c# - 初学者角色扮演游戏碰撞检测

Question

再次感谢您对我之前问题的帮助。

我在为娱乐和教育而制作的角色扮演游戏上取得了更多进步。我现在可以从 .txt 文件(彩色!)显示我的 map ，所以我很高兴一切正常。

接下来我要实现的是碰撞检测系统。例如:如果我的玩家角色试图踩到一个'~'角色，程序不会移动玩家角色，因为'~'是水，不能在上面行走。

我的移动系统和加载 map 的代码如下:

using System;
using System.IO;

namespace TextFileReaderTest
{
class Program
{
    public static int PosX;
    public static int PosY;
    static void DisplayMap()
    {

        string line;
        //Pass the file path and file name to the StreamReader constructor
        StreamReader sr = new StreamReader(@"D:\personal\tests\Tests\ascii map tools\map1.txt");

        //Read the first line of text
        line = sr.ReadLine();

        //Continue to read until you reach end of file
        while (line != null)
        {
            Char[] MapArray = line.ToCharArray();
            foreach (Char c in MapArray)
            {
                if (c == '/')
                {
                    Console.ForegroundColor = ConsoleColor.DarkGreen;
                    Console.Write('/');
                }
                else if (c == '^')
                {
                    Console.ForegroundColor = ConsoleColor.DarkGreen;
                    Console.Write('^');
                }
                else if (c == '|')
                {
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.Write('|');
                }
                else if (c == '.')
                {
                    Console.ForegroundColor = ConsoleColor.Green;
                    Console.Write('.');
                }
                else if (c == 'o')
                {
                    Console.ForegroundColor = ConsoleColor.DarkCyan;
                    Console.Write('o');
                }
                else if (c == '~')
                {
                    Console.ForegroundColor = ConsoleColor.DarkCyan;
                    Console.Write('~');
                }
                else
                {
                    Console.Write(c);
                    Console.ForegroundColor = System.ConsoleColor.White;
                }


            }
            //Read the next line
            line = sr.ReadLine();
        }

                //close the file
                sr.Close();

    }




    static void Main(string[] args)
    {
        Console.WindowWidth = 128;
        Console.WindowHeight = 32;
        DisplayMap();
        Console.SetCursorPosition(10, 10); //the cursor will be set at x = 10 and y = 10

        while (true)
        {
            ConsoleKeyInfo input = Console.ReadKey(true);
            PosX = Console.CursorLeft;
            PosY = Console.CursorTop;

            switch (input.KeyChar)
            {

                case 'w':
                    if (PosY >= 1)
                    {
                        Console.SetCursorPosition(PosX + 0, PosY - 1);
                        PosX = Console.CursorLeft;
                        PosY = Console.CursorTop;
                        //if (PosX == 11 && PosY == 11 )            //this is a portal
                        //{
                        //    Console.SetCursorPosition(20, 20);    // clear console, teleport player, load new map 
                        //}
                    }
                    break;

                case 'a':
                    if (PosX >= 1)
                    {
                        Console.SetCursorPosition(PosX - 1, PosY + 0);
                    }
                    break;

                case 's':
                    if (PosY < 31)
                    {
                        Console.SetCursorPosition(PosX + 0, PosY + 1);
                    }
                    break;

                case 'd':
                    if (PosX < 127)
                    {
                        Console.SetCursorPosition(PosX + 1, PosY + 0);
                    }
                    break;

            }
        }
    }
}

许多“if else”语句是针对 map 中的颜色。请不要介意我的代码中有很多注释。每当我有想法时，我通常会在可以实现的地方写评论。另外，这是其他程序员的解释，我觉得很有用。我仍然是一个初学者，所以如果你能解释你的解决方案，那将不胜感激。

提前致谢!

Answer 1

为特定事物设置特定类是一种很好的做法。 IE。一个用于处理 map 的 Map 类，一个用于处理播放器的 Player 类，等等。

现在，为了处理碰撞，我将有两个 Map，一个用于存储和显示播放器图标以及诸如此类的东西，另一个用于图 block 的引用 Map (可以更容易地检查玩家在哪个方 block 上并正朝这边移动)。

Map 应该有一个 private char[][] 字段来存储瓦片，以便可以快速调用所述瓦片。

在你的 Player 类中的两个字段中存储角色的当前位置，X 和 Y，然后存储 next 位置到另外两个字段，NewX 和 NewY。在移动 Player 之前，将当前坐标存储到 PrevX 和 PrevY 中。

如果 TileMap[Player.NewX][Player.NewY] 处的图 block 是玩家不应该移动的地方，请不要更改 Player.X 和Player.Y。否则，将 Player.NewX 存储到 Player.X 并将 Player.NewY 存储到 Player.Y。

长话短说:

Player 类示例:

public class Player{
    public int X, Y;
    private int NewX, NewY;
    private int PrevX, PrevY;

    public Player(){
        X = 10;
        Y = 10;
        NewX = 0;
        NewY = 0;
        PrevX = 0;
        PrevY = 0;
    }

    //Add other constructors to initialize the coordinates

    public void Update(){
        //Call this method in `Main()` in a loop.  Make sure to add a delay between each call!
        PrevX = X;
        PrevY = Y;

        ConsoleKeyInfo input = Console.ReadKey(true);
        switch(input.KeyChar){
            case 'w':
                NewX = X;
                NewY = Y - 1;
                break;
            case 'a':
                NewX = X - 1;
                NewY = Y;
                break;
            case 's':
                NewX = X;
                NewY = Y + 1;
                break;
            case 'd':
                NewX = X + 1;
                NewY = Y;
        }

        //Add code to restrict the player to the window

        if(RPG.ReferenceMap[NewX][NewY] == '~'){  //Water tile
            NewX = X;
            NewY = Y;
        }

        //Check for other tiles the player should not walk on

        X = NewX;
        Y = NewY;
    }
}

Map 类示例:

public class Map{
    public char[][] TileMap;
    public int Height, Width;

    public Map(){
        TileMap = new char[16][16];  //Default to a 16x16 map
        Height = 16;
        Width = 16;
    }
    public Map(string file){
        //Load the map like you did above, but store the chars read into the TileMap array
        //Give the 'Height' and 'Width' fields the height and width of the map
    }

    public void Update(){
        //Call this AFTER Player.Update()

        //Use the reference map to add the correct tile to the previous position
        //and then update the Player's icon
        TileMap[Player.PrevX][Player.PrevY] = RPG.ReferenceMap.TileMap[Player.PrevX][Player.PrevY];

        TileMap[Player.X][Player.Y] = 'O';  //Assuming that 'O' is your player icon
    }

    public void Draw(){
        //Use the "TileMap" field to refresh the map

        Console.Clear();  //Clear the console

        foreach(char[] array in TileMap){
            foreach(char tile in array){
                //Use the logic you used in your "foreach" loop to draw the tiles.
            }
        }
    }
}

在你的主类中应该调用什么的例子，假设它被称为 RPG:

public class RPG{
    Player player;
    Map ReferenceMap, ActualMap;

    public static void Main(){
        player = new Player();  //Use the default constructor or another constructor
                                //to set the starting coords of the player

        ActualMap = new Map();  //Load the data into the map

        ReferenceMap = ActualMap;  //Since they are the same for now, just store
                                   //the data already there
        while(true){
            //Add a delay using Stopwatch, preferably 1/60th of a second
            Update();
        }
    }

    public void Update(){
        Player.Update();
        ActualMap.Update();

        ActualMap.Draw();
    }
}