protected void AddTransition <TFromState, TToState, TTransition>()
where TFromState : State, new()
where TToState : State, new()
where TTransition : Transition, new()
{
// Create new states and new transition
State newFromState = GetState <TFromState>() == null
? new TFromState()
: GetState <TFromState>();
State newToState = GetState <TToState>() == null
? new TToState()
: GetState <TToState>();
Transition newTransition = GetTransition <TTransition>() == null
? new TTransition()
: GetTransition <TTransition>();
// Get their types
Type newFromStateType = newFromState.GetType();
Type newToStateType = newToState.GetType();
Type newTransitionType = newTransition.GetType();
// Check if this specific transition already exists
// ReSharper disable once LoopCanBeConvertedToQuery
for (int i = 0; i < stateTransitions.Count; i++)
{
StateTransition stateTransition = stateTransitions[i];
if (newFromStateType != stateTransition.FromState.GetType() ||
newToStateType != stateTransition.ToState.GetType() ||
newTransitionType != stateTransition.Transition.GetType())
{
continue;
}
throw new Exception(String.Format(
"Transition <b><{0}></b> from State <b><{1}></b> to State <b><{2}></b> already exists!",
newTransitionType.Name, newFromStateType.Name, newToStateType.Name));
}
// Create new transition data...
StateTransition newStateTransition =
new StateTransition(newFromState, newToState, newTransition);
// ...and add to the transition data list
stateTransitions.Add(newStateTransition);
}
private T GetTransition <T>() where T : Transition
{
Transition transition = null;
for (int i = 0; i < stateTransitions.Count; i++)
{
StateTransition stateTransition = stateTransitions[i];
if (typeof(T) == stateTransition.Transition.GetType())
{
transition = stateTransition.Transition;
}
}
return(transition as T);
}
private StateTransition GetTransitionFromCurrentState <T>() where T : Transition
{
for (int i = 0; i < stateTransitions.Count; i++)
{
StateTransition stateTransition = stateTransitions[i];
if (stateTransition.FromState.GetType() == CurrentState.GetType() &&
stateTransition.Transition.GetType() == typeof(T))
{
return(stateTransition);
}
}
throw new Exception(String.Format(
"Unable to find Transition <b><{0}></b> from State <b><{1}></b>",
typeof(T).Name, CurrentState.GetType().Name));
}
