/// Returns a group for the specified matcher.
/// Calling context.GetGroup(matcher) with the same matcher will always
/// return the same instance of the group.
public IGroup <TEntity> GetGroup(IMatcher <TEntity> matcher)
{
if (!_groups.TryGetValue(matcher, out IGroup <TEntity> group))
{
group = new Group <TEntity>(matcher);
var entities = GetEntities();
for (int i = 0; i < entities.Length; i++)
{
group.HandleEntitySilently(entities[i]);
}
_groups.Add(matcher, group);
for (int i = 0; i < matcher.indices.Length; i++)
{
var index = matcher.indices[i];
if (_groupsForIndex[index] == null)
{
_groupsForIndex[index] = new List <IGroup <TEntity> >();
}
_groupsForIndex[index].Add(group);
}
OnGroupCreated?.Invoke(this, group);
}
return(group);
}
public Group <T> GetGroup(IMatcher matcher)
{
Group <T> group;
if (!_groups.TryGetValue(matcher, out group))
{
group = new Group <T>(matcher);
var entities = GetEntities();
for (int i = 0; i < entities.Length; i++)
{
group.HandleEntitySilently(entities[i]);
}
_groups.Add(matcher, group);
for (int i = 0; i < matcher.Types.Length; i++)
{
var type = matcher.Types[i];
if (_groupsForTypes[type] == null)
{
_groupsForTypes[type] = new List <Group <T> >();
}
_groupsForTypes[type].Add(group);
}
OnGroupCreated?.Invoke(this, @group);
}
return(group);
}
static void OverwriteGroup(int index, ShipGroup sg)
{
if (_groups[index] != null)
{
RemoveGroup(index);
}
_groups[index] = sg;
OnGroupCreated?.Invoke(index);
}
public static void CreateGroup(int index)
{
if (_selectedShips.Count == 0)
{
return;
}
//need to remove selected ships from any old group
for (int i = 0; i < _groups.Length; i++)
{
if (i == index)
{
continue;
}
for (int j = 0; j < _selectedShips.Count; j++)
{
if (_groups[i] != null && _groups[i].Contains(_selectedShips[j]))
{
_groups[i].Remove(_selectedShips[j]);
if (_groups[i].ships.Count == 0)
{
RemoveGroup(i);
}
else
{
OverwriteGroup(i, new ShipGroup(_groups[i].ships.ToList()));
}
}
}
}
if (_groups[index] != null)
{
RemoveGroup(index);
}
_groups[index] = new ShipGroup(_selectedShips.ToList());
OnGroupCreated?.Invoke(index);
}