Extend Unity script templates

1_README.md

Extend Unity script templates.

1. Put .txt file into %UNITY_EDITOR_PATH&\Data\Resources\ScriptTemplates

2. Put .cs file into Assets\Editor

81-C# Script-NewBehaviourScript.cs.txt

/*
 *  #CREATIONDATE#
 *  #PROJECTNAME# created by #COMPANYNAME#
 */

using UnityEngine;

    #ROOTNAMESPACEBEGIN#
namespace #PROJECTNAME#
{
    /// <summary>  
    /// Brief summary of what the class does
    /// </summary>
    public class #SCRIPTNAME# : MonoBehaviour
    {
        #region Fields
            #NOTRIM#
        #endregion
            #NOTRIM#
        #region Properties
            #NOTRIM#
        #endregion
            #NOTRIM#
        #region LifeCycles
        private void Awake()
        {
            #NOTRIM#
        }
        private void Start()
        {
            #NOTRIM#
        }

        private void Update()
        {
            #NOTRIM#
        }
        #endregion
            #NOTRIM#
        #region PublicMethods
            #NOTRIM#
        #endregion
            #NOTRIM#

    }
}
#ROOTNAMESPACEEND#

ScriptPreprocessor.cs

using UnityEditor;
using System.IO;

public class ScriptPreprocessor : UnityEditor.AssetModificationProcessor
{

    public static void OnWillCreateAsset(string metaFilePath)
    {
        string fileName = Path.GetFileNameWithoutExtension(metaFilePath);

        if (!fileName.EndsWith(".cs"))
            return;

        string actualFilePath = $"{Path.GetDirectoryName(metaFilePath)}{Path.DirectorySeparatorChar}{fileName}";

        string content = File.ReadAllText(actualFilePath);
        string newContent = content.Replace("#PROJECTNAME#", PlayerSettings.productName);
        newContent = newContent.Replace("#CREATIONDATE#", System.DateTime.Now + "");
        newContent = newContent.Replace("#COMPANYNAME#", PlayerSettings.companyName);
        if (content == newContent) 
            return;
        
        File.WriteAllText(actualFilePath, newContent);
        AssetDatabase.Refresh();
    }
}