public Vec2i? ClosestUnloaded(int i, int j, int maxDist)
{
int dist = maxDist;
Vec2i? res = null;
for (int x = i - maxDist; x <= i + maxDist; x++)
for (int y = j - maxDist; y <= j + maxDist; y++) {
int curDist = Math.Max(Math.Abs(x - i), Math.Abs(y - j));
if (this[x, y].Texture == null && curDist < dist) {
dist = curDist;
res = new Vec2i(x, y);
}
}
return res;
}
Vertex[,] GetChunk(int x, int y)
{
Vec2i v = new Vec2i(x, y);
if (!map.ContainsKey(v)) {
var chunk = new Vertex[CHUNK_SIZE, CHUNK_SIZE];
for (int i = 0; i < CHUNK_SIZE; i++)
for (int j = 0; j < CHUNK_SIZE; j++)
chunk[i, j] = new Vertex();
map[v] = chunk;
}
return map[v];
}