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use azalea_registry::builtin::MobEffect;
use bevy_ecs::{entity::Entity, event::EntityEvent, observer::On, system::Query};
use tracing::warn;
use crate::{ActiveEffects, Attributes, MobEffectData, effects::attribute_modifier_for_effect};
#[derive(EntityEvent)]
pub struct AddEffectEvent {
pub entity: Entity,
pub id: MobEffect,
pub data: MobEffectData,
}
pub fn handle_add_effect(
add_effect: On<AddEffectEvent>,
mut query: Query<(&mut ActiveEffects, &mut Attributes)>,
) {
let Ok((mut active_effects, mut attributes)) = query.get_mut(add_effect.entity) else {
warn!("got handle_add_effect for an entity without the required components");
return;
};
active_effects.insert(add_effect.id, add_effect.data.clone());
if let Some((attribute, modifier)) = attribute_modifier_for_effect(add_effect.id) {
let modifier = modifier.create(add_effect.data.amplifier);
if let Some(attribute) = attributes.get_mut(attribute) {
attribute.insert(modifier);
}
}
}
#[derive(EntityEvent)]
pub struct RemoveEffectsEvent {
pub entity: Entity,
pub effects: Vec<MobEffect>,
}
pub fn handle_remove_effects(
remove_effects: On<RemoveEffectsEvent>,
mut query: Query<(&mut ActiveEffects, &mut Attributes)>,
) {
let Ok((mut active_effects, mut attributes)) = query.get_mut(remove_effects.entity) else {
warn!("got handle_remove_effects for an entity without the required components");
return;
};
for &effect in &remove_effects.effects {
active_effects.remove(effect);
if let Some((attribute, modifier)) = attribute_modifier_for_effect(effect) {
// we're just trying to get the id of the modifier, so the amplifier passed here
// doesn't matter
let modifier = modifier.create(0);
if let Some(attribute) = attributes.get_mut(attribute) {
attribute.remove(&modifier.id);
}
}
}
}
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