//
//  state.h
//

#ifndef state_h
#define state_h

#include "cocos2d.h"

class HelloWorld;
class State : public cocos2d::Layer
{
public:
    /**
     *  Called when entering state
     *
     *  @param previousState previous state or null if this is the first state
     */
    virtual void didEnterWithPreviousState(State* previousState) {};
    /**
     *  Called every frame by state machine
     *
     *  @param delta time
     */
    virtual void updateWithDeltaTime(float delta) {};
    /**
     *  Checks if next state is valid for transition
     *
     *  @param state next state
     *
     *  @return true if valid, false otherwise
     */
    virtual bool isValidNextState(State* state) {return false;};
    /**
     *  Called when exiting current state
     *
     *  @param nextState next state
     */
    virtual void willExitWithNextState(State* nextState) {};

    /**
     *  Get state machine
     *
     *  @return state machine
     */
    HelloWorld* getStateMachine()
    {
        return _HelloWorld;
    }

    /**
     *  Set State machine, this will be set when state has been added to state machine
     *
     *  @param stateMachine parent state machine
     */
    void setStateMachine(HelloWorld* stateMachine)
    {
        _HelloWorld = stateMachine;
    }

    virtual ~State(){};

protected:

    HelloWorld* _HelloWorld;

};
#endif /* state_h */