/// <summary>
/// Sets the Conditional.
/// </summary>
/// <param name="conditional">The new <see cref="NPCChatConditionalBase"/>.</param>
/// <exception cref="ArgumentNullException"><paramref name="conditional" /> is <c>null</c>.</exception>
public void SetConditional(NPCChatConditionalBase conditional)
{
if (conditional == null)
{
throw new ArgumentNullException("conditional");
}
if (_conditional == conditional)
{
return;
}
// Set the new conditional
_conditional = conditional;
// Re-create all the parameters to the appropriate type for the new conditional
var newParameters = new NPCChatConditionalParameter[Conditional.ParameterCount];
for (var i = 0; i < Conditional.ParameterCount; i++)
{
var neededType = Conditional.GetParameter(i);
if (i < _parameters.Count && _parameters[i].ValueType == neededType)
{
// The type matches the old type, so just reuse it
newParameters[i] = _parameters[i];
}
else
{
// Different type or out of range, so make a new one
newParameters[i] = NPCChatConditionalParameter.CreateParameter(neededType);
}
}
// Set the new parameters
_parameters.Clear();
_parameters.AddRange(newParameters);
if (Changed != null)
{
Changed.Raise(this, EventArgs.Empty);
}
}