// 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); } }