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

@@ -7,9 +7,6 @@ public class Bullet {
     private static final int SPEED = 6;
     public static int WIDTH = ResourceMgr.bulletD.getWidth();
     public static int HEIGHT = ResourceMgr.bulletD.getHeight();
-
-    private Rectangle rect = new Rectangle();
-
     private int x, y;
     private Dir dir;
 
@@ -23,11 +20,6 @@ public class Bullet {
         this.dir = dir;
         this.group = group;
         this.tf = tf;
-
-        rect.x = this.x;
-        rect.y = this.y;
-        rect.width = WIDTH;
-        rect.height = HEIGHT;
     }
 
     public Group getGroup() {
@@ -81,15 +73,14 @@ public class Bullet {
                 break;
         }
 
-        rect.x = this.x;
-        rect.y = this.y;
-
         if (x < 0 || y < 0 || x > TankFrame.GAME_WIDTH || y > TankFrame.GAME_HEIGHT) living = false;
     }
 
     public void collideWith(Tank tank){
         if (this.group == tank.getGroup()) return;
-        if (this.rect.intersects(tank.rect)) {
+        Rectangle rect1 = new Rectangle(this.x, this.y, WIDTH, HEIGHT);
+        Rectangle rect2 = new Rectangle(tank.getX(), tank.getY(), Tank.WIDTH, Tank.HEIGHT);
+        if (rect1.intersects(rect2)) {
             tank.die();
             this.die();
             int eX = tank.getX() + Tank.WIDTH / 2 - Explode.WIDTH / 2;

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

@@ -1,6 +1,6 @@
 package com.example.tankbattle;
 
-import java.awt.*;
+import java.awt.Graphics;
 import java.util.Random;
 
 public class Tank {
@@ -9,8 +9,6 @@ public class Tank {
     public static int WIDTH = ResourceMgr.GoodTankD.getWidth();
     public static int HEIGHT = ResourceMgr.GoodTankD.getHeight();
 
-    Rectangle rect = new Rectangle();
-
     private Random random = new Random();
 
     private int x,y;
@@ -32,11 +30,6 @@ public class Tank {
         this.dir = dir;
         this.group = group;
         this.tf = tf;
-
-        rect.x = this.x;
-        rect.y = this.y;
-        rect.width = WIDTH;
-        rect.height = HEIGHT;
     }
 
     public void fire(){
@@ -88,31 +81,11 @@ public class Tank {
                 break;
         }
 
-        rect.x = this.x;
-        rect.y = this.y;
         if (this.group == Group.BAD && random.nextInt(100) > 95) this.fire();
 
         if (this.group == Group.BAD && random.nextInt(100) > 95) {
             randomDir();
         }
-
-        boundsCheck();
-    }
-
-    private void boundsCheck() {
-        if (this.x < 0) {
-            this.x = 2;
-        }
-        if (this.y < 28) {
-            this.y = 28;
-        }
-
-        if (this.x > TankFrame.GAME_WIDTH - Tank.WIDTH) {
-            this.x = TankFrame.GAME_WIDTH - Tank.WIDTH;
-        }
-        if (this.y > TankFrame.GAME_HEIGHT - Tank.HEIGHT) {
-            this.y = TankFrame.GAME_HEIGHT - Tank.HEIGHT;
-        }
     }
 
     private void randomDir() {