protected override void OnStartRunning()
{
var tilemap = _worldQuery.ToComponentArray <Tilemap>()[0];
EntityArchetype archetypeNode = EntityManager.CreateArchetype(typeof(Node));
BoundsInt bounds = tilemap.cellBounds;
TileBase[] allTiles = tilemap.GetTilesBlock(bounds);
var cellsCount = bounds.size.x * bounds.size.y;
MapData = new NativeHashMap <int2, CellData>(cellsCount, Allocator.Persistent);
int nodeIndex = 0;
for (int x = 0; x < bounds.size.x; x++)
{
for (int y = 0; y < bounds.size.y; y++)
{
TileBase tile;
TilemapHelper.TryGetTile(x, y, bounds.size.x, bounds.size.y, ref allTiles, out tile);
int2 coord = new int2(x, y);
if (tile == null)
{
var entity = EntityManager.CreateEntity(archetypeNode);
EntityManager.SetComponentData(entity, new Node
{
Coord = coord,
Walkable = true
});
EntityManager.AddBuffer <NodeLink>(entity);
DynamicBuffer <NodeLink> buffer = EntityManager.GetBuffer <NodeLink>(entity);
var neighbouringTiles = TilemapHelper.GetNeighbouringTiles(x, y, bounds.size.x, bounds.size.y, ref allTiles, true);
foreach (var neighbouringTile in neighbouringTiles)
{
buffer.Add(new NodeLink {
LinkedEntityCoord = neighbouringTile
});
}
MapData.TryAdd(coord, new CellData
{
Coord = coord,
NodeIndex = nodeIndex,
CellType = CellTypes.GROUND,
ContentType = CellContentTypes.EMPTY,
Fraction = Fractions.NEUTRAL
});
nodeIndex++;
}
else
{
MapData.TryAdd(coord, new CellData
{
Coord = coord,
NodeIndex = -1,
CellType = CellTypes.WALL,
ContentType = CellContentTypes.EMPTY,
Fraction = Fractions.NEUTRAL
});
}
}
}
}