狀态模式
一、題目：
某紙牌遊戲中，人物角色具有入門級（Primary），熟練級(Secondary)，高手級(Professional)和骨灰級(Final)四種等級，角色的等級與積分相對應，遊戲勝利将增加積分，失敗則扣除積分，入門級具有最基本的遊戲功能play()，熟練級增加了遊戲勝利積分加倍功能doubleScore（），高手級在熟練級基礎上再增加換牌功能changeCards()，骨灰級在高手級基礎上再增加偷看他人的牌的功能peekCards()，使用狀态模式來設計系統
(1) 繪制狀态模式結構視圖
(2) 給出執行個體類圖并實作代碼
二、所用模式結構視圖：
三、執行個體類圖：
四、執行個體實作代碼：
(因為區分，是以在類的前面加了Gj19)
環境類-玩家實體類
package gjStatePattern;
/**
* 玩家實體類
* @author gong
*
*/
public class Gj19Player {
private Gj19AbstractLevel level;
private String name;
private boolean isSuccess;
public Gj19Player(String name) {
this.level=new Gj19PrimaryLevel(this);
this.name = name;
}
public boolean isSuccess() {
return isSuccess;
}
public void setSuccess(boolean isSuccess) {
this.isSuccess = isSuccess;
}
public Gj19AbstractLevel getLevel() {
return level;
}
public void setLevel(Gj19AbstractLevel level) {
this.level = level;
}
public String getName() {
return name;
}
public void play(int score){
level.play(score);
}
public void doubleScore(int score){
level.doubleScore(score);
}
public void changeCards(int score){
level.changeCards(score);
}
public void peekCards(int score){
level.peekCards(score);
}
}
抽象狀态類
package gjStatePattern;
/**
* 抽象狀态類
* @author gong
*
*/
public abstract class Gj19AbstractLevel {
protected Gj19Player player;
protected String stateName;
protected int point;
public abstract void checkState(int score);
public int getPoint() {
return point;
}
public void setPoint(int point) {
this.point = point;
}
public String getStateName() {
return stateName;
}
public void setStateName(String stateName) {
this.stateName = stateName;
}
public void play(int score){
System.out.println(player.getName()+"擁有"+this.point+"積分，開始玩紙牌遊戲");
if(player.isSuccess()==true){
this.point+=score;
}
else if(point>score&&player.isSuccess()==false){
System.out.println("分數已經最低，不可以再扣分了");
}
else if(player.isSuccess()==false){
this.point-=score;
}
System.out.println(player.isSuccess()==true?"你的牌打得忒好了，赢得一場比賽":"同志任需努力，輸了一場比賽");
checkState(score);
System.out.println("積分剩餘："+this.point+"，目前級别："+player.getLevel().getStateName());
}
public void doubleScore(int score){
System.out.println(player.getName()+"擁有"+this.point+"積分，遊戲勝利可以積分加倍");
if(player.isSuccess()==true){
this.point+=*score;
}
else if(point>score&&player.isSuccess()==false){
System.out.println("分數已經最低，不可以再扣分了");
}
else if(player.isSuccess()==false){
this.point-=score;
}
System.out.println(player.isSuccess()==true?"你的牌打得忒好了，赢得一場比賽":"同志任需努力，輸了一場比賽");
checkState(score);
System.out.println("積分剩餘："+this.point+"，目前級别："+player.getLevel().getStateName());
}
public void changeCards(int score){
System.out.println(player.getName()+"擁有"+this.point+"積分，可以和其他玩家換牌");
if(player.isSuccess()==true){
this.point+=score;
}
else if(point>score&&player.isSuccess()==false){
System.out.println("分數已經最低，不可以再扣分了");
}
else if(player.isSuccess()==false){
this.point-=score;
}
System.out.println(player.isSuccess()==true?"你的牌打得忒好了，赢得一場比賽":"同志任需努力，輸了一場比賽");
checkState(score);
System.out.println("積分剩餘："+this.point+"，目前級别："+player.getLevel().getStateName());
}
public void peekCards(int score){
System.out.println(player.getName()+"擁有"+this.point+"積分，可以偷看他人的牌");
if(player.isSuccess()==true){
this.point+=score;
}
else if(point>score&&player.isSuccess()==false){
System.out.println("分數已經最低，不可以再扣分了");
}
else if(player.isSuccess()==false){
this.point-=score;
}
System.out.println(player.isSuccess()==true?"你的牌打得忒好了，赢得一場比賽":"同志任需努力，輸了一場比賽");
checkState(score);
System.out.println("積分剩餘："+this.point+"，目前級别："+player.getLevel().getStateName());
}
}
具體狀态類
package gjStatePattern;
/**
* 具體狀态類
* @author gong
*
*/
public class Gj19PrimaryLevel extends Gj19AbstractLevel {
public Gj19PrimaryLevel(Gj19AbstractLevel level) {
this.player=level.player;
this.point=level.getPoint();
this.stateName="入門級玩家";
}
public Gj19PrimaryLevel(Gj19Player player) {
this.player=player;
this.stateName="入門級玩家";
this.point=;
}
public void doubleScore(int score){
System.out.println("對不起"+player.getName()+",您沒有獲勝雙倍積分的權利");
}
@Override
public void checkState(int score) {
if(this.point>){
player.setLevel(new Gj19FinalLevel(this));
}
else if(this.point>){
player.setLevel(new Gj19ProfessionalLevel(this));
}
else if(this.point>){
player.setLevel(new Gj19SecondaryLevel(this));
}
}
}
具體狀态類
package gjStatePattern;
/**
* 具體狀态類
* @author gong
*
*/
public class Gj19SecondaryLevel extends Gj19AbstractLevel {
public Gj19SecondaryLevel(Gj19AbstractLevel level) {
this.player=level.player;
this.point=level.getPoint();
this.stateName="熟練級玩家";
}
public void changeCards(int score){
System.out.println("對不起"+player.getName()+",您沒有換牌的權利");
}
public void peekCards(int score){
System.out.println("對不起"+player.getName()+",您沒有偷看别人牌的權利");
}
@Override
public void checkState(int score) {
if(this.point>){
player.setLevel(new Gj19FinalLevel(this));
}
else if(this.point>){
player.setLevel(new Gj19ProfessionalLevel(this));
}
else if(this.point<){
player.setLevel(new Gj19PrimaryLevel(this));
}
}
}
具體狀态類
package gjStatePattern;
/**
* 具體狀态類
* @author gong
*
*/
public class Gj19ProfessionalLevel extends Gj19AbstractLevel {
public Gj19ProfessionalLevel(Gj19AbstractLevel level) {
this.player=level.player;
this.point=level.getPoint();
this.stateName="高手級玩家";
}
public void peekCards(int score){
System.out.println("對不起"+player.getName()+",您沒有偷看别人牌的權利");
}
@Override
public void checkState(int score) {
if(this.point>){
player.setLevel(new Gj19FinalLevel(this));
}
else if(this.point<){
player.setLevel(new Gj19PrimaryLevel(this));
}
else if(this.point<){
player.setLevel(new Gj19SecondaryLevel(this));
}
}
}
具體狀态類
package gjStatePattern;
/**
* 具體狀态類
* @author gong
*
*/
public class Gj19FinalLevel extends Gj19AbstractLevel {
public Gj19FinalLevel(Gj19AbstractLevel level) {
this.player=level.player;
this.point=level.getPoint();
this.stateName="骨灰級玩家";
}
@Override
public void checkState(int score) {
if(this.point<){
player.setLevel(new Gj19ProfessionalLevel(this));
}
else if(this.point<){
player.setLevel(new Gj19SecondaryLevel(this));
}
else if(this.point<){
player.setLevel(new Gj19PrimaryLevel(this));
}
}
}
狀态模式用戶端
package gjStatePattern;
/**
* 狀态模式用戶端
* @author gong
*
*/
public class Gj19Client {
public static void main(String[] args) {
Gj19Player player1=new Gj19Player("周小妹");
player1.setSuccess(true);
player1.play();
System.out.println("-----------------------------------------------");
player1.setSuccess(true);
player1.doubleScore();
System.out.println("===============================================");
player1.setSuccess(true);
player1.play();
System.out.println("===============================================");
player1.setSuccess(true);
player1.doubleScore();
System.out.println("-----------------------------------------------");
player1.setSuccess(true);
player1.peekCards();
System.out.println("===============================================");
player1.setSuccess(true);
player1.doubleScore();
System.out.println("===============================================");
}
}
五、運作結果：