/// <summary>
/// Removes the specified DrawableInstance from this DrawableSet. This will only work if the
/// DrawableInstance belongs to this DrawableSet - it will not work if it belongs to another.
/// Returns a true boolean value if the specified instance was found within this set and removed.
/// If nothing was removed, a false value is returned.
/// </summary>
public bool Remove(DrawableInstance drawableInstance)
{
bool result = true;
result &= _stateDictionary[drawableInstance._associatedState].Remove(drawableInstance);
result &= _groupDictionary[drawableInstance._associatedGroup].Remove(drawableInstance);
return result;
}
/// <summary>
/// Adds the specified IGameDrawable to this DrawableSet under the specified *state*. Optionally, the
/// IGameDrawable being added can also be associated with a *group*. When an IGameDrawable is added to
/// a DrawableSet, it is wrapped around a DrawableInstance class that allows properties about the
/// drawable to be set such as its Color, Rotation, Visibility etc... This DrawableInstance that is
/// created to wrap the IGameDrawable is returned by this method.
/// </summary>
public DrawableInstance Add(string state, IGameDrawable drawable, string group="")
{
if (!_stateDictionary.ContainsKey(state))
AddState(state);
if (!_groupDictionary.ContainsKey(group))
AddGroup(group);
DrawableInstance instance = new DrawableInstance(drawable);
instance._associatedGroup = group;
instance._associatedState = state;
_stateDictionary[state].Add(instance);
_groupDictionary[group].Add(instance);
return instance;
}
