c#字段必须完全赋值错误
本文关键字：赋值 错误 字段 | 更新日期: 2023-09-27 18:18:24
我正在做这个游戏，我得到了错误。"在将控制权返回给调用方之前，必须完全分配字段"。我似乎就是弄不明白，它快把我逼疯了。这是我的代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenTK;
using OpenTK.Graphics.OpenGL;
using System.Drawing;
using System.IO;
namespace Box2
{
struct Level
{
private Block[,] grid;
public int Height
{
get {
return grid.GetLength(1);
}
}
public int Width {
get
{
return grid.GetLength(0);
}
}
public enum BlockType
{
Solid,
Empty,
Platform,
Ladder,
LadderPlatform
}
struct Block
{
private BlockType type;
private int posX, posY;
private bool solid, platform, ladder;
public BlockType Type
{
get { return type; }
}
public int X
{
get { return posX; }
}
public int Y
{
get { return posY; }
}
public bool IsSolid
{
get { return solid; }
}
public bool IsPlatform
{
get { return platform; }
}
public bool IsLadder
{
get { return ladder; }
}
private Block[,] grid;
private string filename;
public Point playerStartaPos;
public Block(BlockType type, int x, int y)
{
this.posX = x;
this.posY = y;
this.type = type;
this.ladder = false;
this.solid = false;
this.platform = false;
switch (type)
{
case BlockType.Ladder:
ladder = true;
break;
case BlockType.LadderPlatform:
ladder = true;
platform = true;
break;
case BlockType.Solid:
solid = true;
break;
case BlockType.Platform:
platform = true;
break;
default:
break;
}
}
public Block this[int x, int y]
{
get
{
return grid[x, y];
}
set
{
grid[x, y] = value;
}
}
public string FileName
{
get { return filename; }
}
public void Level (int width, int height)
{
grid = new Block[width, height];
filename = "none";
playerStartaPos = new Point(1,1);
for (int x=0; x < width; x++)
{
for (int y =0; y< height; y++)
{
if (x == 0 || y ==0 || x ==width -1 || y == height -1)
{
grid[x, y] = new Block(BlockType.Solid, x, y);
}
else
{
grid[x, y] = new Box2.Level.Block(BlockType.Empty, x, y);
}
}
}
}
}
}
}
这意味着你的结构中的所有字段都应该在你的构造函数中初始化
你忘了在你的Block结构体
private Block[,] grid;
private string filename;
public Point playerStartaPos;
，但我建议您在这种情况下使用类什么时候使用结构体?
我知道这篇文章已经发布一周了，但我想我应该提出我的意见。
你得到这些错误的原因是因为当你在c#中创建一个结构时，你必须初始化构造函数中的所有字段。我不能100%确定你对c#的了解程度，所以我冒昧地为你修改了你的代码。请注意，事情可以写得更整洁一些，你应该努力实现漂亮的代码结构。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.IO;
namespace Box2
{
struct Level
{
private Block[,] grid;
public int Height
{
get
{
return grid.GetLength(1);
}
}
public int Width
{
get
{
return grid.GetLength(0);
}
}
public enum BlockType
{
Solid,
Empty,
Platform,
Ladder,
LadderPlatform
}
struct Block
{
private BlockType type;
private int posX, posY;
private bool solid, platform, ladder;
public BlockType Type
{
get { return type; }
}
public int X
{
get { return posX; }
}
public int Y
{
get { return posY; }
}
public bool IsSolid
{
get { return solid; }
}
public bool IsPlatform
{
get { return platform; }
}
public bool IsLadder
{
get { return ladder; }
}
private Block[,] grid;
private string filename;
public Point playerStartaPos;
public Block(BlockType type, int x, int y)
{
this.grid = null;
this.filename = null;
this.playerStartaPos = Point.Empty;
this.posX = x;
this.posY = y;
this.type = type;
this.ladder = false;
this.solid = false;
this.platform = false;
switch (type)
{
case BlockType.Ladder:
ladder = true;
break;
case BlockType.LadderPlatform:
ladder = true;
platform = true;
break;
case BlockType.Solid:
solid = true;
break;
case BlockType.Platform:
platform = true;
break;
default:
break;
}
}
public Block this[int x, int y]
{
get
{
return grid[x, y];
}
set
{
grid[x, y] = value;
}
}
public string FileName
{
get { return filename; }
}
public void Level(int width, int height)
{
grid = new Block[width, height];
filename = "none";
playerStartaPos = new Point(1, 1);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
if (x == 0 || y == 0 || x == width - 1 || y == height - 1)
{
grid[x, y] = new Block(BlockType.Solid, x, y);
}
else
{
grid[x, y] = new Box2.Level.Block(BlockType.Empty, x, y);
}
}
}
}
}
}
}
如果这有助于你解决你的问题，请记住通过点击我的答案左边的勾号来接受我的答案。
还有，最后一件事。我注意到这段代码来自Youtube上的一个平台教程，我只想说，如果你热衷于用OpenTK学习c#，这些是迄今为止你能得到的最好的参考:
(这是c++，但仍然值得深入研究!)
学习OpenGL这个是c#
学习OpenTK最后，在Youtube上有一个名为"3D游戏引擎教程"的教程，由BennyBox，他带你踏上创造你自己的3D游戏引擎的旅程，甚至为你提供每个教程的代码。一定要去看看。
祝你有美好的一天!