Limit vector length of a physics body

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1

Godot Version

4.1.1

Question

t
t794×1123 14.8 KB

I try to limit the vector length of a physic body. Like seen in the picture the grey circle is a physics body, the white circle around is the area it should only be able to move in. (Its like a touch button for movement)

I can calculate the distance between the midle of white area and the physics body with direction_to() and turn off velocity when the distance reached its maximum but i want to still be able to move the physics body on the edge of the radius when the length is maxed.

Any ideas?

2

Why is a physics body being used for this? Wouldn’t a Node2D with a Sprite2D suffice?

3

its just an example for better undestanding, the purpose is different and embeded in something else

4

Just clamp the position.

5

how does it work with physics body if you have to add velocity and impulse to move the object

6

Godot docs says this because it’s not best practice but you can still do it.
Also you can use Area2Ds instead of RigidBody2Ds to escape that.

7

You could also try making it accelerate towards your target, but have a StaticBody2D in the way with a collision shape like the outline of a circle.

8

i have to use physics for that, since the node also have other tasks to do with it.

Thats the workaround currently, i hoped to make it clean by code

9

Well, if that works for you then mark it as solution.

10

Like i said its not what i was looking for, but thanks for your effort

11

I’m not sure what you want to do but you could try using the RigidBody2D._integrate_forces() callback to modify the physics state of the rigid body.