import { b2Fixture } from "@box2d/core";
import { b2ParticleGroup } from "../particle/b2_particle_group";
import { b2ParticleSystem, b2ParticleBodyContact, b2ParticleContact } from "../particle/b2_particle_system";
declare module "@box2d/core" {
    interface b2DestructionListener {
        /**
         * Called when any particle group is about to be destroyed.
         */
        SayGoodbyeParticleGroup(group: b2ParticleGroup): void;
        /**
         * Called when a particle is about to be destroyed.
         * The index can be used in conjunction with
         * b2ParticleSystem::GetUserDataBuffer() or
         * b2ParticleSystem::GetParticleHandleFromIndex() to determine which
         * particle has been destroyed.
         */
        SayGoodbyeParticle(system: b2ParticleSystem, index: number): void;
    }
    interface b2ContactFilter {
        ShouldCollideFixtureParticle(fixture: b2Fixture, system: b2ParticleSystem, index: number): boolean;
        ShouldCollideParticleParticle(system: b2ParticleSystem, indexA: number, indexB: number): boolean;
    }
    interface b2ContactListener {
        BeginContactFixtureParticle(system: b2ParticleSystem, contact: b2ParticleBodyContact): void;
        EndContactFixtureParticle(system: b2ParticleSystem, contact: b2ParticleBodyContact): void;
        BeginContactParticleParticle(system: b2ParticleSystem, contact: b2ParticleContact): void;
        EndContactParticleParticle(system: b2ParticleSystem, contact: b2ParticleContact): void;
    }
}
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