int CalculateIndex(STETilemap tilemap, int gridX, int gridY, uint tileData)
{
int brushId = (int)((tileData & Tileset.k_TileDataMask_BrushId) >> 16);
// upper row
bool autotiling_NW = AutotileWith(tilemap, brushId, gridX - 1, gridY + 1);
bool autotiling_N = AutotileWith(tilemap, brushId, gridX, gridY + 1);
bool autotiling_NE = AutotileWith(tilemap, brushId, gridX + 1, gridY + 1);
// mid row
bool autotiling_E = AutotileWith(tilemap, brushId, gridX + 1, gridY);
bool autotiling_W = AutotileWith(tilemap, brushId, gridX - 1, gridY);
// bottom row
bool autotiling_SW = AutotileWith(tilemap, brushId, gridX - 1, gridY - 1);
bool autotiling_S = AutotileWith(tilemap, brushId, gridX, gridY - 1);
bool autotiling_SE = AutotileWith(tilemap, brushId, gridX + 1, gridY - 1);
int binIdx = 0;
// clockwise
if (autotiling_N)
{
binIdx = 1;
}
if (autotiling_N && autotiling_E && autotiling_NE)
{
binIdx |= 2;
}
if (autotiling_E)
{
binIdx |= 4;
}
if (autotiling_S && autotiling_E && autotiling_SE)
{
binIdx |= 8;
}
if (autotiling_S)
{
binIdx |= 16;
}
if (autotiling_S && autotiling_W && autotiling_SW)
{
binIdx |= 32;
}
if (autotiling_W)
{
binIdx |= 64;
}
if (autotiling_N && autotiling_W && autotiling_NW)
{
binIdx |= 128;
}
return(Array.IndexOf(binaryGrid, binIdx));
}
public override uint[] GetSubtiles(STETilemap tilemap, int gridX, int gridY, uint tileData)
{
// Add animated tiles
{
int idx = CalculateIndex(tilemap, gridX, gridY, tileData);
TilesetBrush brush = Tileset.FindBrush(Tileset.GetBrushIdFromTileData(TileIds[idx]));
if (brush && brush.IsAnimated())
{
TilemapChunk.RegisterAnimatedBrush(brush);
}
}
return(null);
}
