public Chunk(Vector2Int index, GeneratorBehaviour generator)
{
_generator = generator;
_bounds = new Bounds(new Vector3(index.x * _generator.GridSize.x, 0, index.y * _generator.GridSize.z) + _generator.GridSize / 2, _generator.GridSize);
Target = new GameObject("Chunk " + index);
_renderer = Target.AddComponent <MeshRenderer>();
_renderer.sharedMaterial = new Material(Shader.Find("Custom/SurfaceShader"));
_filter = Target.AddComponent <MeshFilter>();
Target.transform.parent = _generator.transform;
Target.transform.position = _bounds.min;
Target.SetActive(false);
_lodMeshes = new LODMesh[_generator.LodLevels.Length];
for (int i = 0; i < _generator.LodLevels.Length; i++)
{
_lodMeshes[i] = new LODMesh(_generator.LodLevels[i].Lod, UpdateTerrainChunk, _generator);
}
}
public void UpdateTerrainChunk()
{
if (!_mapDataReceived)
{
return;
}
float viewerDstFromNearestEdge = Mathf.Sqrt(_bounds.SqrDistance(_generator.ViewerPosition));
bool visible = viewerDstFromNearestEdge <= _generator.MaxViewDistance;
if (visible)
{
int lodIndex = 0;
for (int i = 0; i < _generator.LodLevels.Length - 1; i++)
{
if (!(viewerDstFromNearestEdge > _generator.LodLevels[i].DistanceThreshold))
{
break;
}
lodIndex = i + 1;
}
if (lodIndex != _previousLodIndex)
{
LODMesh lodMesh = _lodMeshes[lodIndex];
if (lodMesh.HasMesh)
{
_previousLodIndex = lodIndex;
_filter.mesh = lodMesh.Mesh;
}
else if (!lodMesh.HasRequestedMesh)
{
lodMesh.RequestMesh(_mapData);
}
}
}
Target.SetActive(visible);
}
