#pragma once
#include "common.hpp"

class State;
class Context               // 上下文环境类，负责具体状态的切换
{
public:
	Context();
	~Context();

	void addState(State* state);
	bool changeState(State* state);
	State* getState();
	void setStateInfo(int stateInfo);
	int getStateInfo();

private:
	State* p_curState;
	vector<State*> p_states;
	int m_stateInfo;
};

class Water;

class State
{
public:
	State(string name) :m_name(name) {};
	virtual void behavior(Water* p_water) const = 0;
	virtual bool isMatch(int stateInfo) const = 0;
	string getName();

private:
	string m_name;
};


class SolidState :public State
{
public:
	SolidState(string name) :State(name) {};
	void behavior(Water* p_water) const;
	bool isMatch(int stateInfo) const;
};

class Liquidtate :public State
{
public:
	Liquidtate(string name) :State(name) {};
	void behavior(Water* p_water) const;
	bool isMatch(int stateInfo) const;
};

class GaseousState :public State
{
public:
	GaseousState(string name) :State(name) {};
	void behavior(Water* p_water) const;
	bool isMatch(int stateInfo) const;
};

class Water :public Context
{
public:
	Water();

	int getTemperature();
	void setTemperature(int temperature);
	void riseTemperature(int step);
	void reduceTemperature(int step);

	void behavior();

};