// 更新房间边缘瓦片集
public void UpdateEdgeTiles(TileType[,] map)
{
edgeTiles.Clear();
// 遍历上下左右四格，判断是否有墙
foreach (CaveCoord tile in tiles)
{
for (int i = 0; i < 4; i++)
{
int x = tile.tileX + GameMathf.UpDownLeftRight[i, 0];
int y = tile.tileY + GameMathf.UpDownLeftRight[i, 1];
if (GameMathf.XYIsInRange(x, y, map.GetLength(0), map.GetLength(1)) && map[x, y] == TileType.Wall)
{
edgeTiles.Add(tile);
continue;
}
}
}
}
//获取该点周围8个点为实体墙（map[x,y] == TileType.Wall）的个数。
private int GetSurroundingWallCount(int gridX, int gridY)
{
int wallCount = 0;
for (int neighbourX = gridX - 1; neighbourX <= gridX + 1; neighbourX++)
{
for (int neighbourY = gridY - 1; neighbourY <= gridY + 1; neighbourY++)
{
if (!GameMathf.XYIsInRange(neighbourX, neighbourY, width, height)) // 如果不在地图范围内，直接假定为墙
{
wallCount++;
}
else if (!(neighbourX == gridX && neighbourY == gridY)) // 在范围内，且不是本身的点
{
wallCount += map[neighbourX, neighbourY] == TileType.Wall ? 1 : 0;
}
}
}
return(wallCount);
}