Problems with RayCast2D recognizing class of collider

Robert_Bobbinson

This is my inheritance class structure:

 Node2D:
 	GridBlock:
 		BlockWithRays:
 			Block
 			Glider

My Block has RayCast2D inherited from BlockWithRays. I want it to check if its rays are colliding with either a Block, or a Glider. The problem is get_collider() returns a Node2D object when it collides with either a Block or Glider.

I tried to set the bool constant is_glider in Block and Glider to check, but an 'invalid index' error arises when accessing it from the result of get_collider().

What's going on? How do I solve this issue?

Edit: The idea of adding is_glider to the objects worked. The problem was I was asking the area that collieded, not it's parent... So it's solved. If you have another idea of how to solve it better I'd love to hear it.

GlyphTheWolf

Hi,

Probably you could check that without adding anything additional to your object.

Assuming you already figured out that parent of returned object is your actual object you need to check you could use probably something like:

if(castResult.get_collider().get_parent() is Glider):
   #Collided with glider

Of course also good to check if castResult.get_collider() isn't null first.

Robert_Bobbinson

@GlyphTheWolf said: Hi,

Probably you could check that without adding anything additional to your object.

Assuming you already figured out that parent of returned object is your actual object you need to check you could use probably something like:
if(castResult.get_collider().get_parent() is Glider):
   #Collided with glider
Of course also good to check if castResult.get_collider() isn't null first.

I tried that but it complains of a cyclic dependency, since Glider will be mentioned in a method of BlockWithRays and then want that class to extend it.

TwistedTwigleg

@Robert_Bobbinson said:
@GlyphTheWolf said: Hi,

Probably you could check that without adding anything additional to your object.

Assuming you already figured out that parent of returned object is your actual object you need to check you could use probably something like:
if(castResult.get_collider().get_parent() is Glider):
   #Collided with glider
Of course also good to check if castResult.get_collider() isn't null first.
I tried that but it complains of a cyclic dependency, since Glider will be mentioned in a method of BlockWithRays and then want that class to extend it.

You can work around the cyclic dependency issue by adding something like const IS_GLIDER = true and then checking to see if the variable exists instead of checking the type:

if ("IS_GLIDER" in castResult.get_collider().get_parent()):
	# Collided with glider