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--- rhythm_game [2023/05/05 12:23] – created frchris
+++ rhythm_game [2023/05/08 16:39] (current) – frchris
@@ Line 2: / Line 2: @@
 [[https://mathorama.com/apcs/pmwiki.php?n=Main.TimerApplicaiton|Timer Application]]
+{{::screen_recording_2023-05-08_at_1.31.43_pm.gif?400|}}
+<code java Dot.java>
+import java.awt.Color;
+import java.awt.*;
+import javax.swing.Timer;
+import java.awt.event.*;
+public class Dot
+{
+    private int x, y, size ;
+    private Color color;
+     private Timer wait, duration;
+    boolean visable;
+    public Dot(int x, int y, int size, Color c, ActionListener app,
+                   int w, int dur)
+    {
+        this.x = x;
+        this.y = y;
+        this.size = size;
+        color = c;
+        visable = false;
+        wait = new Timer(w, app);
+        duration = new Timer(dur, app);
+        color = c;
+        //color = randomColor();
+    }
+    public void start(){
+        wait.start();
+    }
+    public Timer getWaitTimer(){
+        return wait;
+    }
+    public Timer getDurationTimer(){
+        return duration;
+    }
+    public boolean isVisable(){ return visable;}
+    public void setVisable(boolean b){  visable = b;}
+    public boolean contains (int a, int b)
+    {
+        if (!visable) return false;
+        double r = .5 * size;
+        double dx = (this.x + r) -a;
+        double dy = (this.y + r) -b;
+        //return (int)(Math.sqrt(dx*dx+dy*dy ));
+        return (dx*dx + dy*dy <= r*r);
+    }
+    /**
+     * randomInt
+     * @param min
+     * @param max
+     * @return a random integer from min to max (inclusive)
+     */
+    public int randomInt(int min, int max){
+        return min + (int)(Math.random()*(max-min+1));
+    }
+    /**
+     * randomColor
+     * @return random Color
+     */
+    public Color randomColor()
+    {
+        return new Color( randomInt(0,255), randomInt(0,255), randomInt(0,255));
+    }
+    /**
+     * draw
+     * @param The graphics object to draw itself
+     */
+    public void draw(Graphics g)
+    {
+        if (visable)
+        {
+            g.setColor(color);
+            g.fillOval(x, y, size, size);
+        }
+    }
+}
+</code>
+<code java DotTester.java>
+import java.awt.Color;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseListener;
+import java.util.ArrayList;
+import javax.swing.Timer;
+import java.awt.event.*;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+public class DotTester extends JPanel implements MouseListener, ActionListener
+{    public static int WIDTH=800;
+    public static int HEIGHT=600;
+    private Font titleFont, regularFont;
+    private int x,y;
+    private Dot[] dots;
+    private String message;
+    public DotTester()
+    {
+        //initialize variables here...
+        titleFont = new Font("Roman", Font.BOLD, 18);
+        regularFont = new Font("Helvetica", Font.PLAIN, 12);
+        x=0;
+        y=0;
+        message="Hit the red dot";
+        dots = new Dot[3];
+        dots[0] = new Dot(50,200, 50, Color.BLUE,  this,400, 350);
+        dots[1] = new Dot(110,200, 50, Color.BLUE, this, 10, 490);
+        dots[2] = new Dot(170,200, 50, Color.RED, this, 10, 150);
+        //wait = new Timer(1000, this);
+        //duration = new Timer(100, this);
+        //wait.addActionListener(this);
+        //duration.addActionListener(this);
+        dots[0].setVisable(true);
+        dots[0].start();
+    }
+    public static void main(String[] args) {
+        DotTester app= new DotTester();
+        JFrame window = new JFrame("Dot Tester");
+        window.setSize(WIDTH, HEIGHT);
+        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        window.getContentPane().add(app);
+        window.getContentPane().addMouseListener(app);
+        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("Dot Tester", 20, 20);
+        g.drawString("X = "+x+"   Y = "+y, 20, 100);
+        g.drawString(message, 500,200);
+        g.setColor(Color.BLACK);
+        g.setFont(regularFont);
+        g.drawString("Click with your mouse", 20, 40);
+        for (Dot d:dots)
+            d.draw(g);
+    }
+    // update is a workaround to cure Windows screen flicker problem
+    public void update(Graphics g){
+        paint(g);
+    }
+    /**
+     * These are the Methods needed to implement the MouseListener Interface
+     */
+    @Override
+    public void mouseClicked(MouseEvent e) {
+    }
+    @Override
+    public void mousePressed(MouseEvent e) {
+    }
+    @Override
+    public void mouseReleased(MouseEvent e) {
+        x=e.getX();
+        y=e.getY();
+        if (dots[2].contains(x,y) )
+           message = "hit!";
+        else
+           message = "miss";
+        repaint();
+    }
+    @Override
+    public void mouseEntered(MouseEvent e) {
+    }
+    @Override
+    public void mouseExited(MouseEvent e) {
+    }
+    public void actionPerformed(ActionEvent e) {
+        for(int i=0; i< dots.length; i++)
+        {
+            int next = (i+1)%3;
+            Timer wait = dots[i].getWaitTimer();
+            Timer duration = dots[i].getDurationTimer();
+        if (e.getSource()==duration){// time turn off
+            duration.stop();
+            dots[next].getWaitTimer().start();
+            dots[i].setVisable(false);
+        }
+        if (e.getSource()==wait)
+        {
+            wait.stop();
+            duration.start();
+            dots[i].setVisable(true);
+        }
+       }
+        repaint();
+    }
+}
+</code>