"Box2d" How to damage an object using velocty

[leightonw87]

Hi all, I'm making a game like angry birds but involves a cannon, I added eggs to it and I now want to be able to inflict damage against the eggs as they fall, I've looked on google but can only find info on how to do it for the action script version, I can't follow the code as I'm not really good at understanding it.

I think someone says about using impulses or postsolve(), I haven't got a clue how to though.

[leightonw87]

Sorry about this but I really need help with this as I can't figure this thing out, I need to cause damage to an object from the force of another object landing on the said object. I've tried numerous things but can't figure it out.

[DTownTony]

I did it by checking when 2 types collide and subtracting the velocity and the mass of Collision Body 1 from Collision Body 2's life and vice versa. It's not exact by any stretch, and kinda dirty, but it works good enough...sorta

[leightonw87]

I did it by checking when 2 types collide and subtracting the velocity and the mass of Collision Body 1 from Collision Body 2's life and vice versa. It's not exact by any stretch, and kinda dirty, but it works good enough...sorta

I got a bit of a newbish question here but how do I get the collision to register, I can't for the life of me get it to register. lol

[leightonw87]

I've figured it out now but collisions are not very accurate and very dirty but it will work, just need to tweak my code alot to get it to work.

Thanks again DTownTony for helping with damage.