如何在这个蛇形游戏中添加一个图标以及我在哪里放置它，以及如何在这么多点之后提高游戏速度？下面的代码是我认为这两段代码应该出现的类。
import java.awt.BorderLayout;
import java.awt.Point;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.IOException;
import java.util.LinkedList;
import java.util.Random;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
public class SnakeGame extends JFrame {
private static final long FRAME_TIME = 1000L / 50L;
private static final int MIN_SNAKE_LENGTH = 5;
private static final int MAX_DIRECTIONS = 3;
private BoardPanel board;
private SidePanel side;
private Random random;
private Clock logicTimer;
private boolean isNewGame;
private boolean isGameOver;
private boolean isPaused;
private LinkedList<Point> snake;
private LinkedList<Direction> directions;
private int score;
private int foodsEaten;
private int nextFoodScore;
private SnakeGame() {
super("Snake");
setLayout(new BorderLayout());
setDefaultCloseOperation(EXIT_ON_CLOSE);
setResizable(false);
this.board = new BoardPanel(this);
this.side = new SidePanel(this);
add(board, BorderLayout.CENTER);
add(side, BorderLayout.EAST);
addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
switch(e.getKeyCode()) {
case KeyEvent.VK_W:
case KeyEvent.VK_UP:
if(!isPaused && !isGameOver) {
if(directions.size() < MAX_DIRECTIONS) {
Direction last = directions.peekLast();
if(last != Direction.South && last != Direction.North) {
directions.addLast(Direction.North);
}
}
}
break;
case KeyEvent.VK_S:
case KeyEvent.VK_DOWN:
if(!isPaused && !isGameOver) {
if(directions.size() < MAX_DIRECTIONS) {
Direction last = directions.peekLast();
if(last != Direction.North && last != Direction.South) {
directions.addLast(Direction.South);
}
}
}
break;
case KeyEvent.VK_A:
case KeyEvent.VK_LEFT:
if(!isPaused && !isGameOver) {
if(directions.size() < MAX_DIRECTIONS) {
Direction last = directions.peekLast();
if(last != Direction.East && last != Direction.West) {
directions.addLast(Direction.West);
}
}
}
break;
case KeyEvent.VK_D:
case KeyEvent.VK_RIGHT:
if(!isPaused && !isGameOver) {
if(directions.size() < MAX_DIRECTIONS) {
Direction last = directions.peekLast();
if(last != Direction.West && last != Direction.East) {
directions.addLast(Direction.East);
}
}
}
break;
case KeyEvent.VK_P:
if(!isGameOver) {
isPaused = !isPaused;
logicTimer.setPaused(isPaused);
}
break;
case KeyEvent.VK_ENTER:
if(isNewGame || isGameOver) {
resetGame();
}
break;
}
}
});
pack();
setLocationRelativeTo(null);
setVisible(true);
}
private void startGame() {
this.random = new Random();
this.snake = new LinkedList<>();
this.directions = new LinkedList<>();
this.logicTimer = new Clock(10.0f);
//////////////////////////////////////////////////////////////////////////////////////////////////
this.isNewGame = true;
logicTimer.setPaused(true);
while(true) {
long start = System.nanoTime();
logicTimer.update();
if(logicTimer.hasElapsedCycle()) {
updateGame();
}
board.repaint();
side.repaint();
long delta = (System.nanoTime() - start) / 1000000L;
if(delta < FRAME_TIME) {
try {
Thread.sleep(FRAME_TIME - delta);
} catch(Exception e) {
e.printStackTrace();
}
}
}
}
private void updateGame() {
TileType collision = updateSnake();
if(collision == TileType.Food) {
foodsEaten++;
score += nextFoodScore;
spawnFood();
} else if(collision == TileType.SnakeBody) {
isGameOver = true;
logicTimer.setPaused(true);
} else if(nextFoodScore > 10) {
}
}
private TileType updateSnake() {
Direction direction = directions.peekFirst();
Point head = new Point(snake.peekFirst());
switch(direction) {
case North:
head.y--;
break;
case South:
head.y++;
break;
case West:
head.x--;
break;
case East:
head.x++;
break;
}
if(head.x < 0 || head.x >= BoardPanel.COL_COUNT || head.y < 0 || head.y >= BoardPanel.ROW_COUNT) {
return TileType.SnakeBody;
}
TileType old = board.getTile(head.x, head.y);
if(old != TileType.Food && snake.size() > MIN_SNAKE_LENGTH) {
Point tail = snake.removeLast();
board.setTile(tail, null);
old = board.getTile(head.x, head.y);
}
if(old != TileType.SnakeBody) {
board.setTile(snake.peekFirst(), TileType.SnakeBody);
snake.push(head);
board.setTile(head, TileType.SnakeHead);
if(directions.size() > 1) {
directions.poll();
}
}
return old;
}
private void resetGame() {
this.score = 0;
this.foodsEaten = 0;
this.isNewGame = false;
this.isGameOver = false;
Point head = new Point(BoardPanel.COL_COUNT / 2, BoardPanel.ROW_COUNT / 2);
snake.clear();
snake.add(head);
board.clearBoard();
board.setTile(head, TileType.SnakeHead);
directions.clear();
directions.add(Direction.North);
logicTimer.reset();
spawnFood();
}
public boolean isNewGame() {
return isNewGame;
}
public boolean isGameOver() {
return isGameOver;
}
public boolean isPaused() {
return isPaused;
}
private void spawnFood() {
this.nextFoodScore = 10;
int index = random.nextInt(BoardPanel.COL_COUNT * BoardPanel.ROW_COUNT - snake.size());
int freeFound = -1;
for(int x = 0; x < BoardPanel.COL_COUNT; x++) {
for(int y = 0; y < BoardPanel.ROW_COUNT; y++) {
TileType type = board.getTile(x, y);
if(type == null || type == TileType.Food) {
if(++freeFound == index) {
board.setTile(x, y, TileType.Food);
break;
}
}
}
}
}
public int getScore() {
return score;
}
public int getFoodsEaten() {
return foodsEaten;
}
public int getNextFoodScore() {
return nextFoodScore;
}
public Direction getDirection() {
return directions.peek();
}
public static void main(String[] args) {
SnakeGame snake = new SnakeGame();
snake.startGame();
}
}
答案 0 :(得分：0)
像这样创建一个新的ImageIcon对象：
ImageIcon img = new ImageIcon(pathToFileOnDisk);
然后使用setIconImage（）将其设置为JFrame：
myFrame.setIconImage(img.getImage());
同时结帐setIconImages（），取而代之的是。
这不是我的答案!!!!