学习设计模式儿开发的Java版坦克大战游戏.zip

package com.norton.tank; import java.awt.Graphics; import java.awt.Rectangle; import java.util.Arrays; import java.util.List; import java.util.Random; import com.norton.tank.strategy.DefaultStrategy; import com.norton.tank.strategy.FireStrategy; public class Tank extends GameObject { public static int HEIGHT = ResourceMgr.goodTankU.getHeight(); public static int WIDTH = ResourceMgr.goodTankU.getWidth(); private static final int SPEED = 2; public Dir dir = Dir.DOWN; // private List<TankFireObserver> fireObservers=Arrays.asList(new // TankFireHandler()); FireStrategy fs; public Group group = Group.BAD; private boolean living = true; private boolean moving = true; int oldX, oldY; private Random random = new Random(); public Rectangle rect = new Rectangle(); public Tank(int x, int y, Dir dir, Group group) { super(); this.x = x; this.y = y; this.dir = dir; this.group = group; rect.x = this.x; rect.y = this.y; rect.width = WIDTH; rect.height = HEIGHT; if (group == Group.GOOD) { String goodFSName = (String) PropertyMgr.get("goodFS"); try { // 主战坦克，开火策略 fs=(FireStrategy)Class.forName(goodFSName).getDeclaredConstructor().newInstance(); } catch (Exception e) { e.printStackTrace(); } } else { // 敌方坦克开火策略指定为默认策略 fs=new DefaultStrategy(); } // 将坦克添加到GameModel中 GameModel.getInstance().add(this); } public void back() { x = oldX; y = oldY; } private void boundsCheck() { if (this.x < 2) x = 2; if (this.y < 28) y = 28; if (this.x > Integer.parseInt((String) PropertyMgr.get("gameWidth")) - this.WIDTH - 2) x = Integer.parseInt((String) PropertyMgr.get("gameWidth")) - this.WIDTH - 2; if (this.y > Integer.parseInt((String) PropertyMgr.get("gameHeight")) - this.HEIGHT - 2) y = Integer.parseInt((String) PropertyMgr.get("gameHeight")) - this.HEIGHT - 2; } public void die() { this.living = false; } public void fire() { // 开火 fs.fire(this); } public Dir getDir() { return dir; } public Group getGroup() { return group; } @Override public void paint(Graphics g) { if(!living) //如果死了就从game model中移除 GameModel.getInstance().remove(this); switch (dir) { case LEFT: g.drawImage(this.group == Group.GOOD ? ResourceMgr.goodTankL : ResourceMgr.badTankL, x, y, null); break; case UP: g.drawImage(this.group == Group.GOOD ? ResourceMgr.goodTankU : ResourceMgr.badTankU, x, y, null); break; case RIGHT: g.drawImage(this.group == Group.GOOD ? ResourceMgr.goodTankR : ResourceMgr.badTankR, x, y, null); break; case DOWN: g.drawImage(this.group == Group.GOOD ? ResourceMgr.goodTankD : ResourceMgr.badTankD, x, y, null); break; } move(); } @Override public int getWidth() { // TODO Auto-generated method stub return WIDTH; } public Rectangle getRect() { return rect; } @Override public int getHeight() { // TODO Auto-generated method stub return HEIGHT; } public int getX() { return x; } public int getY() { return y; } // 观察者模式 /* * public void handleFireKey() { TankFireEvent event=new TankFireEvent(this); * for(TankFireObserver o: fireObservers) { o.actionOnFire(event); } } */ public boolean isMoving() { return moving; } private void move() { // 记录移动之前的位置 oldX = x; oldY = y; if (!moving) return; switch (dir) { case LEFT: x -= SPEED; break; case UP: y -= SPEED; break; case RIGHT: x += SPEED; break; case DOWN: y += SPEED; break; } if (this.group == Group.BAD && random.nextInt(100) > 95) this.fire(); if (this.group == Group.BAD && random.nextInt(100) > 95) randomDir(); boundsCheck(); // update rect rect.x = this.x; rect.y = this.y; } private void randomDir() { this.dir = Dir.values()[random.nextInt(4)]; } public void setDir(Dir dir) { this.dir = dir; } public void setGroup(Group group) { this.group = group; } public void setMoving(boolean moving) { this.moving = moving; } public void setX(int x) { this.x = x; } public void setY(int y) { this.y = y; } public void stop() { moving = false; } }