void FSM::setOnEnter(std::string state, std::function<void()> onEnter)
{
if (isContainState(state))
{
_onEnter[state] = onEnter;
}
else
{
cocos2d::log("FSM::setOnEnter:no state named %s", state.c_str());
}
}
FSM* FSM::addEvent(std::string eventName, std::string from, std::string to)
{
if ("" == eventName)
{
cocos2d::log("FSM::addEvent: eventName can't be empty!");
return nullptr;
}
if (!isContainState(from))
{
cocos2d::log("FSM::addEvent: from state %s does not exit.", from.c_str());
return nullptr;
}
if (!isContainState(to))
{
cocos2d::log("FSM::addEvent: to state %s does not exit.", to.c_str());
return nullptr;
}
std::unordered_map<std::string, std::string>& oneEvent = _events[eventName];
oneEvent[from] = to;
return this;
}
void FSM::changeToState(std::string state)
{
if (isContainState(state))
{
_previousState = _currentState;
_currentState = state;
cocos2d::log("FSM::changeToState: %s -> %s.", _previousState.c_str(), _currentState.c_str());
if (_onEnters[state])
_onEnters[state]();
}
else
{
cocos2d::log("FSM::changeToState: no such state as %s, state unchanged.", state.c_str());
}
}
