private CharacterCreationSubState RegressState(CharacterCreationSubState current)
{
if (current is ConfirmPasswordState)
{
// If password confirmation failed, try selecting a new password.
return(new GetPasswordState(this.Session));
}
throw new InvalidOperationException("The character state machine does not know how to calculate the next step after '" + current.GetType().Name + "' fails");
}
private CharacterCreationSubState AdvanceState(CharacterCreationSubState current)
{
// This character creation state machine can return actual creation state objects - if someone
// were to expand and add new creation state(s) that are not MUD-agnostic, then they should also
// add and use their own CreationStateMachine handling those states instead of this default one;
// they could of course reuse some/all of the states below in addition to their own.
if (current is ConfirmCreationEntryState)
{
return(new GetNameState(this.Session));
}
else if (current is GetNameState)
{
return(new GetPasswordState(this.Session));
}
else if (current is GetPasswordState)
{
return(new ConfirmPasswordState(this.Session));
}
else if (current is ConfirmPasswordState)
{
return(new PickGenderState(this.Session));
}
else if (current is PickGenderState)
{
return(new GetDescriptionState(this.Session));
}
else if (current is GetDescriptionState)
{
return(new SetAttributesState(this.Session));
}
else if (current is SetAttributesState)
{
return(new PickSkillsState(this.Session));
}
else if (current is PickSkillsState)
{
return(new PickTalentsState(this.Session));
}
else if (current is PickTalentsState)
{
return(new PickRaceState(this.Session));
}
else if (current is PickRaceState)
{
// We are done with character creation!
return(null);
}
throw new InvalidOperationException("The character state machine does not know how to calculate the next step after '" + current.GetType().Name + "' succeeds");
}
/// <summary>Gets the next step in the creation process.</summary>
/// <param name="current">The current (just executed step).</param>
/// <param name="previousStatus">Whether the current step passed or failed.</param>
/// <returns>The next step in the character creation process, or null if it is finished.</returns>
public override CharacterCreationSubState GetNextStep(CharacterCreationSubState current, StepStatus previousStatus)
{
// entry point of the state machine
if (current == null)
{
return(new ConfirmCreationEntryState(this.Session));
}
if (previousStatus == StepStatus.Success)
{
return(this.AdvanceState(current));
}
else
{
return(this.RegressState(current));
}
}
