TileBase.RefreshTile

参数

描述

当瓦片刷新时，会调用此方法。

实现此方法并在所有受影响的 瓦片 上调用 Tilemap.RefreshTile，包括给定位置处的瓦片，以刷新它们。如果瓦片的放置会影响相邻瓦片的属性，这也很有用。

using UnityEngine;
using UnityEngine.Tilemaps;

// Tile that displays a Sprite when it is alone and a different Sprite when it is orthogonally adjacent to the same NeighourTile
[CreateAssetMenu]
public class NeighbourTile : TileBase
{
    public Sprite spriteA;
    public Sprite spriteB;

    public override void RefreshTile(Vector3Int position, ITilemap tilemap)
    {
        for (int yd = -1; yd <= 1; yd++)
        {
            Vector3Int location = new Vector3Int(position.x, position.y + yd, position.z);
            if (IsNeighbour(location, tilemap))
                tilemap.RefreshTile(location);
        }
        for (int xd = -1; xd <= 1; xd++)
        {
            Vector3Int location = new Vector3Int(position.x + xd, position.y, position.z);
            if (IsNeighbour(location, tilemap))
                tilemap.RefreshTile(location);
        }
    }

    public override void GetTileData(Vector3Int position, ITilemap tilemap, ref TileData tileData)
    {
        tileData.sprite = spriteA;
        for (int yd = -1; yd <= 1; yd += 2)
        {
            Vector3Int location = new Vector3Int(position.x, position.y + yd, position.z);
            if (IsNeighbour(location, tilemap))
                tileData.sprite = spriteB;
        }
        for (int xd = -1; xd <= 1; xd += 2)
        {
            Vector3Int location = new Vector3Int(position.x + xd, position.y, position.z);
            if (IsNeighbour(location, tilemap))
                tileData.sprite = spriteB;
        }
    }

    private bool IsNeighbour(Vector3Int position, ITilemap tilemap)
    {
        TileBase tile = tilemap.GetTile(position);
        return (tile != null && tile == this);
    }
}