/// <summary>
/// Creates a heightfield shape descriptor for the physics system.
/// </summary>
/// <param name="heightData">Array of all height values on the heightfield</param>
/// <param name="scaleFactor">Terrain scale factor. 4x means a spacing of 4 units (along horz plane) between adjacent vertices</param>
/// <returns>Heightfield shape descriptor.</returns>
private HeightFieldShapeDesc CreateHeightfieldShape(float[,] heightData, float scaleFactor)
{
var heightFieldDesc = new HeightFieldShapeDesc();
heightFieldDesc.HeightField = heightData;
heightFieldDesc.SizeX = heightData.GetLength(0) * scaleFactor;
heightFieldDesc.SizeZ = heightData.GetLength(1) * scaleFactor;
return(heightFieldDesc);
}
/// <summary>
/// Creates an actor using shape info and information from the parent BaseEntity.
/// </summary>
/// <param name="PhysicsScene">Reference to the physics scene</param>
/// <param name="density">Density of physics object</param>
private void CreateHeightfieldActor(IPhysicsScene PhysicsScene, float[,] heightData, float scaleFactor)
{
HeightFieldShapeDesc heightfieldShape = CreateHeightfieldShape(heightData, scaleFactor);
if (heightfieldShape == null)
{
throw new Exception("Shape did not load properly");
}
var desc = new ActorDesc();
desc.Orientation = parentEntity.Rotation;
desc.Mass = 1.0f;
desc.Dynamic = false;
desc.AffectedByGravity = false;
desc.Position = parentEntity.Position;
desc.EntityID = this.parentEntity.UniqueID;
desc.Shapes.Add(heightfieldShape);
desc.Type = ActorType.Terrain;
actor = PhysicsScene.CreateActor(desc);
}
