public void RebuildMesh()
{
ChunkLightmap lightmap = _world.GetLightmap(_chunk.Key);
var appearances = new System.Collections.Generic.Dictionary <BlockType, BlockAppearance>();
// air
appearances.Add(BlockType.Empty, new BlockAppearance());
// stone
BlockAppearance tmp = new BlockAppearance();
for (int i = 0; i < 6; i++)
{
tmp.UVRects[i] = _atlas.Rects[0];
tmp.Colors[i] = new Color(0.4f, 0.4f, 0.4f);
}
appearances.Add(new BlockType(2), tmp);
// dirt
tmp = new BlockAppearance();
for (int i = 0; i < 6; i++)
{
if (i != (int)BlockFace.Top)
{
tmp.UVRects[i] = _atlas.Rects[1];
}
else
{
tmp.UVRects[i] = _atlas.Rects[3];
}
}
appearances.Add(new BlockType(1), tmp);
// grass
tmp = new BlockAppearance();
for (int i = 0; i < 6; i++)
{
tmp.UVRects[i] = _atlas.Rects[2];
}
tmp.UVRects[(int)BlockFace.Top] = _atlas.Rects[4];
tmp.UVRects[(int)BlockFace.Bottom] = _atlas.Rects[1];
appearances.Add(new BlockType(3), tmp);
Profiler.BeginSample("RebuildMesh");
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
for (int z = 0; z < 16; z++)
{
BlockType block = _chunk.GetBlock(x, y, z);
if (block.isTransparent() == false && _chunk.IsBlockVisible(x, y, z))
{
BlockAppearance appearance;
if (!appearances.TryGetValue(block, out appearance))
{
appearance = new BlockAppearance();
}
CubeBuilder.buildCube(_meshBuilder, new Vector3i(x, y, z), _chunk, lightmap, appearance);
}
}
}
}
_mesh.Clear();
_meshBuilder.BuildMesh(_mesh);
_meshBuilder.Clear();
_dirty = false;
Profiler.EndSample();
}