Add basic Event scripting capaibilities

This implements the first event script, going from the first Ul'dah opening
cutscene to the next.

resources/scripts/opening/OpeningUldah.lua

@@ -0,0 +1,21 @@
+--- TODO: find a way to hardcode it this way
+EVENT_ID = 1245187
+
+function Scene00000(player)
+    player:play_scene(EVENT_ID, 00000, 4959237, 1)
+end
+
+function Scene00001(player)
+    --- todo put player in correct position
+    player:play_scene(EVENT_ID, 00001, 4959237, 1)
+end
+
+function onEnterTerritory(player)
+    Scene00000(player);
+end
+
+function onSceneFinished(player, scene)
+    if scene == 0 then
+        Scene00001(player)
+    end
+end

src/bin/kawari-world.rs

@@ -76,6 +76,7 @@ async fn main() {
             position: Position::default(),
             inventory: Inventory::new(),
             status_effects: StatusEffects::default(),
+            event: None,
         };
 
         let mut lua_player = LuaPlayer::default();
@@ -570,6 +571,7 @@ async fn main() {
                                     ClientZoneIpcData::ChatMessage(chat_message) => {
                                         ChatHandler::handle_chat_message(
                                             &mut connection,
+                                            &mut lua_player,
                                             chat_message,
                                         )
                                         .await
@@ -754,6 +756,10 @@ async fn main() {
                                         tracing::info!(
                                             "Recieved EventRelatedUnk! {unk1} {unk2} {unk3} {unk4}"
                                         );
+
+                                        if let Some(event) = connection.event.as_mut() {
+                                            event.scene_finished(&mut lua_player, *unk2);
+                                        }
                                     }
                                 }
                             }

src/world/chat_handler.rs

@@ -3,14 +3,17 @@ use crate::{
     config::get_config,
     opcodes::ServerZoneIpcType,
     packet::{PacketSegment, SegmentType},
-    world::ipc::{
-        ActorControl, ActorControlCategory, BattleNpcSubKind, CommonSpawn, DisplayFlag, EventPlay,
-        EventStart, NpcSpawn, ObjectKind, OnlineStatus, PlayerSpawn, PlayerSubKind,
+    world::{
+        Event,
+        ipc::{
+            ActorControl, ActorControlCategory, BattleNpcSubKind, CommonSpawn, DisplayFlag,
+            EventPlay, EventStart, NpcSpawn, ObjectKind, OnlineStatus, PlayerSpawn, PlayerSubKind,
             ServerZoneIpcData, ServerZoneIpcSegment,
         },
+    },
 };
 
-use super::{ZoneConnection, ipc::ChatMessage};
+use super::{LuaPlayer, ZoneConnection, ipc::ChatMessage};
 
 pub const CUSTOMIZE_DATA: CustomizeData = CustomizeData {
     race: 4,
@@ -44,7 +47,11 @@ pub const CUSTOMIZE_DATA: CustomizeData = CustomizeData {
 pub struct ChatHandler {}
 
 impl ChatHandler {
-    pub async fn handle_chat_message(connection: &mut ZoneConnection, chat_message: &ChatMessage) {
+    pub async fn handle_chat_message(
+        connection: &mut ZoneConnection,
+        lua_player: &mut LuaPlayer,
+        chat_message: &ChatMessage,
+    ) {
         tracing::info!("Client sent chat message: {}!", chat_message.message);
 
         let parts: Vec<&str> = chat_message.message.split(' ').collect();
@@ -322,34 +329,12 @@ impl ChatHandler {
                         .await;
                 }
 
-                // play the scene, bart
-                {
-                    let ipc = ServerZoneIpcSegment {
-                        unk1: 20,
-                        unk2: 0,
-                        op_code: ServerZoneIpcType::EventPlay,
-                        server_id: 0,
-                        timestamp: timestamp_secs(),
-                        data: ServerZoneIpcData::EventPlay(EventPlay {
-                            actor_id: ObjectTypeId {
-                                object_id: ObjectId(connection.player_data.actor_id),
-                                object_type: 0,
-                            },
-                            event_id: 0x130003,
-                            scene: 1,
-                            scene_flags: 4959237,
-                            ..Default::default()
-                        }),
-                    };
-
+                connection.event = Some(Event::new("opening/OpeningUldah.lua"));
                 connection
-                        .send_segment(PacketSegment {
-                            source_actor: connection.player_data.actor_id,
-                            target_actor: connection.player_data.actor_id,
-                            segment_type: SegmentType::Ipc { data: ipc },
-                        })
-                        .await;
-                }
+                    .event
+                    .as_mut()
+                    .unwrap()
+                    .enter_territory(lua_player);
             }
             _ => tracing::info!("Unrecognized debug command!"),
         }

src/world/connection.rs

@@ -10,7 +10,7 @@ use crate::{
 };
 
 use super::{
-    Inventory, Item, LuaPlayer, Zone,
+    Event, Inventory, Item, LuaPlayer, Zone,
     ipc::{
         ActorSetPos, ClientZoneIpcSegment, ContainerInfo, ContainerType, InitZone, ItemInfo,
         ServerZoneIpcData, ServerZoneIpcSegment, StatusEffect, StatusEffectList, UpdateClassInfo,
@@ -69,6 +69,8 @@ pub struct ZoneConnection {
     pub position: Position,
     pub inventory: Inventory,
     pub status_effects: StatusEffects,
+
+    pub event: Option<Event>,
 }
 
 impl ZoneConnection {

src/world/event.rs

@@ -0,0 +1,52 @@
+use mlua::{Function, Lua};
+
+use crate::config::get_config;
+
+use super::LuaPlayer;
+
+pub struct Event {
+    lua: Lua,
+}
+
+impl Event {
+    pub fn new(path: &str) -> Self {
+        let lua = Lua::new();
+
+        let config = get_config();
+        let file_name = format!("{}/{}", &config.world.scripts_location, path);
+        lua.load(std::fs::read(&file_name).expect("Failed to locate scripts directory!"))
+            .set_name("@".to_string() + &file_name)
+            .exec()
+            .unwrap();
+
+        Self { lua }
+    }
+
+    pub fn enter_territory(&mut self, player: &mut LuaPlayer) {
+        self.lua
+            .scope(|scope| {
+                let player = scope.create_userdata_ref_mut(player).unwrap();
+
+                let func: Function = self.lua.globals().get("onEnterTerritory").unwrap();
+
+                func.call::<()>(player).unwrap();
+
+                Ok(())
+            })
+            .unwrap();
+    }
+
+    pub fn scene_finished(&mut self, player: &mut LuaPlayer, scene: u16) {
+        self.lua
+            .scope(|scope| {
+                let player = scope.create_userdata_ref_mut(player).unwrap();
+
+                let func: Function = self.lua.globals().get("onSceneFinished").unwrap();
+
+                func.call::<()>((player, scene)).unwrap();
+
+                Ok(())
+            })
+            .unwrap();
+    }
+}

src/world/ipc/mod.rs

@@ -337,7 +337,8 @@ pub enum ClientZoneIpcData {
     #[br(pre_assert(*magic == ClientZoneIpcType::EventRelatedUnk))]
     EventRelatedUnk {
         unk1: u32,
-        unk2: u32,
+        unk2: u16,
+        #[brw(pad_before = 2)]
         unk3: u32,
         unk4: u32,
     },

src/world/lua.rs

@@ -1,14 +1,14 @@
 use mlua::{UserData, UserDataMethods};
 
 use crate::{
-    common::timestamp_secs,
+    common::{ObjectId, ObjectTypeId, timestamp_secs},
     opcodes::ServerZoneIpcType,
     packet::{PacketSegment, SegmentType},
 };
 
 use super::{
     PlayerData, StatusEffects,
-    ipc::{ServerZoneIpcData, ServerZoneIpcSegment},
+    ipc::{EventPlay, ServerZoneIpcData, ServerZoneIpcSegment},
 };
 
 #[derive(Default)]
@@ -44,6 +44,33 @@ impl LuaPlayer {
     fn give_status_effect(&mut self, effect_id: u16, duration: f32) {
         self.status_effects.add(effect_id, duration);
     }
+
+    fn play_scene(&mut self, event_id: u32, scene: u16, scene_flags: u32, param: u8) {
+        let ipc = ServerZoneIpcSegment {
+            unk1: 20,
+            unk2: 0,
+            op_code: ServerZoneIpcType::EventPlay,
+            server_id: 0,
+            timestamp: timestamp_secs(),
+            data: ServerZoneIpcData::EventPlay(EventPlay {
+                actor_id: ObjectTypeId {
+                    object_id: ObjectId(self.player_data.actor_id),
+                    object_type: 0,
+                },
+                event_id,
+                scene,
+                scene_flags,
+                unk2: param,
+                ..Default::default()
+            }),
+        };
+
+        self.queue_segment(PacketSegment {
+            source_actor: self.player_data.actor_id,
+            target_actor: self.player_data.actor_id,
+            segment_type: SegmentType::Ipc { data: ipc },
+        });
+    }
 }
 
 impl UserData for LuaPlayer {
@@ -59,5 +86,12 @@ impl UserData for LuaPlayer {
                 Ok(())
             },
         );
+        methods.add_method_mut(
+            "play_scene",
+            |_, this, (event_id, scene, scene_flags, param): (u32, u16, u32, u8)| {
+                this.play_scene(event_id, scene, scene_flags, param);
+                Ok(())
+            },
+        );
     }
 }

src/world/mod.rs

@@ -17,3 +17,6 @@ pub use inventory::{EquippedContainer, Inventory, Item};
 
 mod lua;
 pub use lua::LuaPlayer;
+
+mod event;
+pub use event::Event;