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varregion: send terrain patches from where the avatar outward if the parameter 

[Terrain]SendTerrainUpdatesByViewDistance=true.
This tracks which patches have been sent to each client and outputs the
patches as the avatar moves.
bullet-2.82
Robert Adams 2014-03-16 21:31:38 -07:00
parent eaf595c008
commit db5a42ffac
3 changed files with 274 additions and 36 deletions
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268
OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs
View File

@ -99,6 +99,84 @@ namespace OpenSim.Region.CoreModules.World.Terrain
private String m_InitialTerrain = "pinhead-island";
// If true, send terrain patch updates to clients based on their view distance
private bool m_sendTerrainUpdatesByViewDistance = false;
// Class to keep the per client collection of terrain patches that must be sent.
// A patch is set to 'true' meaning it should be sent to the client. Once the
// patch packet is queued to the client, the bit for that patch is set to 'false'.
private class PatchUpdates
{
private bool[,] updated; // for each patch, whether it needs to be sent to this client
private int updateCount; // number of patches that need to be sent
public ScenePresence Presence; // a reference to the client to send to
public PatchUpdates(TerrainData terrData, ScenePresence pPresence)
{
updated = new bool[terrData.SizeX / Constants.TerrainPatchSize, terrData.SizeY / Constants.TerrainPatchSize];
updateCount = 0;
Presence = pPresence;
// Initially, send all patches to the client
SetAll(true);
}
// Returns 'true' if there are any patches marked for sending
public bool HasUpdates()
{
return (updateCount > 0);
}
public void SetByXY(int x, int y, bool state)
{
this.SetByPatch(x / Constants.TerrainPatchSize, y / Constants.TerrainPatchSize, state);
}
public bool GetByPatch(int patchX, int patchY)
{
return updated[patchX, patchY];
}
public void SetByPatch(int patchX, int patchY, bool state)
{
bool prevState = updated[patchX, patchY];
if (!prevState && state)
updateCount++;
if (prevState && !state)
updateCount--;
updated[patchX, patchY] = state;
}
public void SetAll(bool state)
{
updateCount = 0;
for (int xx = 0; xx < updated.GetLength(0); xx++)
for (int yy = 0; yy < updated.GetLength(1); yy++)
updated[xx, yy] = state;
if (state)
updateCount = updated.GetLength(0) * updated.GetLength(1);
}
// Logically OR's the terrain data's patch taint map into this client's update map.
public void SetAll(TerrainData terrData)
{
if (updated.GetLength(0) != (terrData.SizeX / Constants.TerrainPatchSize)
|| updated.GetLength(1) != (terrData.SizeY / Constants.TerrainPatchSize))
{
throw new Exception(
String.Format("{0} PatchUpdates.SetAll: patch array not same size as terrain. arr=<{1},{2}>, terr=<{3},{4}>",
LogHeader, updated.GetLength(0), updated.GetLength(1),
terrData.SizeX / Constants.TerrainPatchSize, terrData.SizeY / Constants.TerrainPatchSize)
);
}
for (int xx = 0; xx < terrData.SizeX; xx += Constants.TerrainPatchSize)
{
for (int yy = 0; yy < terrData.SizeY; yy += Constants.TerrainPatchSize)
{
// Only set tainted. The patch bit may be set if the patch was to be sent later.
if (terrData.IsTaintedAt(xx, yy, false))
{
this.SetByXY(xx, yy, true);
}
}
}
}
}
// The flags of which terrain patches to send for each of the ScenePresence's
private Dictionary<UUID, PatchUpdates> m_perClientPatchUpdates = new Dictionary<UUID, PatchUpdates>();
/// <summary>
/// Human readable list of terrain file extensions that are supported.
/// </summary>
@ -127,7 +205,10 @@ namespace OpenSim.Region.CoreModules.World.Terrain
{
IConfig terrainConfig = config.Configs["Terrain"];
if (terrainConfig != null)
{
m_InitialTerrain = terrainConfig.GetString("InitialTerrain", m_InitialTerrain);
m_sendTerrainUpdatesByViewDistance = terrainConfig.GetBoolean("SendTerrainUpdatesByViewDistance", m_sendTerrainUpdatesByViewDistance);
}
}
public void AddRegion(Scene scene)
@ -422,9 +503,46 @@ namespace OpenSim.Region.CoreModules.World.Terrain
}
}
// Someone diddled terrain outside the normal code paths. Set the taintedness for all clients.
// ITerrainModule.TaintTerrain()
public void TaintTerrain ()
{
m_channel.GetTerrainData().TaintAllTerrain();
lock (m_perClientPatchUpdates)
{
// Set the flags for all clients so the tainted patches will be sent out
foreach (PatchUpdates pups in m_perClientPatchUpdates.Values)
{
pups.SetAll(m_scene.Heightmap.GetTerrainData());
}
}
}
// ITerrainModule.PushTerrain()
public void PushTerrain(IClientAPI pClient)
{
if (m_sendTerrainUpdatesByViewDistance)
{
ScenePresence presence = m_scene.GetScenePresence(pClient.AgentId);
if (presence != null)
{
lock (m_perClientPatchUpdates)
{
PatchUpdates pups;
if (!m_perClientPatchUpdates.TryGetValue(pClient.AgentId, out pups))
{
// There is a ScenePresence without a send patch map. Create one.
pups = new PatchUpdates(m_scene.Heightmap.GetTerrainData(), presence);
m_perClientPatchUpdates.Add(presence.UUID, pups);
}
pups.SetAll(true);
}
}
}
else
{
// The traditional way is to call into the protocol stack to send them all.
pClient.SendLayerData(new float[10]);
}
}
#region Plugin Loading Methods
@ -676,6 +794,11 @@ namespace OpenSim.Region.CoreModules.World.Terrain
}
}
}
// This event also causes changes to be sent to the clients
CheckSendingPatchesToClients();
// If things changes, generate some events
if (shouldTaint)
{
m_scene.EventManager.TriggerTerrainTainted();
@ -749,28 +872,10 @@ namespace OpenSim.Region.CoreModules.World.Terrain
presence.ControllingClient.OnLandUndo -= client_OnLandUndo;
presence.ControllingClient.OnUnackedTerrain -= client_OnUnackedTerrain;
}
}
/// <summary>
/// Checks to see if the terrain has been modified since last check
/// but won't attempt to limit those changes to the limits specified in the estate settings
/// currently invoked by the command line operations in the region server only
/// </summary>
private void CheckForTerrainUpdates()
if (m_perClientPatchUpdates.ContainsKey(client))
{
CheckForTerrainUpdates(false);
m_perClientPatchUpdates.Remove(client);
}
/// <summary>
/// Checks to see if the terrain has been modified since last check.
/// If it has been modified, every all the terrain patches are sent to the client.
/// If the call is asked to respect the estate settings for terrain_raise_limit and
/// terrain_lower_limit, it will clamp terrain updates between these values
/// currently invoked by client_OnModifyTerrain only and not the Commander interfaces
/// <param name="respectEstateSettings">should height map deltas be limited to the estate settings limits</param>
/// </summary>
private void CheckForTerrainUpdates(bool respectEstateSettings)
{
}
/// <summary>
@ -857,6 +962,28 @@ namespace OpenSim.Region.CoreModules.World.Terrain
/// <param name="y">The patch corner to send</param>
private void SendToClients(TerrainData terrData, int x, int y)
{
if (m_sendTerrainUpdatesByViewDistance)
{
// Add that this patch needs to be sent to the accounting for each client.
lock (m_perClientPatchUpdates)
{
m_scene.ForEachScenePresence(presence =>
{
PatchUpdates thisClientUpdates;
if (!m_perClientPatchUpdates.TryGetValue(presence.UUID, out thisClientUpdates))
{
// There is a ScenePresence without a send patch map. Create one.
thisClientUpdates = new PatchUpdates(terrData, presence);
m_perClientPatchUpdates.Add(presence.UUID, thisClientUpdates);
}
thisClientUpdates.SetByXY(x, y, true);
}
);
}
}
else
{
// Legacy update sending where the update is sent out as soon as noticed
// We know the actual terrain data passed is ignored. This kludge saves changing IClientAPI.
//float[] heightMap = terrData.GetFloatsSerialized();
float[] heightMap = new float[10];
@ -869,6 +996,105 @@ namespace OpenSim.Region.CoreModules.World.Terrain
}
);
}
}
private class PatchesToSend : IComparable<PatchesToSend>
{
public int PatchX;
public int PatchY;
public float Dist;
public PatchesToSend(int pX, int pY, float pDist)
{
PatchX = pX;
PatchY = pY;
Dist = pDist;
}
public int CompareTo(PatchesToSend other)
{
return Dist.CompareTo(other.Dist);
}
}
// Called each frame time to see if there are any patches to send to any of the
// ScenePresences.
// Loop through all the per-client info and send any patches necessary.
private void CheckSendingPatchesToClients()
{
lock (m_perClientPatchUpdates)
{
foreach (PatchUpdates pups in m_perClientPatchUpdates.Values)
{
if (pups.HasUpdates())
{
// There is something that could be sent to this client.
List<PatchesToSend> toSend = GetModifiedPatchesInViewDistance(pups);
if (toSend.Count > 0)
{
m_log.DebugFormat("{0} CheckSendingPatchesToClient: sending {1} patches to {2}",
LogHeader, toSend.Count, pups.Presence.Name);
// Sort the patches to send by the distance from the presence
toSend.Sort();
foreach (PatchesToSend pts in toSend)
{
// TODO: one can send multiple patches in a packet. Do that.
pups.Presence.ControllingClient.SendLayerData(pts.PatchX, pts.PatchY, null);
// presence.ControllingClient.SendLayerData(xs.ToArray(), ys.ToArray(), null, TerrainPatch.LayerType.Land);
}
}
}
}
}
}
private List<PatchesToSend> GetModifiedPatchesInViewDistance(PatchUpdates pups)
{
List<PatchesToSend> ret = new List<PatchesToSend>();
ScenePresence presence = pups.Presence;
if (presence == null)
return ret;
// See if there are patches within our view distance to send.
int startX = (((int) (presence.AbsolutePosition.X - presence.DrawDistance))/Constants.TerrainPatchSize) - 2;
startX = Math.Max(startX, 0);
startX = Math.Min(startX, (int)m_scene.RegionInfo.RegionSizeX/Constants.TerrainPatchSize);
int startY = (((int) (presence.AbsolutePosition.Y - presence.DrawDistance))/Constants.TerrainPatchSize) - 2;
startY = Math.Max(startY, 0);
startY = Math.Min(startY, (int)m_scene.RegionInfo.RegionSizeY/Constants.TerrainPatchSize);
int endX = (((int) (presence.AbsolutePosition.X + presence.DrawDistance))/Constants.TerrainPatchSize) + 2;
endX = Math.Max(endX, 0);
endX = Math.Min(endX, (int)m_scene.RegionInfo.RegionSizeX/Constants.TerrainPatchSize);
int endY = (((int) (presence.AbsolutePosition.Y + presence.DrawDistance))/Constants.TerrainPatchSize) + 2;
endY = Math.Max(endY, 0);
endY = Math.Min(endY, (int)m_scene.RegionInfo.RegionSizeY/Constants.TerrainPatchSize);
// m_log.DebugFormat("{0} GetModifiedPatchesInViewDistance. start=<{1},{2}>, end=<{3},{4}>",
// LogHeader, startX, startY, endX, endY);
for (int x = startX; x < endX; x++)
{
for (int y = startY; y < endY; y++)
{
//Need to make sure we don't send the same ones over and over
Vector3 presencePos = presence.AbsolutePosition;
Vector3 patchPos = new Vector3(x * Constants.TerrainPatchSize, y * Constants.TerrainPatchSize, presencePos.Z);
if (pups.GetByPatch(x, y))
{
//Check which has less distance, camera or avatar position, both have to be done.
//Its not a radius, its a diameter and we add 50 so that it doesn't look like it cuts off
if (Util.DistanceLessThan(presencePos, patchPos, presence.DrawDistance + 50)
|| Util.DistanceLessThan(presence.CameraPosition, patchPos, presence.DrawDistance + 50))
{
//They can see it, send it to them
pups.SetByPatch(x, y, false);
float dist = Vector3.DistanceSquared(presencePos, patchPos);
ret.Add(new PatchesToSend(x, y, dist));
//Wait and send them all at once
// pups.client.SendLayerData(x, y, null);
}
}
}
}
return ret;
}
private void client_OnModifyTerrain(UUID user, float height, float seconds, byte size, byte action,
float north, float west, float south, float east, UUID agentId)

11
OpenSim/Region/Framework/Interfaces/ITerrainModule.cs
View File

@ -24,9 +24,10 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System.IO;
using OpenSim.Framework;
using OpenMetaverse;
namespace OpenSim.Region.Framework.Interfaces
@ -43,6 +44,12 @@ namespace OpenSim.Region.Framework.Interfaces
/// </summary>
void TaintTerrain();
/// <summary>
/// When a client initially connects, all the terrain must be pushed to the viewer.
/// This call causes all the terrain patches to be sent to the client.
/// </summary>
void PushTerrain(IClientAPI pClient);
/// <summary>
/// Load a terrain from a stream.
/// </summary>

7
OpenSim/Region/Framework/Scenes/SceneBase.cs
View File

@ -213,7 +213,12 @@ namespace OpenSim.Region.Framework.Scenes
/// <param name="RemoteClient">Client to send to</param>
public virtual void SendLayerData(IClientAPI RemoteClient)
{
RemoteClient.SendLayerData(Heightmap.GetFloatsSerialised());
// RemoteClient.SendLayerData(Heightmap.GetFloatsSerialised());
ITerrainModule terrModule = RequestModuleInterface<ITerrainModule>();
if (terrModule != null)
{
terrModule.PushTerrain(RemoteClient);
}
}
#endregion