protected virtual bool CheckUnload(LevelSegment l)
{
bool did = false;
switch (direction2D)
{
case Direction2D.down:
{
Vector3 mpoint = traceCamera.ScreenToWorldPoint(new Vector3(0, Screen.height, 0));
did = l.gameObject.transform.position.y - l.segmentLength > mpoint.y;
if (!did)
{
//check if load too far away from postion when camera move back
float lead = GetCommingLead(l.gameObject.transform.position);
if (lead > 2 * loadSegmentLead)
{
Log.Debug("unloaded too far. {0}", l);
did = true;
}
}
break;
}
default:
throw new System.Exception(String.Format("have not implement for direction {0}", direction2D));
}
return(did);
}
void PauseChildren(bool pause)
{
foreach (SegmentKV skv in _loadedSegments)
{
LevelSegment l = skv.level;
// Log.Debug ("pause {0}",l.gameObject.name);
PauseLevelSegment(l, pause);
}
}
void PauseLevelSegment(LevelSegment l, bool pause)
{
PauseAble[] ps = l.GetComponentsInChildren <PauseAble>();
if (null == ps)
{
return;
}
foreach (PauseAble item in ps)
{
if (pause)
{
item.OnPause();
}
else
{
item.OnResume();
}
}
}
void LoadedRsSegment(LevelSegment lseg, LevelSegmentMeta meta)
{
if (meta.state == LevelSegmentMeta.LoadState.loaded)
{
Log.Debug("ignore lated segment load. {0}", meta);
return;
}
lseg = Instantiate(lseg);
meta.state = LevelSegmentMeta.LoadState.loaded;
lseg.gameObject.transform.position = meta.position;
lseg.gameObject.transform.SetParent(copyParent);
SegmentKV skv = new SegmentKV();
skv.level = lseg;
skv.meta = meta;
_loadedSegments.Add(skv);
Log.Debug("LOAD SEGMENT:{0}", lseg);
}
public void ManageSegment()
{
if (null == metas)
{
metas = new List <LevelSegmentMeta>();
}
// Log.Debug("ManageSegment {0} -- {1}", metas.Count, metaCount);
//async loaded
foreach (RequestKV rkv in _aysncLoadRequest)
{
ResourceRequest rr = rkv.request;
if (!rr.isDone)
{
continue;
}
_needRemoveRequest.Add(rkv);
UnityEngine.Object obj = rr.asset;
Log.Debug("{0} async load done {1}.", rkv.meta.prefPath, obj);
// LevelSegment lseg = Instantiate (obj) as LevelSegment;
LoadedRsSegment(obj as LevelSegment, rkv.meta);
}
foreach (RequestKV l in _needRemoveRequest)
{
_aysncLoadRequest.Remove(l);
}
_needRemoveRequest.Clear();
//start load
foreach (LevelSegmentMeta meta in metas)
{
if (meta.state == LevelSegmentMeta.LoadState.loaded)
{
// Log.Debug("haveloaded segment 1.1 {0}", meta);
continue;
}
float lead = GetCommingLead(meta.position);
// Log.Debug ("{0} lead is {1}",meta,lead);
if (lead < 0)
{
lead = GetLeavingLead(meta.position, meta.length);
if (lead >= 0)
{
//have left screen
continue;
}
else
{
//need force load
Log.Debug("force load segment 1 {0}", meta);
LevelSegment seg = Resources.Load <LevelSegment>(meta.prefPath);
LoadedRsSegment(seg, meta);
}
}
else if (Math.Abs(lead) < Mathf.Epsilon)
{
//need force load
Log.Debug("force load segment 2 {0}", meta);
LevelSegment seg = Resources.Load <LevelSegment>(meta.prefPath);
LoadedRsSegment(seg, meta);
}
else if (meta.state == LevelSegmentMeta.LoadState.not || meta.state == LevelSegmentMeta.LoadState.unloaded)
{
if (lead <= loadSegmentLead)
{
ResourceRequest req = Resources.LoadAsync <LevelSegment>(meta.prefPath);
RequestKV rkv = new RequestKV();
rkv.request = req;
rkv.meta = meta;
_aysncLoadRequest.Add(rkv);
meta.state = LevelSegmentMeta.LoadState.loading;
}
}
else if (meta.state == LevelSegmentMeta.LoadState.loading)
{
//force load
if (lead <= forceLoadSegmentLead)
{
Log.Debug("force load segment 3 {0}", meta);
LevelSegment seg = Resources.Load <LevelSegment>(meta.prefPath);
// seg = Instantiate (seg);
LoadedRsSegment(seg, meta);
}
}
}
//remove
foreach (SegmentKV skv in _loadedSegments)
{
LevelSegment l = skv.level;
if (CheckUnload(l))
{
Log.Info("segment {0}:{1} need unload.", l.gameObject.name, l.gameObject.transform.position);
_needRemoveSegments.Add(skv);
}
}
bool needClean = _needRemoveSegments.Count > 0;
foreach (SegmentKV l in _needRemoveSegments)
{
// Resources.UnloadAsset (l.meta.loadedAsset);
_loadedSegments.Remove(l);
UnityEngine.Object.Destroy(l.level.gameObject);
l.meta.state = LevelSegmentMeta.LoadState.unloaded;
Log.Debug("UNLOAD SEGMENT:{0}", l.meta);
}
_needRemoveSegments.Clear();
if (needClean)
{
Resources.UnloadUnusedAssets();
}
}