/// <summary>
/// 加载N宫格
/// </summary>
/// <param name="idx"></param>
void LoadCurrNTrunk(Vector2_Bit idx)
{
for (int i = 0; i < trunkEdgeNum; i++)
{
for (int j = 0; j < trunkEdgeNum; j++)
{
//idx 是N宫格的中心，idx.x - trunkOffset 是左下角
Vector2_Bit idxTrunk = new Vector2_Bit(i + idx.x - trunkOffset, j + idx.y - trunkOffset);
string path = string.Format("terrainslicing/{0}/{1}_{2}_{3}",
slicingData.terrainName, slicingData.terrainName,
idxTrunk.x, idxTrunk.y);
GameObject trunkGo = null;
if (!trunkDic.TryGetValue(idxTrunk.BitData, out trunkGo))
{
trunkDic.Add(idxTrunk.BitData, null);
ResHelper.LoadGameObjectAsync(path, (getter) =>
{
trunkGo = getter.Get();
float x = trunkSize.x * idxTrunk.x;
float y = trunkSize.y * idxTrunk.y;
trunkGo.transform.position = new Vector3(x, 0, y);
trunkGo.transform.SetParent(terrainRootTrans);
trunkDic[idxTrunk.BitData] = trunkGo;
});
}
}
}
}
void LoadTrunkAsync(Vector3 pos)
{
int NonNullCount = trunkDic.GetNonNullCount();//GetTrunkDicNonCount();
if (NonNullCount < (trunkEdgeNum * trunkEdgeNum) && NonNullCount != 0)
{
return;
}
Vector2_Bit idx = LocateTrunk(pos);
//加载当前的N宫格
LoadCurrNTrunk(idx);
//释放之前N宫格不在当前N宫格内的trunk
UnLoadPreNTrunk(idx);
}
/// <summary>
/// 释放之前N宫格不在当前N宫格内的trunk
/// 因为是异步加载，可能本次释放不完。
/// </summary>
/// <param name="idx"></param>
void UnLoadPreNTrunk(Vector2_Bit idx)
{
int x = idx.x;
int y = idx.y;
if (trunkDic.GetNonNullCount() <= (trunkEdgeNum * trunkEdgeNum))
{
return;
}
unloadTrunkLst.Clear();
foreach (var kv in trunkDic)
{
Vector2_Bit preIdx = new Vector2_Bit(kv.Key);
int preX = preIdx.x;
int preY = preIdx.y;
if (Mathf.Abs(preX - x) > trunkOffset || Mathf.Abs(preY - y) > trunkOffset)
{
//Debug.Log(preIdx);
if (kv.Value != null)
{
ResHelper.DestroyGameObject(kv.Value);
unloadTrunkLst.Add(kv.Key);
}
}
}
for (int i = 0; i < unloadTrunkLst.Count; i++)
{
trunkDic.Remove(unloadTrunkLst[i]);
}
//释放bundle
ResHelper.RealseAllUnUse();
}
