Implements event batch id to events to display multiple events at the same time

src/dynamic_data/event_hooks.rs

@@ -9,7 +9,7 @@ use crate::static_data::Species;
 use crate::static_data::{Form, Statistic};
 
 /// A function that will be called when an event occured.
-type EvtHookFn = Box<dyn Fn(&Box<&Event>)>;
+type EvtHookFn = Box<dyn Fn(Arc<EventData>, EventBatchId)>;
 /// A collection of event hooks.
 type EvtHookCollection = Vec<EvtHookFn>;
 
@@ -35,12 +35,12 @@ impl EventHook {
 
     /// Run a new event. This will send the event to all externally defined event listeners. It will
     /// dispose of the event afterwards.
-    pub fn trigger(&self, evt: Event) {
-        let b = Box::new(&evt);
+    pub fn trigger(&self, evt: EventData, batch_id: EventBatchId) {
+        let b = Arc::new(evt);
         #[allow(clippy::unwrap_used)] // This should never fail.
         let read_lock = self.evt_hook_function.read().unwrap();
         for f in read_lock.iter() {
-            f(&b);
+            f(b.clone(), batch_id);
         }
     }
 }
@@ -53,7 +53,7 @@ impl Debug for EventHook {
 
 /// The different events that can occur during the battle, for which a GUI should show something.
 #[derive(Debug)]
-pub enum Event<'own> {
+pub enum EventData {
     /// A switch event happens when a Pokemon gets switched out for something else.
     Switch {
         /// The side the Pokemon got switched from/on
@@ -77,7 +77,7 @@ pub enum Event<'own> {
     /// enjoy.
     SpeciesChange {
         /// The pokemon that changed species.
-        pokemon: &'own Pokemon,
+        pokemon: Pokemon,
         /// The new species of the Pokemon.
         species: Arc<dyn Species>,
         /// The form of the species the Pokemon will have.
@@ -86,14 +86,14 @@ pub enum Event<'own> {
     /// This event happens when a Pokemon changes form during battle. This is rather common.
     FormChange {
         /// The pokemon that changed forms.
-        pokemon: &'own Pokemon,
+        pokemon: Pokemon,
         /// The new form of the Pokemon.
         form: Arc<dyn Form>,
     },
     /// This event happens when a Pokemon takes damage.
     Damage {
         /// The Pokemon that takes damage.
-        pokemon: &'own Pokemon,
+        pokemon: Pokemon,
         /// The source of damage.
         source: DamageSource,
         /// The health of the Pokemon before the damage.
@@ -104,7 +104,7 @@ pub enum Event<'own> {
     /// This event happens when a Pokemon gets healed
     Heal {
         /// The Pokemon that gets healed.
-        pokemon: &'own Pokemon,
+        pokemon: Pokemon,
         /// The health of the Pokemon before the heal.
         original_health: u32,
         /// The health of the Pokemon after the heal.
@@ -113,24 +113,24 @@ pub enum Event<'own> {
     /// This event happens when a Pokemon faints.
     Faint {
         /// The pokemon that has fainted.
-        pokemon: &'own Pokemon,
+        pokemon: Pokemon,
     },
     /// This event happens when a Pokemon uses a move on a target, just before any hits.
     MoveUse {
         /// The data of the move used.
-        executing_move: &'own ExecutingMove,
+        executing_move: Arc<ExecutingMove>,
     },
     /// This event happens when a Pokemon missed.
     Miss {
         /// The pokemon that missed.
-        user: &'own Pokemon,
+        user: Pokemon,
     },
     /// The turn is finished running, waiting for new input.
     EndTurn,
     /// A pokemon had its stat boost changed
     StatBoostChange {
         /// The pokemon that had its stat boosts changed.
-        user: &'own Pokemon,
+        user: Pokemon,
         /// The statistic that changed.
         stat: Statistic,
         /// The value of the stat before the change.
@@ -138,4 +138,42 @@ pub enum Event<'own> {
         /// The value of the stat after the change.
         new_value: i8,
     },
+    /// Triggered when a move hits.
+    MoveHit {
+        /// The pokemon that used the move.
+        user: Pokemon,
+        /// The pokemon that was hit.
+        target: Pokemon,
+        /// The effectiveness of the move.
+        effectiveness: f32,
+    },
+}
+
+/// Allows for the batching of multiple events that should be shown at the same time.
+#[derive(Default, Copy, Clone)]
+pub struct EventBatchId {
+    /// The id of the batch.
+    batch_id: uuid::Uuid,
+}
+
+impl EventBatchId {
+    /// Gets the batch id as two u64s.
+    pub fn as_u64_pair(&self) -> (u64, u64) {
+        self.batch_id.as_u64_pair()
+    }
+
+    /// Creates a new batch id from two u64s.
+    pub fn from_u64_pair(a: u64, b: u64) -> Self {
+        Self {
+            batch_id: uuid::Uuid::from_u64_pair(a, b),
+        }
+    }
+}
+
+impl From<u128> for EventBatchId {
+    fn from(value: u128) -> Self {
+        Self {
+            batch_id: uuid::Uuid::from_u128(value),
+        }
+    }
 }

src/dynamic_data/flow/turn_runner.rs

@@ -4,13 +4,13 @@ use std::ops::Deref;
 use std::sync::Arc;
 
 use crate::dynamic_data::choices::TurnChoice;
-use crate::dynamic_data::event_hooks::Event;
+use crate::dynamic_data::event_hooks::EventData;
 use crate::dynamic_data::flow::target_resolver::resolve_targets;
 use crate::dynamic_data::script_handling::{ScriptSource, ScriptWrapper};
-use crate::dynamic_data::Battle;
 use crate::dynamic_data::DamageSource;
 use crate::dynamic_data::ExecutingMove;
 use crate::dynamic_data::Pokemon;
+use crate::dynamic_data::{Battle, EventBatchId};
 use crate::static_data::MoveCategory;
 use crate::{run_scripts, script_hook, PkmnError};
 
@@ -145,9 +145,12 @@ impl Battle {
         if !executing_move.chosen_move().try_use(1) {
             return Ok(());
         }
-        self.event_hook().trigger(Event::MoveUse {
-            executing_move: &executing_move,
-        });
+        self.event_hook().trigger(
+            EventData::MoveUse {
+                executing_move: executing_move.clone(),
+            },
+            Default::default(),
+        );
         let mut fail = false;
         script_hook!(fail_move, executing_move, &executing_move, &mut fail);
         if fail {
@@ -280,9 +283,12 @@ impl Battle {
             // TODO: Deal with accuracy/evasion stats.
             if accuracy < 100 && self.random().get_max(100)? as u8 >= accuracy {
                 script_hook!(on_move_miss, target, executing_move, target);
-                self.event_hook().trigger(Event::Miss {
-                    user: executing_move.user().deref(),
-                });
+                self.event_hook().trigger(
+                    EventData::Miss {
+                        user: executing_move.user().clone(),
+                    },
+                    Default::default(),
+                );
                 break;
             }
 
@@ -306,7 +312,16 @@ impl Battle {
                     hit_data.set_damage(damage);
                 }
                 if damage > 0 {
-                    target.damage(damage, DamageSource::MoveDamage)?;
+                    let move_hit_event_batch = EventBatchId::default();
+                    self.event_hook().trigger(
+                        EventData::MoveHit {
+                            user: executing_move.user().clone(),
+                            target: target.clone(),
+                            effectiveness,
+                        },
+                        move_hit_event_batch,
+                    );
+                    target.damage(damage, DamageSource::MoveDamage, move_hit_event_batch)?;
                     if !target.is_fainted() {
                         script_hook!(on_incoming_hit, target, executing_move, target, hit_index);
                     } else {
@@ -352,9 +367,12 @@ impl Battle {
 
         if number_of_hits == 0 {
             script_hook!(on_move_miss, target, executing_move, target);
-            self.event_hook().trigger(Event::Miss {
-                user: executing_move.user().deref(),
-            });
+            self.event_hook().trigger(
+                EventData::Miss {
+                    user: executing_move.user().clone(),
+                },
+                Default::default(),
+            );
         }
 
         if !executing_move.user().is_fainted() {

src/dynamic_data/models/battle.rs

@@ -9,7 +9,7 @@ use atomig::Atomic;
 use parking_lot::RwLock;
 
 use crate::dynamic_data::choices::TurnChoice;
-use crate::dynamic_data::event_hooks::{Event, EventHook};
+use crate::dynamic_data::event_hooks::{EventData, EventHook};
 use crate::dynamic_data::models::battle_party::BattleParty;
 use crate::dynamic_data::models::battle_random::BattleRandom;
 use crate::dynamic_data::models::battle_side::BattleSide;
@@ -333,7 +333,7 @@ impl Battle {
         }
 
         self.data.current_turn_queue.write().take();
-        self.data.event_hook.trigger(Event::EndTurn);
+        self.data.event_hook.trigger(EventData::EndTurn, Default::default());
         let end_time = chrono::Utc::now();
         let time = end_time - start_time;
         match time.num_nanoseconds() {

src/dynamic_data/models/battle_side.rs

@@ -8,7 +8,7 @@ use parking_lot::lock_api::RwLockReadGuard;
 use parking_lot::{RawRwLock, RwLock};
 
 use crate::dynamic_data::choices::TurnChoice;
-use crate::dynamic_data::event_hooks::Event;
+use crate::dynamic_data::event_hooks::EventData;
 use crate::dynamic_data::models::battle::Battle;
 use crate::dynamic_data::models::pokemon::Pokemon;
 use crate::dynamic_data::script_handling::{ScriptSource, ScriptSourceData, ScriptWrapper};
@@ -231,18 +231,24 @@ impl BattleSide {
                     pokemon.mark_opponent_as_seen(opponent.weak());
                 }
             }
-            battle.event_hook().trigger(Event::Switch {
-                side_index: self.data.index,
-                index,
-                pokemon: Some(pokemon.clone()),
-            });
+            battle.event_hook().trigger(
+                EventData::Switch {
+                    side_index: self.data.index,
+                    index,
+                    pokemon: Some(pokemon.clone()),
+                },
+                Default::default(),
+            );
             script_hook!(on_switch_in, pokemon, pokemon);
         } else {
-            self.battle()?.event_hook().trigger(Event::Switch {
-                side_index: self.data.index,
-                index,
-                pokemon: None,
-            });
+            self.battle()?.event_hook().trigger(
+                EventData::Switch {
+                    side_index: self.data.index,
+                    index,
+                    pokemon: None,
+                },
+                Default::default(),
+            );
         }
         Ok(())
     }
@@ -339,11 +345,14 @@ impl BattleSide {
         }
 
         data.pokemon.write().swap(a as usize, b as usize);
-        self.battle()?.event_hook().trigger(Event::Swap {
-            side_index: data.index,
-            index_a: a,
-            index_b: b,
-        });
+        self.battle()?.event_hook().trigger(
+            EventData::Swap {
+                side_index: data.index,
+                index_a: a,
+                index_b: b,
+            },
+            Default::default(),
+        );
         Ok(true)
     }
 

src/dynamic_data/models/pokemon.rs

@@ -9,12 +9,13 @@ use parking_lot::lock_api::RwLockReadGuard;
 use parking_lot::{RawRwLock, RwLock};
 
 use crate::defines::{LevelInt, MAX_MOVES};
-use crate::dynamic_data::event_hooks::Event;
+use crate::dynamic_data::event_hooks::EventData;
 use crate::dynamic_data::models::battle::Battle;
 use crate::dynamic_data::models::learned_move::{LearnedMove, MoveLearnMethod};
 use crate::dynamic_data::script_handling::{ScriptSource, ScriptSourceData, ScriptWrapper};
 use crate::dynamic_data::{
-    DynamicLibrary, Script, ScriptCategory, ScriptContainer, ScriptSet, VolatileScriptsOwner, WeakBattleReference,
+    DynamicLibrary, EventBatchId, Script, ScriptCategory, ScriptContainer, ScriptSet, VolatileScriptsOwner,
+    WeakBattleReference,
 };
 use crate::static_data::AbilityIndex;
 use crate::static_data::Form;
@@ -396,12 +397,15 @@ impl Pokemon {
         if changed {
             if let Some(battle) = self.get_battle() {
                 let new_value = self.stat_boost(stat);
-                battle.event_hook().trigger(Event::StatBoostChange {
-                    user: self,
-                    stat,
-                    old_value,
-                    new_value,
-                })
+                battle.event_hook().trigger(
+                    EventData::StatBoostChange {
+                        user: self.clone(),
+                        stat,
+                        old_value,
+                        new_value,
+                    },
+                    Default::default(),
+                )
             }
             self.recalculate_boosted_stats()?;
         }
@@ -531,11 +535,14 @@ impl Pokemon {
         let r = self.data.battle_data.read();
         if let Some(battle_data) = &r.deref() {
             if let Some(battle) = battle_data.battle() {
-                battle.event_hook().trigger(Event::SpeciesChange {
-                    pokemon: self,
-                    species,
-                    form,
-                })
+                battle.event_hook().trigger(
+                    EventData::SpeciesChange {
+                        pokemon: self.clone(),
+                        species,
+                        form,
+                    },
+                    Default::default(),
+                )
             }
         }
         Ok(())
@@ -597,10 +604,13 @@ impl Pokemon {
         let r = self.data.battle_data.read();
         if let Some(battle_data) = r.deref() {
             if let Some(battle) = battle_data.battle() {
-                battle.event_hook().trigger(Event::FormChange {
-                    pokemon: self,
-                    form: form.clone(),
-                })
+                battle.event_hook().trigger(
+                    EventData::FormChange {
+                        pokemon: self.clone(),
+                        form: form.clone(),
+                    },
+                    Default::default(),
+                )
             }
         };
         Ok(())
@@ -679,7 +689,7 @@ impl Pokemon {
     }
 
     /// Damages the Pokemon by a certain amount of damage, from a damage source.
-    pub fn damage(&self, mut damage: u32, source: DamageSource) -> Result<()> {
+    pub fn damage(&self, mut damage: u32, source: DamageSource, evt_batch_id: EventBatchId) -> Result<()> {
         if damage > self.current_health() {
             damage = self.current_health();
         }
@@ -689,12 +699,15 @@ impl Pokemon {
         let new_health = self.current_health() - damage;
         if let Some(battle_data) = &self.data.battle_data.read().deref() {
             if let Some(battle) = battle_data.battle() {
-                battle.event_hook().trigger(Event::Damage {
-                    pokemon: self,
-                    source,
-                    original_health: self.current_health(),
-                    new_health,
-                });
+                battle.event_hook().trigger(
+                    EventData::Damage {
+                        pokemon: self.clone(),
+                        source,
+                        original_health: self.current_health(),
+                        new_health,
+                    },
+                    evt_batch_id,
+                );
             }
         }
         if self
@@ -719,7 +732,9 @@ impl Pokemon {
         let r = self.data.battle_data.read();
         if let Some(battle_data) = r.deref() {
             if let Some(battle) = battle_data.battle() {
-                battle.event_hook().trigger(Event::Faint { pokemon: self });
+                battle
+                    .event_hook()
+                    .trigger(EventData::Faint { pokemon: self.clone() }, Default::default());
                 script_hook!(on_faint, self, self, source);
                 script_hook!(on_remove, self,);
 
@@ -752,11 +767,14 @@ impl Pokemon {
         let new_health = self.current_health() + max_amount;
         if let Some(battle_data) = &self.data.battle_data.read().deref() {
             if let Some(battle) = battle_data.battle() {
-                battle.event_hook().trigger(Event::Heal {
-                    pokemon: self,
-                    original_health: self.current_health(),
-                    new_health,
-                });
+                battle.event_hook().trigger(
+                    EventData::Heal {
+                        pokemon: self.clone(),
+                        original_health: self.current_health(),
+                        new_health,
+                    },
+                    Default::default(),
+                );
             }
         }
         self.data.current_health.store(new_health, Ordering::SeqCst);

src/ffi/dynamic_data/models/event.rs

@@ -1,22 +1,25 @@
-use crate::dynamic_data::{Event, Pokemon};
-use crate::ffi::ExternPointer;
+use crate::dynamic_data::{EventData, Pokemon};
+use crate::ffi::ffi_handle::FromFFIHandle;
 use crate::ffi::FFIHandle;
+use std::ops::Deref;
+use std::sync::Arc;
 
 /// The kind of the event.
 #[no_mangle]
-extern "C" fn event_kind(ptr: ExternPointer<Event>) -> u8 {
-    match ptr.as_ref() {
-        Event::Switch { .. } => 1,
-        Event::Swap { .. } => 2,
-        Event::SpeciesChange { .. } => 3,
-        Event::FormChange { .. } => 4,
-        Event::Damage { .. } => 5,
-        Event::Heal { .. } => 6,
-        Event::Faint { .. } => 7,
-        Event::MoveUse { .. } => 8,
-        Event::Miss { .. } => 9,
-        Event::EndTurn => 10,
-        Event::StatBoostChange { .. } => 11,
+extern "C" fn event_kind(ptr: FFIHandle<Arc<EventData>>) -> u8 {
+    match ptr.from_ffi_handle().deref() {
+        EventData::Switch { .. } => 1,
+        EventData::Swap { .. } => 2,
+        EventData::SpeciesChange { .. } => 3,
+        EventData::FormChange { .. } => 4,
+        EventData::Damage { .. } => 5,
+        EventData::Heal { .. } => 6,
+        EventData::Faint { .. } => 7,
+        EventData::MoveUse { .. } => 8,
+        EventData::Miss { .. } => 9,
+        EventData::EndTurn => 10,
+        EventData::StatBoostChange { .. } => 11,
+        EventData::MoveHit { .. } => 12,
     }
 }
 
@@ -43,12 +46,12 @@ macro_rules! event_ffi {
             }
             /// The getter for the data for the relevant event.
             #[no_mangle]
-            extern "C" fn [<event_ $event_name:snake _data>](ptr: ExternPointer<Event>) -> [<$event_name Data>] {
-                if let Event::$event_name {
+            extern "C" fn [<event_ $event_name:snake _data>](ptr: FFIHandle<Arc<EventData>>) -> [<$event_name Data>] {
+                if let EventData::$event_name {
                     $(
                         $par_name,
                     )+
-                } = ptr.as_ref()
+                } = ptr.from_ffi_handle().deref()
                 {
                     $ctor
                 }

src/ffi/dynamic_data/models/native_event_hook.rs

@@ -1,25 +1,29 @@
-use crate::dynamic_data::Event;
+use crate::dynamic_data::{EventBatchId, EventData};
+use crate::ffi::ffi_handle::FFIHandle;
+use std::sync::Arc;
 
 /// Wrapper class for easier use of an external function pointer.
 #[repr(C)]
 pub(super) struct NativeEventHook {
-    /// The actual C function to be called.
-    f: extern "C" fn(*const Event<'_>),
+    /// The actual C function to be called. Note that we pass the batch id as a pair of u64s. This
+    /// is because u128 does not have a stable ABI yet.
+    f: extern "C" fn(FFIHandle<Arc<EventData>>, u64, u64),
 }
 
 impl NativeEventHook {
     /// Calls the actual wrapped function in the correct format.
-    fn call_self(&self, b: &&Event<'_>) {
-        (self.f)(*b as *const Event)
+    fn call_self(&self, b: Arc<EventData>, batch_id: EventBatchId) {
+        let batch_id = batch_id.as_u64_pair();
+        (self.f)(FFIHandle::get_handle(b.into()), batch_id.0, batch_id.1);
     }
 }
 
 /// A tuple with the arguments of the event hook function
-type EventHookArgs<'a, 'b, 'c> = (&'a Box<&'b Event<'c>>,);
+type EventHookArgs<'a, 'b, 'c> = (Arc<EventData>, EventBatchId);
 
 impl FnMut<EventHookArgs<'_, '_, '_>> for NativeEventHook {
     extern "rust-call" fn call_mut(&mut self, args: EventHookArgs<'_, '_, '_>) -> Self::Output {
-        self.call_self(args.0)
+        self.call_self(args.0, args.1)
     }
 }
 
@@ -27,12 +31,12 @@ impl FnOnce<EventHookArgs<'_, '_, '_>> for NativeEventHook {
     type Output = ();
 
     extern "rust-call" fn call_once(self, args: EventHookArgs<'_, '_, '_>) -> Self::Output {
-        self.call_self(args.0)
+        self.call_self(args.0, args.1)
     }
 }
 
 impl Fn<EventHookArgs<'_, '_, '_>> for NativeEventHook {
     extern "rust-call" fn call(&self, args: EventHookArgs<'_, '_, '_>) -> Self::Output {
-        self.call_self(args.0)
+        self.call_self(args.0, args.1)
     }
 }

src/ffi/dynamic_data/models/pokemon.rs

@@ -1,5 +1,5 @@
 use crate::defines::LevelInt;
-use crate::dynamic_data::{Battle, DamageSource, DynamicLibrary, LearnedMove, MoveLearnMethod, Pokemon};
+use crate::dynamic_data::{Battle, DamageSource, DynamicLibrary, EventBatchId, LearnedMove, MoveLearnMethod, Pokemon};
 use crate::ffi::ffi_handle::{FFIHandle, FromFFIHandle};
 use crate::ffi::{FFIResult, OwnedPtrString};
 use crate::static_data::{
@@ -397,8 +397,21 @@ extern "C" fn pokemon_is_on_battlefield(handle: FFIHandle<Pokemon>) -> u8 {
 
 /// Damages the Pokemon by a certain amount of damage, from a damage source.
 #[no_mangle]
-extern "C" fn pokemon_damage(handle: FFIHandle<Pokemon>, damage: u32, source: DamageSource) -> FFIResult<()> {
-    handle.from_ffi_handle().damage(damage, source).into()
+extern "C" fn pokemon_damage(
+    handle: FFIHandle<Pokemon>,
+    damage: u32,
+    source: DamageSource,
+    evt_batch_id_1: u64,
+    evt_batch_id_2: u64,
+) -> FFIResult<()> {
+    handle
+        .from_ffi_handle()
+        .damage(
+            damage,
+            source,
+            EventBatchId::from_u64_pair(evt_batch_id_1, evt_batch_id_2),
+        )
+        .into()
 }
 
 /// Heals the Pokemon by a specific amount. Unless allow_revive is set to true, this will not

src/ffi/ffi_handle.rs

@@ -100,6 +100,9 @@ pub(super) enum FFIObject {
     MiscLibrary(Arc<dyn crate::dynamic_data::MiscLibrary>),
     ScriptResolver(Arc<dyn crate::dynamic_data::ScriptResolver>),
     DynamicLibrary(Arc<dyn crate::dynamic_data::DynamicLibrary>),
+
+    // Events
+    Event(Arc<crate::dynamic_data::EventData>),
 }
 
 unsafe impl Send for FFIObject {}
@@ -218,6 +221,7 @@ impl Hash for FFIObject {
             Self::MiscLibrary(a) => Arc::as_ptr(a).hash(state),
             Self::ScriptResolver(a) => Arc::as_ptr(a).hash(state),
             Self::DynamicLibrary(a) => Arc::as_ptr(a).hash(state),
+            FFIObject::Event(a) => Arc::as_ptr(a).hash(state),
         }
     }
 }
@@ -265,6 +269,7 @@ impl PartialEq for FFIObject {
             (Self::MiscLibrary(a), Self::MiscLibrary(b)) => Arc::as_ptr(a).addr() == Arc::as_ptr(b).addr(),
             (Self::ScriptResolver(a), Self::ScriptResolver(b)) => Arc::as_ptr(a).addr() == Arc::as_ptr(b).addr(),
             (Self::DynamicLibrary(a), Self::DynamicLibrary(b)) => Arc::as_ptr(a).addr() == Arc::as_ptr(b).addr(),
+            (Self::Event(a), Self::Event(b)) => Arc::as_ptr(a).addr() == Arc::as_ptr(b).addr(),
             _ => false,
         }
     }
@@ -337,3 +342,4 @@ ffi_obj_conversions!(Arc<dyn crate::dynamic_data::DamageLibrary>, DamageLibrary)
 ffi_obj_conversions!(Arc<dyn crate::dynamic_data::MiscLibrary>, MiscLibrary);
 ffi_obj_conversions!(Arc<dyn crate::dynamic_data::ScriptResolver>, ScriptResolver);
 ffi_obj_conversions!(Arc<dyn crate::dynamic_data::DynamicLibrary>, DynamicLibrary);
+ffi_obj_conversions!(Arc<crate::dynamic_data::EventData>, Event);

src/script_implementations/wasm/export_registry/dynamic_data/pokemon.rs

@@ -1,7 +1,7 @@
 use std::mem::transmute;
 
 use crate::defines::LevelInt;
-use crate::dynamic_data::{Battle, DynamicLibrary, LearnedMove, Pokemon, VolatileScriptsOwner};
+use crate::dynamic_data::{Battle, DynamicLibrary, EventBatchId, LearnedMove, Pokemon, VolatileScriptsOwner};
 use crate::script_implementations::wasm::export_registry::{
     get_value, get_value_arc, get_value_arc_void, get_value_call_getter, get_value_void, register, try_wasm, wasm_err,
     wasm_ok, WasmResult, WasmVoidResult, WasmVoidResultExtension,
@@ -120,14 +120,16 @@ register! {
         env: FunctionEnvMut<WebAssemblyEnv>,
         pokemon: ExternRef<Pokemon>,
         damage: u32,
-        source: u8
+        source: u8,
+        event_batch_id_1: u64,
+        event_batch_id_2: u64,
     ) -> WasmVoidResult {
         unsafe {
             let pokemon = match pokemon.value_func(&env) {
                 Ok(pokemon) => pokemon,
                 Err(e) => return WasmVoidResult::err(e, &env),
             };
-            match pokemon.damage(damage, transmute(source)) {
+            match pokemon.damage(damage, transmute(source), EventBatchId::from_u64_pair(event_batch_id_1, event_batch_id_2)) {
                 Ok(()) => WasmVoidResult::ok(),
                 Err(e) => WasmVoidResult::err(e, &env),
             }