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import java.awt.*; import java.util.LinkedList; import java.util.Scanner; /** * @author aachen0 * @date 2018/3/27 13:56 * IDE:IntelliJ IDEA */ public class SnakeGame { static final int WIDTH = 40, HEIGHT = 10; static char[][] map = new char[HEIGHT][WIDTH]; public static void main(String[] args) { SnakeGame snakeGame = new SnakeGame(); snakeGame.initBackground();//初始化背景，放只虫子 SnakeLine snakeLine = new SnakeLine(); snakeLine.initSnake();//初始化一条蛇 snakeGame.putSnakeInMap(snakeLine); snakeGame.show();//显示一下 //键盘移动蛇进行游戏 Scanner scanner = new Scanner(System.in); int move; while (true) { System.out.println("输入AWSD控制蛇的移动，Q退出游戏"); String choice = scanner.next(); switch (choice) { case "a": case "A": move = 2; break; case "s": case "S": move = 1; break; case "w": case "W": move = 3; break; case "d": case "D": move = 0; break; case "q": case "Q": int points=snakeLine.snakePoints.size(); snakeGame.putGameOverInMap(points); default: System.out.println("输入有误，请重试"); continue; } if (snakeLine.move(move) == -1) { snakeGame.putGameOverInMap(snakeLine.snakePoints.size()); snakeGame.show(); break; } snakeGame.putSnakeInMap(snakeLine); snakeGame.show(); } } //用字符画背景 private void initBackground() { for (int i = 0; i < HEIGHT; i++) { //外围控制行 for (int j = 0; j < WIDTH; j++) { //内循环控制各行的第几个 this.map[i][j] = (j == 0 || (j == WIDTH - 1) || i == 0 || (i == HEIGHT - 1)) ? '*' : ' '; } } } //显示背景 public void show() { int height = map.length; int width = map[0].length; for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { System.out.print(map[i][j]); } System.out.println(); } } //把加到地图 void putSnakeInMap(SnakeLine snakeLine) { Point p; this.initBackground(); map[SnakeLine.food.y][SnakeLine.food.x] = SnakeLine.worm; for (int i = 0; i < snakeLine.snakePoints.size(); i++) { p = snakeLine.snakePoints.get(i); if (p.y > 0 && p.y < HEIGHT - 1 && p.x > 0 && p.x < WIDTH - 1) { map[p.y][p.x] = (i == 0) ? snakeLine.head : snakeLine.body; } else { putGameOverInMap(snakeLine.snakePoints.size()); } } } void putGameOverInMap(int points) { char[] gameOver = ("GameOver Score:"+(points-3)).toCharArray(); for (int i = 0; i < gameOver.length; i++) { map[HEIGHT / 2 - 1][i + (WIDTH - gameOver.length) / 2] = gameOver[i]; } show(); System.exit(1); } } class SnakeLine { static final int RIGHT = 0, DOWN = 1, LEFT = 2, UP = 3; static final char head = 'O', body = 'o', worm = '~';//头和身体表示 static Point food = new Point((int) (Math.random() * (SnakeGame.WIDTH - 2)) + 1, (int) (Math.random() * (SnakeGame.HEIGHT - 2)) + 1); private void newFood() { food = new Point((int) (Math.random() * (SnakeGame.WIDTH - 2)) + 1, (int) (Math.random() * (SnakeGame .HEIGHT - 2)) + 1); } LinkedList<Point> snakePoints = new LinkedList<>();//蛇的身体内容 void initSnake() { Point head = new Point(SnakeGame.WIDTH / 2, SnakeGame.HEIGHT / 2); snakePoints.addFirst(head);//头 snakePoints.addLast(new Point(head.x - 1, head.y)); snakePoints.addLast(new Point(head.x - 2, head.y)); } int move(int orient) { Point p = snakePoints.getFirst(); Point np = null; switch (orient) { case SnakeLine.RIGHT: np = new Point(p.x + 1, p.y); break; case SnakeLine.LEFT: np = new Point(p.x - 1, p.y); break; case SnakeLine.DOWN: np = new Point(p.x, p.y + 1); break; case SnakeLine.UP: np = new Point(p.x, p.y - 1); break; } if (snakePoints.contains(np)) { return -1;//咬到自己了 } snakePoints.addFirst(np); if (np.equals(food)) { //吃到食物了 newFood(); return 2; } snakePoints.removeLast(); return 1; } }
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