随机食物生成器（JAVA贪吃蛇课程怎么处理食物的随机性）

本文目录

• JAVA贪吃蛇课程怎么处理食物的随机性
• 中午吃什么随机生成器，今天中午吃什么

JAVA贪吃蛇课程怎么处理食物的随机性

import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.image.BufferedImage; import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; public class InterFace extends JFrame { /*** WIDTH:宽* HEIGHT:高* SLEEPTIME:可以看作蛇运动的速度* L = 1,R = 2, U = 3, D = 4 左右上下代码*/public static final int WIDTH = 800, HEIGHT = 600, SLEEPTIME = 200, L = 1,R = 2, U = 3, D = 4; BufferedImage offersetImage= new BufferedImage(WIDTH, HEIGHT,BufferedImage.TYPE_3BYTE_BGR);; Rectangle rect = new Rectangle(20, 40, 15 * 50, 15 * 35); Snake snake; Node node; public InterFace() { //创建"蛇"对象snake = new Snake(this); //创建"食物"对象createNode(); this.setBounds(100, 100, WIDTH, HEIGHT);//添加键盘监听器this.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent arg0) { System.out.println(arg0.getKeyCode()); switch (arg0.getKeyCode()) { //映射上下左右4个键位case KeyEvent.VK_LEFT: snake.dir = L; break; case KeyEvent.VK_RIGHT: snake.dir = R; break; case KeyEvent.VK_UP: snake.dir = U; break; case KeyEvent.VK_DOWN: snake.dir = D; } } }); this.setTitle("贪吃蛇 0.1 By ： Easy"); this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setVisible(true); //启动线程,开始执行new Thread(new ThreadUpadte()).start(); } public void paint(Graphics g) { Graphics2D g2d = (Graphics2D) offersetImage.getGraphics(); g2d.setColor(Color.white); g2d.fillRect(0, 0, WIDTH, HEIGHT); g2d.setColor(Color.black); g2d.drawRect(rect.x, rect.y, rect.width, rect.height); //如果蛇碰撞(吃)到食物，则创建新食物if (snake.hit(node)) { createNode(); } snake.draw(g2d); node.draw(g2d); g.drawImage(offersetImage, 0, 0, null); } class ThreadUpadte implements Runnable { public void run() { //无限重绘画面while (true) { try { Thread.sleep(SLEEPTIME); repaint(); //} catch (InterruptedException e) { e.printStackTrace(); } } } } /*** 创建食物*/public void createNode() { //随机食物的出现位置int x = (int) (Math.random() * 650) + 50,y = (int) (Math.random() * 500) + 50; Color color = Color.blue; node = new Node(x, y, color); } public static void main(String args) { new InterFace(); } } /*** 节点类(包括食物和蛇的身躯组成节点)*/class Node { int x, y, width = 15, height = 15; Color color; public Node(int x, int y, Color color) { this(x, y); this.color = color; } public Node(int x, int y) { this.x = x; this.y = y; this.color = color.black; } public void draw(Graphics2D g2d) { g2d.setColor(color); g2d.drawRect(x, y, width, height); } public Rectangle getRect() { return new Rectangle(x, y, width, height); } } /*** 蛇*/class Snake { public List《Node》 nodes = new ArrayList《Node》(); InterFace interFace; int dir=InterFace.R; public Snake(InterFace interFace) { this.interFace = interFace; nodes.add(new Node(20 + 150, 40 + 150)); addNode(); }/*** 是否碰撞到食物* @return true 是 false 否*/public boolean hit(Node node) { //遍历整个蛇体是否与食物碰撞for (int i = 0; i 《 nodes.size(); i++) { if (nodes.get(i).getRect().intersects(node.getRect())) { addNode(); return true; } } return false; } public void draw(Graphics2D g2d) { for (int i = 0; i 《 nodes.size(); i++) { nodes.get(i).draw(g2d); } move(); } public void move() { nodes.remove((nodes.size() - 1)); addNode(); } public synchronized void addNode() { Node nodeTempNode = nodes.get(0); //如果方向switch (dir) { case InterFace.L://判断是否会撞墙if (nodeTempNode.x 《= 20) { nodeTempNode = new Node(20 + 15 * 50, nodeTempNode.y); } nodes.add(0, new Node(nodeTempNode.x - nodeTempNode.width, nodeTempNode.y)); break; case InterFace.R: //判断是否会撞墙if (nodeTempNode.x 》= 20 + 15 * 50 - nodeTempNode.width) { nodeTempNode = new Node(20 - nodeTempNode.width, nodeTempNode.y); } nodes.add(0, new Node(nodeTempNode.x + nodeTempNode.width, nodeTempNode.y)); break; case InterFace.U: //判断是否会撞墙if (nodeTempNode.y 《= 40) { nodeTempNode = new Node(nodeTempNode.x, 40 + 15 * 35); } nodes.add(0, new Node(nodeTempNode.x, nodeTempNode.y - nodeTempNode.height)); break; case InterFace.D://判断是否会撞墙if (nodeTempNode.y 》= 40 + 15 * 35 - nodeTempNode.height) { nodeTempNode = new Node(nodeTempNode.x,40 - nodeTempNode.height); } nodes.add(0, new Node(nodeTempNode.x, nodeTempNode.y + nodeTempNode.height)); break; } } }

中午吃什么随机生成器，今天中午吃什么

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