How to pull a box2d body to a target? setLinearVelocity?

RogerT

Hi guys,
Say I have a box2d body of a snake and a target to which I want it to crawl. On its way it can bump into other bodies.

What do you think would be the right algorithm to pull the snake?

Somehow setLinearVelocity? or should I better use a pulley of some sort?

Thanks

atilim

@RogetT - I would also try applyForce.

RogerT

thanks, what values do you think I should be using in applyForce?
b2.Body:applyForce(forcex, forcey, pointx, pointy)

atilim

Most probably you want to apply force to the center of your body. Therefore you can give pointx and pointy as 0. And you should try different magnitudes for forcex and forcey.

ar2rsawseen

@RogerT if you look at this article:
http://appcodingeasy.com/Gideros-Mobile/Dragging-Box2d-object-in-Gideros-Mobile

You'd see that dragging in box2d is created through mouse joints (specifically setting target to touch coordinates)

I wonder if same mouse joint could be used for this purpose, to set target coordinates that you need, you can also adjust frequency to get the feel/speed you need