TileMap code control related

1. Clear the tile map

map.ClearAllTiles();

2. Get the specified coordinate grid

        TileBase tmp = map.GetTile(Vector3Int.zero);
        print(tmp);

3. Set to delete tiles

        map.SetTile(new Vector3Int(0, 2, 0), tileBase);

        map.SetTile(new Vector3Int(1, 0, 0), null);

4. Replace tiles

map.SwapTile(tmp, tileBase);

5. Convert world coordinates to grid coordinates

camera position 

Convert screen coordinates to world coordinates

Vector3 mousePos = Input.mousePosition;
Vector3 screenToWorld = Camera.main.ScreenToWorldPoint(new Vector3(mousePos.x, mousePos.y, 10));

The 10 on the Z axis corresponds to the position of the camera.

Convert world coordinates to grid coordinates

    void Update()
    {
        //按下鼠标左键
        if (Input.GetMouseButtonDown(0))
        {
            //得到鼠标在屏幕的坐标
            Vector3 mousePos = Input.mousePosition;
            //屏幕坐标转世界坐标
            Vector3 screenToWorld = Camera.main.ScreenToWorldPoint(new Vector3(mousePos.x, mousePos.y, 10));
            Debug.Log(screenToWorld);
            //世界坐标转屏幕坐标
            Vector3Int gridPosition = grid.WorldToCell(screenToWorld);
            //将鼠标所指位置更换tile
            map.SetTile(gridPosition, tb);
        }
    }

Effect

Click the mouse