修改代码格式

src/main/java/com/example/tankbattle/Bullet.java

@@ -1,11 +1,12 @@
 package com.example.tankbattle;
 
-import java.awt.*;
+import java.awt.Graphics;
+import java.awt.Color;
 
 public class Bullet {
     public static final int SPEED = 10;
-    private static final int WIDTH=5, HEIGHT = 5;
-    private int x,y;
+    private static final int WIDTH = 5, HEIGHT = 5;
+    private int x, y;
     private Dir dir;
 
     public Bullet(int x, int y, Dir dir) {
@@ -14,11 +15,11 @@ public class Bullet {
         this.dir = dir;
     }
 
-    public void paint(Graphics graphics) {
-        Color color = graphics.getColor();
-        graphics.setColor(Color.RED);
-        graphics.fillOval(x, y, 50, 50);
-        graphics.setColor(color);
+    public void paint(Graphics g) {
+        Color c = g.getColor();
+        g.setColor(Color.RED);
+        g.fillOval(x, y, 50, 50);
+        g.setColor(c);
         move();
     }
 
@@ -27,12 +28,13 @@ public class Bullet {
             case LEFT:
                 x -= SPEED;
                 break;
-            case RIGHT:
-                x += SPEED;
-                break;
             case UP:
                 y -= SPEED;
                 break;
+            case RIGHT:
+                x += SPEED;
+                break;
+
             case DOWN:
                 y += SPEED;
                 break;

src/main/java/com/example/tankbattle/Dir.java

@@ -1,5 +1,5 @@
 package com.example.tankbattle;
 
 public enum Dir {
-    LEFT, UP, RIGHT, DOWN,
+    LEFT, UP, RIGHT, DOWN
 }

src/main/java/com/example/tankbattle/Main.java

@@ -1,7 +1,7 @@
 package com.example.tankbattle;
 
 public class Main {
-    public static void main(String[] args) throws Exception {
+    public static void main(String[] args) throws InterruptedException {
         TankFrame tankFrame = new TankFrame();
         while (true) {
             Thread.sleep(50);

src/main/java/com/example/tankbattle/Tank.java

@@ -8,15 +8,15 @@ public class Tank {
     private Dir dir = Dir.DOWN;
     public static final int SPEED = 5;
 
-    private TankFrame tankFrame = null;
+    private TankFrame tf = null;
 
     private boolean moving = false;
 
-    public Tank(int x, int y, Dir dir, TankFrame tankFrame) {
+    public Tank(int x, int y, Dir dir, TankFrame tf) {
         this.x = x;
         this.y = y;
         this.dir = dir;
-        this.tankFrame = tankFrame;
+        this.tf = tf;
     }
 
     public boolean isMoving() {
@@ -31,16 +31,16 @@ public class Tank {
         this.dir = dir;
     }
 
-    public void paint(Graphics graphics) {
-        Color color = graphics.getColor();
-        graphics.setColor(Color.YELLOW);
-        graphics.fillRect(x, y, 50, 50);
-        graphics.setColor(color);
+    public void paint(Graphics g) {
+        Color c = g.getColor();
+        g.setColor(Color.YELLOW);
+        g.fillRect(x, y, 50, 50);
+        g.setColor(c);
         move();
     }
 
     public void fire(){
-        tankFrame.bullets.add(new Bullet(this.x, this.y, this.dir));
+        tf.bullets.add(new Bullet(this.x, this.y, this.dir));
     }
 
     private void move() {
@@ -51,12 +51,12 @@ public class Tank {
             case LEFT:
                 x -= SPEED;
                 break;
-            case RIGHT:
-                x += SPEED;
-                break;
             case UP:
                 y -= SPEED;
                 break;
+            case RIGHT:
+                x += SPEED;
+                break;
             case DOWN:
                 y += SPEED;
                 break;

src/main/java/com/example/tankbattle/TankFrame.java

@@ -10,14 +10,9 @@ import java.util.List;
 
 public class TankFrame extends Frame {
 
-    private static int x = 200, y = 200;
-
-    Dir dir = Dir.DOWN;
-
     private static final int SPEED = 10;
 
-    Tank tankA = new Tank(200, 200, Dir.DOWN,this);
-    Tank tankB = new Tank(200, 200, Dir.DOWN,this);
+    Tank myTank = new Tank(200, 200, Dir.DOWN, this);
 
     private static final int GAME_WIDTH = 800,GAME_HEIGHT=600;
 
@@ -46,20 +41,20 @@ public class TankFrame extends Frame {
             offScreenImage = createImage(GAME_WIDTH, GAME_HEIGHT);
         }
         Graphics gOffScreen = offScreenImage.getGraphics();
-        Color color = gOffScreen.getColor();
+        Color c = gOffScreen.getColor();
         gOffScreen.setColor(Color.BLACK);
         gOffScreen.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
-        gOffScreen.setColor(color);
+        gOffScreen.setColor(c);
         paint(gOffScreen);
         g.drawImage(offScreenImage, 0, 0, null);
     }
 
     @Override
-    public void paint(Graphics graphics) {
-        tankA.paint(graphics);
-        bullet.paint(graphics);
+    public void paint(Graphics g) {
+        myTank.paint(g);
+        bullet.paint(g);
         for (Bullet bullet1 : bullets) {
-            bullet.paint(graphics);
+            bullet.paint(g);
         }
     }
 
@@ -111,7 +106,7 @@ public class TankFrame extends Frame {
                     bD = false;
                     break;
                 case KeyEvent.VK_CONTROL:
-                    tankA.fire();
+                    myTank.fire();
                     break;
                 default:
                     break;
@@ -122,21 +117,13 @@ public class TankFrame extends Frame {
 
         private void setMainTankDir() {
             if (!bL && !bR && !bU && !bD) {
-                tankA.setMoving(false);
+                myTank.setMoving(false);
             } else {
-                tankA.setMoving(true);
-                if (bL) {
-                    tankA.setDir(Dir.LEFT);
-                }
-                if (bR) {
-                    tankA.setDir(Dir.RIGHT);
-                }
-                if (bU) {
-                    tankA.setDir(Dir.UP);
-                }
-                if (bD) {
-                    tankA.setDir(Dir.DOWN);
-                }
+                myTank.setMoving(true);
+                if (bL) myTank.setDir(Dir.LEFT);
+                if (bR) myTank.setDir(Dir.RIGHT);
+                if (bU) myTank.setDir(Dir.UP);
+                if (bD) myTank.setDir(Dir.DOWN);
             }
         }
     }