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--- resources_for_dotclicker [2022/05/09 15:39] – created frchris
+++ resources_for_dotclicker [2022/05/09 15:42] (current) – frchris
@@ Line 1: / Line 1: @@
 **Dot Clicker**
-Here is a dot that has a "is hit" method
+Here is a dot that has a "is hit" method.  If you want an image instead, take a look at this [[https://mathorama.com/apcs/pmwiki.php?n=Main.ImageMovementApplication|Image Movement Example]]
 <code>
 import java.awt.Graphics;
@@ Line 46: / Line 46: @@
 <code>
+import java.awt.Color;
+import java.awt.Font;
 import java.awt.Graphics;
-import java.awt.Color;
+import java.awt.event.MouseEvent;
-public class Dot
+import java.awt.event.MouseListener;
+import java.util.ArrayList;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.Timer;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+public class DotClicker extends JPanel implements MouseListener, ActionListener
 {
-    private int x,y,size;
+    public static int WIDTH=800;
-    /**
+    public static int HEIGHT=600;
-     * Constructor for objects of class Dot
+    private Font titleFont, regularFont;
-     */
+    private int x,y, hits, misses;
-    public Dot()
+    private Timer spawn, expire;
+    private ArrayList<Dot> dots;
+    public DotClicker()
     {
-        x = 50+(int)(500*Math.random());
+        titleFont = new Font("Roman", Font.BOLD, 18);
-        y = 50+(int)(300*Math.random());
+        regularFont = new Font("Helvetica", Font.PLAIN, 12);
-        size = 10 +(int)(20*Math.random());
+        spawn = new Timer(1000,this);
+        expire = new Timer(3000,this);
+        dots = new ArrayList<Dot>();
+        dots.add(new Dot());
+        spawn.start();
+        expire.start();
     }
-    public Dot(int x,int y,int size)
+    public static void main(String[] args) {
-    {
+        DotClicker app= new DotClicker();
-        this.x = x;
+        JFrame window = new JFrame("Mouse Listener Application");
-        this.y=y;
+        window.setSize(WIDTH, HEIGHT);
-        this.size = size;
+        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        window.getContentPane().add(app);
+        window.getContentPane().addMouseListener(app);
+        window.setVisible(true);
     }
-    public void draw(Graphics g){
+    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 Clicker Starter Code", 20, 20);
         g.setColor(Color.BLACK);
-        g.fillOval(x,y,size,size);
+        g.setFont(regularFont);
-    }
+        g.drawString("Hits: "+hits, 20, 40);
+        g.drawString("Misses: "+misses, 20, 60);
+        //Draw objects
+        for(Dot d:dots)
+             d.draw(g);
+    }
     /**
-     * returns true if (x0,y0) is inside the dot
+     * These are the Methods needed to implement the MouseListener Interface
      */
-    public boolean isHit(int x0, int y0)
+    public void mouseClicked(MouseEvent e) {}
-    {
+    public void mousePressed(MouseEvent e) {}
-        double x2 = x0 - (x+size/2.0);
+    public void mouseReleased(MouseEvent e) {
-        double y2 = y0 - (y+size/2.0);
+        x=e.getX();
-        return x2*x2 + y2*y2 - size*size <0;// pythaorean theorem
+        y=e.getY();
+        for(int i=dots.size()-1; i >= 0; i--)
+        {
+            if (dots.get(i).isHit(x,y))
+            {
+                hits++;
+                dots.remove(i);
+                repaint();
+            }
+        }
+        repaint();
     }
+    public void mouseEntered(MouseEvent e) {}
+    public void mouseExited(MouseEvent e) { }
+    public void actionPerformed(ActionEvent e) {
+	     if (e.getSource()==spawn){
+	    	 dots.add( new Dot() );
+	     }else if (dots.size()>0){// remove oldest
+	         dots.remove(0);
+	         misses++;
+	     }
+	     repaint();
+	}
 }
 </code>