Hexagonal Tilemap Mouse over bug

Unity Engine
,
1

Hi,

I have encountered a bug I don’t understand.
I’m trying to highlight a tile when the mouse is over it on a hexagonal grid.

Here is the script i’m using :

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Tilemaps;

public class GridController : MonoBehaviour
{
    private Grid grid;
    [SerializeField] private Tilemap interactiveMap = null;
    [SerializeField] private Tile hoverTile = null;


    private Vector3Int previousMousePos = new Vector3Int();

    // Start is called before the first frame update
    void Start()
    {
        grid = gameObject.GetComponent<Grid>();
    }

    // Update is called once per frame
    void Update()
    {
        // Mouse over -> highlight tile
        Vector3Int mousePos = GetMousePosition();
        if (mousePos != previousMousePos)
        {
            interactiveMap.SetTile(previousMousePos, null); // Remove old hoverTile
            interactiveMap.SetTile(mousePos, hoverTile);
            previousMousePos = mousePos;
        }
    }

    Vector3Int GetMousePosition()
    {
        Vector3 mouseWorldPos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        return grid.WorldToCell(mouseWorldPos);
    }
}

I tried this with a regular tilemap and it works. So I really don’t understand why it doesn’t work with a Hexagonal Tilemap.
Anyone know where this comes from ?

2

Hi, would it be possible to share what you are seeing and what you are expecting instead? This would help to identify the issue. Thanks!

3

Can’t really see enough for your code to diagnose the issue here.

Tarodev has a very cool system of highlighting hexes, that I use myself.

4

I fixed it, it was setting the tile to the mouse position but with the Z set the same as the camera so it was not visible. I corrected it by getting only the x and y from the mouse position and setting the z coordinate to 0.