Unity script for floats and int that should stay between two values, with a custom inspector

ClampedFloat.cs

using System;
using UnityEngine;
using UnityEditor;

[Serializable]
public class ClampedFloat {
    public float minimum;
    public float maximum;
    public float starting;
    public float _current;

    public delegate void TargetHitHandler(ClampedFloat sender);
    public event TargetHitHandler MinimumHit;
    public event TargetHitHandler MaximumHit;

    public delegate void ValueChangedHandler(ClampedFloat sender, float oldValue);
    public event ValueChangedHandler ValueChanged;

    public float Current {
        get {
            return _current;
        }
        set {
            float previous = _current;
            _current = Mathf.Clamp(value, minimum, maximum);
            ValueChanged?.Invoke(this, previous);
            if(_current == minimum) {
                MinimumHit?.Invoke(this);
            }
            if(_current == maximum) {
                MaximumHit?.Invoke(this);
            }
        }
    }
}

[CustomPropertyDrawer(typeof(ClampedFloat))]
public class ClampedFloatDrawer : PropertyDrawer {
    public override float GetPropertyHeight(SerializedProperty property, GUIContent label) {
        return EditorGUIUtility.singleLineHeight * 5 + 12;
    }

    public override void OnGUI(Rect pos, SerializedProperty property, GUIContent label) {

        Rect labelRect = new Rect(pos.x, pos.y, pos.width, EditorGUIUtility.singleLineHeight);        
        Rect minimumRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight + 2, pos.width, EditorGUIUtility.singleLineHeight);
        Rect maximumRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight * 2 + 4, pos.width, EditorGUIUtility.singleLineHeight);
        Rect startingRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight * 3 + 6, pos.width, EditorGUIUtility.singleLineHeight);
        Rect currentRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight * 4 + 10, pos.width, EditorGUIUtility.singleLineHeight);

        EditorGUI.BeginProperty(pos, label, property);

        EditorGUI.LabelField(labelRect, label);

        EditorGUI.indentLevel += 1;

        GUIContent minimumLabel;
        if(Application.isPlaying) {
            minimumLabel = new GUIContent("⚠️ Minimum", "WARNING: Changing this value won't trigger MinimumHit events!");
        }
        else {
            minimumLabel = new GUIContent("Minimum", "The minimum value of this variable.");
        }
        EditorGUI.PropertyField(minimumRect, property.FindPropertyRelative("minimum"), minimumLabel); 

        GUIContent maximumLabel;
        if(Application.isPlaying) {
            maximumLabel = new GUIContent("⚠️ Maximum", "WARNING: Changing this value won't trigger MaximumHit events!");
        }
        else {
            maximumLabel = new GUIContent("Maximum", "The starting value of this variable.");
        }
        EditorGUI.PropertyField(maximumRect, property.FindPropertyRelative("maximum"), maximumLabel);

        GUIContent startingLabel;
        if(Application.isPlaying) {
            GUI.enabled = false;
            startingLabel = new GUIContent("Starting", "The starting value cannot be set while the game is playing.");
        }
        else {
            GUI.enabled = true;
            startingLabel = new GUIContent("Starting", "The starting value of this variable.");
        }
        EditorGUI.PropertyField(startingRect, property.FindPropertyRelative("starting"), startingLabel);

        GUIContent currentLabel;
        if(Application.isPlaying) {
            GUI.enabled = true;
            currentLabel = new GUIContent("⚠️ Current", "WARNING: Changing this value won't trigger any events!");
        }
        else {
            GUI.enabled = false;
            currentLabel = new GUIContent("Current", "The current value cannot be set while the game is not playing.");
        }
        EditorGUI.PropertyField(currentRect, property.FindPropertyRelative("_current"), currentLabel);

        GUI.enabled = true;

        EditorGUI.indentLevel -= 1;

        EditorGUI.EndProperty();
    }
}

ClampedInt.cs

using System;
using UnityEngine;
using UnityEditor;

[Serializable]
public class ClampedInt {
    public int minimum;
    public int maximum;
    public int starting;
    public int _current;

    public delegate void TargetHitHandler(ClampedInt sender);
    public event TargetHitHandler MinimumHit;
    public event TargetHitHandler MaximumHit;

    public delegate void ValueChangedHandler(ClampedInt sender, int oldValue);
    public event ValueChangedHandler ValueChanged;

    public int Current {
        get {
            return _current;
        }
        set {
            int previous = _current;
            _current = Mathf.Clamp(value, minimum, maximum);
            ValueChanged?.Invoke(this, previous);
            if(_current == minimum) {
                MinimumHit?.Invoke(this);
            }
            if(_current == maximum) {
                MaximumHit?.Invoke(this);
            }
        }
    }
}

[CustomPropertyDrawer(typeof(ClampedInt))]
public class ClampedIntDrawer : PropertyDrawer {
    public override float GetPropertyHeight(SerializedProperty property, GUIContent label) {
        return EditorGUIUtility.singleLineHeight * 5 + 10;
    }

    public override void OnGUI(Rect pos, SerializedProperty property, GUIContent label) {

        Rect labelRect = new Rect(pos.x, pos.y, pos.width, EditorGUIUtility.singleLineHeight);        
        Rect minimumRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight + 2, pos.width, EditorGUIUtility.singleLineHeight);
        Rect maximumRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight * 2 + 4, pos.width, EditorGUIUtility.singleLineHeight);
        Rect startingRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight * 3 + 6, pos.width, EditorGUIUtility.singleLineHeight);
        Rect currentRect = new Rect(pos.x, pos.y + EditorGUIUtility.singleLineHeight * 4 + 10, pos.width, EditorGUIUtility.singleLineHeight);

        EditorGUI.BeginProperty(pos, label, property);

        EditorGUI.LabelField(labelRect, label);

        EditorGUI.indentLevel += 1;

        GUIContent minimumLabel;
        if(Application.isPlaying) {
            minimumLabel = new GUIContent("⚠️ Minimum", "WARNING: Changing this value won't trigger MinimumHit events!");
        }
        else {
            minimumLabel = new GUIContent("Minimum", "The minimum value of this variable.");
        }
        EditorGUI.PropertyField(minimumRect, property.FindPropertyRelative("minimum"), minimumLabel); 

        GUIContent maximumLabel;
        if(Application.isPlaying) {
            maximumLabel = new GUIContent("⚠️ Maximum", "WARNING: Changing this value won't trigger MaximumHit events!");
        }
        else {
            maximumLabel = new GUIContent("Maximum", "The starting value of this variable.");
        }
        EditorGUI.PropertyField(maximumRect, property.FindPropertyRelative("maximum"), maximumLabel);

        GUIContent startingLabel;
        if(Application.isPlaying) {
            GUI.enabled = false;
            startingLabel = new GUIContent("Starting", "The starting value cannot be set while the game is playing.");
        }
        else {
            GUI.enabled = true;
            startingLabel = new GUIContent("Starting", "The starting value of this variable.");
        }
        EditorGUI.PropertyField(startingRect, property.FindPropertyRelative("starting"), startingLabel);

        GUIContent currentLabel;
        if(Application.isPlaying) {
            GUI.enabled = true;
            currentLabel = new GUIContent("⚠️ Current", "WARNING: Changing this value won't trigger MinimumHit and MaximumHit events!");
        }
        else {
            GUI.enabled = false;
            currentLabel = new GUIContent("Current", "The current value cannot be set while the game is not playing.");
        }
        EditorGUI.PropertyField(currentRect, property.FindPropertyRelative("_current"), currentLabel);

        GUI.enabled = true;

        EditorGUI.indentLevel -= 1;

        EditorGUI.EndProperty();
    }
}