Help with getting all objects at position.

UnknownUser

Is there a way to get all objects at a position via there area or collision shapes? would have thought there would be something like: Var new = objects_at_position(vector2(x,y))

Megalomaniak

Sounds like you might want to look into using a raycast?

UnknownUser

I’m not sure it will work with what I have in mind. I have an object that you can customize the shape of the collision_polygon, the idea is to find out the total area of the polygon using a 2d array and check each 64 x 64 square. I have done this by spawning detector objects which works good on small to large objects but becomes problematic when making anything overly large.

Ideally I’d like to be able to check every 64 x 64 square for collision_polygon without creating instances.

Megalomaniak

the square dots in each grid cell are the detector objects? Seems to me like they could just as well be raycasts. Key to performance would be to perhaps run them in their own thread and que the raycasts over multiple frames. Or do you absolutely need it to run the detection in every cell on every frame?

TwistedTwigleg

You could use an Area2D with the correct collision size, and then use the get_overlapping_bodies function (documentation) to get all of the overlapping collision bodies.

UnknownUser

There is a detector in each square in the grid. Each detector has 8 collision shapes, these are the small squares in each grid square. Then if enough collision shapes overlap the ship it shows a larger square in the grid indicating a valid place to put a turret. And this only needs to run once every time the shape changes.

I think I might have found a solution but have run out of time to test it so i'll update this post later, but this is what I found:

get_world_2d().direct_space_state.intersect_point() or get_world_2d().direct_space_state.intersect_ray()

UnknownUser

Thanks guys, I was able to find what i needed to get my "Death Star" operational while looking into your suggestions.

This is what I used to get it to work:

extends Node2D

var start_x
var start_y
var end_x
var end_y
var running = false

func _physics_process(delta):

	if running == true:
		running = false
		for x in range(start_x,end_x):
			for y in range(start_y,end_y):
				position = Vector2(x*64+32, y*64+32)
				var get_all_objects = get_world_2d().direct_space_state.intersect_point(position,32,[],0x7FFFFFFF,true,true)
				for i in range(get_all_objects.size()):
					if get_all_objects [i].collider.get_parent() == System.Blue_Print:
						System.Blue_Print.size += .125

func _on_Timer_timeout():
	running = true

I ended up needing to have a delay timer to get it to work, I just set it to 1 and it ran fine.