public virtual Page GetPage(PageID pageID)
{
Page page;
this.mPages.TryGetValue(pageID, out page);
return(page);
}
public virtual void FrameEnd(Real timeElapsed)
{
this.mStrategy.FrameEnd(timeElapsed, this);
var ids = new PageID[this.mPages.Count];
this.mPages.Keys.CopyTo(ids, 0);
for (int i = 0; i < this.mPages.Count; ++i)
{
// if this page wasn't used, unload
Page p = this.mPages[ids[i]];
if (!p.IsHeld)
{
UnloadPage(p);
// update indices since unloading will invalidate it
ids = new PageID[this.mPages.Count];
this.mPages.Keys.CopyTo(ids, 0);
// pre-decrement since unloading will remove it
--i;
}
else
{
p.FrameEnd(timeElapsed);
}
}
}
public override void NotifyCamera(Camera cam, PagedWorldSection section)
{
var stratData = (Grid2DPageStrategyData)section.StrategyData;
Vector3 pos = cam.DerivedPosition;
Vector2 gridpos = Vector2.Zero;
stratData.ConvertWorldToGridSpace(pos, ref gridpos);
int x, y;
stratData.DetermineGridLocation(gridpos, out x, out y);
Real loadRadius = stratData.LoadRadiusInCells;
Real holdRadius = stratData.HoldRadiusInCells;
//scan the whole hold range
Real fxmin = (Real)x - holdRadius;
Real fxmax = (Real)x + holdRadius;
Real fymin = (Real)y - holdRadius;
Real fymax = (Real)y + holdRadius;
int xmin = stratData.CellRangeMinX;
int xmax = stratData.CellRangeMaxX;
int ymin = stratData.CellRangeMinY;
int ymax = stratData.CellRangeMaxY;
// Round UP max, round DOWN min
xmin = fxmin < xmin ? xmin : (int)System.Math.Floor(fxmin);
xmax = fxmax > xmax ? xmax : (int)System.Math.Ceiling(fxmax);
ymin = fymin < ymin ? ymin : (int)System.Math.Floor(fymin);
ymax = fymax > ymax ? ymax : (int)System.Math.Ceiling(fymax);
// the inner, active load range
fxmin = (Real)x - loadRadius;
fxmax = (Real)x + loadRadius;
fymin = (Real)y - loadRadius;
fymax = (Real)y + loadRadius;
// Round UP max, round DOWN min
int loadxmin = fxmin < xmin ? xmin : (int)System.Math.Floor(fxmin);
int loadxmax = fxmax > xmax ? xmax : (int)System.Math.Ceiling(fxmax);
int loadymin = fymin < ymin ? ymin : (int)System.Math.Floor(fymin);
int loadymax = fymax > ymax ? ymax : (int)System.Math.Ceiling(fymax);
for (int cy = ymin; cy <= ymax; ++cy)
{
for (int cx = xmin; cx <= xmax; ++cx)
{
PageID pageID = stratData.CalculatePageID(cx, cy);
if (cx >= loadxmin && cx <= loadxmax && cy >= loadymin && cy <= loadymax)
{
// in the 'load' range, request it
section.LoadPage(pageID);
}
else
{
// in the outer 'hold' range, keep it but don't actively load
section.HoldPage(pageID);
}
// other pages will by inference be marked for unloading
}
}
}
public virtual Page LoadOrCreatePage(Vector3 worldPos)
{
PageID id = GetPageID(worldPos);
// this will create a Page instance no matter what, even if load fails
// we force the load attempt to happen immediately (forceSynchronous)
LoadPage(id, true);
return(GetPage(id));
}
public virtual void HoldPage(PageID pageID)
{
Page page;
if (this.mPages.TryGetValue(pageID, out page))
{
page.Touch();
}
}
public void CalculateCell(PageID inPageID, out int x, out int y)
{
// inverse of calculatePageID
// unsigned versions
var y16 = (UInt16)(inPageID.Value & 0xFFFF);
var x16 = (UInt16)((inPageID.Value >> 16) & 0xFFFF);
x = (Int16)x16;
y = (Int16)y16;
}
public Page(PageID pageID, PagedWorldSection parent)
: base()
{
this.mID = pageID;
this.mParent = parent;
WorkQueue wq = Root.Instance.WorkQueue;
this.workQueueChannel = wq.GetChannel("Axiom/Page");
wq.AddRequestHandler(this.workQueueChannel, this);
wq.AddResponseHandler(this.workQueueChannel, this);
Touch();
}
public virtual void UnloadPage(PageID pageID, bool forceSynchonous)
{
if (!this.mParent.Manager.ArePagingOperationsEnabled)
{
return;
}
if (this.mPages.ContainsKey(pageID))
{
Page page = this.mPages[pageID];
this.mPages.Remove(pageID);
page.UnLoad();
page.SafeDispose();
}
}
public virtual StreamSerializer ReadPageStream(PageID pageID)
{
StreamSerializer stream = null;
if (this.mPageProvider != null)
{
stream = this.mPageProvider.ReadPageStream(pageID, this);
}
if (stream == null)
{
stream = this.mParent.ReadPageStream(pageID, this);
}
return(stream);
}
public StreamSerializer WritePageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (this.mPageProvider != null)
{
ser = this.mPageProvider.WritePageStream(pageId, section);
}
if (ser == null)
{
ser = this.mManager.WritePageStream(pageId, section);
}
return(ser);
}
internal StreamSerializer ReadPageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (this.mPageProvider != null)
{
ser = this.mPageProvider.ReadPageStream(pageId, section);
}
if (ser == null)
{
ser = this.mManager.ReadPageStream(pageId, section);
}
return(ser);
}
public StreamSerializer WritePageStream(PageID pageID)
{
StreamSerializer stream = null;
if (this.mPageProvider != null)
{
stream = this.mPageProvider.WritePageStream(pageID, this);
}
if (stream == null)
{
stream = this.mParent.WritePageStream(pageID, this);
}
return(stream);
}
public virtual void LoadPage(PageID pageID, bool forceSynchronous)
{
if (!this.mParent.Manager.ArePagingOperationsEnabled)
{
return;
}
if (!this.mPages.ContainsKey(pageID))
{
var page = new Page(pageID, this);
page.Load(forceSynchronous);
this.mPages.Add(pageID, page);
}
else
{
this.mPages[pageID].Touch();
}
}
internal StreamSerializer ReadPageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (this.mPageProvider != null)
{
ser = this.mPageProvider.ReadPageStream(pageId, section);
}
if (ser == null)
{
// use default implementation
string nameStr = string.Format("{0}_{1}_{2}.page", section.World.Name, section.Name, pageId);
var stream = ResourceGroupManager.Instance.OpenResource(nameStr);
ser = new StreamSerializer(stream);
}
return(ser);
}
internal StreamSerializer WritePageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (this.mPageProvider != null)
{
ser = this.mPageProvider.WritePageStream(pageId, section);
}
if (ser == null)
{
// use default implementation
string nameStr = string.Format("{0}_{1}_{2}.page", section.World.Name, section.Name, pageId);
// create file, overwrite if necessary
var stream = ResourceGroupManager.Instance.CreateResource(nameStr, this.mPageResourceGroup, true);
ser = new StreamSerializer(stream);
}
return(ser);
}
public virtual void LoadPage( PageID pageID, bool forceSynchronous )
{
if ( !this.mParent.Manager.ArePagingOperationsEnabled )
{
return;
}
if ( !this.mPages.ContainsKey( pageID ) )
{
var page = new Page( pageID, this );
page.Load( forceSynchronous );
this.mPages.Add( pageID, page );
}
else
{
this.mPages[ pageID ].Touch();
}
}
public void UnloadPage(PageID pageId)
{
UnloadPage(pageId, false);
}
public virtual void UnloadPage( PageID pageID, bool forceSynchonous )
{
if ( !this.mParent.Manager.ArePagingOperationsEnabled )
{
return;
}
if ( this.mPages.ContainsKey( pageID ) )
{
Page page = this.mPages[ pageID ];
this.mPages.Remove( pageID );
page.UnLoad();
page.SafeDispose();
}
}
public virtual StreamSerializer WritePageStream(PageID pageId, PagedWorldSection section)
{
return(null);
}
/// <summary>
/// Page class
/// </summary>
/// <param name="pageID"></param>
public Page(PageID pageID)
{
mID = pageID;
Touch();
}
public Page( PageID pageID, PagedWorldSection parent )
: base()
{
this.mID = pageID;
this.mParent = parent;
WorkQueue wq = Root.Instance.WorkQueue;
this.workQueueChannel = wq.GetChannel( "Axiom/Page" );
wq.AddRequestHandler( this.workQueueChannel, this );
wq.AddResponseHandler( this.workQueueChannel, this );
Touch();
}
/// <summary>
/// Ask for a page to be loaded with the given (section-relative) PageID
/// </summary>
/// <param name="pageID">The page ID to load</param>
public void LoadPage(PageID pageID)
{
LoadPage(pageID, false);
}
public virtual void FrameEnd( Real timeElapsed )
{
this.mStrategy.FrameEnd( timeElapsed, this );
var ids = new PageID[this.mPages.Count];
this.mPages.Keys.CopyTo( ids, 0 );
for ( int i = 0; i < this.mPages.Count; ++i )
{
// if this page wasn't used, unload
Page p = this.mPages[ ids[ i ] ];
if ( !p.IsHeld )
{
UnloadPage( p );
// update indices since unloading will invalidate it
ids = new PageID[this.mPages.Count];
this.mPages.Keys.CopyTo( ids, 0 );
// pre-decrement since unloading will remove it
--i;
}
else
{
p.FrameEnd( timeElapsed );
}
}
}
/// <summary>
///
/// </summary>
/// <param name="pageId"></param>
/// <param name="section"></param>
/// <returns></returns>
public StreamSerializer WritePageStream(PageID pageId, PagedWorldSection section)
{
return null;
}
/// <summary>
/// Get a serialiser set up to read PagedWorld data for the given world filename.
/// </summary>
/// <param name="pageId"></param>
/// <param name="section"></param>
/// <returns></returns>
public virtual StreamSerializer ReadPageStream(PageID pageId, PagedWorldSection section)
{
return null;
}
public override void UnloadPage( PageID pageID, bool forceSynchonous )
{
if ( !mParent.Manager.ArePagingOperationsEnabled )
{
return;
}
base.UnloadPage( pageID, forceSynchonous );
// trigger terrain unload
long x, y;
// pageID is the same as a packed index
this.terrainGroup.UnpackIndex( pageID.Value, out x, out y );
this.terrainGroup.UnloadTerrain( x, y );
}
public override void LoadPage( PageID pageID, bool forceSynchronous )
{
if ( !mParent.Manager.ArePagingOperationsEnabled )
{
return;
}
if ( mPages.ContainsKey( pageID ) )
{
// trigger terrain load
long x, y;
// pageID is the same as a packed index
this.terrainGroup.UnpackIndex( pageID.Value, out x, out y );
this.terrainGroup.DefineTerrain( x, y );
this.terrainGroup.LoadTerrain( x, y, forceSynchronous );
}
base.LoadPage( pageID, forceSynchronous );
}
/// <summary>
///
/// </summary>
/// <param name="pageId"></param>
/// <param name="section"></param>
/// <returns></returns>
public StreamSerializer WritePageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (mPageProvider != null)
ser = mPageProvider.WritePageStream(pageId, section);
if (ser == null)
{
// use default implementation
string nameStr = string.Empty;
nameStr += section.World.Name + "_" + section.Name + "_" + pageId.Value + ".page";
// create file, overwrite if necessary
}
throw new NotImplementedException();
}
/// <summary>
///
/// </summary>
/// <param name="pageId"></param>
/// <param name="section"></param>
/// <returns></returns>
public StreamSerializer ReadPageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (mPageProvider != null)
ser = mPageProvider.ReadPageStream(pageId, section);
if (ser == null)
{
// use default implementation
string nameStr = string.Empty;
nameStr += section.World.Name + "_" + section.Name + "_" + pageId.Value + ".page";
Stream stream = ResourceGroupManager.Instance.OpenResource(nameStr);
ser = new StreamSerializer(stream);
}
return ser;
}
/// <summary>
/// Ask for a page to be unloaded with the given (section-relative) PageID
/// </summary>
/// <param name="pageId">The page ID to unload</param>
public void UnloadPage(PageID pageId)
{
UnloadPage(pageId, false);
}
/// <summary>
///
/// </summary>
/// <param name="inPageID"></param>
/// <param name="row"></param>
/// <param name="col"></param>
public void CalculateRowCol(PageID inPageID, ref int row, ref int col)
{
// inverse of calculatePageID
row = inPageID.Value / mGridExtentsHorz;
col = inPageID.Value % mGridExtentsHorz;
}
/// <summary>
/// Ask for a page to be kept in memory if it's loaded.
/// </summary>
/// <param name="pageID"></param>
public virtual void HoldPage(PageID pageID)
{
Page page;
if (mPages.TryGetValue(pageID, out page))
page.Touch();
}
public void CalculateCell( PageID inPageID, out int x, out int y )
{
// inverse of calculatePageID
// unsigned versions
var y16 = (UInt16)( inPageID.Value & 0xFFFF );
var x16 = (UInt16)( ( inPageID.Value >> 16 ) & 0xFFFF );
x = (Int16)x16;
y = (Int16)y16;
}
/// <summary>
/// Get a serialiser set up to write Page data for the given PageID.
/// </summary>
/// <param name="pageID"></param>
public StreamSerializer WritePageStream(PageID pageID)
{
StreamSerializer stream = null;
if (mPageProvider != null)
stream = mPageProvider.WritePageStream(pageID, this);
if (stream == null)
stream = mParent.WritePageStream(pageID, this);
return stream;
}
internal StreamSerializer WritePageStream( PageID pageId, PagedWorldSection section )
{
StreamSerializer ser = null;
if ( this.mPageProvider != null )
{
ser = this.mPageProvider.WritePageStream( pageId, section );
}
if ( ser == null )
{
// use default implementation
string nameStr = string.Format( "{0}_{1}_{2}.page", section.World.Name, section.Name, pageId );
// create file, overwrite if necessary
var stream = ResourceGroupManager.Instance.CreateResource( nameStr, this.mPageResourceGroup, true );
ser = new StreamSerializer( stream );
}
return ser;
}
public virtual StreamSerializer ReadPageStream( PageID pageID )
{
StreamSerializer stream = null;
if ( this.mPageProvider != null )
{
stream = this.mPageProvider.ReadPageStream( pageID, this );
}
if ( stream == null )
{
stream = this.mParent.ReadPageStream( pageID, this );
}
return stream;
}
/// <summary>
/// Ask for a page to be loaded with the given (section-relative) PageID
/// </summary>
/// <param name="pageID">The page ID to load</param>
/// <param name="forceSynchronous">If true, the page will always be loaded synchronously</param>
public virtual void LoadPage(PageID pageID, bool forceSynchronous)
{
Page page;
if (!mPages.TryGetValue(pageID, out page))
{
page = new Page(pageID);
// attach page immediately, but notice that it's not loaded yet
AttachPage(page);
Manager.Queue.LoadPage(page, this, forceSynchronous);
}
else
page.Touch();
}
/// <summary>
/// Get a serialiser set up to write Page data for the given PageID.
/// </summary>
/// <param name="pageId"></param>
/// <param name="section"></param>
/// <returns></returns>
public StreamSerializer WritePageStream(PageID pageId, PagedWorldSection section)
{
StreamSerializer ser = null;
if (mPageProvider != null)
ser = mPageProvider.WritePageStream(pageId, section);
if (ser == null)
ser = mManger.WritePageStream(pageId, section);
return ser;
}
/// <summary>
/// Ask for a page to be unloaded with the given (section-relative) PageID
/// </summary>
/// <param name="pageID">The page ID to unload</param>
/// <param name="forceSynchonous">If true, the page will always be unloaded synchronously</param>
public virtual void UnloadPage(PageID pageID, bool forceSynchonous)
{
Page page;
if (mPages.TryGetValue(pageID, out page))
{
mPages.Remove(pageID);
page.NotifyAttached(null);
Manager.Queue.UnLoadPage(page, this, forceSynchonous);
}
}
public StreamSerializer WritePageStream( PageID pageId, PagedWorldSection section )
{
StreamSerializer ser = null;
if ( this.mPageProvider != null )
{
ser = this.mPageProvider.WritePageStream( pageId, section );
}
if ( ser == null )
{
ser = this.mManager.WritePageStream( pageId, section );
}
return ser;
}
/// <summary>
/// Retrieves a Page.
/// </summary>
/// <param name="pageID"></param>
/// <returns></returns>
public virtual Page GetPage(PageID pageID)
{
Page page;
mPages.TryGetValue(pageID, out page);
return page;
}
/// <summary>
/// Ask for a page to be loaded with the given (section-relative) PageID
/// </summary>
/// <remarks>
/// You would not normally call this manually, the PageStrategy is in
/// charge of it usually.
/// If this page is already loaded, this request will not load it again.
/// If the page needs loading, then it may be an asynchronous process depending
/// on whether threading is enabled.
/// </remarks>
/// <param name="pageID">The page ID to load</param>
public void LoadPage(PageID pageID)
{
LoadPage(pageID, false);
}
internal StreamSerializer ReadPageStream( PageID pageId, PagedWorldSection section )
{
StreamSerializer ser = null;
if ( this.mPageProvider != null )
{
ser = this.mPageProvider.ReadPageStream( pageId, section );
}
if ( ser == null )
{
ser = this.mManager.ReadPageStream( pageId, section );
}
return ser;
}
internal StreamSerializer ReadPageStream( PageID pageId, PagedWorldSection section )
{
StreamSerializer ser = null;
if ( this.mPageProvider != null )
{
ser = this.mPageProvider.ReadPageStream( pageId, section );
}
if ( ser == null )
{
// use default implementation
string nameStr = string.Format( "{0}_{1}_{2}.page", section.World.Name, section.Name, pageId );
var stream = ResourceGroupManager.Instance.OpenResource( nameStr );
ser = new StreamSerializer( stream );
}
return ser;
}
