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CS 120 Day 2

CS 120 Day 2. More Introduction Computer Science Software Engineering Integrated development environments (IDE) BlueJ Continue the discussion of the MemoryGame program. Computer Science. Processes Algorithms Control Complexity Abstraction. Software Engineering.

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CS 120 Day 2

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  1. CS 120 Day 2 • More Introduction • Computer Science • Software Engineering • Integrated development environments (IDE) • BlueJ • Continue the discussion of the MemoryGame program

  2. Computer Science • Processes • Algorithms • Control Complexity • Abstraction

  3. Software Engineering • Apply Engineering Principles to the development of software. • Definition given by the IEEE • The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software; that is, the application of engineering to software

  4. Software Engineering • Analysis • Design • Implementation • Testing • Maintenance

  5. Memory Game • Three classes • MemoryGame • MemoryGameWindow • ColorRectangle

  6. MemoryGame import javax.swing.*; import javax.swing.event.*; import java.awt.*; import java.awt.event.*; import java.util.Random; //Controller for the memory game public class MemoryGame implements ActionListener { MemoryGameWindow gameWindow; Random rNum; ColorRectangle items[]; int playBackItem; int toggleCount; Timer timer; int numItems; int nextGuess;

  7. MemoryGame public MemoryGame() { gameWindow = new MemoryGameWindow(10, 10, this); rNum = new Random(); timer = new Timer(1000, this); timer.setCoalesce(false); } private void generateItems() { int i = 0; int next; items = new ColorRectangle[numItems]; while (i < numItems) { next = rNum.nextInt(3); items[i] = gameWindow.getRectangle(next); i = i + 1; } }

  8. MemoryGame public void startGame(int n) { numItems = n; generateItems(); playBackItem = 0; toggleCount = 0; timer.start(); } public void actionPerformed(ActionEvent e) { if (playBackItem == numItems-1 && toggleCount == 1) { timer.stop(); nextGuess = 0; gameWindow.showResponse("YOUR TURN"); } items[playBackItem].toggleColor(); playBackItem = playBackItem + toggleCount; toggleCount = (toggleCount + 1) % 2; }

  9. MemoryGame public void nextMove(ColorRectangle r) { if (items[nextGuess] == r) { nextGuess = nextGuess + 1; if (nextGuess == numItems) { gameWindow.showResponse("YOU WIN"); } } else { gameWindow.showResponse("ERROR IN MOVE "+ (nextGuess +1)); } } public static void main(String args[]) { new MemoryGame(); } }

  10. MemoryGameWindow import javax.swing.*; import javax.swing.event.*; import java.awt.*; import java.awt.event.*; //Implements the user interface for the memory game public class MemoryGameWindow extends JFrame implements ChangeListener, ActionListener, MouseListener { MemoryGame control; ColorRectangle rects[]; JButton start; JSlider numItemsSlider; int numItems; JLabel label;

  11. MemoryGameWindow public MemoryGameWindow(int x, int y, MemoryGame c) { setBounds(x, y, 400, 600); setTitle("Memory Game"); getContentPane().setLayout(null); setVisible(true); control = c; rects = new ColorRectangle[3]; rects[0] = new ColorRectangle(30, 20, 100, 75, Color.red, Color.black); rects[0].addMouseListener(this); add(rects[0]); rects[1] = new ColorRectangle(150, 20, 100, 75, Color.yellow, Color.black); rects[1].addMouseListener(this); add(rects[1]); rects[2] = new ColorRectangle(270, 20, 100, 75, Color.blue, Color.black); rects[2].addMouseListener(this); add(rects[2]);

  12. MemoryGameWindow numItems = 5; numItemsSlider = new JSlider(JSlider.HORIZONTAL, 2, 22, numItems); numItemsSlider.setBounds(20, 140, 360, 40); numItemsSlider.setMajorTickSpacing(4); numItemsSlider.setMinorTickSpacing(1); numItemsSlider.setPaintTicks(true); numItemsSlider.setPaintLabels(true); numItemsSlider.addChangeListener(this); add(numItemsSlider); start = new JButton("Start"); start.setBounds(150, 240, 100, 40); start.addActionListener(this); add(start); repaint(); }

  13. MemoryGameWindow public ColorRectangle getRectangle(int i) { //PRE: i >= 0 AND i <= 2 return rects[i]; } public void clearResponse() { if (label != null) { remove(label); repaint(); } } public void showResponse(String s) { clearResponse(); label = new JLabel(s, SwingConstants.CENTER); label.setBounds(125, 300, 150, 40); add(label); repaint(); }

  14. MemoryGameWindow public void stateChanged(ChangeEvent e) { JSlider s = (JSlider) e.getSource(); numItems = s.getValue(); } //This method is called when the start button is clicker public void actionPerformed(ActionEvent e) { clearResponse(); control.startGame(numItems); } //This method is called when one of the rectangles is clicked public void mouseClicked(MouseEvent e) { control.nextMove((ColorRectangle) e.getSource()); } }

  15. ColorRectangle import javax.swing.*; import java.awt.*; import java.awt.event.*; //Implements a ColorRectangle that responds to mouse clicked public class ColorRectangle extends JComponent { Color current; Color next; public ColorRectangle(int x, int y, int w, int h, Color c1, Color c2) { super(); setBounds(x, y, w, h); current = c1; next = c2; setBackground(current); }

  16. ColorRectangle public void paint(Graphics g) { g.setColor( getBackground() ); g.fillRect(0, 0, getWidth()-1, getHeight()-1); paintChildren(g); } public void toggleColor() { Color temp = current; current = next; next = temp; setBackground(current); repaint(); } }

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