Java实战 坦克大战源代码，将Java中一些主要知识点连接起来

package com.bjsxt.tank; import java.awt.*; import java.awt.event.*; import java.util.*; public class Tank { public static final int XSPEED = 5; public static final int YSPEED = 5; public static final int WIDTH = 30; public static final int HEIGHT = 30; private boolean live = true; private BloodBar bb = new BloodBar(); private int life = 100; TankClient tc; private boolean good; private int x, y; private int oldX, oldY; private static Random r = new Random(); private boolean bL=false, bU=false, bR=false, bD = false; enum Direction {L, LU, U, RU, R, RD, D, LD, STOP}; private Direction dir = Direction.STOP; private Direction ptDir = Direction.D; private int step = r.nextInt(12) + 3; public Tank(int x, int y, boolean good) { this.x = x; this.y = y; this.oldX = x; this.oldY = y; this.good = good; } public Tank(int x, int y, boolean good, Direction dir, TankClient tc) { this(x, y, good); this.dir = dir; this.tc = tc; } public void draw(Graphics g) { if(!live) { if(!good) { tc.tanks.remove(this); } return; } Color c = g.getColor(); if(good) g.setColor(Color.RED); else g.setColor(Color.BLUE); g.fillOval(x, y, WIDTH, HEIGHT); g.setColor(c); if(good) bb.draw(g); switch(ptDir) { case L: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x, y + Tank.HEIGHT/2); break; case LU: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x, y); break; case U: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x + Tank.WIDTH/2, y); break; case RU: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x + Tank.WIDTH, y); break; case R: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x + Tank.WIDTH, y + Tank.HEIGHT/2); break; case RD: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x + Tank.WIDTH, y + Tank.HEIGHT); break; case D: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x + Tank.WIDTH/2, y + Tank.HEIGHT); break; case LD: g.drawLine(x + Tank.WIDTH/2, y + Tank.HEIGHT/2, x, y + Tank.HEIGHT); break; } move(); } void move() { this.oldX = x; this.oldY = y; switch(dir) { case L: x -= XSPEED; break; case LU: x -= XSPEED; y -= YSPEED; break; case U: y -= YSPEED; break; case RU: x += XSPEED; y -= YSPEED; break; case R: x += XSPEED; break; case RD: x += XSPEED; y += YSPEED; break; case D: y += YSPEED; break; case LD: x -= XSPEED; y += YSPEED; break; case STOP: break; } if(this.dir != Direction.STOP) { this.ptDir = this.dir; } if(x < 0) x = 0; if(y < 30) y = 30; if(x + Tank.WIDTH > TankClient.GAME_WIDTH) x = TankClient.GAME_WIDTH - Tank.WIDTH; if(y + Tank.HEIGHT > TankClient.GAME_HEIGHT) y = TankClient.GAME_HEIGHT - Tank.HEIGHT; if(!good) { Direction[] dirs = Direction.values(); if(step == 0) { step = r.nextInt(12) + 3; int rn = r.nextInt(dirs.length); dir = dirs[rn]; } step --; if(r.nextInt(40) > 38) this.fire(); } } private void stay() { x = oldX; y = oldY; } public void keyPressed(KeyEvent e) { int key = e.getKeyCode(); switch(key) { case KeyEvent.VK_F2 : if(!this.live) { this.live = true; this.life = 100; } break; case KeyEvent.VK_LEFT : bL = true; break; case KeyEvent.VK_UP : bU = true; break; case KeyEvent.VK_RIGHT : bR = true; break; case KeyEvent.VK_DOWN : bD = true; break; } locateDirection(); } void locateDirection() { if(bL && !bU && !bR && !bD) dir = Direction.L; else if(bL && bU && !bR && !bD) dir = Direction.LU; else if(!bL && bU && !bR && !bD) dir = Direction.U; else if(!bL && bU && bR && !bD) dir = Direction.RU; else if(!bL && !bU && bR && !bD) dir = Direction.R; else if(!bL && !bU && bR && bD) dir = Direction.RD; else if(!bL && !bU && !bR && bD) dir = Direction.D; else if(bL && !bU && !bR && bD) dir = Direction.LD; else if(!bL && !bU && !bR && !bD) dir = Direction.STOP; } public void keyReleased(KeyEvent e) { int key = e.getKeyCode(); switch(key) { case KeyEvent.VK_CONTROL: fire(); break; case KeyEvent.VK_LEFT : bL = false; break; case KeyEvent.VK_UP : bU = false; break; case KeyEvent.VK_RIGHT : bR = false; break; case KeyEvent.VK_DOWN : bD = false; break; case KeyEvent.VK_A : superFire(); break; } locateDirection(); } public Missile fire() { if(!live) return null; int x = this.x + Tank.WIDTH/2 - Missile.WIDTH/2; int y = this.y + Tank.HEIGHT/2 - Missile.HEIGHT/2; Missile m = new Missile(x, y, good, ptDir, this.tc); tc.missiles.add(m); return m; } public Missile fire(Direction dir) { if(!live) return null; int x = this.x + Tank.WIDTH/2 - Missile.WIDTH/2; int y = this.y + Tank.HEIGHT/2 - Missile.HEIGHT/2; Missile m = new Missile(x, y, good, dir, this.tc); tc.missiles.add(m); return m; } public Rectangle getRect() { return new Rectangle(x, y, WIDTH, HEIGHT); } public boolean isLive() { return live; } public void setLive(boolean live) { this.live = live; } public boolean isGood() { return good; } /** * 撞墙 * @param w 被撞的墙 * @return 撞上了返回true，否则false */ public boolean collidesWithWall(Wall w) { if(this.live && this.getRect().intersects(w.getRect())) { this.stay(); return true; } return false; } public boolean collidesWithTanks(java.util.List<Tank> tanks) { for(int i=0; i<tanks.size(); i++) { Tank t = tanks.get(i); if(this != t) { if(this.live && t.isLive() && this.getRect().intersects(t.getRect())) { this.stay(); t.stay(); return true; } } } return false; } private void superFire() { Direction[] dirs = Direction.values(); for(int i=0; i<8; i++) { fire(dirs[i]); } } public int getLife() { return life; } public void setLife(int life) { this.life = life; } private class BloodBar { public void draw(Graphics g) { Color c = g.getColor(); g.setColor(Color.RED); g.drawRect(x, y-10, WIDTH, 10); int w = WIDTH * life/100 ; g.fillRect(x, y-10, w, 10); g.setColor(c); } } public boolean eat(Blood b) { if(this.live && b.isLive() && this.getRect().intersects(b.getRect())) { this.life = 100; b.setLive(false); return true; } return false; } }