开关或者其他东西

Question

我正在制作一些关于清洁工的游戏应用程序。它处于早期阶段，到目前为止我对此感到自豪，但是随着时间的推移，我的代码变得非常混乱，所以我决定过来寻求任何帮助，以另一种方式解决/重新制作/实现该代码，而无需这么多案例。我正在考虑实施某种设计模式，但我不确定是哪一种。如有任何帮助，我们将不胜感激。

bool JanitorApp::key(unsigned char key)
{
if (MainApp::key(key)) return true;

switch(key) {
case 'Q': case 'q':
    current[0] = NULL;
    status[0] = "Stationary";
    return true;
case 'W': case 'w':
    current[0] = &cleans[0];
    status[0] = "Cleaning";
    return true;
case 'E': case 'e':
    current[0] = &eats[0];
    status[0] = "Eating";
    return true;
case 'R': case 'r':
    current[0] = &guards[0];
    status[0] = "Guarding";
    return true;

case 'A': case 'a':
    current[1] = NULL;
    status[1] = "Stationary";
    return true;
case 'S': case 's':
    current[1] = &cleans[1];
    status[1] = "Cleaning";
    return true;
case 'D': case 'd':
    current[1] = &eats[1];
    status[1] = "Eating";
    return true;
case 'F': case 'f':
    current[1] = &guards[1];
    status[1] = "Guarding";
    return true;

      case 'Z': case 'z':
    current[2] = NULL;
    status[2] = "Stationary";
    return true;
case 'X': case 'x':
    current[2] = &cleans[2];
    status[2] = "Cleaning";
    return true;
case 'C': case 'c':
    current[2] = &eats[2];
    status[2] = "Eating";
    return true;
case 'V': case 'v':
    current[2] = &guards[2];
    status[2] = "Guarding";
    return true;
}

return false;}

Answer 1

您可以从查看命令模式开始。用多态性重构替换条件也可能令人感兴趣。

Answer 2

//One of the ways to use the command pattern
    public interface Command{
    Player create();
    }
    public class CreatePlayerCommand {
    private static final Map<String, Command> PLAYERS;
    static {
    final Map<String, Command> players = new HashMap<>();
    players.put("TENNIS", new Command(){
    public Player create(){
      return new TennisPlayer();
     }});
    players.put("FOOTBALL", new Command(){
       public Player create() {
         return new FootballPlayer();
    }});
    
    players.put("SNOOKER", new Command(){
    public Player create() {
       return new SnookerPlayer();
    }});
      PLAYERS = Collections.unmodifiableMap(players);
    }
    
    public Player createPlayer(String playerType){
      Command command = PLAYERS.get(playerType);
    if(command==null){
      throw new IllegalArgumentException("Invalid player type: " + playerType);
    }
       return command.create();
    }}