How can i place a tile in a tilemap by script

I am very new to unity and c# and i am creating my first 2d game right now. I am trying to place a highlight sprite over my ground sprite. I basically want that the ground block that is in front of my player is highlighted so that the player could dig. Thats the second thing i would like help with: How can i Destroy specific tiles?

 

You can use Tilemap.SetTile

Destroying would also be a SetTile(null)

 

Thanks, but how do let it know which tile i want to place ? And do I put the script in on to the tilemap I created?

 

As long as you have references to the tile, tilemap, and player, this script could live anywhere. But since it's based on your player's position, I would put the script on the player.

Give your script a reference to the relevant tilemap, and then you can use Tilemap.WorldToCell to convert the player's position to the current cell they occupy. Then depending on which way your player is facing, you add one to that Cell position, and then use that position to SetTile.

Something like this maybe:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Tilemaps;
3.  
4. public class HighlightInFront : MonoBehaviour
5. {
6.     public Tile highlightTile;
7.     public Tilemap highlightMap;
8.  
9.     private Vector3Int previous;
10.  
11.     // do late so that the player has a chance to move in update if necessary
12.     private void LateUpdate()
13.     {
14.         // get current grid location
15.         Vector3Int currentCell = highlightMap.WorldToCell(transform.position);
16.         // add one in a direction (you'll have to change this to match your directional control)
17.         currentCell.x += 1;
18.  
19.         // if the position has changed
20.         if(currentCell != previous)
21.         {
22.             // set the new tile
23.             highlightMap.SetTile(currentCell, highlightTile);
24.  
25.             // erase previous
26.             highlightMap.SetTile(previous, null);
27.  
28.             // save the new position for next frame
29.             previous = currentCell;
30.         }
31.     }
32. }

 

Thank you so much!! I have tried this for several days now and now I finally understand. Thanks!

 

Thanks @jeffreyschoch for your help

 

thank you @jeffreyschoch

 

@jeffreyschoch bro how can we select a tile that has to be replaced in the tilemap in game

 

@jeffreyschoch please reply

 

You're better off starting a new thread with your question, I'm not available all the time and there are plenty of people here who can answer your question.

Use the same methods as above to find a tile. Get a position (mouse position? under the player? selected using arrow keys?), convert it to a cell position which is a Vector3Int.

Once you have that position, use SetTile to change the tile.
https://docs.unity3d.com/ScriptReference/Tilemaps.Tilemap.SetTile.html
https://docs.unity3d.com/ScriptReference/Tilemaps.Tilemap.html

 

Is there a way to erase a tile with script?

 

Hi @Bilion

That is not related to original question... which is "How can i place a tile in a tilemap by script" - ask it in your own question. That way it is also possible to find the question... so everyone can benefit.

 

Ok

 

Code (CSharp):

1. // erase previous
2. highlightMap.SetTile(previous, null);

 

thankk you so helpful