add cellpanel comments

src/cancergrowth/CellPanel.java

@@ -5,7 +5,7 @@ package cancergrowth;
  *   Created: Oct 02, 2017
  *    Author: 
  */
-import java.util.*;
+import java.util.*; // Import libraries we need 
 import java.awt.Color;
 import java.awt.Graphics;
 import java.awt.event.ActionEvent;
@@ -15,13 +15,12 @@ import javax.swing.event.ChangeEvent;
 import javax.swing.event.ChangeListener;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
-
 import javazoom.jl.decoder.JavaLayerException;
 import javazoom.jl.player.Player;
 
 public class CellPanel extends javax.swing.JPanel implements ActionListener, ChangeListener
 {
-  private Timer swingTimer;
+  private Timer swingTimer; // Declare and instantiate variables
   private int delay;
   private boolean growing = false;
   private int count = 0;
@@ -30,7 +29,8 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
   private int cycle;
   private boolean cycledir = true;
   Player player;
-  ArrayList<Cell> cells = new ArrayList<Cell>(100000000);
+  
+  ArrayList<Cell> cells = new ArrayList<Cell>(100000000); // Limit us at 10,000,000 cells
   
   public CellPanel() 
   {
@@ -41,16 +41,16 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
     //Cell t1 = new Cell(300, 100, Color.RED);
     //choice1.addItem(t1);
     //cells.add(t1);
-    Cell t2 = new Cell(475, 475);
+    Cell t2 = new Cell(475, 475); // Create the initial cell (would be inserted into blood stream)
     //choice1.addItem(t2);
-    cells.add(t2);
+    cells.add(t2); // add our cell to the ArrayList of cells
     //choice2.addItem(t2);
     
     //choice1.setRenderer(new ComboBoxRenderer());
     //choice2.setRenderer(new ComboBoxRenderer());
     speed.setValue(250);
     delay = speed.getValue();
-    swingTimer = new Timer(delay, this);
+    swingTimer = new Timer(delay, this); // Use a timer to time the simulation
     //swingTimer.start();
     pacmanx = 1050;
     pacmany = -20;
@@ -59,7 +59,7 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
 
   @Override
   public void actionPerformed(ActionEvent e)
-  {
+  { // Runs whenever the timer runs out (and starts over)
     if (swingTimer.isRunning())
       {     
         speed.setEnabled(true);
@@ -72,21 +72,17 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
         swingTimer.start();
       }
     
-    //canvas = new BufferedImage(1000, 1000, BufferedImage.TYPE_INT_ARGB);
-    //g2 = canvas.getGraphics();
     for (int k = 0; k < cells.size(); k++)
     {
       Cell t = cells.get(k);
-      Cell rec = t.performTime(!kill);
+      Cell rec = t.performTime(!kill); // Perform simulation for every cell using a loop
       if (t != rec) {
-        cells.add(rec);
+        cells.add(rec); // If performing the simulation results in a new daughter cell, add it to the list
       }
-      //g2.drawImage(t.getImage(), t.getX(), t.getY(), this);
     }
     //growing = true;
-    if(!kill) count ++;
+    if(!kill) count ++; // Count how many hours have passed
-    //System.out.println("ACTION PERFORMED");
+    super.repaint(); // Redraw the screen so we can see the progress
-    super.repaint();
     
   }
   @Override
@@ -99,47 +95,44 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
   public void paintComponent(Graphics g)
   {
     super.paintComponent(g);
-    //g.setColor(Color.BLACK);
     
     
     int x = cells.size() - 1;
-    //g.drawImage(canvas, 0, 0, this);
+    for (int k = x; k >= 0; k--) // Use a loop to draw each cell
-    for (int k = x; k >= 0; k--)
     { 
       Cell t = cells.get(k);
       /*if(k > cells.size() / 4) {
         //g.setColor(t.getColor());
         g.fillOval(t.getX(), t.getY(), 50, 50);
       } else*/
-      //if (cells.size() > 10000000) {
+      //if (cells.size() > 10000000) { // we can simulate until 10000000 first to see what happens isntead of waiting
       if(kill && (Math.abs(pacmanx + 40 - t.getX()) < 50) && (Math.abs(pacmany + 25 - t.getY()) < 75)) {
-        cells.remove(t);
+        cells.remove(t); // If pacman is here, have him eat the cell
       }
-      else g.drawImage(t.getImage(), t.getX(), t.getY(), this);
+      else g.drawImage(t.getImage(), t.getX(), t.getY(), this); // otherwise, draw the cell
         
         //swingTimer.stop();
       //}
     }
-    if(kill) {
+    if(kill) { // draw pacman if he needs to be drawn
-      //swingTimer.setDelay(100);
       g.setColor(Color.YELLOW);
       g.fillArc(pacmanx, pacmany, 100, 100, 220 - cycle * 2, 280 + cycle * 4); 
       if (pacmanx > -100) {
-        pacmanx -= 10;
+        pacmanx -= 10; // move pacman
       } else {
         pacmanx = 1050;
         pacmany += 100;
       }
       if (cycledir) cycle ++;
-      else cycle --;
+      else cycle --; // Open and close his mouth
       if (cycle == 21) cycledir = false;
       if (cycle == 0) cycledir = true;
     }
     if(pacmany > 1050) {
       while (!cells.isEmpty()) {
-        cells.remove(0);
+        cells.remove(0); // make sure we got rid of every cell with pacman
       }
-      kill = false;
+      kill = false; // turn off pacman
     }
     jLabel1.setText("Delay: " + delay + "ms. Hours since start: " + count + ". Cell Count: " + cells.size());
     System.out.println("Cell Count: " + cells.size());
@@ -151,7 +144,7 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
   /** This method is called from within the constructor to initialize the form.
     * 
     * WARNING: Do NOT modify this code by hand. The content of this method is
-    * always regenerated by the Form Editor.
+    * always regenerated by the Form Editor. Ignore this part! this just creates the buttons and slider
     */
   @SuppressWarnings("unchecked")
   // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
@@ -230,23 +223,20 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
 
   private void speedMouseReleased(java.awt.event.MouseEvent evt)//GEN-FIRST:event_speedMouseReleased
   {//GEN-HEADEREND:event_speedMouseReleased
-    // TODO add your handling code here:
+    delay = speed.getValue(); // if the slider bar is moved, update the timing
-    delay = speed.getValue();
     //swingTimer.setDelay(1000);
     super.repaint();
   }//GEN-LAST:event_speedMouseReleased
 
   private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_jButton1ActionPerformed
   {//GEN-HEADEREND:event_jButton1ActionPerformed
-    // TODO add your handling code here:
+    swingTimer.setDelay(delay); // When we press start, start the simulation
-    swingTimer.setDelay(delay);
     swingTimer.start();
   }//GEN-LAST:event_jButton1ActionPerformed
 
   private void jButton2ActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_jButton2ActionPerformed
   {//GEN-HEADEREND:event_jButton2ActionPerformed
-    // TODO add your handling code here:
+    if(kill) { // if we press the kill button, then begin the killing
-    if(kill) { 
       kill = false;
       swingTimer.setDelay(delay);
     }
@@ -256,13 +246,11 @@ public class CellPanel extends javax.swing.JPanel implements ActionListener, Cha
       swingTimer.setDelay(10);
       try {
 			FileInputStream fileInputStream = new FileInputStream("lib/pacman.mp3");
-			Player player = new Player(fileInputStream);
+			Player player = new Player(fileInputStream); // play pacman sound effect
       player.play();
 		} catch (FileNotFoundException e) {
-			// TODO Auto-generated catch block
+			e.printStackTrace(); // catch any errors with the mp3
-			e.printStackTrace();
 		} catch (JavaLayerException e) {
-			// TODO Auto-generated catch block
 			e.printStackTrace();
 		}	
     }