using System;
using System.Collections.Generic;
using System.Linq;
using Godot;
using Godot.Collections;
using UI.MapEditorTools;

namespace UI.MapEditor;

public partial class EditorTileMap : TileMap, IUiNodeScript
{
    
    public enum TileMapDrawMode
    {
        /// <summary>
        /// 无状态
        /// </summary>
        None,
        /// <summary>
        /// 自由绘制
        /// </summary>
        Free,
        /// <summary>
        /// 地形绘制
        /// </summary>
        Terrain,
        /// <summary>
        /// 组合绘制
        /// </summary>
        Combination
    }
    
    /// <summary>
    /// 输入事件
    /// </summary>
    public event Action<InputEvent> MapInputEvent;

    /// <summary>
    /// 绘制工具事件
    /// </summary>
    public event Action<CanvasItem> MapDrawToolEvent;

    /// <summary>
    /// 所属地图编辑器UI
    /// </summary>
    public MapEditorPanel MapEditorPanel { get; private set; }
    
    /// <summary>
    /// 编辑器工具UI
    /// </summary>
    public MapEditorToolsPanel MapEditorToolsPanel { get; set; }

    /// <summary>
    /// 当前选中的工具
    /// </summary>
    public EditorToolEnum ActiveToolType => MapEditorToolsPanel.ActiveToolType;
    
    //鼠标中建是否按下
    private bool _isMiddlePressed = false;
    private Vector2 _moveOffset;
    
    //负责存储自动图块数据
    private InfiniteGrid<bool> _autoCellLayerGrid = new InfiniteGrid<bool>();
    //停止绘制多久后开始执行生成操作
    private float _generateInterval = 3f;
    //生成自动图块和导航网格的计时器
    private float _generateTimer = -1;
    //检测地形结果
    private bool _checkTerrainFlag = true;
    //错误地形位置
    private Vector2I _checkTerrainErrorPosition = Vector2I.Zero;
    //是否执行生成地形成功
    private bool _isGenerateTerrain = true;
    //导航网格数据
    private Vector2[][] _polygonData;
    private bool _initLayer = false;

    //--------- 配置数据 -------------
    private int _mainSource = 0;
    private int _mainTerrainSet = 0;
    private int _mainTerrain = 0;
    private AutoTileConfig _autoTileConfig;

    /// <summary>
    /// 正在编辑的房间数据
    /// </summary>
    public DungeonRoomSplit CurrRoomSplit;
    
    /// <summary>
    /// 数据是否脏了, 也就是是否有修改
    /// </summary>
    public bool IsDirty { get; private set; }

    /// <summary>
    /// 地图是否有绘制错误
    /// </summary>
    public bool HasTerrainError => !_isGenerateTerrain;
    
    /// <summary>
    /// 当前选择的图层
    /// </summary>
    public TileMapLayerData CurrLayer { get; private set; }
    
    /// <summary>
    /// 当前正在使用的 TileSetSplit 数据
    /// </summary>
    public TileSetSplit CurrentTileSet { get; private set; }
    
    /// <summary>
    /// 当前正在使用的 Source
    /// </summary>
    public TileSetSourceInfo CurrSource => CurrentTileSet.TileSetInfo.Sources[CurrSourceIndex];

    /// <summary>
    /// 当前正在使用的 Source 索引
    /// </summary>
    public int CurrSourceIndex { get; private set; }
    
    /// <summary>
    /// 当前笔刷类型
    /// </summary>
    public TileMapDrawMode CurrBrushType { get; private set; }

    /// <summary>
    /// 当前笔刷使用的 AtlasCoords,, key: position, value: atlasCoords, 单位: 格
    /// </summary>
    public System.Collections.Generic.Dictionary<Vector2I, Vector2I> CurrBrush { get; } = new System.Collections.Generic.Dictionary<Vector2I, Vector2I>();
    
    /// <summary>
    /// 当前地形
    /// </summary>
    public TerrainData CurrTerrain { get; private set; }
    
    /// <summary>
    /// 当前笔刷使用的纹理
    /// </summary>
    public Texture2D CurrBrushTexture { get; private set; }

    /// <summary>
    /// 笔刷起始x坐标, 单位: 格
    /// </summary>
    public int BrushStartX { get; private set; } = 0;
    /// <summary>
    /// 笔刷起始y坐标, 单位: 格
    /// </summary>
    public int BrushStartY { get; private set; } = 0;
    /// <summary>
    /// 笔刷宽度, 单位: 格
    /// </summary>
    public int BrushWidth { get; private set; } = 0;
    /// <summary>
    /// 笔刷高度, 单位: 格
    /// </summary>
    public int BrushHeight { get; private set; } = 0;
    /// <summary>
    /// 笔刷偏移, 单位: 格
    /// </summary>
    public Vector2I BrushOffset { get; private set; } = Vector2I.Zero;
    //淡化其它层级
    private bool _desaltOtherLayer = false;
    
    //--------------------------------------- 变动过的数据 ---------------------------------------
    
    /// <summary>
    /// 地图位置, 单位: 格
    /// </summary>
    public Vector2I CurrRoomPosition { get; private set; }
    /// <summary>
    /// 当前地图大小, 单位: 格
    /// </summary>
    public Vector2I CurrRoomSize { get; private set; }
    /// <summary>
    /// 当前编辑的门数据
    /// </summary>
    public List<DoorAreaInfo> CurrDoorConfigs { get; } = new List<DoorAreaInfo>();

    /// <summary>
    /// 是否绘制房间中的辅助标记
    /// </summary>
    public bool IsDrawMark { get; set; } = true;

    //-------------------------------
    private MapEditor.TileMap _editorTileMap;
    private EventFactory _eventFactory;
    private Vector2I _cacheToolSizeData;
    
    public void SetUiNode(IUiNode uiNode)
    {
        _editorTileMap = (MapEditor.TileMap)uiNode;
        MapEditorPanel = _editorTileMap.UiPanel;
        MapEditorToolsPanel = _editorTileMap.UiPanel.S_MapEditorTools.Instance;

        _editorTileMap.L_Brush.Instance.Draw += DrawGuides;
        _eventFactory = EventManager.CreateEventFactory();
        _eventFactory.AddEventListener(EventEnum.OnTileMapDirty, OnEditorDirty);

        RenderingServer.FramePostDraw += OnFramePostDraw;
        var navigationRegion = _editorTileMap.L_NavigationRegion.Instance;
        navigationRegion.Visible = false;
        navigationRegion.NavigationPolygon.AgentRadius = GameConfig.NavigationAgentRadius;
        navigationRegion.BakeFinished += OnBakeFinished;
    }

    public void OnDestroy()
    {
        _eventFactory.RemoveAllEventListener();
        RenderingServer.FramePostDraw -= OnFramePostDraw;
    }

    public override void _Process(double delta)
    {
        if (!_initLayer)
        {
            return;
        }
        //触发绘制辅助线
        _editorTileMap.L_Brush.Instance.QueueRedraw();
        
        var newDelta = (float)delta;

        if (!MapEditorToolsPanel.S_HBoxContainer.Instance.IsMouseInRect()) //不在Ui节点上
        {
            if (_isMiddlePressed) //中键移动
            {
                SetMapPosition(GetGlobalMousePosition() + _moveOffset);
            }
        }

        //绘制停止指定时间后, 生成导航网格
        if (_generateTimer > 0)
        {
            _generateTimer -= newDelta;
            if (_generateTimer <= 0)
            {
                //检测地形
                RunCheckHandler();
            }
        }
    }

    /// <summary>
    /// 绘制辅助线
    /// </summary>
    public void DrawGuides()
    {
        if (_hasPreviewImage)
        {
            return;
        }
        CanvasItem canvasItem = _editorTileMap.L_Brush.Instance;
        //轴线
        canvasItem.DrawLine(new Vector2(0, 2000), new Vector2(0, -2000), Colors.Green);
        canvasItem.DrawLine(new Vector2(2000, 0), new Vector2( -2000, 0), Colors.Red);

        if (IsDrawMark)
        {
            //绘制房间区域
            if (CurrRoomSize.X != 0 && CurrRoomSize.Y != 0)
            {
                canvasItem.DrawRect(
                    new Rect2(
                        (CurrRoomPosition + new Vector2I(1, 2)) * GameConfig.TileCellSize,
                        (CurrRoomSize - new Vector2I(2, 3)) * GameConfig.TileCellSize
                    ),
                    Colors.Aqua, false, 5f / Scale.X
                );
            }

            //绘制导航网格
            if (_checkTerrainFlag && _isGenerateTerrain && _polygonData != null)
            {
                foreach (var vector2s in _polygonData)
                {
                    canvasItem.DrawPolygon(vector2s, new Color(0,1,1, 0.3f).MakeArray(vector2s.Length));
                }
            }
        }

        if (MapDrawToolEvent != null)
        {
            MapDrawToolEvent(canvasItem);
        }
    }

    public override void _Input(InputEvent @event)
    {
        if (@event is InputEventMouseButton mouseButton)
        {
            if (mouseButton.ButtonIndex == MouseButton.WheelDown)
            {
                //缩小
                Shrink();
            }
            else if (mouseButton.ButtonIndex == MouseButton.WheelUp)
            {
                //放大
                Magnify();
            }
            else if (mouseButton.ButtonIndex == MouseButton.Middle)
            {
                _isMiddlePressed = mouseButton.Pressed;
                if (_isMiddlePressed)
                {
                    _moveOffset = Position - GetGlobalMousePosition();
                }
            }
        }

        if (MapInputEvent != null && !MapEditorToolsPanel.S_HBoxContainer.Instance.IsMouseInRect())
        {
            MapInputEvent(@event);
        }
    }

    /// <summary>
    /// 设置选择的layer
    /// </summary>
    public void SetCurrLayer(TileMapLayerData layerData)
    {
        CurrLayer = layerData;
        EventManager.EmitEvent(EventEnum.OnSelectTileLayer, layerData.Layer);
        SetLayerModulate(MapLayer.AutoFloorLayer, GetEditorLayerModulate(MapLayer.AutoFloorLayer));
        SetLayerModulate(MapLayer.AutoMiddleLayer, GetEditorLayerModulate(MapLayer.AutoMiddleLayer));
        SetLayerModulate(MapLayer.AutoTopLayer, GetEditorLayerModulate(MapLayer.AutoTopLayer));
        SetLayerModulate(MapLayer.CustomFloorLayer1, GetEditorLayerModulate(MapLayer.CustomFloorLayer1));
        SetLayerModulate(MapLayer.CustomFloorLayer2, GetEditorLayerModulate(MapLayer.CustomFloorLayer2));
        SetLayerModulate(MapLayer.CustomFloorLayer3, GetEditorLayerModulate(MapLayer.CustomFloorLayer3));
        SetLayerModulate(MapLayer.CustomMiddleLayer1, GetEditorLayerModulate(MapLayer.CustomMiddleLayer1));
        SetLayerModulate(MapLayer.CustomMiddleLayer2, GetEditorLayerModulate(MapLayer.CustomMiddleLayer2));
        SetLayerModulate(MapLayer.CustomTopLayer, GetEditorLayerModulate(MapLayer.CustomTopLayer));
    }

    /// <summary>
    /// 设置选中的 Source 索引
    /// </summary>
    public void SetCurrSourceIndex(int index)
    {
        CurrSourceIndex = index;
    }

    /// <summary>
    /// 设置当前笔刷类型
    /// </summary>
    public void SetCurrBrushType(TileMapDrawMode mode)
    {
        CurrBrushType = mode;
    }

    /// <summary>
    /// 添加笔刷绘制的数据, 单位: 格
    /// </summary>
    public void AddCurrBrushAtlasCoords(Vector2I pos, Vector2I atlasCoords)
    {
        if (!CurrBrush.ContainsKey(pos))
        {
            CurrBrush.Add(pos, atlasCoords);
            var xStart = int.MaxValue;
            var xEnd = int.MinValue;
            var yStart = int.MaxValue;
            var yEnd = int.MinValue;

            //计算起始点和终点
            foreach (var kv in CurrBrush)
            {
                var cell = kv.Key;
                xStart = Mathf.Min(cell.X, xStart);
                yStart = Mathf.Min(cell.Y, yStart);
                xEnd = Mathf.Max(cell.X, xEnd);
                yEnd = Mathf.Max(cell.Y, yEnd);
            }

            BrushStartX = xStart;
            BrushStartY = yStart;
            BrushWidth = xEnd - xStart + 1;
            BrushHeight = yEnd - yStart + 1;
            BrushOffset = new Vector2I(-(xStart + (xEnd - xStart) / 2), -(yStart + (yEnd - yStart) / 2));
        }
    }
    
    /// <summary>
    /// 移除笔刷绘制的数据, 单位: 格
    /// </summary>
    public void RemoveCurrBrushAtlasCoords(Vector2I pos)
    {
        CurrBrush.Remove(pos);
    }
    
    /// <summary>
    /// 清除笔刷
    /// </summary>
    public void ClearCurrBrushAtlasCoords()
    {
        CurrBrush.Clear();
    }

    /// <summary>
    /// 设置笔刷使用的纹理
    /// </summary>
    public void SetCurrBrushTexture(Texture2D texture)
    {
        CurrBrushTexture = texture;
    }

    /// <summary>
    /// 设置选中某个图层时是否淡化其他图层
    /// </summary>
    public void SetDesaltOtherLayer(bool flag)
    {
        _desaltOtherLayer = flag;
        SetCurrLayer(CurrLayer);
    }

    /// <summary>
    /// 尝试运行检查, 如果已经运行过了, 则没有效果
    /// </summary>
    public void TryRunCheckHandler()
    {
        if (_generateTimer > 0)
        {
            _generateTimer = -1;
            RunCheckHandler();
        }
    }

    /// <summary>
    /// 设置当前地形
    /// </summary>
    public void SetCurrTerrain(TerrainData terrainData)
    {
        CurrBrushType = TileMapDrawMode.Terrain;
        CurrTerrain = terrainData;
    }
    
    //执行检测地形操作
    private void RunCheckHandler()
    {
        _isGenerateTerrain = false;
        //计算区域
        CalcTileRect(false);
        Debug.Log("开始检测是否可以生成地形...");
        if (CheckTerrain())
        {
            Debug.Log("开始绘制自动贴图...");
            var rect = TileMapUtils.GenerateTerrain(this, _editorTileMap.L_NavigationRegion.Instance, _autoTileConfig);
            CurrRoomPosition = rect.Position;
            SetMapSize(rect.Size, true);
            //GenerateTerrain();
            _isGenerateTerrain = true;
        }
        else
        {
            SetErrorCell(_checkTerrainErrorPosition);
        }
    }

    //将指定自动地形层数据存入list中
    private void PushAutoLayerDataToList(int layer, List<int> list)
    {
        const int sourceId = 0; //这里指定0是因为 Main Source 的 id 为 0
        var layerArray = GetUsedCellsById(layer, sourceId);
        foreach (var pos in layerArray)
        {
            var atlasCoords = GetCellAtlasCoords(layer, pos);
            var tileCellData = _autoTileConfig.GetCellData(atlasCoords);
            if (tileCellData != null)
            {
                list.Add(pos.X);
                list.Add(pos.Y);
                list.Add((int)tileCellData.TerrainPeering);
                list.Add(tileCellData.TerrainType);
            }
        }
    }
    
    //将指定层数据存入list中
    private void PushLayerDataToList(int layer, List<int> list)
    {
        var layerArray = GetUsedCellsById(layer);
        foreach (var pos in layerArray)
        {
            var atlasCoords = GetCellAtlasCoords(layer, pos);
            list.Add(pos.X);
            list.Add(pos.Y);
            list.Add(GetCellSourceId(layer, pos));
            list.Add(atlasCoords.X);
            list.Add(atlasCoords.Y);
        }
    }

    //设置自动地形层的数据
    private void SetAutoLayerDataFromList(int layer, List<int> list)
    {
        var terrainInfo = _autoTileConfig.TerrainInfo;
        var sourceId = _autoTileConfig.SourceId;
        for (var i = 0; i < list.Count; i += 4)
        {
            var pos = new Vector2I(list[i], list[i + 1]);
            var bit = (uint)list[i + 2];
            var type = (byte)list[i + 3];
            var index = terrainInfo.TerrainBitToIndex(bit, type);
            var terrainCell = terrainInfo.GetTerrainCell(index, type);
            var atlasCoords = terrainInfo.GetPosition(terrainCell);
            SetCell(layer, pos, sourceId, atlasCoords);
            if (layer == MapLayer.AutoFloorLayer)
            {
                _autoCellLayerGrid.Set(pos, true);
            }
        }
    }
    
    //设置自定义层的数据
    private void SetCustomLayerDataFromList(int layer, List<int> list)
    {
        //五个一组
        for (var i = 0; i < list.Count; i += 5)
        {
            var pos = new Vector2I(list[i], list[i + 1]);
            var sourceId = list[i + 2];
            var atlasCoords = new Vector2I(list[i + 3], list[i + 4]);
            SetCell(layer, pos, sourceId, atlasCoords);
        }
    }

    /// <summary>
    /// 触发保存地图数据
    /// </summary>
    public void TriggerSave(RoomErrorType errorType, Action finish)
    {
        Debug.Log("保存地牢房间数据...");
        //执行创建预览图流程
        RunSavePreviewImage(() =>
        {
            //执行保存数据流程
            CurrRoomSplit.ErrorType = errorType;
            SaveRoomInfoConfig();
            SaveTileInfoConfig();
            SavePreinstallConfig();
            IsDirty = false;
            MapEditorPanel.SetTitleDirty(false);
            //派发保存事件
            EventManager.EmitEvent(EventEnum.OnTileMapSave);
            if (finish != null)
            {
                finish();
            }
        });
    }

    /// <summary>
    /// 加载地牢, 返回是否加载成功
    /// </summary>
    public bool Load(DungeonRoomSplit roomSplit, TileSetSplit tileSetSplit)
    {
        InitTileSet(tileSetSplit);
        
        //重新加载数据
        roomSplit.ReloadRoomInfo();
        roomSplit.ReloadTileInfo();
        roomSplit.ReloadPreinstall();
        
        CurrRoomSplit = roomSplit;
        var roomInfo = roomSplit.RoomInfo;
        var tileInfo = roomSplit.TileInfo;

        CurrRoomPosition = roomInfo.Position.AsVector2I();
        SetMapSize(roomInfo.Size.AsVector2I(), true);
        CurrDoorConfigs.Clear();
        foreach (var doorAreaInfo in roomInfo.DoorAreaInfos)
        {
            CurrDoorConfigs.Add(doorAreaInfo.Clone());
        }
        
        //读取地块数据
        SetAutoLayerDataFromList(MapLayer.AutoFloorLayer, tileInfo.Floor);
        SetCustomLayerDataFromList(MapLayer.CustomFloorLayer1, tileInfo.CustomFloor1);
        SetCustomLayerDataFromList(MapLayer.CustomFloorLayer2, tileInfo.CustomFloor2);
        SetCustomLayerDataFromList(MapLayer.CustomFloorLayer3, tileInfo.CustomFloor3);
        SetCustomLayerDataFromList(MapLayer.CustomMiddleLayer1, tileInfo.CustomMiddle1);
        SetCustomLayerDataFromList(MapLayer.CustomMiddleLayer2, tileInfo.CustomMiddle2);
        SetCustomLayerDataFromList(MapLayer.CustomTopLayer, tileInfo.CustomTop);
        
        //加载门编辑区域
        foreach (var doorAreaInfo in CurrDoorConfigs)
        {
            MapEditorToolsPanel.CreateDoorTool(doorAreaInfo);
        }
        
        //执行生成墙壁和导航网格
        RunCheckHandler();
        
        //聚焦 (需要延时一帧调用)
        this.CallDelayInNode(0, OnFocusClick);
        return true;
    }
    
    /// <summary>
    /// 初始化图块集。
    /// </summary>
    /// <param name="tileSetSplit">要初始化的图块集</param>
    private void InitTileSet(TileSetSplit tileSetSplit)
    {
        CurrentTileSet = tileSetSplit;
        TileSet = tileSetSplit.GetTileSet();

        // 创建AutoTileConfig对象
        // 使用第一个图块集源作为参数
        _autoTileConfig = new AutoTileConfig(0, tileSetSplit.TileSetInfo.Sources[0].Terrain[0]);
    }

    /// <summary>
    /// 初始化层数据
    /// </summary>
    public void InitLayer()
    {
        if (_initLayer)
        {
            return;
        }

        _initLayer = true;
        //初始化层级数据
        MapLayerManager.InitMapLayer(this);
    }

    //缩小
    private void Shrink()
    {
        var pos = GetLocalMousePosition();
        var scale = Scale / 1.1f;
        if (scale.LengthSquared() >= 0.5f)
        {
            Scale = scale;
            SetMapPosition(Position + pos * 0.1f * scale);
        }
    }
    //放大
    private void Magnify()
    {
        var pos = GetLocalMousePosition();
        var prevScale = Scale;
        var scale = prevScale * 1.1f;
        if (scale.LengthSquared() <= 2000)
        {
            Scale = scale;
            SetMapPosition(Position - pos * 0.1f * prevScale);
        }
    }

    /// <summary>
    /// 绘制单个贴图
    /// </summary>
    public void SetSingleCell(Vector2I position)
    {
        if (CurrLayer.Layer == MapLayer.AutoFloorLayer) //选择自动地板层, 那么不管笔刷类型, 通通使用 Main Source 中的 Main Terrain
        {
            var tileCellData = _autoTileConfig.Floor;
            SetCell(MapLayer.AutoFloorLayer, position, tileCellData.SourceId, tileCellData.AutoTileCoords);
            if (!_autoCellLayerGrid.Contains(position.X, position.Y))
            {
                ResetGenerateTimer();
                _autoCellLayerGrid.Set(position.X, position.Y, true);
            }
        }
        else //自定义层
        {
            var dirty = false;
            if (CurrBrushType == TileMapDrawMode.Free || CurrBrushType == TileMapDrawMode.Combination) //自由绘制 或者 组合
            {
                foreach (var item in CurrBrush)
                {
                    SetCell(CurrLayer.Layer, position + item.Key + BrushOffset, CurrSourceIndex, item.Value);
                    dirty = true;
                }
            }
            else if (CurrBrushType == TileMapDrawMode.Terrain) //绘制地形
            {
                if (CurrTerrain == null || !CurrTerrain.TerrainInfo.Ready) //未选择地形或者存在错误就不绘制了
                {
                    return;
                }
                if (CurrTerrain.TerrainInfo.TerrainType == 0) //3x3地形
                {
                    //绘制自动图块
                    SetCellsTerrainConnect(CurrLayer.Layer, new Array<Vector2I>() { position }, CurrTerrain.TerrainSetIndex, 0);
                    dirty = true;
                }
                else if (CurrTerrain.TerrainInfo.TerrainType == 1) //2x2地形
                {
                    var arr = new Array<Vector2I>()
                    {
                        position,
                        position + new Vector2I(0, 1),
                        position + new Vector2I(1, 1),
                        position + new Vector2I(1, 0),
                    };
                    //绘制自动图块
                    SetCellsTerrainConnect(CurrLayer.Layer, arr, CurrTerrain.TerrainSetIndex, 0, false);
                    dirty = true;
                }
            }

            if (dirty)
            {
                //标记有修改数据
                EventManager.EmitEvent(EventEnum.OnTileMapDirty);
            }
        }
    }
    
    /// <summary>
    /// 绘制区域贴图
    /// </summary>
    public void SetRectCell(Vector2I start, Vector2I end)
    {
        if (start.X > end.X)
        {
            var temp = end.X;
            end.X = start.X;
            start.X = temp;
        }
        if (start.Y > end.Y)
        {
            var temp = end.Y;
            end.Y = start.Y;
            start.Y = temp;
        }

        var width = end.X - start.X + 1;
        var height = end.Y - start.Y + 1;
        
        if (CurrLayer.Layer == MapLayer.AutoFloorLayer) //选择自动地板层, 那么不管笔刷类型, 通通使用 Main Source 中的 Main Terrain
        {
            ResetGenerateTimer();
            for (var i = 0; i < width; i++)
            {
                for (var j = 0; j < height; j++)
                {
                    var tileCellData = _autoTileConfig.Floor;
                    SetCell(MapLayer.AutoFloorLayer, new Vector2I(start.X + i, start.Y + j), tileCellData.SourceId, tileCellData.AutoTileCoords);
                }
            }

            _autoCellLayerGrid.SetRect(start, new Vector2I(width, height), true);
        }
        else //自定义层
        {
            var dirty = false;
            if (CurrBrushType == TileMapDrawMode.Free || CurrBrushType == TileMapDrawMode.Combination) //自由绘制 或者 组合
            {
                if (BrushWidth == 0 || BrushHeight == 0)
                {
                    return;
                }

                dirty = CurrBrush.Count > 0;
                for (var i = 0; i < width; i++)
                {
                    for (var j = 0; j < height; j++)
                    {
                        var x = i % BrushWidth + BrushStartX;
                        var y = j % BrushHeight + BrushStartY;
                        if (CurrBrush.TryGetValue(new Vector2I(x, y), out var v))
                        {
                            SetCell(CurrLayer.Layer, new Vector2I(start.X + i, start.Y + j), CurrSourceIndex, v);
                        }
                    }
                }
            }
            else if (CurrBrushType == TileMapDrawMode.Terrain) //绘制地形
            {
                if (CurrTerrain == null || !CurrTerrain.TerrainInfo.Ready) //未选择地形或者存在错误就不绘制了
                {
                    return;
                }
                
                var arr = new Array<Vector2I>();
                for (var i = 0; i < width; i++)
                {
                    for (var j = 0; j < height; j++)
                    {
                        arr.Add(new Vector2I(start.X + i, start.Y + j));
                    }
                }
                
                if (CurrTerrain.TerrainInfo.TerrainType == 0) //3x3地形
                {
                    SetCellsTerrainConnect(CurrLayer.Layer, arr, CurrTerrain.TerrainSetIndex, 0);
                }
                else if (CurrTerrain.TerrainInfo.TerrainType == 1) //2x2地形
                {
                    SetCellsTerrainConnect(CurrLayer.Layer, arr, CurrTerrain.TerrainSetIndex, 0, false);
                }
                dirty = true;
            }

            if (dirty)
            {
                //标记有修改数据
                EventManager.EmitEvent(EventEnum.OnTileMapDirty);
            }
        }
    }

    /// <summary>
    /// 擦除单个图块
    /// </summary>
    public void EraseSingleCell(Vector2I position)
    {
        if (CurrLayer.Layer == MapLayer.AutoFloorLayer) //选择自动地板层, 那么不管笔刷类型, 通通使用 Main Source 中的 Main Terrain
        {
            EraseCell(MapLayer.AutoFloorLayer, position);
            if (_autoCellLayerGrid.Remove(position.X, position.Y))
            {
                ResetGenerateTimer();
            }
        }
        else //自定义层
        {
            if (CurrBrushType == TileMapDrawMode.Free || CurrBrushType == TileMapDrawMode.Combination) //自由绘制 或者 组合
            {
                EraseCell(CurrLayer.Layer, position);
            }
            else //绘制地形
            {
                if (CurrTerrain == null) //未选择地形
                {
                    EraseCell(CurrLayer.Layer, position);
                }
                else if (CurrTerrain.TerrainInfo.TerrainType == 0 || CurrTerrain.TerrainInfo.TerrainType == 1) //2x2地形 / 3x3地形
                {
                    EraseCell(CurrLayer.Layer, position);
                    
                    var arr = new Array<Vector2I>();
                    //这里需要判断周围8格是否是同terrainSet
                    if (EqualsTerrainSet(position + new Vector2I(-1, -1)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(-1, -1));
                        arr.Add(position + new Vector2I(-1, -1));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(0, -1)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(0, -1));
                        arr.Add(position + new Vector2I(0, -1));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(1, -1)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(1, -1));
                        arr.Add(position + new Vector2I(1, -1));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(-1, 0)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(-1, 0));
                        arr.Add(position + new Vector2I(-1, 0));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(1, 0)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(1, 0));
                        arr.Add(position + new Vector2I(1, 0));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(-1, 1)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(-1, 1));
                        arr.Add(position + new Vector2I(-1, 1));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(0, 1)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(0, 1));
                        arr.Add(position + new Vector2I(0, 1));
                    }

                    if (EqualsTerrainSet(position + new Vector2I(1, 1)))
                    {
                        EraseCell(CurrLayer.Layer, position + new Vector2I(1, 1));
                        arr.Add(position + new Vector2I(1, 1));
                    }
                    
                    SetCellsTerrainConnect(CurrLayer.Layer, arr, CurrTerrain.TerrainSetIndex, 0, false);
                }
            }
            //标记有修改数据
            EventManager.EmitEvent(EventEnum.OnTileMapDirty);
        }
    }
    
    /// <summary>
    /// 擦除一个区域内的贴图
    /// </summary>
    public void EraseRectCell(Vector2I start, Vector2I end)
    {
        if (start.X > end.X)
        {
            var temp = end.X;
            end.X = start.X;
            start.X = temp;
        }
        if (start.Y > end.Y)
        {
            var temp = end.Y;
            end.Y = start.Y;
            start.Y = temp;
        }

        var width = end.X - start.X + 1;
        var height = end.Y - start.Y + 1;
        
        if (CurrLayer.Layer == MapLayer.AutoFloorLayer) //选择自动地板层
        {
            ResetGenerateTimer();
            for (var i = 0; i < width; i++)
            {
                for (var j = 0; j < height; j++)
                {
                    EraseCell(MapLayer.AutoFloorLayer, new Vector2I(start.X + i, start.Y + j));
                }
            }
            _autoCellLayerGrid.RemoveRect(start, new Vector2I(width, height));
        }
        else //自定义层
        {
            if (CurrBrushType == TileMapDrawMode.Free || CurrBrushType == TileMapDrawMode.Combination ||
                (CurrBrushType == TileMapDrawMode.Terrain && CurrTerrain == null)) //自由绘制 或者 组合 或者 未选择地形
            {
                for (var i = 0; i < width; i++)
                {
                    for (var j = 0; j < height; j++)
                    {
                        EraseCell(CurrLayer.Layer, new Vector2I(start.X + i, start.Y + j));
                    }
                }
            }
            else if (CurrBrushType == TileMapDrawMode.Terrain) //绘制地形
            {
                var arr = new Array<Vector2I>();
                //需要检测矩形向外一格的Cell
                for (var i = -1; i < width + 1; i++)
                {
                    for (var j = -1; j < height + 1; j++)
                    {
                        var pos = new Vector2I(start.X + i, start.Y + j);
                        if (i >= 0 && i < width && j >= 0 && j < height)
                        {
                            EraseCell(CurrLayer.Layer, pos);
                        }
                        else if (EqualsTerrainSet(pos))
                        {
                            EraseCell(CurrLayer.Layer, pos);
                            arr.Add(pos);
                        }
                    }
                }
                
                SetCellsTerrainConnect(CurrLayer.Layer, arr, CurrTerrain.TerrainSetIndex, 0, false);
            }
            
            //标记有修改数据
            EventManager.EmitEvent(EventEnum.OnTileMapDirty);
        }
    }

    //重置计时器
    private void ResetGenerateTimer()
    {
        _generateTimer = _generateInterval;
        _isGenerateTerrain = false;
        ClearLayer(MapLayer.AutoTopLayer);
        ClearLayer(MapLayer.AutoMiddleLayer);
        CloseErrorCell();
        //标记有修改数据
        EventManager.EmitEvent(EventEnum.OnTileMapDirty);
    }

    //重新计算房间区域
    private void CalcTileRect(bool refreshDoorTrans)
    {
        var rect = _autoCellLayerGrid.GetRect();
        CurrRoomPosition = rect.Position - new Vector2I(2, 3);
        SetMapSize(rect.Size + new Vector2I(4, 5), refreshDoorTrans);
        // CurrRoomPosition = rect.Position - new Vector2I(2, 4);
        // SetMapSize(rect.Size + new Vector2I(4, 6), refreshDoorTrans);
    }
    
    //检测是否有不合规的图块, 返回true表示图块正常
    private bool CheckTerrain()
    {
        _checkTerrainFlag = true;   
        _autoCellLayerGrid.ForEach((x, y, flag) =>
        {
            if (flag)
            {
                if (!_autoCellLayerGrid.Contains(x, y + 1) &&
                    (_autoCellLayerGrid.Contains(x, y + 2) || _autoCellLayerGrid.Contains(x, y + 3)))
                {
                    _checkTerrainFlag = false;
                    _checkTerrainErrorPosition = new Vector2I(x, y + 1);
                    return false;
                }
            }

            return true;
        });
        return _checkTerrainFlag;
    }

    //设置显示的错误cell, 会标记上红色的闪烁动画
    private void SetErrorCell(Vector2I pos)
    {
        MapEditorPanel.S_ErrorCell.Instance.Position = pos * GameConfig.TileCellSize;
        MapEditorPanel.S_ErrorCellAnimationPlayer.Instance.Play(AnimatorNames.Show);
    }

    //关闭显示的错误cell
    private void CloseErrorCell()
    {
        MapEditorPanel.S_ErrorCellAnimationPlayer.Instance.Stop();
    }
    
    /// <summary>
    /// 聚焦
    /// </summary>
    public void OnFocusClick()
    {
        var pos = MapEditorPanel.S_SubViewport.Instance.Size / 2;
        if (CurrRoomSize.X == 0 && CurrRoomSize.Y == 0) //聚焦原点
        {
            SetMapPosition(pos);
        }
        else //聚焦地图中心点
        {
            var roomPos = new Vector2(CurrRoomPosition.X, CurrRoomPosition.Y - 1);
            var roomSize = new Vector2(CurrRoomSize.X, CurrRoomSize.Y + 1);
            SetMapPosition(pos - (roomPos + roomSize / 2) * TileSet.TileSize * Scale);
        }
    }
    
    //房间数据有修改
    private void OnEditorDirty(object obj)
    {
        IsDirty = true;
        MapEditorPanel.SetTitleDirty(true);
    }

    /// <summary>
    /// 创建地牢房间门区域
    /// </summary>
    /// <param name="direction">门方向</param>
    /// <param name="start">起始坐标, 单位: 像素</param>
    /// <param name="end">结束坐标, 单位: 像素</param>
    public DoorAreaInfo CreateDoorArea(DoorDirection direction, int start, int end)
    {
        var doorAreaInfo = new DoorAreaInfo();
        doorAreaInfo.Direction = direction;
        doorAreaInfo.Start = start;
        doorAreaInfo.End = end;
        //doorAreaInfo.CalcPosition(_roomPosition, _roomSize);
        CurrDoorConfigs.Add(doorAreaInfo);
        return doorAreaInfo;
    }

    /// <summary>
    /// 检测门区域数据是否可以提交
    /// </summary>
    /// <param name="direction">门方向</param>
    /// <param name="start">起始坐标, 单位: 像素</param>
    /// <param name="end">结束坐标, 单位: 像素</param>
    /// <returns></returns>
    public bool CheckDoorArea(DoorDirection direction, int start, int end)
    {
        foreach (var item in CurrDoorConfigs)
        {
            if (item.Direction == direction)
            {
                if (CheckValueCollision(item.Start, item.End, start, end))
                {
                    return false;
                }
            }
        }

        return true;
    }
    
    /// <summary>
    /// 检测门区域数据是否可以提交
    /// </summary>
    /// <param name="target">需要检测的门</param>
    /// <param name="start">起始坐标, 单位: 像素</param>
    /// <param name="end">结束坐标, 单位: 像素</param>
    public bool CheckDoorArea(DoorAreaInfo target, int start, int end)
    {
        foreach (var item in CurrDoorConfigs)
        {
            if (item.Direction == target.Direction && item != target)
            {
                if (CheckValueCollision(item.Start, item.End, start, end))
                {
                    return false;
                }
            }
        }

        return true;
    }
    
    private bool CheckValueCollision(float o1, float o2, float h1, float h2)
    {
        var size = GameConfig.TileCellSize;
        return !(h2 < o1 - 3 * size || o2 + 3 * size < h1);
    }

    /// <summary>
    /// 移除门区域数据
    /// </summary>
    public void RemoveDoorArea(DoorAreaInfo doorAreaInfo)
    {
        CurrDoorConfigs.Remove(doorAreaInfo);
    }
    
    //保存房间配置
    private void SaveRoomInfoConfig()
    {
        //存入本地
        var roomInfo = CurrRoomSplit.RoomInfo;
        
        if (!HasTerrainError) //没有绘制错误
        {
            roomInfo.Size = new SerializeVector2(CurrRoomSize);
            roomInfo.Position = new SerializeVector2(CurrRoomPosition);
        }
        else
        {
            roomInfo.Position = new SerializeVector2(CurrRoomPosition - Vector2I.One);
            roomInfo.Size = new SerializeVector2(CurrRoomSize + new Vector2I(2, 2));
        }

        roomInfo.DoorAreaInfos.Clear();
        roomInfo.DoorAreaInfos.AddRange(CurrDoorConfigs);
        roomInfo.ClearCompletionDoorArea();
        MapProjectManager.SaveRoomInfo(CurrRoomSplit);
    }

    //保存地块数据
    public void SaveTileInfoConfig()
    {
        //存入本地
        var tileInfo = CurrRoomSplit.TileInfo;
        if (tileInfo.NavigationPolygon == null)
        {
            tileInfo.NavigationPolygon = new List<int[]>();
        }
        else
        {
            tileInfo.NavigationPolygon.Clear();
        }
        if (tileInfo.NavigationVertices == null)
        {
            tileInfo.NavigationVertices = new List<SerializeVector2>();
        }
        else
        {
            tileInfo.NavigationVertices.Clear();
        }
        var polygon = _editorTileMap.L_NavigationRegion.Instance.NavigationPolygon;
        tileInfo.NavigationPolygon.AddRange(polygon.Polygons);
        tileInfo.NavigationVertices.AddRange(polygon.Vertices.Select(v => new SerializeVector2(v)));
        tileInfo.Floor.Clear();
        tileInfo.CustomFloor1.Clear();
        tileInfo.CustomFloor2.Clear();
        tileInfo.CustomFloor3.Clear();
        tileInfo.CustomMiddle1.Clear();
        tileInfo.CustomMiddle2.Clear();
        tileInfo.CustomTop.Clear();

        //保存图块数据
        PushAutoLayerDataToList(MapLayer.AutoFloorLayer, tileInfo.Floor);
        PushLayerDataToList(MapLayer.CustomFloorLayer1, tileInfo.CustomFloor1);
        PushLayerDataToList(MapLayer.CustomFloorLayer2, tileInfo.CustomFloor2);
        PushLayerDataToList(MapLayer.CustomFloorLayer3, tileInfo.CustomFloor3);
        PushLayerDataToList(MapLayer.CustomMiddleLayer1, tileInfo.CustomMiddle1);
        PushLayerDataToList(MapLayer.CustomMiddleLayer2, tileInfo.CustomMiddle2);
        PushLayerDataToList(MapLayer.CustomTopLayer, tileInfo.CustomTop);
        
        //---------------------------------------

        MapEditorPanel.S_MapEditorObject.Instance.OnSaveData(tileInfo);
        
        MapProjectManager.SaveRoomTileInfo(CurrRoomSplit);
    }

    /// <summary>
    /// 保存预设数据
    /// </summary>
    public void SavePreinstallConfig()
    {
        //存入本地
        MapProjectManager.SaveRoomPreinstall(CurrRoomSplit);
    }

    /// <summary>
    /// 获取相机中心点坐标
    /// </summary>
    public Vector2I GetCenterPosition()
    {
        var pos = ToLocal(MapEditorPanel.S_SubViewport.Instance.Size / 2);
        return new Vector2I((int)pos.X, (int)pos.Y);
    }
    
    /// <summary>
    /// 设置相机看向的点
    /// </summary>
    public void SetLookPosition(Vector2 pos)
    {
        SetMapPosition(-pos * Scale + MapEditorPanel.S_SubViewport.Instance.Size / 2);
        //SetMapPosition(pos * Scale);
        //SetMapPosition(pos + MapEditorPanel.S_SubViewport.Instance.Size / 2);
    }
    
    /// <summary>
    /// 设置地图坐标
    /// </summary>
    public void SetMapPosition(Vector2 pos)
    {
        Position = pos;
        MapEditorToolsPanel.SetToolTransform(pos, Scale);
    }

    //设置地图大小
    private void SetMapSize(Vector2I size, bool refreshDoorTrans)
    {
        CurrRoomSize = size;
        if (refreshDoorTrans && _cacheToolSizeData != size)
        {
            _cacheToolSizeData = size;
            MapEditorToolsPanel.SetDoorHoverToolTransform(CurrRoomPosition, CurrRoomSize);
        }
    }

    private bool _hasPreviewImage = false;
    private Action _previewFinish;
    private int _previewIndex = 0;
    private Vector2I _tempViewportSize;
    private Vector2 _tempMapPos;
    private Vector2 _tempMapScale;
    private bool _tempAutoFloorLayer;
    private bool _tempCustomFloorLayer1;
    private bool _tempCustomFloorLayer2;
    private bool _tempCustomFloorLayer3;
    private bool _tempAutoMiddleLayer;
    private bool _tempCustomMiddleLayer1;
    private bool _tempCustomMiddleLayer2;
    private bool _tempAutoTopLayer;
    private bool _tempCustomTopLayer;

    private void RunSavePreviewImage(Action action)
    {
        if (_hasPreviewImage)
        {
            return;
        }

        _previewIndex = 0;
        _previewFinish = action;
        _hasPreviewImage = true;
        //先截图, 将图像数据放置到 S_MapView2 节点上
        var subViewport = MapEditorPanel.S_SubViewport.Instance;
        var viewportTexture = subViewport.GetTexture();
        var tex = ImageTexture.CreateFromImage(viewportTexture.GetImage());
        var textureRect = MapEditorPanel.S_MapView2.Instance;
        textureRect.Texture = tex;
        textureRect.Visible = true;
        //调整绘制视图大小
        _tempViewportSize = subViewport.Size;
        subViewport.Size = new Vector2I(GameConfig.PreviewImageSize, GameConfig.PreviewImageSize);
        //调整tileMap
        _tempMapPos = Position;
        _tempMapScale = Scale;
        
        //中心点
        var pos = new Vector2(GameConfig.PreviewImageSize / 2f, GameConfig.PreviewImageSize / 2f);
        if (CurrRoomSize.X == 0 && CurrRoomSize.Y == 0) //聚焦原点
        {
            Position = pos;
        }
        else //聚焦地图中心点
        {
            var tempPos = new Vector2(CurrRoomPosition.X, CurrRoomPosition.Y - 1);
            var tempSize = new Vector2(CurrRoomSize.X, CurrRoomSize.Y + 1);
            //var tempPos = new Vector2(CurrRoomSize.X + 2, CurrRoomSize.Y + 2);
            var mapSize = tempSize * TileSet.TileSize;
            var axis = Mathf.Max(mapSize.X, mapSize.Y);
            var targetScale = GameConfig.PreviewImageSize / axis;
            Scale = new Vector2(targetScale, targetScale);
            Position = pos - (tempPos + tempSize / 2f) * TileSet.TileSize * targetScale;
        }
        
        //隐藏工具栏
        MapEditorToolsPanel.Visible = false;
        //显示所有层级
        _tempAutoFloorLayer = IsLayerEnabled(MapLayer.AutoFloorLayer);
        _tempCustomFloorLayer1 = IsLayerEnabled(MapLayer.CustomFloorLayer1);
        _tempCustomFloorLayer2 = IsLayerEnabled(MapLayer.CustomFloorLayer2);
        _tempCustomFloorLayer3 = IsLayerEnabled(MapLayer.CustomFloorLayer3);
        _tempAutoMiddleLayer = IsLayerEnabled(MapLayer.AutoMiddleLayer);
        _tempCustomMiddleLayer1 = IsLayerEnabled(MapLayer.CustomMiddleLayer1);
        _tempCustomMiddleLayer2 = IsLayerEnabled(MapLayer.CustomMiddleLayer2);
        _tempAutoTopLayer = IsLayerEnabled(MapLayer.AutoTopLayer);
        _tempCustomTopLayer = IsLayerEnabled(MapLayer.CustomTopLayer);

        SetLayerEnabled(MapLayer.AutoFloorLayer, true);
        SetLayerEnabled(MapLayer.CustomFloorLayer1, true);
        SetLayerEnabled(MapLayer.CustomFloorLayer2, true);
        SetLayerEnabled(MapLayer.CustomFloorLayer3, true);
        SetLayerEnabled(MapLayer.AutoMiddleLayer, true);
        SetLayerEnabled(MapLayer.CustomMiddleLayer1, true);
        SetLayerEnabled(MapLayer.CustomMiddleLayer2, true);
        SetLayerEnabled(MapLayer.AutoTopLayer, true);
        SetLayerEnabled(MapLayer.CustomTopLayer, true);
        
        SetLayerModulate(MapLayer.AutoFloorLayer, Colors.White);
        SetLayerModulate(MapLayer.CustomFloorLayer1, Colors.White);
        SetLayerModulate(MapLayer.CustomFloorLayer2, Colors.White);
        SetLayerModulate(MapLayer.CustomFloorLayer3, Colors.White);
        SetLayerModulate(MapLayer.AutoMiddleLayer, Colors.White);
        SetLayerModulate(MapLayer.CustomMiddleLayer1, Colors.White);
        SetLayerModulate(MapLayer.CustomMiddleLayer2, Colors.White);
        SetLayerModulate(MapLayer.AutoTopLayer, Colors.White);
        SetLayerModulate(MapLayer.CustomTopLayer, Colors.White);
        
        EventManager.EmitEvent(EventEnum.OnSavePreviewImageBegin);
    }

    private void OnFramePostDraw()
    {
        if (_hasPreviewImage)
        {
            _previewIndex++;
            if (_previewIndex == 2)
            {
                var textureRect = MapEditorPanel.S_MapView2.Instance;
                var texture = textureRect.Texture;
                textureRect.Texture = null;
                texture.Dispose();
                textureRect.Visible = false;
                
                //还原工具栏
                MapEditorToolsPanel.Visible = true;
                //还原层级显示
                SetLayerEnabled(MapLayer.AutoFloorLayer, _tempAutoFloorLayer);
                SetLayerEnabled(MapLayer.AutoMiddleLayer, _tempAutoMiddleLayer);
                SetLayerEnabled(MapLayer.AutoTopLayer, _tempAutoTopLayer);
                SetLayerEnabled(MapLayer.CustomFloorLayer1, _tempCustomFloorLayer1);
                SetLayerEnabled(MapLayer.CustomFloorLayer2, _tempCustomFloorLayer2);
                SetLayerEnabled(MapLayer.CustomFloorLayer3, _tempCustomFloorLayer3);
                SetLayerEnabled(MapLayer.CustomMiddleLayer1, _tempCustomMiddleLayer1);
                SetLayerEnabled(MapLayer.CustomMiddleLayer2, _tempCustomMiddleLayer2);
                SetLayerEnabled(MapLayer.CustomTopLayer, _tempCustomTopLayer);
                SetCurrLayer(CurrLayer);

                //保存预览图
                var subViewport = MapEditorPanel.S_SubViewport.Instance;
                var viewportTexture = subViewport.GetTexture();
                var image = viewportTexture.GetImage();
                image.Resize(GameConfig.PreviewImageSize, GameConfig.PreviewImageSize, Image.Interpolation.Nearest);
                CurrRoomSplit.PreviewImage = ImageTexture.CreateFromImage(image);
                MapProjectManager.SaveRoomPreviewImage(CurrRoomSplit, image);
                
                //还原tileMap
                Position = _tempMapPos;
                Scale = _tempMapScale;
                
                //还原绘制视图
                subViewport.Size = _tempViewportSize;
                
                _previewFinish();
                _hasPreviewImage = false;
                
                EventManager.EmitEvent(EventEnum.OnSavePreviewImageFinish);
            }
        }
    }
    
    private void OnBakeFinished()
    {
        var polygonData = _editorTileMap.L_NavigationRegion.Instance.NavigationPolygon;
        var polygons = polygonData.Polygons;
        var vertices = polygonData.Vertices;
        _polygonData = new Vector2[polygons.Count][];
        for (var i = 0; i < polygons.Count; i++)
        {
            var polygon = polygons[i];
            var v2Array = new Vector2[polygon.Length];
            for (var j = 0; j < polygon.Length; j++)
            {
                v2Array[j] = vertices[polygon[j]];
            }
            _polygonData[i] = v2Array;
        }
    }
    
    private Color GetEditorLayerModulate(int layer)
    {
        if (!_desaltOtherLayer)
        {
            return Colors.White;
        }

        return layer == CurrLayer.Layer ? Colors.White : new Color(1, 1, 1, 0.25f);
    }

    private bool EqualsTerrainSet(Vector2I position)
    {
        if (GetCellSourceId(CurrLayer.Layer, position) == CurrSourceIndex)
        {
            var cellTileData = GetCellTileData(CurrLayer.Layer, position);
            if (cellTileData != null && cellTileData.TerrainSet == CurrTerrain.TerrainSetIndex)
            {
                return true;
            }
        }

        return false;
    }
}