Projectile With Explosion

[cuppajoeman]

Hi there,

I'm looking to add projectiles to my game that explode and would apply impulses to nearby objects when that happens.

I will support two different types of projectiles, one is a classic rocket which travels in a straight line and has no gravity applied to it over time, and the other is a grenade which travels in an arc as gravity is applied to it. Let's focus on the classic launcher for now.

In the past when I used a game engine I would have a physics object which had no gravity set on it and I would simply apply an impulse to the rocket to get it moving, the rocket would have it's own collision shape, and it would also have another collision shape which was a sphere for the "blast radius".

When the rocket starts colliding with something I would then check the blast radius to see if there were any objects intersecting that, and for each object apply an outward impulse on that object.

I am going to start implementing this after my exams are over, but in the mean time I was wondering if anyone has successfully implemented this kind of thing in Jolt and if there are any gotcha's/recommendations/differences when doing this in Jolt.

Thanks

[jrouwe]

I think it should work the same in Jolt. Use BodyCreationSettings::mGravityFactor = 0 to turn off gravity for your rocket, use the ContactListener to listen for collisions and use NarrowPhaseQuery::CollideShape with a SphereShape to detect objects that intersect with the explosion.