stats/Runtime/StatModifiersController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;

namespace KairoEngine.Stats
{
    [System.Serializable]
    public class StatModifiersController
    {
        [ListDrawerSettings(HideAddButton = false, HideRemoveButton = false, DraggableItems = false, Expanded = true, ShowPaging = false, ShowItemCount = false)]
        [PropertyOrder(1), LabelText("Modifiers"), OnCollectionChanged("Calculate")] public List<StatModifier> list = new List<StatModifier>();

        [HideInInspector] public int value = 0;
        [HideInInspector] public int minValue = 0;
        [HideInInspector] public int maxValue = 0;
        [System.NonSerialized] public Stat stat;

        public string pretyValue()
        {
             if(value > 0) return $"+{value}";
             else if (value == 0) return " 0 ";
             else return $"{value}";
        }

        public string pretyCount()
        {
            if(list.Count > 99) return $" {list.Count} ";
            else if (list.Count > 9) return $" {list.Count} ";
            else return $"  {list.Count}  ";
        }

        public StatModifiersController(Stat stat)
        {
            this.stat = stat;
        }

        public void Add(StatModifier statModifier)
        {
            list.Add(statModifier);
            Calculate();
        }

        public void Remove(StatModifier statModifier)
        {
            for (int i = 0; i < list.Count; i++)
            {
                if(statModifier.Equals(list[i]))
                {
                    list.Remove(list[i]);
                    Calculate();
                    return;
                }
            }
        }

        public bool HasModifier(StatModifier statModifier)
        {
            for (int i = 0; i < list.Count; i++)
            {
                if(statModifier.Equals(list[i])) return true;
            }
            return false;
        }

        public void Calculate()
        {
            if(stat == null) return;
            value = CalculateModifier("", stat.GetValueRaw());
            minValue = CalculateModifier("min", stat.GetMinValueRaw());
            maxValue = CalculateModifier("max", stat.GetMaxValueRaw());
            //Debug.Log($"{stat.title} Modifiers: value={value} minValue={minValue} maxValue={maxValue}");
        }

        private int CalculateModifier(string valueType, int statValue)
        {
            int values = 0;
            int percentage = 0;
            for (int i = 0; i < list.Count; i++)
            {
                if(list[i].endOp == "%" && list[i].valueType == valueType) 
                {
                    if(list[i].op == "+") percentage += list[i].value;
                    else percentage -= list[i].value;
                }
                else if(list[i].endOp == "" && list[i].valueType == valueType) 
                {
                     if(list[i].op == "+") values += list[i].value;
                     else values -= list[i].value;
                }
            }
            if(percentage != 0) percentage = ((statValue + values) * percentage) /100;
            return percentage + values;
        }
    }
}