BLACKJACK SOURCE CODE

BLACKJACK SOURCE CODE // author: anthony f. ortiz program: blackjack.java import java.applet.Applet; import java.awt.*; import java.math.*; public class blackjack extends Applet { private imagelabel [] back_of_card = new imagelabel [4]; private imagelabel [][] cards = new imagelabel [13][4]; private String [] type = {"2", "3", "4", "5", "6", "7", "8", "9", "t", "j", "q", "k", "a"}; private String [] suit = {"c", "d", "h", "s"}; private Button deal, hit, stay; private Label bet_label, win1, win2, counter1, counter2; private Label your_status, dealer_status, who_won; private TextField bet_textfield; private int [] user_type = new int [10]; private int [] user_suit = new int [10]; private int [] dealer_type = new int [10]; private int [] dealer_suit = new int [10]; private int [] totals = new int [2]; private int user_cards, dealer_cards; private int flag, bet, pay, counter; public void init () { load_images (); load_labels (); } public void start () { counter = 100; counter2.setText ("" + counter); counter2.invalidate (); counter2.validate (); erase_screen (); display_screen (); initialize_values (); } // load the screen images. public void load_images () { for (int i = 0; i < 4; i++) { back_of_card [i] = new imagelabel (getCodeBase (), "e.gif"); back_of_card [i].wait_for_image (true); } for (int i = 0; i < 13; i++) { for (int j = 0; j < 4; j++) { String card = new String (type [i] + suit [j] + ".gif"); cards [i][j] = new imagelabel (getCodeBase (), card); cards [i][j].wait_for_image (true); } } } // load the screen components (buttons, labels, etc). public void load_labels () { Color color = new Color (0, 128, 0); setBackground (color); your_status = new Label (); dealer_status = new Label (); who_won = new Label (); deal = new Button ("deal"); hit = new Button ("hit"); stay = new Button ("stay"); bet_label = new Label ("bet (1-5):"); bet_textfield = new TextField (); win1 = new Label ("you won: "); win2 = new Label (); counter1 = new Label ("total: "); counter2 = new Label (); } // display the initial screen. public void display_screen () { Font font = new Font ("Courier", Font.BOLD, 12); setFont (font); setLayout (null); draw_backgrounds (); dealer_status.reshape (5, 118, 250, 10); add (dealer_status); your_status.reshape (5, 318, 250, 10); add (your_status); who_won.reshape (5, 150, 250, 10); add (who_won); deal.reshape (5, 340, 75, 25); add (deal); hit.reshape (110, 340, 75, 25); add (hit); stay.reshape (215, 340, 75, 25); add (stay); bet_label.reshape (5, 382, 75,10); add (bet_label); bet_textfield.reshape (110, 377, 75, 25); add (bet_textfield); win1.reshape (215, 382, 75, 10); add (win1); win2.reshape (290, 382, 75, 10); add (win2); counter1.reshape (365, 382, 75, 10); add (counter1); counter2.reshape (440, 382, 75, 10); add (counter2); } // draw the backs of the playing cards. public void draw_backgrounds () { int count = 0; for (int j = 0; j < 2; j++) { for (int i = 0; i < 2; i++) { back_of_card [count].reshape (5 + (i * 105), 5 + (j * 200), 75, 100); add (back_of_card [count]); back_of_card [count].wait_for_image (true); count++; } } } // deal cards to the opponent of the dealer. public void deal_user () { int type, suit, same_card = 0; for (int i = 0; i < 2; i++) { user_cards++; do { type = (int) (Math.random () * (14 - 1)); suit = (int) (Math.random () * (5 - 1)); same_card = card_already_used (type, suit); } while (same_card == 1); user_type [i] = type; user_suit [i] = suit; remove (back_of_card [i + 2]); cards [type][suit].reshape (5 + (i * 105), 5 + 200, 75, 100); add (cards [type][suit]); cards [type][suit].wait_for_image (true); } } // deal cards to the dealer. public void deal_dealer () { int type, suit, same_card = 0; for (int i = 0; i < 1; i++) { dealer_cards++; do { type = (int) (Math.random () * (14 - 1)); suit = (int) (Math.random () * (5 - 1)); same_card = card_already_used (type, suit); } while (same_card == 1); dealer_type [i] = type; dealer_suit [i] = suit; remove (back_of_card [1]); cards [type][suit].reshape (5 + 105, 5, 75, 100); add (cards [type][suit]); cards [type][suit].wait_for_image (true); } } // hit the dealer's opponent. public void hit_user () { int type, suit, same_card = 0; for (int i = user_cards; i < user_cards + 1 ; i++) { do { type = (int) (Math.random () * (14 - 1)); suit = (int) (Math.random () * (5 - 1)); same_card = card_already_used (type, suit); } while (same_card == 1); user_type [i] = type; user_suit [i] = suit; cards [type][suit].reshape (5 + (i * 105), 5 + 200, 75, 100); add (cards [type][suit]); cards [type][suit].wait_for_image (true); } user_cards++; } // show dealer's other card. public void show_dealer_card () { int type, suit, same_card = 0; for (int i = 1; i < 2 ; i++) { dealer_cards++; do { type = (int) (Math.random () * (14 - 1)); suit = (int) (Math.random () * (5 - 1)); same_card = card_already_used (type, suit); } while (same_card == 1); dealer_type [i] = type; dealer_suit [i] = suit; remove (back_of_card [0]); cards [type][suit].reshape (5, 5, 75, 100); add (cards [type][suit]); cards [type][suit].wait_for_image (true); } } // hit the dealer. public void hit_dealer () { int type, suit, same_card = 0; for (int i = dealer_cards; i < dealer_cards + 1 ; i++) { do { type = (int) (Math.random () * (14 - 1)); suit = (int) (Math.random () * (5 - 1)); same_card = card_already_used (type, suit); } while (same_card == 1); dealer_type [i] = type; dealer_suit [i] = suit; cards [type][suit].reshape (5 + (i * 105), 5, 75, 100); add (cards [type][suit]); cards [type][suit].wait_for_image (true); } dealer_cards++; } // calculate the user's or dealer's hand. public void calculate_hand (int who, int number_cards, int [] hand) { int ace_count = 0, ace_count2 = 0; totals [who] = 0; for (int i = 0; i < number_cards; i++) { switch (hand [i]) { case 0: totals [who] = totals [who] + 2; break; case 1: totals [who] = totals [who] + 3; break; case 2: totals [who] = totals [who] + 4; break; case 3: totals [who] = totals [who] + 5; break; case 4: totals [who] = totals [who] + 6; break; case 5: totals [who] = totals [who] + 7; break; case 6: totals [who] = totals [who] + 8; break; case 7: totals [who] = totals [who] + 9; break; case 8: totals [who] = totals [who] + 10; break; case 9: totals [who] = totals [who] + 10; break; case 10: totals [who] = totals [who] + 10; break; case 11: totals [who] = totals [who] + 10; break; case 12: totals [who] = totals [who] + 11; ace_count++; break; } } ace_count2 = ace_count; for (int i = 0; i < ace_count2; i++) { if (ace_count > 0 && totals [who] > 21) { totals [who] = totals [who] - 10; ace_count = ace_count - 1; } } } // determine who won. public void determine_winner () { if (totals [0] > 21) { deal.enable (true); hit.enable (false); stay.enable (false); show_dealer_card (); calculate_hand (1, dealer_cards, dealer_type); dealer_status.setText ("dealer has " + totals [1] + "."); dealer_status.invalidate (); dealer_status.validate (); your_status.setText ("you have " + totals [0] + ". you busted."); your_status.invalidate (); your_status.validate (); who_won.setText ("dealer won"); who_won.invalidate (); who_won.validate (); pay = 0; counter = counter - bet; update_counter (); } else if (totals [1] > 21) { dealer_status.setText ("dealer has " + totals [1] + ". dealer busted."); dealer_status.invalidate (); dealer_status.validate (); who_won.setText ("you won."); who_won.invalidate (); who_won.validate (); pay = bet * 2; counter = counter + pay - bet; } else if (totals [1] >= totals [0]) { dealer_status.setText ("dealer has " + totals [1] + "."); dealer_status.invalidate (); dealer_status.validate (); who_won.setText ("dealer won."); who_won.invalidate (); who_won.validate (); pay = 0; counter = counter - bet; } else if (totals [0] > totals [1] && totals [1] >= 17) { dealer_status.setText ("dealer has " + totals [1] + "."); dealer_status.invalidate (); dealer_status.validate (); who_won.setText ("you won."); who_won.invalidate (); who_won.validate (); pay = bet * 2; counter = counter + pay - bet; } } // determine if this card is already being used. public int card_already_used (int type, int suit) { int same_card = 0; for (int i = 0; i < user_cards; i++) { if (user_type [i] == type && user_suit [i] == suit) { return (same_card = 1); } else { same_card = 0; } } for (int i = 0; i < dealer_cards; i++) { if (dealer_type [i] == type && dealer_suit [i] == suit) { return (same_card = 1); } else { same_card = 0; } } return same_card; } // initialize values. public void initialize_values () { bet = 1; flag = 0; user_cards = 0; dealer_cards = 0; totals [0] = 0; totals [1] = 0; for (int i = 0; i < 10; i++) { user_type [i] = -1; user_suit [i] = -1; dealer_type [i] = -1; dealer_suit [i] = -1; } deal.enable (true); hit.enable (false); stay.enable (false); your_status.setText (""); your_status.invalidate (); your_status.validate (); dealer_status.setText (""); dealer_status.invalidate (); dealer_status.validate (); who_won.setText (""); who_won.invalidate (); who_won.validate (); bet_textfield.enable (true); bet_textfield.setText ("" + bet); win2.setText (""); win2.invalidate (); win2.validate (); } // erase the images from the screen. public void erase_screen () { for (int i = 0; i < user_cards; i++) { remove (cards [user_type [i]][user_suit [i]]); } for (int i = 0; i < dealer_cards; i++) { remove (cards [dealer_type [i]][dealer_suit [i]]); } } // show the user's winning/losings and the new counter. public void update_counter () { win2.setText ("" + pay); win2.invalidate (); win2.validate (); counter2.setText ("" + counter); counter2.invalidate (); counter2.validate (); } // deal, hit, or stay. public boolean action (Event event, Object object) { if (event.target == deal && flag == 0) { flag = 1; deal.enable (false); hit.enable (true); stay.enable (true); bet_textfield.enable (false); deal_user (); deal_dealer (); calculate_hand (0, user_cards, user_type); return (true); } else if (event.target == deal && flag == 1) { erase_screen (); draw_backgrounds (); initialize_values (); return (true); } else if (event.target == hit) { hit_user (); calculate_hand (0, user_cards, user_type); determine_winner (); return (true); } else if (event.target == stay) { hit.enable (false); stay.enable (false); deal.enable (true); your_status.setText ("you have " + totals [0] + "."); your_status.invalidate (); your_status.validate (); show_dealer_card (); calculate_hand (1, dealer_cards, dealer_type); do { if (totals [1] < 17 && totals [1] < totals [0]) { hit_dealer (); calculate_hand (1, dealer_cards, dealer_type); } } while (totals [1] < 17 && totals [1] < totals [0]); determine_winner (); update_counter (); return (true); } else { return (false); } } // make a bet from 0 to 5 coins. public boolean keyUp (Event event, int key) { if (event.target == bet_textfield) { if (key > 53 || key < 49) { bet_textfield.setText ("1"); } else { bet = key - 48; bet_textfield.setText (bet + ""); } return (true); } else { return (false); } } } // use this class for the card images used in poker class. import java.awt.*; import java.net.*; // similar to label component. public class imagelabel extends Canvas { private Image image; private static String default_image_string = "http://java.sun.com/lib/images/" + "logo.java.color-transp.55x60.gif"; private String image_string = "default image string"; private boolean debug = false; private int border = 0; private Color border_color = null; private int width, height; private boolean explicit_size = false; private int explicit_width = 0, explicit_height = 0; private MediaTracker tracker; private static int last_tracker_id = 0; private int current_tracker_id; private boolean done_loading = false; private Container parent_container; // this creates a image label from the file specified by the default // string public imagelabel () { this (default_image_string); } // this create a image label from the specified file, which should be // in gif or jpeg format. public imagelabel (String image_url_string) { this (make_url (image_url_string)); } // similar to above constructor. public imagelabel (URL image_url) { this (load_image (image_url)); image_string = image_url.toExternalForm (); } // similar to above constructor. public imagelabel (URL image_directory, String file) { this (make_url (image_directory, file)); image_string = file; } // turn preexisting image into image label. public imagelabel (Image image) { this.image = image; tracker = new MediaTracker (this); current_tracker_id = last_tracker_id++; tracker.addImage (image, current_tracker_id); } // this starts loading the image. it won't return until image is // fully loaded. public void wait_for_image (boolean do_layout) { if (!done_loading) { debug ("resizing and waiting for " + image_string); try { tracker.waitForID (current_tracker_id); } catch (InterruptedException ie) { } catch (Exception e) { System.out.println ("error loading " + image_string + ": " + e.getMessage()); e.printStackTrace (); } if (tracker.isErrorID (0)) new Throwable ("error loading image " + image_string).printStackTrace(); done_loading = true; if (explicit_width != 0) width = explicit_width; else width = image.getWidth (this) + 2 * border; if (explicit_height != 0) height = explicit_height; else height = image.getHeight(this) + 2 * border; resize (width, height); debug (image_string + " is " + width + "x" + height + "."); if (((parent_container = getParent ()) != null) && do_layout) { setBackground (parent_container.getBackground ()); parent_container.layout (); } } } // this moves the image label so that its center is at (x, y). public void center_it (int x, int y) { debug ("centering" + image_string + " at (" + x + "," + y + ")"); move (x - width/2, y - height/2); } // determine if point (x, y) is inside the image label's // coordinate system. public synchronized boolean inside (int x, int y) { return ((x >= 0) && (x <= width) && (y >= 0) && (y <= height)); } // draw the image. public void paint (Graphics g) { if (!done_loading) wait_for_image (true); else { if (explicit_size) g.drawImage (image, border, border, width - 2 * border, height - 2 * border, this); else g.drawImage(image, border, border, this); draw_rect (g, 0, 0, width - 1, height - 1, border, border_color); } } // calculate the usual size allocated for the component. public Dimension preferred_size () { if (!done_loading) wait_for_image (false); return (super.preferredSize()); } // calculate the smallest size allocated for the component. public Dimension minimum_size () { if (!done_loading) wait_for_image (false); return (super.minimumSize ()); } // resize the image label. public void resize (int width, int height) { if (!done_loading) { explicit_size = true; if (width > 0) explicit_width = width; if (height > 0) explicit_height = height; } super.resize (width, height); } // similar to the above function. public void reshape (int x, int y, int width, int height) { if (!done_loading) { explicit_size = true; if (width > 0) explicit_width = width; if (height > 0) explicit_height = height; } super.reshape(x, y, width, height); } // draws the border of the image label. protected void draw_rect (Graphics g, int left, int top, int width, int height, int line_thickness, Color rectangle_color) { g.setColor(rectangle_color); for (int i = 0; i < line_thickness; i++) { g.drawRect (left, top, width, height); if (i < line_thickness - 1) { left = left + 1; top = top + 1; width = width - 2; height = height - 2; } } } // prints out a string if debug is true, otherwise it does nothing. protected void debug (String message) { if (debug) System.out.println (message); } // creates the url. private static URL make_url (String s) { URL u = null; try { u = new URL (s); } catch (MalformedURLException mue) { System.out.println ("bad url " + s + ": " + mue); mue.printStackTrace (); } return(u); } // similar to the above function. private static URL make_url (URL directory, String file) { URL u = null; try { u = new URL (directory, file); } catch (MalformedURLException mue) { System.out.println ("bad url " + directory.toExternalForm() + ", " + file + ": " + mue); mue.printStackTrace (); } return (u); } // load the image used by the image label. private static Image load_image (URL url) { return (Toolkit.getDefaultToolkit ().getImage (url)); } // retrieve the image used in the image label. public Image get_image () { return (image); } // specifies the size of the border around the image label. public int get_border () { return (border); } // retrieves the size of the border around the image label. public void set_border (int border) { this.border = border; } // specifies the color of the image label's border. public Color get_border_color () { return (border_color); } // retrieves the color of the image label's border. public void set_border_color (Color border_color) { this.border_color = border_color; } // retrieves the width the image label. public int get_width () { return (width); } // retrieves the height of the image label. public int get_height () { return (height); } // this determines whether the programmer called resize or reshape // on the image label before it was shown. protected boolean has_explicit_size () { return (explicit_size); } // retrieve the default image file. public static String get_default_image_string () { return (default_image_string); } // specify the default image file. public static void set_default_image_string (String file) { default_image_string = file; } // this will show the file name if your created the image label from a // a file. protected String get_image_string () { return (image_string); } // returns status of debugging flag. public boolean is_debugging () { return (debug); } // sets the status of the debugging flag. public void set_is_debugging (boolean debug) { this.debug = debug; } } // you can find the card images inside my directory. go to my directory // "http://members.aol.com/afo2871/. the first lines of source code will // tell you the names of each card. then, just bring each card up one // by one and copy them. for example, the king of clubs can be retrieved // with the url "http://members.aol.afo2871/kc.gif/. 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