Detection of individual tilemap's tiles with an area2d!

BipBop · December 13, 2023, 8:37pm

extends Node2D

@export var area: Area2D
@export var map: TileMap

func _ready():
	area.body_shape_entered.connect(area_entered)

func area_entered(_body_rid: RID, _body: Node2D, _body_shape_index: int, _local_shape_index: int):
	map.erase_cell(0,map.get_coords_for_body_rid(_body_rid))

I found this here:

github.com/godotengine/godot-proposals

Add signal compatibility between Area2D and TileMaps

opened 08:58PM - 01 Apr 21 UTC

SturdyGhost

topic:core topic:physics topic:2d

### Describe the problem or limitation you are having in your project When cr…eating new scenes or objects that have a range defined by an Area2-D, if I want a given tile map within that range to be impacted/altered in someway I have to do a lot of backend scripting. Even basic/simple shapes require multiple lines of scripting to create a basic square around that object in the tilemap. ### Describe the feature / enhancement and how it helps to overcome the problem or limitation What I'd be looking for is signal implementation from Area2-D that can detect and signal tiles/cells. This makes simple shapes significantly reduced in scripting efforts and it allows for the implementation of totally custom shapes with ease. I could make a custom polygon collision shape and without any effort be able to see what tiles/cells on a given tilemap are within that shape. ### Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams What I would be looking for is an Area-2D signal that detects and returns (Tilemap,tile/cell(Vector2(coordinate)) This signal will then search for any tilemaps instanced into the loaded scene and let you know if any tile on said maps are in its' range. If so, it will return said tilemap and the tile/cell coordinate within said map. ### If this enhancement will not be used often, can it be worked around with a few lines of script? If the area you are searching for is a simple square/rectangle shape it can be worked around with about 20 lines of script. However, any other simple shape adds more lines/complexity and if your goal is a custom, undefined, polygon it can't be done at all in only a few lines of script. ### Is there a reason why this should be core and not an add-on in the asset library? This functionality enhances the usefulness of tilemaps drastically. It enables more options and support around custom and changing environments, heavily improves user experience for interacting with tilemaps, and allows the user to easily define ranges of objects or maps without any intense scripting, opening up the engine to more users.

P.S.
For this you must set collisions to your tiles in tileset editor.

winston-yallow · December 13, 2023, 8:42pm

Hi there, thanks for posting a tip!

You can put the code between ``` lines like this:

```gdscript
func _ready():
    print("hello world")
```

That will correctly format the code in the forum, so it looks like this:

func _ready():
    print("hello world")