Fruitomation/Assets/Scripts/Game/Buildings/Automation/MixerBuilding.cs

using PashaBibko.Pacore.Attributes;
using System.Collections.Generic;
using System.Linq;
using Fruitomation.Game.Items;
using Fruitomation.Global;
using UnityEngine;

namespace Fruitomation.Game
{
    public class MixerBuilding : Building
    {
        private struct Recipe
        {
            public ItemType[] Ingredients;
            public ItemType Product;

            public Recipe(ItemType[] ingredients, ItemType product)
            {
                Ingredients = ingredients;
                Product = product;
            }
        }

        private static Recipe[] Recipes = new Recipe[1]
        {
            new
            (
                new[] { ItemType.Apple, ItemType.Grape },
                ItemType.Banana
            ),
        };

        [Header("Mixer Specific")]
        [SerializeField] private RectTransform OutputLocation;
        [SerializeField] private TriggerDetector Trigger;

        [Header("Read Only")]
        [SerializeField, InspectorReadOnly] private int StoredItemCount;

        private readonly Dictionary<ItemType, int> StoredItems = new();
        
        private void Start()
        {
            Trigger.SetAction(other =>
            {
                bool isItem = other.transform.parent.TryGetComponent(out ItemBehaviour item);
                if (!isItem)
                {
                    return;
                }

                if (StoredItemCount < 50)
                {
                    ItemType type = item.CurrentType;
                    int typeCount = StoredItems.GetValueOrDefault(type);

                    item.TriggerDestruction(false);
                    StoredItems[type] = typeCount + 1;
                    StoredItemCount++;
                }
            }, TriggerType.Enter);
        }

        private void Update()
        {
            if (!GameStateController.Is(GameState.Simulation))
            {
                StoredItems.Clear();
                return;
            }

            foreach (Recipe recipe in Recipes)
            {
                bool hasAllIngredients = recipe.Ingredients.Aggregate(true,
                    (current, ingredient)
                        => current && StoredItems.ContainsKey(ingredient)
                );

                if (hasAllIngredients)
                {
                    foreach (ItemType ingredient in recipe.Ingredients)
                    {
                        int count = StoredItems[ingredient] - 1;
                        if (count <= 0)
                        {
                            StoredItems.Remove(ingredient);
                        }
                        else
                        {
                            StoredItems[ingredient] = count;
                        }
                    }

                    FruitSpawner.SpawnItem(recipe.Product, OutputLocation.position);
                }
            }
        }
    }
}