/// <summary>
/// get state by name.
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public SMState GetState(string name)
{
if (name == null)
{
return(null);
}
SMState state = null;
if (_statesByName.ContainsKey(name))
{
state = _statesByName[name];
}
return(state);
}
/// <summary>
/// Make transition from origin state to dest state.
/// </summary>
/// <param name="dest">dest state</param>
/// <param name="duration">translate time</param>
/// <returns></returns>
public SMTransition MakeTransition(string dest, float duration)
{
SMState state = _sm.GetState(dest);
if (state == null)
{
Debug.Log("can't find state named " + dest);
return(null);
}
SMTransition transition = new SMTransition(this, state, duration, gameObject);
transition._sm = _sm;
_transitions.Add(transition);
return(transition);
}
/// <summary>
/// load state from file.
/// </summary>
/// <param name="asset">
/// the state machine file.
/// </param>
/// <returns></returns>
private bool LoadFromFile(TextAsset asset)
{
SMContext context = JsonConvert.DeserializeObject <SMContext>(asset.text);
//!解析状态值
for (int i = 0; i < context.states.Count; i++)
{
try
{
SMState state = Activator.CreateInstance(Type.GetType(context.states[i]),
new object[] { context.states[i], gameObject }) as SMState;
_statesByName.Add(context.states[i], state);
_statesByHash.Add(state.HashCode, state);
}
catch
{
Debug.Log("can't create state named " + context.states[i]);
continue;
}
}
Default = GetState(context.default_state);
_activeState = Default;
//!解析默认参数值
foreach (string param in context.default_params)
{
ParseParamData(param);
}
//!解析transtitions
for (int i = 0; i < context.transitions.Count; i++)
{
TranContext tranContext = context.transitions[i];
SMState origin = GetState(tranContext.origin);
if (origin == null)
{
Debug.Log(string.Format("can't make transition from {0} to {1}",
tranContext.origin, tranContext.dest));
continue;
}
SMTransition transition = origin.MakeTransition(tranContext.dest, tranContext.duration);
if (transition == null)
{
Debug.Log(string.Format("can't make transition from {0} to {1}",
tranContext.origin, tranContext.dest));
continue;
}
for (int j = 0; j < context.transitions[i].conditions.Count; j++)
{
string fileName = tranContext.conditions[j].fileName;
List <string> args = tranContext.conditions[j].paramDatas;
try
{
SMCondition condition = Activator.CreateInstance(Type.GetType(fileName), new object[] { args, gameObject }) as SMCondition;
transition.AddCondition(condition);
}
catch
{
Debug.Log(string.Format("can't make transition from {0} to {1}, condition {2} not found!",
tranContext.origin, tranContext.dest, tranContext.conditions[j]));
origin.RemoveTransition(transition);
}
}
}
return(true);
}
/// <summary>
/// change the state
/// </summary>
/// <param name="state">
/// the state for change. it's internal func.
/// </param>
internal void ChangeState(SMState state)
{
var old = ActiveState;
ActiveState = state;
}