[游戏开发]创建sprite数字字体

using System;
using UnityEditor;
using UnityEngine;

public class CreateFont : EditorWindow
{
    [MenuItem("创建字体")]
    public static void Open()
    {
        GetWindow<CreateFont>("创建字体");
    }

    private Texture2D tex;
    private string specialCharAscii;

    private void OnGUI()
    {
        GUILayout.BeginVertical();

        GUILayout.Space(10);
        GUILayout.BeginHorizontal();
        GUILayout.Label("字体图片：");
        tex = (Texture2D)EditorGUILayout.ObjectField(tex, typeof(Texture2D), true);
        GUILayout.EndHorizontal();

        GUILayout.Space(10);
        GUILayout.BeginHorizontal();
        GUILayout.Label("Special Char Ascii");
        specialCharAscii = EditorGUILayout.TextField(specialCharAscii);
        GUILayout.EndHorizontal();

        GUILayout.Space(10);
        GUILayout.BeginHorizontal();
        if (GUILayout.Button("创建", GUILayout.Height(35)))
        {
            Create();
        }
        GUILayout.EndHorizontal();

        GUILayout.EndVertical();
    }

    private void Create()
    {
        if (tex == null)
        {
            Debug.LogError("创建失败，图片为空！");
            return;
        }

        string selectionPath = AssetDatabase.GetAssetPath(tex);
        string fontPath = selectionPath.Split(new[] { tex.name }, StringSplitOptions.None)[0];
        string fontName = tex.name;

        string[] specialChar = new string[] { };
        if (specialCharAscii != null && specialCharAscii.Length > 0)
            specialChar = specialCharAscii.Split(',', (char)StringSplitOptions.RemoveEmptyEntries);

        string fontPathName = fontPath + fontName + ".fontsettings";
        string matPathName = fontPath + fontName + ".mat";
        float lineSpace = 0.1f;

        object[] sprites = AssetDatabase.LoadAllAssetsAtPath(selectionPath);
        if (sprites.Length > 0)
        {
            Material mat = new Material(Shader.Find("GUI/Text Shader"));
            mat.SetTexture("_MainTex", tex);
            Font m_myFont = new Font();
            m_myFont.material = mat;
            CharacterInfo[] characterInfo = new CharacterInfo[sprites.Length - 1];
            for (int i = 1; i < sprites.Length; i++)
            {
                Sprite sprite = sprites[i] as Sprite;
                if (sprite.rect.height > lineSpace)
                    lineSpace = sprite.rect.height;
            }
            for (int i = 0; i < sprites.Length - 1; i++)
            {
                Sprite spr = sprites[i + 1] as Sprite;
                CharacterInfo info = new CharacterInfo();
                if (i < 10) info.index = 48 + i;
                else if (specialChar.Length + 10 > i)
                    info.index = int.Parse(specialChar[i - 10]);

                Rect rect = spr.rect;
                float pivot = spr.pivot.y / rect.height - 0.5f;
                if (pivot > 0)
                    pivot = -lineSpace / 2 - spr.pivot.y;
                else if (pivot < 0)
                    pivot = -lineSpace / 2 + rect.height - spr.pivot.y;
                else
                    pivot = -lineSpace / 2;

                int offsetY = (int)(pivot + (lineSpace - rect.height) / 2);
                info.uvBottomLeft = new Vector2(rect.x / tex.width, rect.y / tex.height);
                info.uvBottomRight = new Vector2((rect.x + rect.width) / tex.width, rect.y / tex.height);
                info.uvTopLeft = new Vector2(rect.x / tex.width, (rect.y + rect.height) / tex.height);
                info.uvTopRight = new Vector2((rect.x + rect.width) / tex.width, (rect.y + rect.height) / tex.height);
                info.minX = 0;
                info.minY = -(int)rect.height - offsetY;
                info.maxX = (int)rect.width;
                info.maxY = -offsetY;
                info.advance = (int)rect.width;
                characterInfo[i] = info;
            }
            AssetDatabase.CreateAsset(mat, matPathName);
            AssetDatabase.CreateAsset(m_myFont, fontPathName);
            m_myFont.characterInfo = characterInfo;
            EditorUtility.SetDirty(m_myFont);
            AssetDatabase.SaveAssets();
            AssetDatabase.Refresh();
            Debug.LogError("创建字体成功");
        }
        else
        {
            Debug.LogError("图集错误！");
        }
    }
}

需要以下几步就可以搞定啦

1. 将图片的textureType改为sprite，spriteMode改为Multiple
2. 打开spriteEditor, 把一个Sprite切割成多个
3. 在unity的菜单栏找到 创建字体
4. 在project界面找到刚才的图片，拖入到工具的 字体图片 栏里
5. 如果有特殊符号，可以在工具的 Special Char Ascii 里填上对应的ASCII码，有多个时，可以用逗号，隔开
6. 点击创建。OK啦

注意：图片数字要以0开始顺序排哦