From 68b6785ee81365b7d4d8d8bfc89db817941cedc8 Mon Sep 17 00:00:00 2001
From: pau8rgc4f <1796433808@qq.com>
Date: Tue, 16 May 2023 19:09:14 +0800
Subject: [PATCH] =?UTF-8?q?Add=20=E5=A4=A7=E9=B1=BC=E5=90=83=E5=B0=8F?=
 =?UTF-8?q?=E9=B1=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 大鱼吃小鱼 | 200 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 200 insertions(+)
 create mode 100644 大鱼吃小鱼

diff --git a/大鱼吃小鱼 b/大鱼吃小鱼
new file mode 100644
index 0000000..850668e
--- /dev/null
+++ b/大鱼吃小鱼
@@ -0,0 +1,200 @@
+package game;
+import java.awt.Graphics;
+import java.awt.Image;
+import java.awt.Toolkit;
+import java.awt.event.KeyEvent;
+import java.util.List;
+
+public class MyFish extends GameObject{
+    boolean bU = false, bR = false, bD = false, bL = false;//四个方向的键是否被按下的布尔量
+    public int scores = 0;//玩家的游戏积分
+
+    /**
+     * 加载我方小鱼的图片
+     */
+    private static Toolkit tk = Toolkit.getDefaultToolkit();//拿到系统的工具包
+    private static Image myFish_left = null;//朝左的图片
+    private static Image myFish_
+        right = null;//朝右的图片
+
+    //在静态代码区中完成对图片的加载
+    static{
+        myFish_left = tk.createImage(MyFish.class.getClassLoader().getResource("images/myFish/myfish_left.gif"));
+        myFish_right = tk.createImage(MyFish.class.getClassLoader().getResource("images/myFish/myfish_right.gif"));
+    }
+
+
+    public MyFish(int x, int y, FishFrame ff) {
+        super();
+        this.x = x;
+        this.y = y;
+        this.xSpeed = 5;
+        this.ySpeed = 5;
+        this.dir = Direction.STOP;
+        this.width = 40;
+        this.height = 40;
+        this.ff = ff;
+    }
+
+    public void draw(Graphics g) {
+        if(!live) return;
+        if(dir == Direction.U || dir == Direction.RU || dir == Direction.R || dir == Direction.RD){
+            g.drawImage(myFish_right, x, y, width, height, null);
+        }else{
+            g.drawImage(myFish_left, x, y, width, height, null);
+        }
+        move();//每画一次就改变鱼的坐标
+    }
+
+    /**
+     * 按下键盘鱼的方向改变
+     * @param e
+     */
+    public void keyPressed(KeyEvent e) {
+        int key = e.getKeyCode();
+        switch(key) {
+            case KeyEvent.VK_W :
+                bU = true;
+                break;
+            case KeyEvent.VK_D :
+                bR = true;
+                break;
+            case KeyEvent.VK_S :
+                bD = true;
+                break;
+            case KeyEvent.VK_A :
+                bL = true;
+                break;
+        }
+        getDirection();//获得鱼当前的方向
+    }
+
+    /**
+     * 释放键盘鱼的四个方向布尔值设置为false
+     * @param e
+     */
+    public void keyRelease(KeyEvent e) {
+        int key = e.getKeyCode();
+        switch(key) {
+            case KeyEvent.VK_W :
+                bU = false;
+                break;
+            case KeyEvent.VK_D :
+                bR = false;
+                break;
+            case KeyEvent.VK_S :
+                bD = false;
+                break;
+            case KeyEvent.VK_A :
+                bL = false;
+                break;
+        }
+        getDirection();//获得鱼当前的方向
+    }
+
+    /**
+     * 根据四个方向的布尔量判断小鱼的方向
+     */
+    private void getDirection() {
+        if(bU && !bR && !bD && !bL) dir = Direction.U;
+        else if(bU && bR && !bD && !bL) dir = Direction.RU;
+        else if(!bU && bR && !bD && !bL) dir = Direction.R;
+        else if(!bU && bR && bD && !bL) dir = Direction.RD;
+        else if(!bU && !bR && bD && !bL) dir = Direction.D;
+        else if(!bU && !bR && bD && bL) dir = Direction.LD;
+        else if(!bU && !bR && !bD && bL) dir = Direction.L;
+        else if(bU && !bR && !bD && bL) dir = Direction.LU;
+        else if(!bU && !bR && !bD && !bL) dir = Direction.STOP;
+    }
+
+    /**
+     * 移动,即改变坐标
+     */
+    private void move() {
+
+        switch(dir) {
+            case U :
+                y -= ySpeed;
+                break;
+            case RU :
+                y -= ySpeed;
+                x += xSpeed;
+                break;
+            case R :
+                x += xSpeed;
+                break;
+            case RD :
+                y += ySpeed;
+                x += xSpeed;
+                break;
+            case D :
+                y += ySpeed;
+                break;
+            case LD :
+                y += ySpeed;
+                x -= xSpeed;
+                break;
+            case L :
+                x -= xSpeed;
+                break;
+            case LU :
+                y -= ySpeed;
+                x -= xSpeed;
+                break;
+        }
+
+        //防止鱼出界
+        if(x < 2) x = 2;
+        if(y < 31) y = 31;
+        if(x > FishFrame.GAME_WIDTH - width) x = FishFrame.GAME_WIDTH - width;
+        if(y > FishFrame.GAME_HEIGHT - height) y = FishFrame.GAME_HEIGHT - height;
+    }
+
+    /**
+     * 通过两条小鱼的碰撞检测判断是否吃掉小鱼
+     * @param ef
+     * @return
+     */
+    public boolean eatFish(EnemyFish ef) {
+        if(this.live && ef.live && this.getRectangle().intersects(ef.getRectangle())
+                && this.width > ef.width) {
+            ef.live = false;
+            int radius = r.nextInt(3) + 5;
+            this.width += radius;
+            this.height += radius;
+            this.scores += r.nextInt(15);
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * 吃掉多条小鱼
+     * @param list
+     * @return
+     */
+    public boolean eatFishs(List<EnemyFish> list) {
+        for(EnemyFish e : list) {
+            if(this.eatFish(e)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * 玩家的小鱼可以被吃掉
+     * @param list
+     * @return
+     */
+    public boolean beEaten(List<EnemyFish> list) {
+        for(EnemyFish e : list) {
+            if(live && e.live && this.getRectangle().intersects(e.getRectangle())
+                    && this.width <= e.width){
+                this.live = false;
+                return true;
+            }
+        }
+        return false;
+    }
+}