Weight catapult

Hi, i want create a catapult with weight like this

<img src="http://i49.tinypic.com/687es4.png" border="0" />

I put an object in a point and when I jump with another object on the catapult the first object get a boost. How can i do this?

you could try it with a limited revolute joint.

simply ad physics behaviour to your catapult and stick it to the green arrow. then add some degrees.

i dont know if this is gonna work .. u gotta try it.

The easiest (and most processor-intensive) solution would be to add physics behavior. (Assuming c2 has physics, I don't remember if it does)

Alternatively, just add upwards force to the left object equivalent to the downward force of the right object when the right object lands.

the catapult has already the physics behavior and a revolute joint, and it move when i jump on it with my 3 objects. But if i've already a object on it and jump with another one, I want the first receives a force. I tried with force and impulse, but doesn't work very well.

I want this, please help.

<img src="http://i45.tinypic.com/2dumhi.png" border="0" />

mh i guess the impulse of the second object falling on the upwards part of the catapult is too weak. have you played around with Friction and Density? i would either try to give it some sort of a mass. or you could make a force or an impulse to the catapult in direction of the first object as soon as the second object is on collision with the catapult.

could you provide a LIVE Demo or a capx?

Thanks for reply, but i solved this. The problem was the platform behavior, in fact with physics behavior only, i could do what i wanted.

GAMEGAMEGAME Could you maybe post the working capx of this? I have been trying to figure out how to do this correctly. :)

There is on forum, try to search. I've it but now my connection is too slow. If you don't find it, contact me by pm and I send it to you.

However is easy. Use physic behavior for catapult, green arrow (i don't know real name in english) and the objects. Set a revolute joint to arrow for catapult and try to put your object on it! I use physic for move my objects, but, depends on your game, you can use drag&drop to move them.