Add support for the GM command to change the weather

You can now change the weather with `//gm weather <id>`.

src/bin/kawari-world.rs

@@ -500,6 +500,9 @@ async fn main() {
                                         tracing::info!("Got a game master command!");
 
                                         match &command {
+                                            GameMasterCommandType::ChangeWeather => {
+                                                connection.change_weather(*arg as u16).await
+                                            }
                                             GameMasterCommandType::ChangeTerritory => {
                                                 connection.change_zone(*arg as u16).await
                                             }

src/world/chat_handler.rs

@@ -1,4 +1,3 @@
-
 use crate::{
     CHAR_NAME, CUSTOMIZE_DATA, INVALID_OBJECT_ID, WORLD_ID,
     common::timestamp_secs,

src/world/connection.rs

@@ -12,7 +12,7 @@ use super::{
     Zone,
     ipc::{
         ActorSetPos, ClientZoneIpcSegment, InitZone, Position, ServerZoneIpcData,
-        ServerZoneIpcSegment, ServerZoneIpcType, UpdateClassInfo,
+        ServerZoneIpcSegment, ServerZoneIpcType, UpdateClassInfo, WeatherChange,
     },
 };
 
@@ -137,6 +137,25 @@ impl ZoneConnection {
         }
     }
 
+    pub async fn change_weather(&mut self, new_weather_id: u16) {
+        let ipc = ServerZoneIpcSegment {
+            op_code: ServerZoneIpcType::WeatherChange,
+            timestamp: timestamp_secs(),
+            data: ServerZoneIpcData::WeatherChange(WeatherChange {
+                weather_id: new_weather_id,
+                transistion_time: 1.0,
+            }),
+            ..Default::default()
+        };
+
+        self.send_segment(PacketSegment {
+            source_actor: self.player_id,
+            target_actor: self.player_id,
+            segment_type: SegmentType::Ipc { data: ipc },
+        })
+        .await;
+    }
+
     pub fn get_free_spawn_index(&mut self) -> u8 {
         self.spawn_index += 1;
         self.spawn_index

src/world/ipc/mod.rs

@@ -44,6 +44,9 @@ pub use common_spawn::{CharacterMode, CommonSpawn, ObjectKind};
 mod status_effect_list;
 pub use status_effect_list::StatusEffectList;
 
+mod weather_change;
+pub use weather_change::WeatherChange;
+
 use crate::common::read_string;
 use crate::common::write_string;
 use crate::packet::IpcSegment;
@@ -87,7 +90,6 @@ impl ReadWriteIpcSegment for ServerZoneIpcSegment {
             ServerZoneIpcType::Unk8 => 808,
             ServerZoneIpcType::LinkShellInformation => 456,
             ServerZoneIpcType::Unk9 => 24,
-            ServerZoneIpcType::Unk10 => 8,
             ServerZoneIpcType::Unk11 => 32,
             ServerZoneIpcType::Unk15 => 8,
             ServerZoneIpcType::Unk16 => 136,
@@ -98,6 +100,7 @@ impl ReadWriteIpcSegment for ServerZoneIpcSegment {
             ServerZoneIpcType::PrepareZoning => 16,
             ServerZoneIpcType::NpcSpawn => 648,
             ServerZoneIpcType::StatusEffectList => 384,
+            ServerZoneIpcType::WeatherChange => 8,
         }
     }
 }
@@ -130,6 +133,7 @@ pub struct ActorSetPos {
 #[brw(repr = u8)]
 #[derive(Clone, PartialEq, Debug)]
 pub enum GameMasterCommandType {
+    ChangeWeather = 0x6,
     ChangeTerritory = 0x58,
 }
 
@@ -165,9 +169,6 @@ pub enum ServerZoneIpcType {
     LinkShellInformation = 0x234,
     // Unknown, server sends to the client before player spawn
     Unk9 = 0x189,
-    // Unknown, server sends to the client before player spawn.
-    // Seems to the same across two different characters?
-    Unk10 = 0x110,
     // Unknown, server sends this in response to Unk7
     Unk11 = 0x156,
     // Sent by the server when it wants the client to... prepare to zone?
@@ -188,6 +189,8 @@ pub enum ServerZoneIpcType {
     NpcSpawn = 0x100,
     // Sent by the server to update an actor's status effect list
     StatusEffectList = 0xBB,
+    // Sent by the server when it's time to change the weather
+    WeatherChange = 0x110,
 }
 
 #[binrw]
@@ -273,9 +276,6 @@ pub enum ServerZoneIpcData {
     Unk9 {
         unk: [u8; 24],
     },
-    Unk10 {
-        unk: u64,
-    },
     Unk11 {
         timestamp: u32,
         #[brw(pad_after = 24)] // empty bytes
@@ -302,6 +302,7 @@ pub enum ServerZoneIpcData {
     SocialList(SocialList),
     NpcSpawn(NpcSpawn),
     StatusEffectList(StatusEffectList),
+    WeatherChange(WeatherChange),
 }
 
 #[binrw]
@@ -456,6 +457,10 @@ mod tests {
                 ServerZoneIpcType::StatusEffectList,
                 ServerZoneIpcData::StatusEffectList(StatusEffectList::default()),
             ),
+            (
+                ServerZoneIpcType::WeatherChange,
+                ServerZoneIpcData::WeatherChange(WeatherChange::default()),
+            ),
         ];
 
         for (opcode, data) in &ipc_types {

src/world/ipc/npc_spawn.rs

@@ -1,6 +1,5 @@
 use binrw::binrw;
 
-
 use super::CommonSpawn;
 
 #[binrw]

src/world/ipc/player_spawn.rs

@@ -1,6 +1,5 @@
 use binrw::binrw;
 
-
 use super::CommonSpawn;
 
 #[binrw]

src/world/ipc/weather_change.rs

@@ -0,0 +1,9 @@
+use binrw::binrw;
+
+#[binrw]
+#[derive(Debug, Clone, Copy, Default)]
+pub struct WeatherChange {
+    pub weather_id: u16,
+    #[brw(pad_before = 3)]
+    pub transistion_time: f32,
+}