我正在将二十一点游戏作为我在 OOP 课程中的最后一个项目。我一辈子都想不通为什么我的牌不能正确渲染（仍然会考虑未显示的牌的值 - 这意味着如果我有二十一点并且我只能看到我的一张牌，我仍然会获得二十一点的荣誉）。这是我试图传达的截图（注意：每次总是至少缺少一张牌，并且庄家的面朝下牌也没有正确显示）：
这是与我的卡片渲染问题相关的代码段：
/**
* Paints the cards stacked top-down in addition to the rest of the
* components. The cards are arranged so the user can still see all of
* the cards' values.
*/
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (hand == null) return;
for (int i = 0; i < hand.length(); i++) {
drawCard(g, hand.get(i), 10, 76 + 33*i);
}
}
/**
* Paints a card image onto (x,y) of the container. A face down card will
* be drawn accordingly.
* @param g the graphics context
* @param card the card to be printed
* @param x the x-position of the printed card in this container
* @param y the y-position of the printed card in this container
*/
private void drawCard(Graphics g, Card card, int x, int y){
String face = "";
String suit = "";
String filepath = "";
if (!card.isFaceUp()) {
suit = "b1";
face = "fv";
}
else {
face = String.valueOf(card.getFace());
if (face == "11"){
face = "j";
}
if (face == "12"){
face = "q";
}
if (face == "13"){
face = "k";
}
switch (card.getSuit()) {
case Card.DIAMONDS: suit = "d"; break;
case Card.CLUBS: suit = "c"; break;
case Card.HEARTS: suit = "h"; break;
default: suit = "s"; break; //Spades
}
BufferedImage cardImg = null;
filepath = "C:/Users/Student/workspace/Blackjack GUI/src/images/" + suit + face + ".png";
try {
cardImg = ImageIO.read(new File(filepath));
} catch (IOException e) {
}
g.drawImage(cardImg,x,y,71,96,this);
}
卡片的值（“面”）和花色是从我的名为 Card 的类中的整数派生的。这是该课程的副本：
/**
* A class the represents the deck of 52 cards used in Blackjack.
* Cards can be one of 13 faces, one of four suits, and one of two colors.
* Methods will get the names, faces, values, suits, or colors of the cards and
* can flip the card face up or face down.
* @author Mike Mulhearn
*/
public class Card {
/**
* The value of an Ace
*/
public static final int ACE = 1;
/**
* The value of a Two
*/
public static final int TWO = 2;
/**
* The value of a Three
*/
public static final int THREE = 3;
/**
* The value of a Four
*/
public static final int FOUR = 4;
/**
* The value of a Five
*/
public static final int FIVE = 5;
/**
* The value of a Six
*/
public static final int SIX = 6;
/**
* The value of a Seven
*/
public static final int SEVEN = 7;
/**
* The value of an Eight
*/
public static final int EIGHT = 8;
/**
* The value of a Nine
*/
public static final int NINE = 9;
/**
* The value of a Ten
*/
public static final int TEN = 10;
/**
* The value of a Jack
*/
public static final int JACK = 11;
/**
* The value of a Queen
*/
public static final int QUEEN = 12;
/**
* The value of a King
*/
public static final int KING = 13;
/**
* The value of a Spade
*/
public static final int SPADES = 3;
/**
* The value of a Diamond
*/
public static final int DIAMONDS = 0;
/**
* The value of a Club
*/
public static final int HEARTS = 2;
/**
* The value of a Club
*/
public static final int CLUBS = 1;
private int suit; //Represents the suit of the card (0-Diamond,1-Club,2-Heart,3-Spade)
private int face; //Will contain a value from 0 to 12, from Ace to King
private boolean isFaceUp = true; //Tells whether the card is face up or face down
/**
* Create a card with suit cardSuit, face cardFace, and visibility faceUp
* @param cardSuit is the suit of the card
* @param cardFace is the face of the card
* @param faceUp is true when card is face up, false if face down
*/
public Card(int cardSuit, int cardFace, boolean faceUp){
suit = cardSuit;
face = cardFace;
isFaceUp = faceUp;
}
/**
* Create a card with suit cardSuit, face cardFace
* @param cardSuit is the suit of the Card
* @param cardFace is the face of the Card
*/
public Card(int cardSuit, int cardFace){
suit = cardSuit;
face = cardFace;
isFaceUp = true;
}
/**
* Gets the suit of the card
* @return integer value with the suit of the card
*/
public int getSuit(){
return suit;
}
/**
* Gets the color of the card
* @return Color of the card as a String
*/
public String getColor(){
if(suit == 0 || suit == 2)
return "Red";
else
return "Black";
}
/**
* Gets the face of the Card
* @return Face of the Card
*/
public int getFace(){
return face;
}
/**
* Gets the value of the Card
* Uses the face of the Card to calculate the value
* Ace is 1, 2-9 are themselves, 10 and higher are 10
* @return value of the card
*/
public int getValue(){
if(face >= TWO && face <= TEN)
return face;
else if(face > TEN)
return 10;
return -1;
}
/**
* Gets the highest possible value of the ace
* @return integer of the highest possible value of the ace
*/
public int getHighValue() {
int high = getValue();
if (high == -1) {
return 11;
} else {
return high;
}
}
/**
* Gets the lowest value of the ace
* @return integer of the lowest possible value of the ace
*/
public int getLowValue() {
int low = getValue();
if (low == -1) {
return 1;
} else {
return low;
}
}
/**
* Flips the card over
*/
public void flip(){
isFaceUp = !isFaceUp;
}
/**
* Determines whether the cards are face up
* @return boolean value representing whether the card is face up or down
*/
public boolean isFaceUp(){
return isFaceUp;
}
/**
* Gets the suit name
* @return String with the suit of the card
*/
public String getSuitName(){
switch(suit) {
case DIAMONDS: return "Diamonds";
case CLUBS: return "Clubs";
case HEARTS: return "Hearts";
case SPADES: return "Spades";
default: return "Error: No Suit Found";
}
}
/**
* Gets the face name
* @return String with the face of the card
*/
public String getFaceName() {
switch (face) {
case ACE: return "Ace";
case TWO: return "Two";
case THREE: return "Three";
case FOUR: return "Four";
case FIVE: return "Five";
case SIX: return "Six";
case SEVEN: return "Seven";
case EIGHT: return "Eight";
case NINE: return "Nine";
case TEN: return "Ten";
case JACK: return "Jack";
case QUEEN: return "Queen";
case KING: return "King";
default: return "Error: No Face Found";
}
}
}
最后是 GUI 类中 main 函数的副本：
/**
* Runs the Game
* @param args Main Method
*/
public static void main(String[] args) {
GUI b = new GUI();
Game game = b.new Game();
JOptionPane.showMessageDialog(game, "Welcome to Mike Mulhearn's House of Cards. " +
"Today we will be indulging ourselves in a game of Blackjack. " +
"Please take your seat.");
while (true) {
if (game.human.getMoney() < MIN_BET) {
JOptionPane.showMessageDialog(game, "You don't have enough money to play. YOU LOSE!");
System.exit(0);
}
System.out.println(game.deck.getCount());
game.askBets();
game.deal();
game.repaint();
game.setButtonState(true, true, true, false, true);
if (game.human.getCurrentBet() > game.human.getMoney())
game.playerChoices.disableDouble();
while (game.turnContinue) { game.repaint(); }
game.setButtonState(false, false, false, false, false);
game.doAITurns();
game.repaint();
game.doDealerTurn();
game.repaint();
game.doPayOuts();
game.reset();
}
}
如果我遗漏了任何代码，这里是我的程序的压缩副本：Blackjack GUI.zip！
如果有人能帮我解决这个问题，我将不胜感激！