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--- stacker [2023/05/11 13:50] – created frchris
+++ stacker [2023/05/19 10:13] (current) – frchris
@@ Line 1: / Line 1: @@
 ====== Stacker ======
+[[https://mathorama.com/apcs/pmwiki.php?n=Main.TimerApplicaiton|Timer App]]
-Box
+[[https://mathorama.com/apcs2/StakerGameJustin23.jar|StakerGameJustin23.jar]]
-BoxTester
+<code java Box.java>
+import java.awt.*;
+/**
+ * Write a description of class Box here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class Box
+{
+    // instance variables - replace the example below with your own
+    private int x,y,width, direction, leftLimit, rightLimit ;
+    private boolean falling;
+    /**
+     * Constructor for objects of class Box
+     */
+    public Box(int x, int y, int width)
+    {
+        // initialise instance variables
+        this.x =x;
+        this.y =y;
+        direction = 1;
+        this.width = width;
+        leftLimit = x;
+        rightLimit =  x+6*width;
+        falling=false;
+    }
+    public void draw(Graphics g)
+    {
+        // put your code here
+        g.setColor(Color.BLUE.darker());
+        g.fillRect(x,y, width,width);
+    }
+    public void move()
+    {
+        if(direction ==0)
+            return;
+        int next = 20*direction;
+        if ( x+next > rightLimit  )
+        {
+            direction = -1;
+        }
+        if ( x+next < leftLimit  )
+        {
+            direction = 1;
+        }
+        if (falling){
+            y += next;
+        }else{
+            x += next;
+        }
+    }
+    public void stop(){
+        direction =0;
+        falling=true;
+    }
+}
+</code>
+<code java BoxTester.java>
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.KeyEvent;
+import java.awt.event.KeyListener;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.Timer;
+public class BoxTester extends JPanel implements KeyListener, ActionListener
+{
+    public static int WIDTH=800;
+    public static int HEIGHT=800;
+    private Font titleFont, regularFont;
+    private int x;
+    private Timer timer1, timer2;
+        private Box b;
+    public BoxTester()
+    {
+        //initialize variables here...
+        titleFont = new Font("Roman", Font.BOLD, 18);
+        regularFont = new Font("Helvetica", Font.PLAIN, 12);
+        x=0;
+        b = new Box(75,175, 50);
+        timer1 = new Timer(20, this); //1000=1 seconds
+        //timer2 = new Timer(2000, this); //1000=1 seconds
+        timer1.start();
+    }
+    public static void main(String[] args) {
+        BoxTester app= new BoxTester();
+        JFrame window = new JFrame("Timer Example");
+        window.setSize(WIDTH, HEIGHT);
+        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        window.getContentPane().add(app);
+        window.addKeyListener(app);
+        //window.pack();
+        window.setVisible(true);
+    }
+    public void paintComponent(Graphics g){
+        super.paintComponent(g);
+        g.setColor(Color.WHITE);
+        g.fillRect(0, 0, getWidth(),getHeight());
+        g.setColor(Color.BLUE);
+        g.setFont(titleFont);
+        g.drawString("Timer Example", 20, 20);
+        g.setColor(Color.BLACK);
+        g.setFont(regularFont);
+        g.drawString("x = "+x, 20, 40);
+        b.draw(g);
+    }
+    // update is a workaround to cure Windows screen flicker problem
+    public void update(Graphics g){
+        paint(g);
+    }
+    // These 3 methods need to be declares to implement the KeyListener Interface
+    @Override
+    public void keyTyped(KeyEvent e) {}
+    @Override
+    public void keyPressed(KeyEvent e) {}
+    @Override
+    public void keyReleased(KeyEvent e) {
+       b.stop();
+       }
+    @Override
+    public void actionPerformed(ActionEvent e) {
+         if (e.getSource()==timer1){
+             b.move();
+             x++;
+         }
+         repaint();
+    }
+}
+</code>