///////////////////////////////////////////////////////////////////////
public bool ChangeFlags(
string key,
VariableFlags initialValue,
VariableFlags changeValue,
bool create,
bool add,
ref bool notify
)
{
if ((key != null) && (elementFlags != null))
{
VariableFlags oldValue;
VariableFlags newValue;
if (elementFlags.TryGetValue(key, out oldValue))
{
if (add)
{
newValue = oldValue | changeValue;
elementFlags[key] = newValue;
if (notify && EntityOps.OnFlagsChanged(
variableEvent, oldValue, newValue))
{
notify = false;
}
return(true);
}
else
{
newValue = oldValue & ~changeValue;
if (newValue != VariableFlags.None)
{
elementFlags[key] = newValue;
if (notify && EntityOps.OnFlagsChanged(
variableEvent, oldValue, newValue))
{
notify = false;
}
return(true);
}
if (notify && EntityOps.OnFlagsChanged(
variableEvent, oldValue, newValue))
{
notify = false;
}
return(elementFlags.Remove(key));
}
}
else if (create)
{
newValue = add ? (initialValue | changeValue) :
VariableFlags.None;
elementFlags.Add(key, newValue);
if (notify && EntityOps.OnFlagsChanged(
variableEvent, oldValue, newValue))
{
notify = false;
}
return(true);
}
}
return(false);
}
