// 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)
{
m_physicsScene.Logger.DebugFormat("{0} Terrain for {1}/{2} created with {3}",
LogHeader, m_physicsScene.RegionName, terrainRegionBase,
(BSTerrainPhys.TerrainImplementation)BSParam.TerrainImplementation);
BSTerrainPhys newTerrainPhys = null;
switch ((int)BSParam.TerrainImplementation)
{
case (int)BSTerrainPhys.TerrainImplementation.Heightmap:
newTerrainPhys = new BSTerrainHeightmap(m_physicsScene, terrainRegionBase, id,
heightMap, minCoords, maxCoords);
break;
case (int)BSTerrainPhys.TerrainImplementation.Mesh:
newTerrainPhys = new BSTerrainMesh(m_physicsScene, terrainRegionBase, id,
heightMap, minCoords, maxCoords);
break;
default:
m_physicsScene.Logger.ErrorFormat("{0} Bad terrain implementation specified. Type={1}/{2},Region={3}/{4}",
LogHeader,
(int)BSParam.TerrainImplementation,
BSParam.TerrainImplementation,
m_physicsScene.RegionName, terrainRegionBase);
break;
}
return(newTerrainPhys);
}
// Create the initial instance of terrain and the underlying ground plane.
// This is called from the initialization routine so we presume it is
// safe to call Bullet in real time. We hope no one is moving prims around yet.
public void CreateInitialGroundPlaneAndTerrain()
{
DetailLog("{0},BSTerrainManager.CreateInitialGroundPlaneAndTerrain,region={1}", BSScene.DetailLogZero, m_physicsScene.RegionName);
// The ground plane is here to catch things that are trying to drop to negative infinity
BulletShape groundPlaneShape = m_physicsScene.PE.CreateGroundPlaneShape(BSScene.GROUNDPLANE_ID, 1f, BSParam.TerrainCollisionMargin);
Vector3 groundPlaneAltitude = new Vector3(0f, 0f, BSParam.TerrainGroundPlane);
m_groundPlane = m_physicsScene.PE.CreateBodyWithDefaultMotionState(groundPlaneShape,
BSScene.GROUNDPLANE_ID, groundPlaneAltitude, Quaternion.Identity);
// Everything collides with the ground plane.
m_groundPlane.collisionType = CollisionType.Groundplane;
m_physicsScene.PE.AddObjectToWorld(m_physicsScene.World, m_groundPlane);
m_physicsScene.PE.UpdateSingleAabb(m_physicsScene.World, m_groundPlane);
// Ground plane does not move
m_physicsScene.PE.ForceActivationState(m_groundPlane, ActivationState.DISABLE_SIMULATION);
BSTerrainPhys initialTerrain = new BSTerrainHeightmap(m_physicsScene, Vector3.Zero, BSScene.TERRAIN_ID, DefaultRegionSize);
lock (m_terrains)
{
// Build an initial terrain and put it in the world. This quickly gets replaced by the real region terrain.
m_terrains.Add(Vector3.Zero, initialTerrain);
}
}