贪吃蛇

package 贪吃蛇;import java.awt.*;public class Food {private int x,y;public Food(){this.x = (int)(Math.random()*20)*20;//System.out.println(x);this.y = (int)(Math.random()*20)*20;//System.out.println(y);}public void isEat(){this.x = (int)(Math.random()*20)*20;this.y = (int)(Math.random()*20)*20;}public void paint(Graphics g){Color c = g.getColor();g.setColor(Color.yellow);g.fillOval(this.x,this.y,20,20);g.setColor(c);}public void setY(int y) {this.y = y;}public void setX(int x) {this.x = x;}public int getY() {return y;}public int getX() {return x;}
}

package 贪吃蛇;import java.awt.*;public class Map {public void paint(Graphics g){for(int i = 0;i < 21;i++){g.drawLine(0,20*i,400,20*i);g.drawLine(20*i,0,20*i,400);}}
}

package 贪吃蛇;import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;public class Main extends JPanel {private Map map;private Snake snake;private Food food;private int score;private boolean stop_or_move;public Main(){stop_or_move = false;this.setPreferredSize(new Dimension(400,400));this.restart();this.setBackground(Color.cyan);//this.repaint();}public void restart(){this.score = 0;map = new Map();snake = new Snake();food = new Food();}public void eat(){if(snake.getSnake_head().getX() == food.getX() && snake.getSnake_head().getY() == food.getY()){food.isEat();snake.body_add();this.score += 3;//snake.setBody_length(snake.getBody_length()+1);}}//判断食物是否与蛇重叠public boolean food_ins_snake(){if(snake.getSnake_head().getX() == food.getX() && snake.getSnake_head().getY() == food.getY()){System.out.println("食物与蛇头重叠！");return true;}for(int i = 0;i < snake.getArrayList().size();i++){if(snake.getArrayList().get(i).getX() == food.getX() && snake.getArrayList().get(i).getY() == food.getY()){System.out.println("食物与身体重叠！");return true;}}return false;}public void paint(Graphics g){super.paint(g);map.paint(g);//System.out.println(snake.getSnake_head().getX());snake.paint(g);while (food_ins_snake()){food.isEat();}food.paint(g);if(!snake.isLive()){Color c = g.getColor();Font f  = g.getFont();g.setFont(new Font("STXingshu",Font.PLAIN,30));g.setColor(Color.red);g.drawString("游戏结束！",150,160);g.setColor(c);g.setFont(f);}if(!stop_or_move){Color c = g.getColor();Font f  = g.getFont();g.setFont(new Font("STXingshu",Font.BOLD,30));g.setColor(Color.black);g.drawString("按“空格键”开始",80,200);g.setColor(c);g.setFont(f);}// g.fillOval(60,60,10,10);}public Food getFood() {return food;}public Map getMap() {return map;}public Snake getSnake() {return snake;}public void setScore(int score) {this.score = score;}public int getScore() {return score;}public boolean isStop_or_move() {return stop_or_move;}public void setStop_or_move(boolean stop_or_move) {this.stop_or_move = stop_or_move;}
}

package 贪吃蛇;import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;public class Test extends JFrame implements KeyListener,Runnable {Main m;MyPanel myPanel;int speed;public Test() {speed = 500;JFrame jf = new JFrame("贪吃蛇");Container c = jf.getContentPane();m = new Main();myPanel = new MyPanel();myPanel.setPreferredSize(new Dimension(100,0));jf.setFocusable(true);jf.addKeyListener(this);c.add(m,BorderLayout.CENTER);c.add(myPanel,BorderLayout.EAST);jf.setBounds(100, 100, 518, 440);jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);jf.setVisible(true);}public static void main(String[] args) {new Thread(new Test()).start();}@Overridepublic void keyTyped(KeyEvent e) {}@Overridepublic void keyPressed(KeyEvent e) {// System.out.println(e.getKeyChar());this.setFocusable(true);switch (e.getKeyCode()) {case KeyEvent.VK_UP:if(m.getSnake().getDirection_now() != 2)//防逆行！！！m.getSnake().setDirection(0);break;case KeyEvent.VK_LEFT:if(m.getSnake().getDirection_now() != 3)m.getSnake().setDirection(1);break;case KeyEvent.VK_DOWN:if(m.getSnake().getDirection_now() != 0)m.getSnake().setDirection(2);break;case KeyEvent.VK_RIGHT:if(m.getSnake().getDirection_now() != 1)m.getSnake().setDirection(3);break;case KeyEvent.VK_SPACE://暂停&&启动m.setStop_or_move(!m.isStop_or_move());break;case KeyEvent.VK_R://重新开始m.restart();break;}}@Overridepublic void keyReleased(KeyEvent e) {}@Overridepublic void run() {while (true) {//this.requestFocus();//System.out.println(m.getSnake().isLive());// System.out.println(m.getSnake().getSnake_head().getX()+"，"+m.getSnake().getSnake_head().getY());try {Thread.sleep(speed);} catch (Exception e) {e.printStackTrace();}if(m.getSnake().isLive() && m.isStop_or_move()){// System.out.println("执行");////有毛病，为啥重画了？？？//问题找到！！switch穿透导致重画！！！！！// if(stop_or_move){//true 为move//    m.getSnake().move();// }m.getSnake().move();}//System.out.println(""+m.getFood().getX()+","+m.getFood().getY());m.eat();myPanel.getScore_text().setText(m.getScore()+"");m.repaint();if(myPanel.jc.getSelectedItem()!= null){Integer a = (Integer) myPanel.jc.getSelectedItem();speed = 500 - a.intValue()*50;myPanel.jc.setFocusable(false);}//System.out.println(""+speed);}}
}

package 贪吃蛇;import javax.swing.*;public class MyComboBox extends AbstractListModel<Integer> implements ComboBoxModel<Integer>{Integer speed = null;Integer[] test = {1,2,3,4,5,6,7,8,9};@Overridepublic void setSelectedItem(Object anItem) {speed = (Integer)anItem;}@Overridepublic Object getSelectedItem() {return speed;}@Overridepublic int getSize() {return test.length;}@Overridepublic Integer getElementAt(int index) {return test[index];}
}

package 贪吃蛇;import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;public class MyPanel extends JPanel {private JLabel score;private JLabel score_text;JComboBox<Integer> jc = new JComboBox<>(new MyComboBox());JLabel jl = new JLabel("选择速度：");public MyPanel(){this.setLayout(null);this.setBackground(Color.blue);score = new JLabel("分数：");score.setOpaque(true);//设置为不透明score.setBackground(Color.red);score.setForeground(Color.blue);score.setLocation(10,60);score.setSize(60,30);this.add(score);score_text = new JLabel();score_text.setOpaque(true);score_text.setBackground(Color.BLACK);score_text.setForeground(Color.red);//设置标签字体颜色score_text.setLocation(10,100);Font f = new Font("宋体", Font.BOLD,36);score_text.setFont(f);score_text.setSize(60,40);this.add(score_text);jl.setOpaque(true);jl.setBackground(Color.yellow);jl.setForeground(Color.cyan);jl.setBounds(10,160,60,30);this.add(jl);jc.setBounds(10,200,60,30);this.add(jc);}public JLabel getScore() {return score;}public JLabel getScore_text() {return score_text;}public void setScore(JLabel score) {this.score = score;}public void setScore_text(JLabel score_text) {this.score_text = score_text;}
}

package 贪吃蛇;import java.awt.*;public class Snake_Body {private int x,y;public Snake_Body(int x,int y){this.x = x;this.y = y;}public void paint(Graphics g){Color c = g.getColor();g.setColor(Color.green);g.fillOval(this.x,this.y,20,20);g.setColor(c);}public int getX() {return x;}public int getY() {return y;}public void setX(int x) {this.x = x;}public void setY(int y) {this.y = y;}
}

package 贪吃蛇;import java.awt.*;//
public class Snake_Head {private int x,y;public Snake_Head(){this.x = 60;this.y = 60;}public void paint(Graphics g){Color c = g.getColor();g.setColor(Color.red);g.fillOval(this.x,this.y,20,20);g.setColor(c);}public void setX(int x){this.x = x;}public int getX(){return this.x;}public void setY(int y){this.y = y;}public int getY(){return this.y;}
}

package 贪吃蛇;import java.awt.*;
import java.util.ArrayList;public class Snake {private Snake_Head snake_head;private ArrayList<Snake_Body> arrayList;private Snake_Body[] snake_bodies = new Snake_Body[400];private int direction;private int direction_now;private int body_length;private boolean isLive;public Snake(){this.snake_head = new Snake_Head();arrayList = new ArrayList<Snake_Body>();snake_bodies[0] = new Snake_Body(40,60);snake_bodies[1] = new Snake_Body(20,60);arrayList.add(snake_bodies[0]);arrayList.add(snake_bodies[1]);this.direction = 3;this.direction_now = 3;this.body_length = 2;this.isLive = true;}public void paint(Graphics g){snake_head.paint(g);for(int i = 0;i < body_length ;i++){arrayList.get(i).paint(g);}}public void body_add(){int ax = arrayList.get(arrayList.size()-1).getX();int ay = arrayList.get(arrayList.size()-1).getY();snake_bodies[arrayList.size()] = new Snake_Body(ax,ay);arrayList.add(snake_bodies[arrayList.size()]);body_length++;}public void move(){// System.out.println("move()执行");// System.out.println(this.snake_head.getX()+","+this.snake_head.getY());if(this.snake_head.getX() < 0 || this.snake_head.getX() > 380|| this.snake_head.getY() < 0 || this.snake_head.getY() > 380){//System.out.println("判断执行");//未执行？？？this.isLive = false;if(this.getSnake_head().getX() < 0)this.getSnake_head().setX(0);if(this.getSnake_head().getX() > 380)this.getSnake_head().setX(380);if(this.getSnake_head().getY() < 0)this.getSnake_head().setY(0);if(this.getSnake_head().getY() > 380)this.getSnake_head().setY(380);}for(int i = 0;i < arrayList.size();i++){if(snake_head.getX() == arrayList.get(i).getX() && snake_head.getY() == arrayList.get(i).getY()){this.isLive = false;}}if(isLive){switch (direction){case 0://向上this.body_move();snake_head.setY(snake_head.getY()-20);break;case 1://向左this.body_move();snake_head.setX(snake_head.getX()-20);break;case 2://向下this.body_move();snake_head.setY(snake_head.getY()+20);break;case 3://向右this.body_move();snake_head.setX(snake_head.getX()+20);break;}this.direction_now = direction;//不加这一句在快速按“左下”之类的操作时蛇会逆行！！！！}}public void body_move(){for(int i  = arrayList.size()-1;i >= 0;i--){if(i != 0){arrayList.get(i).setX(arrayList.get(i-1).getX());arrayList.get(i).setY(arrayList.get(i-1).getY());}else {arrayList.get(0).setX(snake_head.getX());arrayList.get(0).setY(snake_head.getY());}}}public ArrayList<Snake_Body> getArrayList() {return arrayList;}public int getBody_length() {return body_length;}public int getDirection() {return direction;}public int getDirection_now() {return direction_now;}public Snake_Head getSnake_head() {return snake_head;}public void setArrayList(ArrayList<Snake_Body> arrayList) {this.arrayList = arrayList;}public void setBody_length(int body_length) {this.body_length = body_length;}public void setDirection(int direction) {this.direction = direction;}public void setDirection_now(int direction_now) {this.direction_now = direction_now;}public void setSnake_head(Snake_Head snake_head) {this.snake_head = snake_head;}public boolean isLive() {return isLive;}public void setLive(boolean live) {isLive = live;}
}

在这里插入代码片