Question

我想做一个有趣的终端图形库，看起来有很多很酷的责任，比如，asciimoo/drawille。

使用\ r \ n可以重绘当前行但是前行怎么样？
例如，我输出了三行（也许不应该使用\n）：

print("00000\n")
print("0   0\n")
print("00000\n")

//output
00000
0   0
00000

在下一帧（例如0.1秒后），我想重绘第二行和第三行。希望结果为：

00000
00 00
00 00

如何在终端中执行此操作？

Answer 1

这将根据用户输入的内容设置一个具有不同状态的控制台。现在我只能有能力上升（＆＃34; w＆＃34;）或下去（＆＃34; s＆＃34;）

public static void main(String[] args) {

        HashMap<Integer, HashMap<String, String>> consoleStates = CreateConsoleStates();
        String input = "default";
        Scanner userInput = new Scanner(System.in);
        do {
            //draw default state of board
            if(input.equals("default") || input.equals("w") || input.equals("s"))
                printConsole(input, consoleStates);
            //get input from user until they exit
            input = userInput.nextLine().replaceAll("\n", "");

        } while (!input.equals("exit"));

    }//main method

    public static HashMap<Integer, HashMap<String, String>> CreateConsoleStates()
    {
        HashMap<Integer, HashMap<String, String>> consoleStates = new HashMap<>();
        HashMap<String, String> line1, line2, line3;

        line1 = new HashMap<>();
        line1.put("default", "00000");
        line1.put("w", "00000");
        line1.put("s", "00 00");

        line2 = new HashMap<>();
        line2.put("default", "0   0");
        line2.put("w", "00 00");
        line2.put("s", "00 00");

        line3 = new HashMap<>();
        line3.put("default", "00000");
        line3.put("w", "00 00");
        line3.put("s", "00000");

        consoleStates.put(1, line1);
        consoleStates.put(2, line2);
        consoleStates.put(3, line3);

        return consoleStates;

    }

    public static void printConsole(String state, HashMap<Integer, HashMap<String, String>> consoleStates)
    {
        //adding this will make it seem like a brand new console as suggested in another answer
        //System.out.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
        //each number corresponds to the line in the console
        System.out.println(consoleStates.get(1).get(state));
        System.out.println(consoleStates.get(2).get(state));
        System.out.println(consoleStates.get(3).get(state));
    }
}

输出如下：

注意：我使用大多数游戏都有的标准wsad控件。我推荐它。 w为up，a为left，s为down，d为right。每当按下错误的键并且＆＃34;退出＆＃34;用于退出游戏。

如何在java中重绘打印控制台信息？

1 个答案: