这是我到目前为止的内容:播放器可以键入北,东,南,西和帮助之类的命令,它可以正常工作。当我实现Look命令时,我的问题就来了。我记录了当前房间的描述,但是它从未改变。我belive,问题可能与那些神秘的引用和值类型有关,但是我没有足够的经验来确定或解决它。但是,当我将Console.WriteLine(CurrentRoom.RoomDescription)放在任何currentRoom.SetCurrentRoom(房间,播放器)下时,它工作得很好。
主类:
class Program
{
static void Main(string[] args)
{
Room currentRoom;
List<Room> rooms = new List<Room>();
Player player = new Player();
//Rooms
Room startingRoom = new Room("Starting room", "This is the starting room", 0, 0);
Room northRoom = new Room("North room", "This is the north room", 0, 1);
Room eastRoom = new Room("East room", "This is the east room", 1, 0);
Room southRoom = new Room("South room", "This is the south room", 0, -1);
Room westRoom = new Room("West room", "This is the west room", -1, 0);
//Add and set starting room as current room
rooms.Add(startingRoom);
currentRoom = startingRoom;
//Adding rooms
rooms.Add(northRoom);
rooms.Add(eastRoom);
rooms.Add(southRoom);
rooms.Add(westRoom);
Console.WriteLine("Welcome to the Dungeon. This is the starting room.");
GetHelp();
Console.WriteLine("There are four exits. Which way do you want to go?");
while (true)
{
HandleInput(player, currentRoom, rooms);
}
}
private static void GetHelp()
{
Console.WriteLine("You can move to locations by entering 'North', 'East', 'South', and 'West'.");
Console.WriteLine("You can also examine the room by entering 'Look'.");
Console.WriteLine("Type 'Help' at any time to view instructions.");
}
private static Room SetCurrentRoom(List<Room> rooms, Player player)
{
foreach (var room in rooms)
{
if (room.XPos == player.PlayerXPos && room.YPos == player.PlayerYPos)
{
return room;
}
}
Console.WriteLine("Invalid direction.");
return null;
}
private static void HandleInput(Player player, Room currentRoom, List<Room> rooms)
{
var input = Console.ReadLine();
if (input == "North")
{
player.Move(Direction.Directions.North);
currentRoom = SetCurrentRoom(rooms, player);
}
else if (input == "East")
{
player.Move(Direction.Directions.East);
currentRoom = SetCurrentRoom(rooms, player);
}
else if (input == "South")
{
player.Move(Direction.Directions.South);
currentRoom = SetCurrentRoom(rooms, player);
}
else if (input == "West")
{
player.Move(Direction.Directions.West);
currentRoom = SetCurrentRoom(rooms, player);
}
else if (input == "Help")
{
GetHelp();
}
else if (input == "Look")
{
Console.WriteLine(currentRoom.RoomDescription);
}
else
{
Console.WriteLine("Invalid input.");
}
}
}
房间等级:
public class Room
{
public string RoomName { get; set; }
public string RoomDescription { get; set; }
public int XPos { get; set; }
public int YPos { get; set; }
public Room(string roomName, string roomDescription, int xPos, int yPos)
{
this.RoomName = roomName;
this.RoomDescription = roomDescription;
this.XPos = xPos;
this.YPos = yPos;
}
}
玩家等级:
public class Player
{
public int Health { get; set; }
public string Name { get; set; }
public int PlayerXPos { get; set; }
public int PlayerYPos { get; set; }
public void Move(Direction.Directions direction)
{
switch (direction)
{
case Direction.Directions.North:
PlayerYPos += 1;
Console.WriteLine("Moving north");
break;
case Direction.Directions.East:
PlayerXPos += 1;
Console.WriteLine("Moving east.");
break;
case Direction.Directions.South:
PlayerYPos -= 1;
Console.WriteLine("Moving south.");
break;
case Direction.Directions.West:
PlayerXPos -= 1;
Console.WriteLine("Moving west.");
break;
}
}
}
方向类:
public class Direction
{
public enum Directions
{
North,
East,
South,
West
}
}
我是一个初学者,所以代码可能会使经验丰富的程序员反感。
我相信,问题可能与那些神秘的引用和值类型有关
您是正确的。
您的HandleInput
方法的签名是这个:
private static void HandleInput(Player player, Room currentRoom, List<Room> rooms)
但是您正在设置currentRoom
在该方法内,并且它是引用类型(class
)。
因此,此设置仅影响传递给方法的变量:默认情况下,您可以更改该变量的属性,但不能更改actual变量-除非您通过引用将其传递,如下所示:
private static void HandleInput(Player player, ref Room currentRoom, List<Room> rooms)
在这种情况下,您会这样称呼它:
HandleInput(player, ref currentRoom, rooms);
ref
关键字的意思是,您调用的方法可以更改值类型currentRoom
所引用的“基础对象”。