修改坦克速度

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

@@ -1,6 +1,7 @@
 package com.example.tankbattle;
 
-import java.awt.*;
+import java.awt.Graphics;
+import java.awt.Rectangle;
 
 public class Bullet {
     private static final int SPEED = 10;
@@ -11,7 +12,7 @@ public class Bullet {
 
     private boolean living = true;
 
-    private TankFrame tf;
+    private TankFrame tf = null;
 
     private Group group = Group.BAD;
 
@@ -19,8 +20,8 @@ public class Bullet {
         this.x = x;
         this.y = y;
         this.dir = dir;
-        this.tf = tf;
         this.group = group;
+        this.tf = tf;
     }
 
     public void paint(Graphics g) {
@@ -48,7 +49,6 @@ public class Bullet {
     }
 
     private void move() {
-        if (!living) return;
         switch (dir) {
             case LEFT:
                 x -= SPEED;

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

@@ -4,7 +4,7 @@ import java.awt.Graphics;
 import java.util.Random;
 
 public class Tank {
-    private static final int SPEED = 5;
+    private static final int SPEED = 1;
 
     public static int WIDTH = ResourceMgr.tankD.getWidth();
     public static int HEIGHT = ResourceMgr.tankD.getHeight();
@@ -15,7 +15,7 @@ public class Tank {
 
     private Dir dir = Dir.DOWN;
 
-    private boolean moving = false;
+    private boolean moving = true;
 
     private TankFrame tf = null;
 
@@ -23,6 +23,25 @@ public class Tank {
 
     private Group group = Group.BAD;
 
+    public Tank(int x, int y, Dir dir, Group group, TankFrame tf) {
+        super();
+        this.x = x;
+        this.y = y;
+        this.dir = dir;
+        this.tf = tf;
+        this.group = group;
+    }
+
+    public void fire(){
+        int bX = this.x + Tank.WIDTH / 2 - Bullet.WIDTH / 2;
+        int bY = this.y + Tank.HEIGHT / 2 - Bullet.HEIGHT / 2;
+        tf.bullets.add(new Bullet(bX, bY, this.dir, this.group, this.tf));
+    }
+
+    public Dir getDir() {
+        return dir;
+    }
+
     public int getX() {
         return x;
     }
@@ -55,24 +74,10 @@ public class Tank {
         this.moving = moving;
     }
 
-    public Dir getDir() {
-        return dir;
-    }
-
     public void setDir(Dir dir) {
         this.dir = dir;
     }
 
-
-    public Tank(int x, int y, Dir dir, Group group, TankFrame tf) {
-        super();
-        this.x = x;
-        this.y = y;
-        this.dir = dir;
-        this.tf = tf;
-        this.group = group;
-    }
-
     public void paint(Graphics g) {
         if (!living) tf.tanks.remove(this);
         switch (dir) {
@@ -116,12 +121,6 @@ public class Tank {
         if (random.nextInt(10) > 5) this.fire();
     }
 
-    public void fire(){
-        int bX = this.x + Tank.WIDTH / 2 - Bullet.WIDTH / 2;
-        int bY = this.y + Tank.HEIGHT / 2 - Bullet.HEIGHT / 2;
-        tf.bullets.add(new Bullet(bX, bY, this.dir, this.group, this.tf));
-    }
-
     public void die() {
         this.living = false;
     }

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

@@ -15,8 +15,8 @@ public class TankFrame extends Frame {
 
     Tank myTank = new Tank(200, 400, Dir.DOWN, Group.GOOD, this);
 
-    List<Tank> tanks = new ArrayList<>();
     List<Bullet> bullets = new ArrayList<>();
+    List<Tank> tanks = new ArrayList<>();
 	public static final int GAME_WIDTH = 800,GAME_HEIGHT=600;
 
 	public TankFrame() {
@@ -66,9 +66,8 @@ public class TankFrame extends Frame {
         }
 
         for (int i = 0; i < bullets.size(); i++) {
-            for (int j = 0; j < tanks.size(); j++) {
+            for (int j = 0; j < tanks.size(); j++)
                 bullets.get(i).collideWith(tanks.get(j));
-            }
         }
 //        for (Iterator<Bullet> it = bullets.iterator(); it.hasNext()) {
 //            Bullet b = it.next();