Can I somehow find out the collision vector? I need to find out with what force 2 objects collided

I think speed testing is not the best option. A little man is a box over which a skeleton is pulled. For realistic movement, each person runs after a sphere moving in front of him (steering behavior). The speed with which the box moves is calculated as follows: [image] That is, the box is consta…

I don’t know the use case, but a car crashing into people will probably bring the people to a higher velocity than they were at :slight_smile: I would expect a person that their velocity changed so drastically to be eliminated. If you need something more advanced than that - what engine are you usi…

Ammo. Try to knock down man http://test3.avior.by/site/car1/build/index.html

It is a very light and little car compared to the big people :slight_smile: Not exactly the scenario I imagined. But still, I would use velocities. The velocity of both bodies (before and) after the collision can tell you a lot about it. It does depend on your definition of velocity, person, and car…

I think you can add a function for collision callack but I can put hands on it. Then, I’d check the linear velocity and the direction of both objects. If the dot product of both linear velocity is almost 1, then I’d do nothing. If the dot is <0, then the collision would be brutal.

I don’t understand a bit how the scalar product will help here. Why, if the work is almost equal to 1, nothing needs to be done? it just shows that 2 bodies move in the same direction

Maybe you can find collision response thanks to these callbacks: [image] AmmoJSPlugin Does Not Call Legacy onCollisionEvent Bugs Yo @trevordev … I think i found issue… If i register a DUMMY collision using registerOnPhysicsCollide i then get my legacy onCollideEvent The …

I already use collide callback and there I calculate whether the body should stop in a collision, the question is different. How does a scalar product show the stiffness of a collision of bodies?

the value abs(dot(velocity1, velocity2)) is proportional to the difference in magnitude of the vectors. if 1 then the velocity is almost the same independently of direction.

I calculate the scalar product as follows: const scalar = car.physicsImpostor.getLinearVelocity().x * body.physicsImpostor.getLinearVelocity().x + car.physicsImpostor.getLinearVelocity().z * body.physicsImpostor.getLinearVelocity().z But in a hard collision, the value is also equal to 1. Al…

Collision vector

Questions

Cedric June 19, 2020, 2:32pm 11

Maybe you can find collision response thanks to these callbacks:

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Collision vector

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