NanoBrain-unitypackage/Editor/ConfigurationChecker.cs

using System;
using UnityEditor;
using UnityEditor.Build;
using UnityEditor.Callbacks;

namespace Passer {

    class ConfigurationChecker {

        [DidReloadScripts]
        protected static void DidReloadScripts() {
            CheckUnityMathematics();
        }

        public static bool CheckUnityMathematics() {
            bool available = isUnityMathematicsAvailable;
            UpdateDefine(available, "UNITY_MATHEMATICS");
            return available;
        }

        protected static void UpdateDefine(bool enabled, string define) {
            if (enabled)
                GlobalDefine(define);
            else
                GlobalUndefine(define);
        }


        public static void GlobalDefine(string name) {
            // UnityEngine.Debug.Log("Define " + name);
            BuildTargetGroup buildTargetGroup = EditorUserBuildSettings.selectedBuildTargetGroup;
            NamedBuildTarget namedBuildTarget = NamedBuildTarget.FromBuildTargetGroup(buildTargetGroup);
            string scriptDefines = PlayerSettings.GetScriptingDefineSymbols(namedBuildTarget);
            if (!scriptDefines.Contains(name)) {
                string newScriptDefines = scriptDefines + " " + name;
                if (EditorUserBuildSettings.selectedBuildTargetGroup != 0)
                    PlayerSettings.SetScriptingDefineSymbols(namedBuildTarget, newScriptDefines);
            }
        }

        public static void GlobalUndefine(string name) {
            // UnityEngine.Debug.Log("Undefine " + name);
            BuildTargetGroup buildTargetGroup = EditorUserBuildSettings.selectedBuildTargetGroup;
            NamedBuildTarget namedBuildTarget = NamedBuildTarget.FromBuildTargetGroup(buildTargetGroup);
            string scriptDefines = PlayerSettings.GetScriptingDefineSymbols(namedBuildTarget);
            if (scriptDefines.Contains(name)) {
                int playMakerIndex = scriptDefines.IndexOf(name);
                string newScriptDefines = scriptDefines.Remove(playMakerIndex, name.Length);
                PlayerSettings.SetScriptingDefineSymbols(namedBuildTarget, newScriptDefines);
            }

        }

        #region Availability

        #region Packages

        private static bool isUnityMathematicsAvailable {
            get => DoesTypeExist("Unity.Mathematics.float3");
        }
        #endregion Packages

        public static bool DoesTypeExist(string className) {
            System.Reflection.Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
            foreach (System.Reflection.Assembly assembly in assemblies) {
                if (assembly.GetType(className) != null)
                    return true;
            }
            return false;
        }

        #endregion Availability
    }

}