/// <summary>
/// Change the state by reference to the State object. Only works if the State is already registered.
/// </summary>
/// <param name="state"></param>
public void ChangeState(State state)
{
if (invertedstates.ContainsKey(state)) {
ChangeState(invertedstates[state]);
}
}
/// <summary>
/// Add a State with a specific id.
/// </summary>
/// <param name="state">The State to add.</param>
/// <param name="id">The id for the State.</param>
/// <returns>The int id of the added State.</returns>
public int AddState(State state, int id)
{
states.Add(id, state);
invertedstates.Add(state, id);
state.Machine = this;
return id;
}
/// <summary>
/// Add a state and automatically grab functions by their name.
/// </summary>
/// <param name="names">The common name in all the functions, like "Walking" in "UpdateWalking" "EnterWalking" and "ExitWalking"</param>
/// <returns>The id to refer to the state.</returns>
public void AddState(params string[] names)
{
foreach (var name in names) {
if (Entity == null) throw new ArgumentException("State Machine must be Added to an Entity first!");
var state = new State();
//Using reflection to find all the appropriate functions!
MethodInfo mi;
mi = Entity.GetType().GetMethod("Enter" + name, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy);
if (mi != null) {
state.OnEnter = (Action)Delegate.CreateDelegate(typeof(Action), Entity, mi);
}
mi = Entity.GetType().GetMethod("Update" + name, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy);
if (mi != null) {
state.OnUpdate = (Action)Delegate.CreateDelegate(typeof(Action), Entity, mi);
}
mi = Entity.GetType().GetMethod("Exit" + name, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy);
if (mi != null) {
state.OnExit = (Action)Delegate.CreateDelegate(typeof(Action), Entity, mi);
}
//Using reflection to assign the id to the right property
FieldInfo fi;
fi = Entity.GetType().GetField("state" + name, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.FlattenHierarchy);
fi.SetValue(Entity, nextStateId);
AddState(state);
}
}
/// <summary>
/// Add a State.
/// </summary>
/// <param name="state">The State to add.</param>
/// <returns>The int id of the added State.</returns>
public int AddState(State state)
{
states.Add(nextStateId, state);
invertedstates.Add(state, nextStateId);
state.Id = nextStateId;
state.Machine = this;
nextStateId++;
return nextStateId - 1;
}
