Creating a collision system to collide with anything implementing a collision component.

[The-DevBlog]

I'm creating a simple, 2d, top-down shooter. I've implemented a very simple collision system, but currently it only works between the player and the enemies, and not between the enemies. I would like this system to work between any entity implementing the collision component.

This is the function signature for the collision system. How could I construct this to work between any entity that has a collider? My initial thought was using generics of some sort, but I'm getting a little turned around on where to start.

fn collision(
    player: Query<(&Sprite, &Transform, With<Player>)>,
    mut enemy: Query<(
        &Sprite,
        &mut Transform,
        With<Enemy>,
        With<Collider>,
        Without<Player>,
    )>,
) {

Enemy spawn system.

commands
    .spawn_bundle(enemy)
    .with_children(|parent| {
        parent.spawn_bundle(healthbar);
    })
    .insert(Enemy)
    .insert(Collider)
    .insert(Health(HEALTH))
    .insert(Speed(SPEED))
    .insert(BoundaryTrigger(TRIGGER_BOUNDARY));

Player spawn system.

commands
    .spawn_bundle(player)
    .insert(Speed(200.0))
    .insert(Sprint(1.8))
    .insert(Player)
    .insert(IsSprinting(false))
    .insert(Direction("R".to_string()));