Create tilemap from code in Godot 4

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:bust_in_silhouette: Asked By Blueberry


I just started to move my game from godot 3.5 to 4.0, now I’m struggling with the new tile map system.

What I try to do:
I have a dictionary with tile Ids, tile names and cords like so and my tile set has 2 elements (one for each id with an image attached). I want to create a procedural created tile map with only 1 layer from code (see: Screenshot-2023-03-09-171325 hosted at ImgBB — ImgBB)

Example dict:

[{ id:"coal", name:"coal_tile", coords:Vector2i(5,10) }, 
{ id:"iron", name:"ironl_tile", coords:Vector2i(3,7) }]

Now I want create a tile map from gdscript and add those as cells.

In 3.5 I was doing something like this:

var chunk_width = 25
var chunk_width = 15

func create_chunk(x, y, ELEMENT):
	set_cell(0, Vector2i(x, y), ELEMENT.index)

for x in chunk_width:
	for y in range(0, world_depth):
		create_chunk(x, y, coal)

But with godot 4 I don’t know how to do exactly the same think I was checking doku for Tile Map, and Tile Set but I have no idea how to set a value to a cell.

For 4.0 I was trying with

hex_tile_map = $PanelContainer/HexTileMap
hex_tile_map.set_cell( 0, Vector2i(0, 0), 5, Vector2i(5, 10) )

but this didn’t work

I found a lot tutorials how to add tiles manually per mouse but not per code. If you have any suggestions, any help is welcome

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kitticpet | 2023-03-11 07:14

:bust_in_silhouette: Reply From: zhyrin

TileMap still has a set_cell() method in 4.0. Why doesn’t that work for you?

:bust_in_silhouette: Reply From: DevBandeira

Hey! What I do to add tiles by code in Godot 4 is:

   0,                     #Layer ID (0 by default)
   Vector2i(0, 0) ,       #Coordinate (x, y)
   0,                     #Tile id, (Image 01)
   Vector2i(0, 0)         #If you're working with an atlas, you should
                          #change this value (Image 02)

Image 01: you can access the tile id by the value specified in parentheses, in this case, I have Id 0 and Id 1

Image 1

Image 02: if you click and hover your mouse inside a tile cell, it’ll show the atlas coordinates from the specified cell you are, you can specify this cell as atlas coordinate (4th argument in set_cell method)

Image 2

Thank you very much.

hex_tile_map.set_cell(0, Vector2i(myCord1, myCord2), 0, Vector2i(0, 0))

was fixing my issue :slight_smile:

Blueberry | 2023-03-13 16:22