/// <summary>
/// Runs a query on the current state of gameobjects with MultiTagComponent.
/// </summary>
/// <param name="multiTagFilter"></param>
/// <returns>Returns the first index</returns>
public static GameObject QuerySingle(MultiTagFilter multiTagFilter)
{
return(RunQuery(multiTagFilter)[0]);
}
private static List <GameObject> RunQuery(MultiTagFilter multiTagFilter)
{
List <GameObject> result = null;
var any = multiTagFilter.Any;
var all = multiTagFilter.All;
var none = multiTagFilter.None;
var resultHash = new HashSet <GameObject>();
if (any != null)
{
for (int i = 0; i < any.Length; i++)
{
var key = any[i];
if (MtDict.ContainsKey(key))
{
var tempResult = MtDict[key];
if (tempResult != null && tempResult.Count != 0)
{
resultHash.UnionWith(tempResult);
}
}
}
result = resultHash.ToList();
}
if (all != null)
{
for (int i = 0; i < all.Length; i++)
{
var key = all[i];
if (MtDict.ContainsKey(key))
{
var tempResult = MtDict[key];
if (tempResult != null && tempResult.Count != 0)
{
result = result == null?tempResult.ToList() : tempResult.Intersect(result).ToList();
}
}
}
}
if (none != null)
{
if (result == null)
{
if (resultHash.Count > 0)
{
resultHash.Clear();
}
foreach (var dict in MtDict)
{
var list = dict.Value;
resultHash.UnionWith(list);
}
result = resultHash.ToList();
}
for (int i = 0; i < none.Length; i++)
{
var key = none[i];
if (MtDict.ContainsKey(key))
{
var toRemove = MtDict[key];
if (toRemove != null && toRemove.Count != 0)
{
var theSet = new HashSet <GameObject>(toRemove);
result.RemoveAll(item => theSet.Contains(item));
}
}
}
}
return(result);
}
/// <summary>
/// Runs a query on the current state of gameobjects with MultiTagComponent.
/// </summary>
/// <param name="multiTagFilter">Query parameters</param>
/// <returns>A shallow List of GameObjects</returns>
public static List <GameObject> QueryMultiple(MultiTagFilter multiTagFilter)
{
//Creates a shallow copy
return(RunQuery(multiTagFilter).ToList());
}
