init tank project3

src/event_/BallMove.java

@@ -6,7 +6,7 @@ import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
 
 /**
- * 小球移动
+ * 小球移动事件
  */
 public class BallMove  extends JFrame{
     public static void main(String[] args) {
@@ -22,6 +22,8 @@ public class BallMove  extends JFrame{
     }
 }
 class MyPanel extends JPanel implements KeyListener {
+    int x = 10;
+    int y = 10;
     @Override
     public void keyTyped(KeyEvent e) {
         
@@ -30,8 +32,16 @@ class MyPanel extends JPanel implements KeyListener {
     @Override
     public void keyPressed(KeyEvent e) {
         if(e.getKeyCode() == KeyEvent.VK_DOWN) {
-            System.out.println("按下了向下的按键");
+            // 键盘向下 y+1
+            y++;
+        } else if(e.getKeyCode() == KeyEvent.VK_UP) {
+            y--;
+        } else if(e.getKeyCode() == KeyEvent.VK_LEFT) {
+            x--;
+        } else if(e.getKeyCode() == KeyEvent.VK_RIGHT) {
+            x++;
         }
+        super.repaint();
     }
 
     @Override
@@ -42,6 +52,6 @@ class MyPanel extends JPanel implements KeyListener {
     @Override
     public void paint(Graphics g) {
         super.paint(g);
-        g.fillOval(10,10,20,20);
+        g.fillOval(x,y,20,20);
     }
 }

src/tankGame01/MyPanel.java

@@ -2,9 +2,45 @@ package tankGame01;
 
 import javax.swing.*;
 import java.awt.*;
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
 
-public class MyPanel extends JPanel {
+public class MyPanel extends JPanel implements KeyListener {
+    Tank tank1;
+    Tank tank2;
+    Tank tank3;
+    Tank tank4;
     public MyPanel() {
+        tank1 = new Tank(100, 100);
+        tank2 = new Tank(200, 100);
+        tank3 = new Tank(300, 100);
+        tank4 = new Tank(400, 100);
+    }
+
+    @Override
+    public void keyTyped(KeyEvent e) {
+
+    }
+
+    @Override
+    public void keyPressed(KeyEvent e) {
+        int x = tank1.getX();
+        int y = tank1.getY();
+        if(e.getKeyCode() == KeyEvent.VK_DOWN) {
+            // 键盘向下 y+1
+            tank1.setY(y++);
+        } else if(e.getKeyCode() == KeyEvent.VK_UP) {
+            tank1.setY(y--);
+        } else if(e.getKeyCode() == KeyEvent.VK_LEFT) {
+            tank1.setX(x--);
+        } else if(e.getKeyCode() == KeyEvent.VK_RIGHT) {
+            tank1.setX(x++);
+        }
+        this.repaint();
+    }
+
+    @Override
+    public void keyReleased(KeyEvent e) {
 
     }
 
@@ -13,9 +49,9 @@ public class MyPanel extends JPanel {
         super.paint(g);
         // 填充矩形
         g.fillRect(0,0,1000,750);
-        Tank tank = new Tank(100, 100);
-        tank.initTank(g,1,1);
-        Tank tank2 = new Tank(200, 100);
-        tank2.initTank(g,1,2);
+        tank1.initTank(g,1,1);
+        tank2.initTank(g,2,1);
+        tank3.initTank(g,3,1);
+        tank4.initTank(g,4,2);
     }
 }

src/tankGame01/Tank.java

@@ -12,6 +12,22 @@ public class Tank {
         this.y = y;
     }
 
+    public Integer getX() {
+        return x;
+    }
+
+    public Integer getY() {
+        return y;
+    }
+
+    public void setX(Integer x) {
+        this.x = x;
+    }
+
+    public void setY(Integer y) {
+        this.y = y;
+    }
+
     /**
      * 初始化坦克
      * @param g 画笔
@@ -31,6 +47,30 @@ public class Tank {
                 g.fillOval(x+10,y+20,20,20);  // 画坦克的盖子
                 g.drawLine(x+20,y+30,x+20,y);// 画机关枪（中间的线）
                 break;
+            // 向下
+            case 2:
+                g.fill3DRect(x,y,10,60,false);// 坦克左侧履带
+                g.fill3DRect(x+30,y,10,60,false);// 坦克右侧履带
+                g.fill3DRect(x+10,y+10,20,40,false); // 中间控制台
+                g.fillOval(x+10,y+20,20,20);  // 画坦克的盖子
+                g.drawLine(x+20,y+30,x+20,y+60);// 画机关枪（中间的线）
+                break;
+            // 向左
+            case 3:
+                g.fill3DRect(x,y,60,10,false);// 坦克上履带履带
+                g.fill3DRect(x,y+30,60,10,false);// 坦克下侧履带
+                g.fill3DRect(x+10,y+10,40,20,false); // 中间控制台
+                g.fillOval(x+20,y+10,20,20);  // 画坦克的盖子
+                g.drawLine(x+30,y+20,x,y+20);// 画机关枪（中间的线）
+                break;
+            // 向右
+            case 4:
+                g.fill3DRect(x,y,60,10,false);// 坦克上履带履带
+                g.fill3DRect(x,y+30,60,10,false);// 坦克下侧履带
+                g.fill3DRect(x+10,y+10,40,20,false); // 中间控制台
+                g.fillOval(x+20,y+10,20,20);  // 画坦克的盖子
+                g.drawLine(x+30,y+20,x+60,y+20);// 画机关枪（中间的线）
+                break;
         }
 
     }

src/tankGame01/TankGame01.java

@@ -11,6 +11,7 @@ public class TankGame01 extends JFrame {
         MyPanel myPanel = new MyPanel();
         this.add(myPanel);
         this.setSize(1000,750);
+        this.addKeyListener(myPanel);
         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         this.setVisible(true);
 //        this.getDefaultCloseOperation()