Detecting if something is in front an object

0 votes

How do I detect if something is in front of an object in a top-down environment? I know it has to do with the dot product, but I don't know how to implement it.

enter image description here

in Engine by (83 points)

1 Answer

0 votes
Best answer

To use the dot product you need a direction vector and the position of the other object, then you get the substraction (vector from object A to object B, or BA for short) and get the dot product of the BA vector to the direction vector. If this value is greater than 0 then the B object is facing towards the A object. You can see that on the VectorMath section of Godot's Documentation.

You can always use an Area2D as the view area for the object.

by (697 points)
selected by
Welcome to Godot Engine Q&A, where you can ask questions and receive answers from other members of the community.

Please make sure to read Frequently asked questions and How to use this Q&A? before posting your first questions.
Social login is currently unavailable. If you've previously logged in with a Facebook or GitHub account, use the I forgot my password link in the login box to set a password for your account. If you still can't access your account, send an email to [email protected] with your username.