/// <summary>
/// Creates a new world.
/// </summary>
/// <param name="seed">The world seed.</param>
private World( int seed )
{
// setup the terrain
//_terrain = Terrain.CreateInstance( (int)DateTime.Now.Ticks );
_terrain = Terrain.CreateInstance( seed );
// create the player
Vector3 playerPosition = new Vector3( 0.0f, Terrain.MaximumHeight + 2.0f, 0.0f );
_player = Player.CreateInstance( playerPosition );
// create the world manager (it will begin running all by itself)
_manager = new WorldManager( this, playerPosition );
}
/// <summary>
/// Gets the light value from the block at the local coordinates.
/// </summary>
/// <param name="terrain">The terrain to use.</param>
/// <param name="x">The relative local X coordinate.</param>
/// <param name="y">The relative local Y coordinate.</param>
/// <param name="z">The relative local Z coordinate.</param>
private float GetLightFromBlock( Terrain terrain, int x, int y, int z )
{
// if we're within actual bounds, then we can just return the already calculated light
if ( x >= 0 && x < ChunkData.SizeXZ &&
z >= 0 && z < ChunkData.SizeXZ &&
y >= 0 && y < ChunkData.SizeY )
{
return _data[ x, y, z ].Lighting;
}
// TODO : We need to query the world later when the terrain is modifiable
// if we're not within bounds, then we need to estimate the light level
float lighting = Block.MaximumLighting;
for ( int toCheckY = ChunkData.SizeY - 1; toCheckY > y; --toCheckY )
{
if ( terrain.Query( x, toCheckY, z ) != BlockType.Air )
{
lighting = Block.MinimumLighting;
break;
}
}
return lighting;
}
/// <summary>
/// Creates the terrain instance if it does not already exist.
/// </summary>
/// <param name="seed">The terrain seed.</param>
/// <returns></returns>
public static Terrain CreateInstance( int seed )
{
if ( _instance == null )
{
_instance = new Terrain( seed );
}
return _instance;
}
