/// <summary>
/// 导出一个指定的包
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
static bool BuildPackage(PackageInfo info, BuildTarget buildTarget)
{
//打包package下的所有资源
UnityEngine.Object[] arrAssetObject = new UnityEngine.Object[info.packageAssets.Length];
string[] arrAssetNameInPackage = new string[info.packageAssets.Length];
for (int i = 0; i < info.packageAssets.Length; ++i)
{
string assetPath = info.packageAssets[i];
arrAssetObject[i] = AssetDatabase.LoadMainAssetAtPath(assetPath);
arrAssetNameInPackage[i] = GetAssetNameInPackage(assetPath).ToLower();//包中物体的名字，目前是相对与package目录的完整路径，以后可以修改
CheckAssetValid(assetPath, arrAssetObject[i]);
}
//这里使用CollectDependencies，但是由于外层使用了PushDependcies，所以依赖项可能是在其他的包中
string strOutputPath = info.GetBundlePath(buildTarget);// BuilderTools.GetOutputPath(buildTarget) + info.packageName + BUNDLE_EXT;
BuildPipeline.BuildAssetBundleExplicitAssetNames(arrAssetObject, arrAssetNameInPackage, strOutputPath
, BuildAssetBundleOptions.CollectDependencies | BuildAssetBundleOptions.CompleteAssets | BuildAssetBundleOptions.DeterministicAssetBundle, buildTarget);
//生成信息文件
string strPackageInfoFilePath = info.GetInfoPath(buildTarget);// BuilderTools.GetOutputPath(buildTarget) + info.packageName + PACKAGE_INFO_EXT;
WritePackageInfoFile(strPackageInfoFilePath, info.ltDepPackages);
//生成版本信息文件，依赖项的信息要做为md5的一部分
string strVersionFilePath = info.GetVersionPath(buildTarget);
string strVersion = BuilderTools.GetVerifyString(new string[] { strPackageInfoFilePath }, new string[] { info.packagePath });
File.WriteAllText(strVersionFilePath, strVersion);
//写入统一的dat文件
string strDataFilePath = info.GetDataPath(buildTarget);// BuilderTools.GetOutputPath(buildTarget) + info.packageName + DATA_EXT;
CombineFinalPackage(strPackageInfoFilePath, strOutputPath, strDataFilePath);
Debug.Log("writed output file: " + strDataFilePath);
return true;
}