[] files = Directory.GetFiles(folder, "*.unity3d*", SearchOption.AllDirectories);
    		for (int i = 0; i < files.Length; i++)
    		{
    			
    			string path = "file://"+files[i];
    			StartCoroutine_Auto( loadSingle(path));
    			//files[i] = Path.GetFileNameWithoutExtension(files[i]);
    		}
    		
    	}
    	GameObject obj = null;
    	IEnumerator loadSingle(string path){
    		WWW www = new WWW (path);  
    		yield return 0;
    		if(parentObj.transform.childCount>0){
    			Destroy(parentObj.transform.GetChild(0).gameObject);
    		}
    		obj = Instantiate(www.assetBundle.mainAsset) as GameObject;
    		obj.transform.parent = parentObj.transform;
    		ObjExporter.DoExport(obj);
    	}
    }

就可以将 /Users/dilitech/Downloads/test这个文件下的资源文件解包到当前工程的Test文件夹下都是.obj格式，其实Texture相对这个异曲同工，可以自己写下。因为资源文件是.\*格式，我的是 .unity格式，所以要加载到场景中才能转成.obj文件。我测试用例，大家试着改改，共同进步。