StoreUIManager.cs

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class StoreUIManager : MonoBehaviour
{
    static StoreUIManager _instance;
    
    Animator _animator;
    int _isShownAnimParam = Animator.StringToHash("IsShown");
    InventoryTile[] _inventoryTiles = new InventoryTile[20];
    int _currentSelectionIndex;
    
    Text _vendorName;
    Text _itemName;
    Text _itemPrice;
    Text _itemDescription;
    Image _currencyIcon;
    
    void Awake ()
    {
        _instance = this;
        _animator = GetComponent<Animator>();
        
        _vendorName = transform.FindChild("vendor_name").GetComponent<Text>();
        _itemName = transform.FindChild("item_name").GetComponent<Text>();
        _itemPrice = transform.FindChild("item_price").GetComponent<Text>();
        _itemDescription = transform.FindChild("item_description").GetComponent<Text>();
        _currencyIcon = transform.FindChild("currency_icon").GetComponent<Image>();
    }
    
    void Start ()
    {
        Transform grid = transform.FindChild("grid");
        
        for (int i = 0; i < _inventoryTiles.Length; i++)
        {
            InventoryTile newTile = Sync.SpawnLocal("inventory_tile", Vector3.zero).GetComponent<InventoryTile>();
            newTile.transform.SetParent(grid, false);
            _inventoryTiles[i] = newTile;
        }
    }
    
    public static void Show (VendorItemInfo[] itemInfos, string vendorName)
    {
        _instance._animator.SetBool(_instance._isShownAnimParam, true);
        _instance._vendorName.text = vendorName;
        
        for (int i = 0; i < itemInfos.Length; i++)
        {
            InventoryTile tile = _instance._inventoryTiles[i];
            tile.gameObject.SetActive(true);
            
            if (itemInfos[i].Item.Type == "hero")
            {
                HeroItem heroItem = ItemRegistry.GetItem<HeroItem>(itemInfos[i].ItemID);
                
                tile.ItemName = Localizer.GetString(heroItem.DisplayNameID);
                tile.ItemDescription = Localizer.GetString(heroItem.DescriptionID);
                tile.ItemPrice = itemInfos[i].Price;
                tile.ResetRotationAndScale();
                
                if (heroItem.Slot == "hands")
                {
                    tile.FrontIcon = heroItem.PrimarySprite;
                    tile.BackIcon = heroItem.SecondarySprite;
                }
                else if (heroItem.Slot == "feet")
                {
                    tile.FrontIcon = heroItem.PrimarySprite;
                    tile.BackIcon = heroItem.PrimarySprite;
                }
                else 
                {
                    tile.PrimaryIcon = heroItem.GUISprite;
                }
            }
            
            if (itemInfos[i].Item.Type == "guardian")
            {
                GuardianWeapon weapon = ItemRegistry.GetItem<GuardianWeapon>(itemInfos[i].ItemID);
                
                tile.ItemName = Localizer.GetString(weapon.DisplayNameID);
                tile.ItemDescription = Localizer.GetString(weapon.DescriptionID);
                tile.ItemPrice = itemInfos[i].Price;
                tile.PrimaryIcon = weapon.GUISprite;
                
                // Guardian weapons need to display different than other items so they are rotated and scaled appropriately.
                if (weapon.AttackStyle == GuardianWeaponType.Ranged)
                    tile.RotateAndScale(45, 0.55f);
                else
                    tile.RotateAndScale(-45, 0.55f);
            }
        }
        
        // Deactivate all the unused tiles
        for (int i = itemInfos.Length; i < _instance._inventoryTiles.Length; i++)
        {
            InventoryTile tile = _instance._inventoryTiles[i];
            tile.gameObject.SetActive(false);
        }
    }
    
    public static void UpdateSelectionIndex (int newSelectionIndex, bool isOwned)
    {
        _instance._inventoryTiles[_instance._currentSelectionIndex].SetSelected(false);
        _instance._inventoryTiles[newSelectionIndex].SetSelected(true);
        _instance._currentSelectionIndex = newSelectionIndex;
        
        _instance._itemName.text = _instance._inventoryTiles[newSelectionIndex].ItemName;
        _instance._itemDescription.text = _instance._inventoryTiles[newSelectionIndex].ItemDescription;
        
        if (!isOwned)
        {
            _instance._itemPrice.text = _instance._inventoryTiles[newSelectionIndex].ItemPrice.ToString("N0");
            _instance._currencyIcon.enabled = true; 
        }
        else
        {
            _instance._itemPrice.text = "";
            _instance._currencyIcon.enabled = false;    
        }
    }
    
    public static void BounceSelectedIcon ()
    {
        _instance._inventoryTiles[_instance._currentSelectionIndex].Bounce();
    }
    
    public static void Hide ()
    {
        _instance._animator.SetBool(_instance._isShownAnimParam, false);
        
        for (int i = 0; i < _instance._inventoryTiles.Length; i++)
        {
            InventoryTile tile = _instance._inventoryTiles[i];
            tile.SetSelected(false);
        }
    }
}