【java】控制台实现贪吃蛇小游戏-LinkedList、Scanner

 package com.myproj.snake; public class Node {
     private int i,j;
     public Node(){}
     public Node(int i, int j) {
         super();
         this.i = i;
         this.j = j;
     }     public int getI() {
         return i;
     }     public void setI(int i) {
         this.i = i;
     }     public int getJ() {
         return j;
     }     public void setJ(int j) {
         this.j = j;
     }
     @Override
     public int hashCode() {
         final int prime = 31;
         int result = 1;
         result = prime * result + i;
         result = prime * result + j;
         return result;
     }
     @Override
     public boolean equals(Object obj) {
         if (this == obj)
             return true;
         if (obj == null)
             return false;
         if (getClass() != obj.getClass())
             return false;
         Node other = (Node) obj;
         if (i != other.i)
             return false;
         if (j != other.j)
             return false;
         return true;
     } }

Node.java

 package com.myproj.snake; import java.util.LinkedList; public class Snake {
     private LinkedList<Node> nodes=new LinkedList<Node>();
     public static final int UP=-5;
     public static final int DOWN=5;
     public static final int LEFT=-1;
     public static final int RIGHT=1;
     private int dir;//当前方向；
     public Snake(){
         nodes.add(new Node(3,9));
         nodes.add(new Node(4,9));
         nodes.add(new Node(5,9));
         nodes.add(new Node(5,10));
         nodes.add(new Node(5,11));
         nodes.add(new Node(6,11));
         nodes.add(new Node(7,11));
         this.dir=RIGHT;
     }
     public boolean contains(int i,int j){
         return nodes.contains(new Node(i,j));
     }
     public void move(){
         nodes.removeLast();
         Node head=nodes.getFirst();
         int i=head.getI()+dir/5;
         int j=head.getJ()+dir%5;
         nodes.addFirst(new Node(i,j));
     }
     public void move(int dir){
         if(this.dir+dir==0){
             System.out.println("不能逆向行驶！");
             System.out.println("游戏终止！");
             System.exit(0);
         }
         this.dir=dir;
         move();
     }
 }

Snake.java

 package com.myproj.snake; public class SnakePan {
     private Snake snake=new Snake();
     public Snake getSnake() {
         return snake;
     }
     public void setSnake(Snake snake) {
         this.snake = snake;
     }
     public void paint(){
         for(int i=0;i<=15;i++){
             for(int j=0;j<=40;j++){
                 if(i==0||i==15){
                     System.out.print("-");
                 }else if(j==0||j==40){
                     System.out.print("|");
                 }else if(snake.contains(i,j)){
                     System.out.print("■");
                 }else{
                     System.out.print(" ");
                 }
             }
             System.out.println();
         }
     }
 }

SnakePan

 package com.myproj.snake; import java.util.Scanner; public class SnakeTest {
     public static void main(String[] args){
         SnakePan snakePan=new SnakePan();
         Snake snake=snakePan.getSnake();
         snakePan.paint();
         /*for(int i=0;i<10;i++){
             snakePan.paint();
             snake.move();
             try {
                 Thread.sleep(1000);
             } catch (InterruptedException e) {
                 // TODO Auto-generated catch block
                 e.printStackTrace();
             }
         }*/         Scanner scanner=new Scanner(System.in);
         System.out.println("请输入方向【上（U）、下（D）、左（L）、右（R）】：");
         while(true){
             String dir=scanner.nextLine();
             if(dir.equalsIgnoreCase("U")){
                 snake.move(snake.UP);
             }else if(dir.equalsIgnoreCase("D")){
                 snake.move(snake.DOWN);
             }else if(dir.equalsIgnoreCase("L")){
                 snake.move(snake.LEFT);
             }else if(dir.equalsIgnoreCase("R")){
                 snake.move(snake.RIGHT);
             }else{
                 System.exit(0);
             }
             snakePan.paint();
         }
     }
 }

SnakeTest.java