/// <summary>
/// Creates a new world manager.
/// </summary>
/// <param name="world">The world to manage.</param>
/// <param name="initialPosition">The initial position to begin generation around.</param>
public WorldManager( World world, Vector3 initialPosition )
{
_world = world;
_chunks = new Dictionary<Vector3, Chunk>();
// create some initial chunks (should take less than a second on most systems)
const int initialSquareSize = 2;
Vector3 center = new Vector3();
int minX = (int)( initialPosition.X * ChunkData.InverseSizeXZ - initialSquareSize ),
maxX = (int)( initialPosition.X * ChunkData.InverseSizeXZ + initialSquareSize ),
minZ = (int)( initialPosition.Z * ChunkData.InverseSizeXZ - initialSquareSize ),
maxZ = (int)( initialPosition.Z * ChunkData.InverseSizeXZ + initialSquareSize );
for ( int x = minX; x <= maxX; ++x )
{
for ( int z = minZ; z <= maxZ; ++z )
{
center.X = x * ChunkData.SizeXZ;
center.Z = z * ChunkData.SizeXZ;
LoadChunk( ref center );
}
}
// begin the threads
ShouldBeRunning = true;
_threadLoad = new Thread( new ThreadStart( MaintainChunks ) );
_threadLoad.Start();
}
/// <summary>
/// Creates a new chunk.
/// </summary>
/// <param name="world">The world this chunk belongs to.</param>
/// <param name="index">The index of the chunk.</param>
/// <param name="generateTerrain">True to generate some initial terrain, false to leave each block empty.</param>
private Chunk( World world, Vector3 index, bool generateTerrain )
{
_world = world;
_data = new ChunkData( index );
_terrain = new VoxelBuffer();
// create bounds
var sizeOffs = ChunkData.SizeXZ * 0.5f - 0.5f;
Vector3 boundsMin = new Vector3(
index.X - sizeOffs,
-0.5f,
index.Z - sizeOffs
);
Vector3 boundsMax = new Vector3(
index.X + sizeOffs,
0.5f + ChunkData.SizeY,
index.Z + sizeOffs
);
_bounds = new BoundingBox( boundsMin, boundsMax );
_octree = new ChunkOctree( _bounds );
// check if we need to populate
if ( generateTerrain )
{
PopulateTerrain();
}
}
/// <summary>
/// Creates the world instance if it does not already exist.
/// </summary>
/// <returns></returns>
public static World CreateInstance( int seed )
{
if ( _instance == null )
{
_instance = new World( seed );
}
return _instance;
}
/// <summary>
/// Creates a new world renderer.
/// </summary>
/// <param name="world">The world to render.</param>
public WorldRenderer( World world )
{
_graphicsDevice = Game.Instance.GraphicsDevice;
_graphicsDevice.SamplerStates[ 0 ] = SamplerState.PointClamp;
_graphicsDevice.BlendState = BlendState.Opaque;
_world = world;
_blockRenderEffect = new BlockRenderEffect();
ClearColor = Color.Gray;
}
/// <summary>
/// Creates a new chunk.
/// </summary>
/// <param name="world">The world this chunk belongs to.</param>
/// <param name="index">The index of the chunk.</param>
public Chunk( World world, Vector3 index )
: this(world, index, true)
{
}