// TODO: redo terrain implementation selection to allow other base types than heightMap.
private BSTerrainPhys BuildPhysicalTerrain(Vector3 terrainRegionBase, uint id, float[] heightMap, Vector3 minCoords, Vector3 maxCoords)
{
PhysicsScene.Logger.DebugFormat("{0} Terrain for {1}/{2} created with {3}",
LogHeader, PhysicsScene.RegionName, terrainRegionBase,
(BSTerrainPhys.TerrainImplementation)BSParam.TerrainImplementation);
BSTerrainPhys newTerrainPhys = null;
switch ((int)BSParam.TerrainImplementation)
{
case (int)BSTerrainPhys.TerrainImplementation.Heightmap:
newTerrainPhys = new BSTerrainHeightmap(PhysicsScene, terrainRegionBase, id,
heightMap, minCoords, maxCoords);
break;
case (int)BSTerrainPhys.TerrainImplementation.Mesh:
newTerrainPhys = new BSTerrainMesh(PhysicsScene, terrainRegionBase, id,
heightMap, minCoords, maxCoords);
break;
default:
PhysicsScene.Logger.ErrorFormat("{0} Bad terrain implementation specified. Type={1}/{2},Region={3}/{4}",
LogHeader,
(int)BSParam.TerrainImplementation,
BSParam.TerrainImplementation,
PhysicsScene.RegionName, terrainRegionBase);
break;
}
return(newTerrainPhys);
}
// Given an address, return 'true' of there is a description of that terrain and output
// the descriptor class and the 'base' fo the addresses therein.
private bool GetTerrainPhysicalAtXYZ(Vector3 pos, out BSTerrainPhys outPhysTerrain, out Vector3 outTerrainBase)
{
int offsetX = ((int)(pos.X / (int)DefaultRegionSize.X)) * (int)DefaultRegionSize.X;
int offsetY = ((int)(pos.Y / (int)DefaultRegionSize.Y)) * (int)DefaultRegionSize.Y;
Vector3 terrainBaseXYZ = new Vector3(offsetX, offsetY, 0f);
BSTerrainPhys physTerrain = null;
lock (m_terrains)
{
m_terrains.TryGetValue(terrainBaseXYZ, out physTerrain);
}
outTerrainBase = terrainBaseXYZ;
outPhysTerrain = physTerrain;
return(physTerrain != null);
}
// If called with no mapInfo for the terrain, this will create a new mapInfo and terrain
// based on the passed information. The 'id' should be either the terrain id or
// BSScene.CHILDTERRAIN_ID. If the latter, a new child terrain ID will be allocated and used.
// The latter feature is for creating child terrains for mega-regions.
// If called with a mapInfo in m_heightMaps and there is an existing terrain body, a new
// terrain shape is created and added to the body.
// This call is most often used to update the heightMap and parameters of the terrain.
// (The above does suggest that some simplification/refactoring is in order.)
// Called during taint-time.
private void UpdateTerrain(uint id, float[] heightMap,
Vector3 minCoords, Vector3 maxCoords, bool inTaintTime)
{
DetailLog("{0},BSTerrainManager.UpdateTerrain,call,minC={1},maxC={2},inTaintTime={3}",
BSScene.DetailLogZero, minCoords, maxCoords, inTaintTime);
// Find high and low points of passed heightmap.
// The min and max passed in is usually the area objects can be in (maximum
// object height, for instance). The terrain wants the bounding box for the
// terrain so replace passed min and max Z with the actual terrain min/max Z.
float minZ = float.MaxValue;
float maxZ = float.MinValue;
foreach (float height in heightMap)
{
if (height < minZ)
{
minZ = height;
}
if (height > maxZ)
{
maxZ = height;
}
}
if (minZ == maxZ)
{
// If min and max are the same, reduce min a little bit so a good bounding box is created.
minZ -= BSTerrainManager.HEIGHT_EQUAL_FUDGE;
}
minCoords.Z = minZ;
maxCoords.Z = maxZ;
Vector3 terrainRegionBase = new Vector3(minCoords.X, minCoords.Y, 0f);
lock (m_terrains)
{
BSTerrainPhys terrainPhys;
if (m_terrains.TryGetValue(terrainRegionBase, out terrainPhys))
{
// There is already a terrain in this spot. Free the old and build the new.
DetailLog("{0},UpdateTerrain:UpdateExisting,call,id={1},base={2},minC={3},maxC={4}",
BSScene.DetailLogZero, id, terrainRegionBase, minCoords, minCoords);
// Remove old terrain from the collection
m_terrains.Remove(terrainRegionBase);
// Release any physical memory it may be using.
terrainPhys.Dispose();
if (MegaRegionParentPhysicsScene == null)
{
BSTerrainPhys newTerrainPhys = BuildPhysicalTerrain(terrainRegionBase, id, heightMap, minCoords, maxCoords);
m_terrains.Add(terrainRegionBase, newTerrainPhys);
m_terrainModified = true;
}
else
{
// It's possible that Combine() was called after this code was queued.
// If we are a child of combined regions, we don't create any terrain for us.
DetailLog("{0},BSTerrainManager.UpdateTerrain:AmACombineChild,taint", BSScene.DetailLogZero);
// Get rid of any terrain that may have been allocated for us.
ReleaseGroundPlaneAndTerrain();
// I hate doing this, but just bail
return;
}
}
else
{
// We don't know about this terrain so either we are creating a new terrain or
// our mega-prim child is giving us a new terrain to add to the phys world
// if this is a child terrain, calculate a unique terrain id
uint newTerrainID = id;
if (newTerrainID >= BSScene.CHILDTERRAIN_ID)
{
newTerrainID = ++m_terrainCount;
}
DetailLog("{0},UpdateTerrain:NewTerrain,taint,newID={1},minCoord={2},maxCoord={3}",
BSScene.DetailLogZero, newTerrainID, minCoords, minCoords);
BSTerrainPhys newTerrainPhys = BuildPhysicalTerrain(terrainRegionBase, id, heightMap, minCoords, maxCoords);
m_terrains.Add(terrainRegionBase, newTerrainPhys);
m_terrainModified = true;
}
}
}
// Given an address, return 'true' of there is a description of that terrain and output
// the descriptor class and the 'base' fo the addresses therein.
private bool GetTerrainPhysicalAtXYZ(Vector3 pos, out BSTerrainPhys outPhysTerrain, out Vector3 outTerrainBase)
{
int offsetX = ((int)(pos.X / (int)DefaultRegionSize.X)) * (int)DefaultRegionSize.X;
int offsetY = ((int)(pos.Y / (int)DefaultRegionSize.Y)) * (int)DefaultRegionSize.Y;
Vector3 terrainBaseXYZ = new Vector3(offsetX, offsetY, 0f);
BSTerrainPhys physTerrain = null;
lock (m_terrains)
{
m_terrains.TryGetValue(terrainBaseXYZ, out physTerrain);
}
outTerrainBase = terrainBaseXYZ;
outPhysTerrain = physTerrain;
return (physTerrain != null);
}
