Question

我仅使用DrawLine和for循环就在Unity中制作了8 x 8的网格。我的下一步是使每个框都有其官方组合，例如，左下角应为1a，左上角应为8a ... 我的计划是在现有循环中再次进行循环，但它只会给出错误。有人可以给我一些如何实现的提示

private void DrawChessboard()
{
    //8 units of 1 meter to the right
    Vector3 widthLine = Vector3.right * 8;
    //8 units of 1 meter up
    Vector3 heightLine = Vector3.forward * 8;

    //makes the 8 by 8
    for(int i = 0; i <= 8; i++)
    {
        Vector3 start = Vector3.forward * i;
        Debug.DrawLine(start, start + widthLine);
        for (int j = 0; j <= 8; j++)
        {
            start = Vector3.right * j;
            Debug.DrawLine(start, start + heightLine);
        }
    }

    //This draws the selection
    if (selectionX >= 0 && selectionY >= 0)
    {
        Debug.DrawLine(
            //Bottom left to top right
            Vector3.forward * selectionY + Vector3.right * selectionX,
            //this is the end point. +1 to make it diagonal
            Vector3.forward * (selectionY + 1) + Vector3.right * (selectionX + 1));

        Debug.DrawLine(
            //Bottom left to top right
            Vector3.forward * (selectionY +1) + Vector3.right * selectionX,
            //this is the end point. +1 to make it diagonal
            Vector3.forward * selectionY  + Vector3.right * (selectionX + 1));

    }
}

Answer 1

我仍然不确定您的方法在哪里正确调用，但是由于您使用Debug.DrawLine，所以我猜它是某种编辑器方法或脚本。因此，我将在OnDrawGizmos

中举例说明

如前所述，您可以使用Handles.Label(position, "Text")在SceneView中绘制文本作为调试标签。

为了得到正确的字符，我简单地使用

nextChar = (char)(currentChar + 1);

（要使其完整，我还添加了黑白字段）

所以看起来像

using UnityEditor;
using UnityEngine;

public class ChessFieldDebug : MonoBehaviour
{
    private void OnDrawGizmos()
    {
        //8 units of 1 meter to the right
        var widthLine = Vector3.right * 8;
        //8 units of 1 meter up
        var heightLine = Vector3.forward * 8;

        const char firstLetter = 'a';

        // Only for you I also added black and white fields
        var isBlackField = false;
        var black = new Color(0, 0, 0, 0.25f);
        var white = new Color(1, 1, 1, 0.25f);

        //makes the 8 by 8

        //rows
        for (var i = 0; i <= 8; i++)
        {
            var start = Vector3.forward * i;
            Debug.DrawLine(start, start + widthLine);

            //colums
            for (var j = 0; j <= 8; j++)
            {
                var currentLatter = (char)(firstLetter + j);
                start = Vector3.right * j;
                Debug.DrawLine(start, start + heightLine);

                // this flag alternates between black and white
                isBlackField = !isBlackField;

                // Since you draw the last line but don't want a field added skip if over 8
                if (i >= 8 || j >= 8) continue;

                var centerOfField = Vector3.forward * (i + 0.5f) + Vector3.right * (j + 0.5f);

                // Draw text label on fields with colum char + row index
                Handles.Label(centerOfField, currentLatter.ToString() + (i + 1));

                Gizmos.color = isBlackField ? black : white;
                Gizmos.DrawCube(Vector3.forward * (i + 0.5f) + Vector3.right * (j + 0.5f), new Vector3(1, 0.01f, 1));
            }
        }
    }
}

结果

请确保将其放置在Editor文件夹中，或使用诸如此类的预处理器标签

#if UNITY_EDITOR
using UnityEditor;
#endif
using UnityEngine;

public class ChessFieldDebug : MonoBehaviour
{
    #if UNITY_EDITOR
    private void OnDrawGizmos()
    {
        // ...
    }
    #endif
}

避免在构建项目时出现异常

使8 x 8网格具有正确的FEN表示法。像棋盘一样

1 个答案: