/// <summary>
/// 此种方式只能加载需要预加载的依赖包
/// </summary>
/// <param name="bundleName"></param>
/// <param name="completeCallback"></param>
/// <param name="cacheTimeout"></param>
public void LoadBundle(string bundleName, Action <string> completeCallback = null)
{
if (!CheckInited())
{
if (completeCallback != null)
{
completeCallback("");
}
return;
}
var bundleLoader = new KTBundleLoader()
{
requestBundleName = bundleName,
cacheType = BundleCacheType.Share,
request = AssetBundle.LoadFromFileAsync(bundleName),
completeCallback = completeCallback
};
m_bundleLoading.Add(bundleName, bundleLoader);
IncreaseRef(bundleName);
}
/// <summary>
/// 处理m_assetLoading中加载完成的asset回调资源或尚未加载的bundle加入到m_bundleLoading中
/// </summary>
private void UpdateAssetLoader()
{
var namesToDeleteAsset = new List <string>();
foreach (var item in m_assetLoading)
{
if (item.Value.loaderType == KTAssetLoader.LoaderType.Asset)
{
if (item.Value.request == null)//尚未请求资源
{
var allBundleLoaded = IsBundleAvailable(item.Value.requestBundleName);
if (allBundleLoaded)
{
var bundleInfo = m_bundleLoaded[item.Value.requestBundleName];
item.Value.request = bundleInfo.bundle.LoadAssetAsync(item.Value.requestAssetName);
item.Value.isAllBundleLoaded = allBundleLoaded;
}
else
{
if (item.Value.isAllBundleLoading)
{
continue;
}
//把没在loading中的KTBundleLoader加入到loading中
var toLoadBundles = item.Value.dependentBundleNames.Where(name =>
{
return(!m_bundleLoaded.ContainsKey(name) && !m_bundleLoading.ContainsKey(name));//保证不会被正在加载的bundleLoader覆盖cacheType
});
toLoadBundles.ToList().ForEach(name =>
{
var bundleLoader = new KTBundleLoader()
{
requestBundleName = item.Value.requestBundleName,
cacheType = item.Value.cacheType,
cacheTimeout = item.Value.cacheTimeout,
request = AssetBundle.LoadFromFileAsync(item.Value.requestBundleName)
};
m_bundleLoading.Add(item.Value.requestBundleName, bundleLoader);
AddAssetWaitingBundle(item.Key, item.Value.requestBundleName);
});
item.Value.isAllBundleLoading = true;
continue;
}
}
if (item.Value.request.isDone)
{
//相关依赖包增加引用计数
item.Value.dependentBundleNames.ForEach(bundleName =>
{
m_bundleLoaded[bundleName].refCount++;
});
m_assetNameToWeakPtr.Add(item.Key, new WeakReference(item.Value.request.asset));
//回调所有请求
item.Value.completeCallbackList.ForEach(callback =>
{
callback(item.Key, item.Value.request.asset);
namesToDeleteAsset.Add(item.Key);
});
//根据情况销毁已加载的请求的bundle,不过如果存在不同的资源都使用了同一个bundle的情况，要在所有asset请求返回后再删除bundle,所以，需要延后处理
}
}
else if (item.Value.loaderType == KTAssetLoader.LoaderType.Scene)
{
if (item.Value.sceneRequest == null)//尚未请求资源
{
var allBundleLoaded = IsBundleAvailable(item.Value.requestBundleName);
if (allBundleLoaded)
{
var bundleInfo = m_bundleLoaded[item.Value.requestBundleName];
item.Value.sceneRequest = SceneManager.LoadSceneAsync(item.Value.requestAssetName, item.Value.loadMode);
item.Value.isAllBundleLoaded = allBundleLoaded;
}
else
{
if (item.Value.isAllBundleLoading)
{
continue;
}
//把没在loading中的KTBundleLoader加入到loading中
var toLoadBundles = item.Value.dependentBundleNames.Where(name =>
{
return(!m_bundleLoaded.ContainsKey(name) && !m_bundleLoading.ContainsKey(name));
});
toLoadBundles.ToList().ForEach(name =>
{
var bundleLoader = new KTBundleLoader()
{
requestBundleName = item.Value.requestBundleName,
cacheType = item.Value.cacheType,
cacheTimeout = item.Value.cacheTimeout,
request = AssetBundle.LoadFromFileAsync(item.Value.requestBundleName)
};
m_bundleLoading.Add(item.Value.requestBundleName, bundleLoader);
AddAssetWaitingBundle(item.Key, item.Value.requestBundleName); //不同场景可能会同时请求一个bundle，所以此处与加载其他asset一样
});
item.Value.isAllBundleLoading = true;
continue;
}
}
if (item.Value.sceneRequest.isDone)
{
//相关依赖包增加引用计数
item.Value.dependentBundleNames.ForEach(bundleName =>
{
m_bundleLoaded[bundleName].refCount++;
});
m_assetNameToWeakPtr.Add(item.Key, new WeakReference(item.Value.request.asset));
//回调所有请求
item.Value.sceneCompleteCallback(item.Key);
namesToDeleteAsset.Add(item.Key);
//根据情况销毁已加载的请求的bundle,不过如果存在不同的资源都使用了同一个bundle的情况，要在所有asset请求返回后再删除bundle,所以，需要延后处理
}
}
}
//删除所有请求
namesToDeleteAsset.ForEach(name =>
{
if (m_assetLoading.ContainsKey(name))
{
//清除掉所有等待bundleLoader的assetLoader关系信息
var assetLoader = m_assetLoading[name];
assetLoader.dependentBundleNames.ForEach(bundleName => DelAssetWaitingBundle(bundleName));
m_assetLoading[name].Dispose();
m_assetLoading.Remove(name);
}
});
}
