Stickers: added some code

Stickers/Stickers/StickerSystem.Main.cs

@@ -0,0 +1,71 @@
+using ABI_RC.Core.UI;
+using ABI_RC.Systems.GameEventSystem;
+using NAK.Stickers.Utilities;
+using UnityEngine;
+
+namespace NAK.Stickers;
+
+public partial class StickerSystem
+{
+    #region Singleton
+
+    public static StickerSystem Instance { get; private set; }
+
+    public static void Initialize()
+    {
+        if (Instance != null)
+            return;
+        
+        Instance = new StickerSystem();
+        
+        // configure decalery
+        DecalManager.SetPreferredMode(DecalUtils.Mode.GPU, false, 0);
+        
+        // ensure cache folder exists
+        if (!Directory.Exists(s_StickersFolderPath)) Directory.CreateDirectory(s_StickersFolderPath);
+        
+        // listen for game events
+        CVRGameEventSystem.Initialization.OnPlayerSetupStart.AddListener(Instance.OnPlayerSetupStart);
+    }
+    
+    #endregion Singleton
+
+    #region Data
+
+    private int _selectedStickerSlot;
+    public int SelectedStickerSlot
+    {
+        get => _selectedStickerSlot;
+        set
+        {
+            _selectedStickerSlot = Mathf.Clamp(value, 0, ModSettings.MaxStickerSlots - 1);
+            IsInStickerMode = IsInStickerMode; // refresh sticker mode
+        }
+    }
+    
+    private bool _isInStickerMode;
+    public bool IsInStickerMode 
+    {
+        get => _isInStickerMode;
+        set
+        {
+            _isInStickerMode = value;
+            if (_isInStickerMode) CohtmlHud.Instance.SelectPropToSpawn(
+                StickerCache.GetCohtmlResourcesPath(SelectedStickerName),
+                Path.GetFileNameWithoutExtension(SelectedStickerName), 
+                "Sticker selected for stickering:");
+            else CohtmlHud.Instance.ClearPropToSpawn();
+        }
+    }
+
+    private string SelectedStickerName => ModSettings.Hidden_SelectedStickerNames.Value[_selectedStickerSlot];
+
+    private const float StickerKillTime = 30f;
+    private const float StickerCooldown = 0.2f;
+    private readonly Dictionary<string, StickerData> _playerStickers = new();
+    private const string PlayerLocalId = "_PLAYERLOCAL";
+    
+    private readonly List<StickerData> _deadStickerPool = new(); // for cleanup on player leave
+
+    #endregion Data
+}