using System.Collections.Generic;
using System.Linq;
using Godot;
using Godot.Collections;
public static class TileMapUtils
{
public const int MainSource = 0;
public const int MainTerrainSet = 0;
public const int MainTerrain = 0;
/// <summary>
/// 生成自动图块和地形, 并烘焙好导航网格
/// </summary>
public static Rect2I GenerateTerrain(TileMap tileMap, NavigationRegion2D navigationRegion, AutoTileConfig autoTileConfig)
{
var list = new List<Vector2I>();
var xStart = int.MaxValue;
var yStart = int.MaxValue;
var xEnd = int.MinValue;
var yEnd = int.MinValue;
var temp = tileMap.GetUsedCells(MapLayer.AutoFloorLayer);
var autoCellLayerGrid = temp.ToHashSet();
foreach (var (x, y) in autoCellLayerGrid)
{
//计算范围
if (x < xStart)
xStart = x;
else if (x > xEnd)
xEnd = x;
if (y < yStart)
yStart = y;
else if (y > yEnd)
yEnd = y;
//填充墙壁
if (!autoCellLayerGrid.Contains(new Vector2I(x, y - 1)))
{
var left = autoCellLayerGrid.Contains(new Vector2I(x - 1, y - 1));
var right = autoCellLayerGrid.Contains(new Vector2I(x + 1, y - 1));
if (left && right)
{
var tileCellData1 = autoTileConfig.Wall_Vertical_SingleTop;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 2), tileCellData1.SourceId, tileCellData1.AutoTileCoords);
var tileCellData2 = autoTileConfig.Wall_Vertical_SingleBottom;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 1), tileCellData2.SourceId, tileCellData2.AutoTileCoords);
}
else if (left)
{
var tileCellData1 = autoTileConfig.Wall_Vertical_LeftTop;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 2), tileCellData1.SourceId, tileCellData1.AutoTileCoords);
var tileCellData2 = autoTileConfig.Wall_Vertical_LeftBottom;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 1), tileCellData2.SourceId, tileCellData2.AutoTileCoords);
}
else if (right)
{
var tileCellData1 = autoTileConfig.Wall_Vertical_RightTop;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 2), tileCellData1.SourceId, tileCellData1.AutoTileCoords);
var tileCellData2 = autoTileConfig.Wall_Vertical_RightBottom;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 1), tileCellData2.SourceId, tileCellData2.AutoTileCoords);
}
else
{
var tileCellData1 = autoTileConfig.Wall_Vertical_CenterTop;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 2), tileCellData1.SourceId, tileCellData1.AutoTileCoords);
var tileCellData2 = autoTileConfig.Wall_Vertical_CenterBottom;
tileMap.SetCell(MapLayer.AutoFloorLayer, new Vector2I(x, y - 1), tileCellData2.SourceId, tileCellData2.AutoTileCoords);
}
}
}
//绘制临时边界
var temp1 = new List<Vector2I>();
for (var x = xStart - 3; x <= xEnd + 3; x++)
{
var p1 = new Vector2I(x, yStart - 5);
var p2 = new Vector2I(x, yEnd + 3);
temp1.Add(p1);
temp1.Add(p2);
//上横
tileMap.SetCell(MapLayer.AutoFloorLayer, p1, autoTileConfig.TopMask.SourceId, autoTileConfig.TopMask.AutoTileCoords);
//下横
tileMap.SetCell(MapLayer.AutoFloorLayer, p2, autoTileConfig.TopMask.SourceId, autoTileConfig.TopMask.AutoTileCoords);
}
for (var y = yStart - 5; y <= yEnd + 3; y++)
{
var p1 = new Vector2I(xStart - 3, y);
var p2 = new Vector2I(xEnd + 3, y);
temp1.Add(p1);
temp1.Add(p2);
//左竖
tileMap.SetCell(MapLayer.AutoFloorLayer, p1, autoTileConfig.TopMask.SourceId, autoTileConfig.TopMask.AutoTileCoords);
//右竖
tileMap.SetCell(MapLayer.AutoFloorLayer, p2, autoTileConfig.TopMask.SourceId, autoTileConfig.TopMask.AutoTileCoords);
}
//计算需要绘制的图块
var temp2 = new List<Vector2I>();
for (var x = xStart - 2; x <= xEnd + 2; x++)
{
for (var y = yStart - 4; y <= yEnd + 2; y++)
{
if (!autoCellLayerGrid.Contains(new Vector2I(x, y)) && !autoCellLayerGrid.Contains(new Vector2I(x, y + 1)) && !autoCellLayerGrid.Contains(new Vector2I(x, y + 2)))
{
list.Add(new Vector2I(x, y));
if (!IsMaskCollisionGround(autoCellLayerGrid, x, y))
{
temp2.Add(new Vector2I(x, y));
}
}
}
}
var arr = new Array<Vector2I>(list);
//绘制自动图块
tileMap.SetCellsTerrainConnect(MapLayer.AutoFloorLayer, arr, MainTerrainSet, MainTerrain, false);
//擦除临时边界
for (var i = 0; i < temp1.Count; i++)
{
tileMap.EraseCell(MapLayer.AutoFloorLayer, temp1[i]);
}
//计算区域
var rect = Utils.CalcRect(autoCellLayerGrid);
if (rect.Size != Vector2I.Zero)
{
rect.Position -= new Vector2I(2, 3);
rect.Size += new Vector2I(4, 5);
}
//开始绘制导航网格
GenerateNavigation(navigationRegion, rect.Position, rect.Size);
//擦除临时边界2
for (var i = 0; i < temp2.Count; i++)
{
tileMap.EraseCell(MapLayer.AutoFloorLayer, temp2[i]);
}
//将墙壁移动到指定层
MoveTerrainCell(tileMap, autoTileConfig, autoCellLayerGrid, rect.Position, rect.Size);
return rect;
}
private static bool IsMaskCollisionGround(HashSet<Vector2I> autoCellLayerGrid, int x, int y)
{
for (var i = -2; i <= 2; i++)
{
for (var j = -2; j <= 4; j++)
{
if (autoCellLayerGrid.Contains(new Vector2I(x + i, y + j)))
{
return true;
}
}
}
return false;
}
//生成导航网格
private static void GenerateNavigation(NavigationRegion2D navigationRegion, Vector2I currRoomPosition, Vector2I currRoomSize)
{
var navigationPolygon = navigationRegion.NavigationPolygon;
if (navigationPolygon != null)
{
navigationPolygon.Clear();
navigationPolygon.ClearPolygons();
navigationPolygon.ClearOutlines();
}
else
{
navigationPolygon = ResourceManager.Load<NavigationPolygon>(ResourcePath.resource_navigation_NavigationPolygon_tres);
navigationRegion.NavigationPolygon = navigationPolygon;
}
var endPos = currRoomPosition + currRoomSize;
navigationPolygon.AddOutline(new []
{
currRoomPosition * GameConfig.TileCellSize,
new Vector2(endPos.X, currRoomPosition.Y) * GameConfig.TileCellSize,
endPos * GameConfig.TileCellSize,
new Vector2(currRoomPosition.X, endPos.Y) * GameConfig.TileCellSize
});
navigationRegion.BakeNavigationPolygon(false);
}
//将自动生成的图块从 MapLayer.AutoFloorLayer 移动到指定图层中
private static void MoveTerrainCell(TileMap tileMap, AutoTileConfig autoTileConfig, HashSet<Vector2I> autoCellLayerGrid, Vector2I currRoomPosition, Vector2I currRoomSize)
{
tileMap.ClearLayer(MapLayer.AutoTopLayer);
tileMap.ClearLayer(MapLayer.AutoMiddleLayer);
var x = currRoomPosition.X;
var y = currRoomPosition.Y - 1;
var w = currRoomSize.X;
var h = currRoomSize.Y + 1;
for (var i = 0; i < w; i++)
{
for (var j = 0; j < h; j++)
{
var pos = new Vector2I(x + i, y + j);
if (!autoCellLayerGrid.Contains(pos) && tileMap.GetCellSourceId(MapLayer.AutoFloorLayer, pos) != -1)
{
var atlasCoords = tileMap.GetCellAtlasCoords(MapLayer.AutoFloorLayer, pos);
var layer = autoTileConfig.GetLayer(atlasCoords);
if (layer == MapLayer.AutoMiddleLayer)
{
layer = MapLayer.AutoMiddleLayer;
}
else if (layer == MapLayer.AutoTopLayer)
{
layer = MapLayer.AutoTopLayer;
}
else
{
Debug.LogError($"异常图块: {pos}, 这个图块的图集坐标'{atlasCoords}'不属于'MiddleMapLayer'和'TopMapLayer'!");
continue;
}
tileMap.EraseCell(MapLayer.AutoFloorLayer, pos);
tileMap.SetCell(layer, pos, MainSource, atlasCoords);
}
}
}
}
}
