From e6880a5feea1314cb35e03f5a283ab003e50e237 Mon Sep 17 00:00:00 2001
From: Agent X <44549182+AgentXLP@users.noreply.github.com>
Date: Sat, 11 May 2024 17:55:18 -0400
Subject: [PATCH] Add new networked water level functions

---
 autogen/convert_functions.py                  |   4 +-
 autogen/lua_definitions/functions.lua         |  40 ++++--
 docs/lua/functions-3.md                       |   2 +-
 docs/lua/functions-5.md                       |  83 ++++++------
 docs/lua/functions.md                         |   4 +-
 src/pc/lua/smlua_functions_autogen.c          | 118 ++++++++++++------
 src/pc/lua/utils/smlua_deprecated.c           |  17 +++
 src/pc/lua/utils/smlua_deprecated.h           |   3 +
 src/pc/lua/utils/smlua_misc_utils.c           |  36 +++---
 src/pc/lua/utils/smlua_misc_utils.h           |   8 +-
 src/pc/network/packets/packet.c               |   1 +
 src/pc/network/packets/packet.h               |   5 +
 .../packets/packet_change_water_level.c       |  22 ++++
 13 files changed, 227 insertions(+), 116 deletions(-)
 create mode 100644 src/pc/network/packets/packet_change_water_level.c

diff --git a/autogen/convert_functions.py b/autogen/convert_functions.py
index d3f0d036d..c510b54bf 100644
--- a/autogen/convert_functions.py
+++ b/autogen/convert_functions.py
@@ -894,7 +894,7 @@ def process_function(fname, line):
 
     line = line.replace('UNUSED', '')
 
-    match = re.search('[a-zA-Z0-9_]+\(', line)
+    match = re.search(r'[a-zA-Z0-9_]+\(', line)
     function['type'] = normalize_type(line[0:match.span()[0]])
     function['identifier'] = match.group()[0:-1]
 
@@ -911,7 +911,7 @@ def process_function(fname, line):
                 param['type'] = normalize_type(param_str)
                 param['identifier'] = 'arg%d' % param_index
             else:
-                match = re.search('[a-zA-Z0-9_\[\]]+$', param_str)
+                match = re.search(r'[a-zA-Z0-9_\[\]]+$', param_str)
                 if match == None:
                     return None
                 param['type'] = normalize_type(param_str[0:match.span()[0]])
diff --git a/autogen/lua_definitions/functions.lua b/autogen/lua_definitions/functions.lua
index 09000fb0e..545fb5ea1 100644
--- a/autogen/lua_definitions/functions.lua
+++ b/autogen/lua_definitions/functions.lua
@@ -8611,12 +8611,25 @@ function djui_hud_set_render_behind_hud(enable)
     -- ...
 end
 
+--- @param index integer
+--- @return number
+function get_environment_region(index)
+    -- ...
+end
+
 --- @param localIndex integer
 --- @return string
 function network_discord_id_from_local_index(localIndex)
     -- ...
 end
 
+--- @param index integer
+--- @param value integer
+--- @return nil
+function set_environment_region(index, value)
+    -- ...
+end
+
 --- @param levelNum integer
 --- @return boolean
 function level_is_vanilla_level(levelNum)
@@ -8980,12 +8993,6 @@ function get_envfx()
     -- ...
 end
 
---- @param index integer
---- @return number
-function get_environment_region(index)
-    -- ...
-end
-
 --- @param index integer
 --- @return integer
 function get_fog_color(index)
@@ -9097,6 +9104,12 @@ function get_vertex_color(index)
     -- ...
 end
 
+--- @param index integer
+--- @return integer
+function get_water_level(index)
+    -- ...
+end
+
 --- @return integer
 function hud_get_flash()
     -- ...
@@ -9205,13 +9218,6 @@ function save_file_set_using_backup_slot(usingBackupSlot)
     -- ...
 end
 
---- @param index integer
---- @param value integer
---- @return nil
-function set_environment_region(index, value)
-    -- ...
-end
-
 --- @param index integer
 --- @param value integer
 --- @return nil
@@ -9312,6 +9318,14 @@ function set_vertex_color(index, value)
     -- ...
 end
 
+--- @param index integer
+--- @param height integer
+--- @param sync boolean
+--- @return nil
+function set_water_level(index, height, sync)
+    -- ...
+end
+
 --- @param title string
 --- @return nil
 function set_window_title(title)
diff --git a/docs/lua/functions-3.md b/docs/lua/functions-3.md
index 371ec0b04..81038747d 100644
--- a/docs/lua/functions-3.md
+++ b/docs/lua/functions-3.md
@@ -4858,7 +4858,7 @@
 - `integer`
 
 ### C Prototype
-`s32 lvl_set_current_level(UNUSED s16 arg0, s32 levelNum);`
+`s32 lvl_set_current_level(UNUSED s16 arg0, s16 levelNum);`
 
 [:arrow_up_small:](#)
 
diff --git a/docs/lua/functions-5.md b/docs/lua/functions-5.md
index b262b4cd2..692c48651 100644
--- a/docs/lua/functions-5.md
+++ b/docs/lua/functions-5.md
@@ -1353,26 +1353,6 @@
 
 <br />
 
-## [get_environment_region](#get_environment_region)
-
-### Lua Example
-`local numberValue = get_environment_region(index)`
-
-### Parameters
-| Field | Type |
-| ----- | ---- |
-| index | `integer` |
-
-### Returns
-- `number`
-
-### C Prototype
-`f32 get_environment_region(u8 index);`
-
-[:arrow_up_small:](#)
-
-<br />
-
 ## [get_fog_color](#get_fog_color)
 
 ### Lua Example
@@ -1752,6 +1732,26 @@
 
 <br />
 
+## [get_water_level](#get_water_level)
+
+### Lua Example
+`local integerValue = get_water_level(index)`
+
+### Parameters
+| Field | Type |
+| ----- | ---- |
+| index | `integer` |
+
+### Returns
+- `integer`
+
+### C Prototype
+`s16 get_water_level(u8 index);`
+
+[:arrow_up_small:](#)
+
+<br />
+
 ## [hud_get_flash](#hud_get_flash)
 
 ### Lua Example
@@ -2076,27 +2076,6 @@
 
 <br />
 
-## [set_environment_region](#set_environment_region)
-
-### Lua Example
-`set_environment_region(index, value)`
-
-### Parameters
-| Field | Type |
-| ----- | ---- |
-| index | `integer` |
-| value | `integer` |
-
-### Returns
-- None
-
-### C Prototype
-`void set_environment_region(u8 index, s32 value);`
-
-[:arrow_up_small:](#)
-
-<br />
-
 ## [set_fog_color](#set_fog_color)
 
 ### Lua Example
@@ -2421,6 +2400,28 @@
 
 <br />
 
+## [set_water_level](#set_water_level)
+
+### Lua Example
+`set_water_level(index, height, sync)`
+
+### Parameters
+| Field | Type |
+| ----- | ---- |
+| index | `integer` |
+| height | `integer` |
+| sync | `boolean` |
+
+### Returns
+- None
+
+### C Prototype
+`void set_water_level(u8 index, s16 height, bool sync);`
+
+[:arrow_up_small:](#)
+
+<br />
+
 ## [set_window_title](#set_window_title)
 
 ### Lua Example
diff --git a/docs/lua/functions.md b/docs/lua/functions.md
index 9f09a0b64..bb7aec868 100644
--- a/docs/lua/functions.md
+++ b/docs/lua/functions.md
@@ -1668,7 +1668,6 @@
    - [get_dialog_id](functions-5.md#get_dialog_id)
    - [get_dialog_response](functions-5.md#get_dialog_response)
    - [get_envfx](functions-5.md#get_envfx)
-   - [get_environment_region](functions-5.md#get_environment_region)
    - [get_fog_color](functions-5.md#get_fog_color)
    - [get_fog_intensity](functions-5.md#get_fog_intensity)
    - [get_global_timer](functions-5.md#get_global_timer)
@@ -1689,6 +1688,7 @@
    - [get_time](functions-5.md#get_time)
    - [get_ttc_speed_setting](functions-5.md#get_ttc_speed_setting)
    - [get_vertex_color](functions-5.md#get_vertex_color)
+   - [get_water_level](functions-5.md#get_water_level)
    - [hud_get_flash](functions-5.md#hud_get_flash)
    - [hud_get_value](functions-5.md#hud_get_value)
    - [hud_hide](functions-5.md#hud_hide)
@@ -1705,7 +1705,6 @@
    - [reset_window_title](functions-5.md#reset_window_title)
    - [save_file_get_using_backup_slot](functions-5.md#save_file_get_using_backup_slot)
    - [save_file_set_using_backup_slot](functions-5.md#save_file_set_using_backup_slot)
-   - [set_environment_region](functions-5.md#set_environment_region)
    - [set_fog_color](functions-5.md#set_fog_color)
    - [set_fog_intensity](functions-5.md#set_fog_intensity)
    - [set_got_file_coin_hi_score](functions-5.md#set_got_file_coin_hi_score)
@@ -1722,6 +1721,7 @@
    - [set_save_file_modified](functions-5.md#set_save_file_modified)
    - [set_ttc_speed_setting](functions-5.md#set_ttc_speed_setting)
    - [set_vertex_color](functions-5.md#set_vertex_color)
+   - [set_water_level](functions-5.md#set_water_level)
    - [set_window_title](functions-5.md#set_window_title)
 
 <br />
diff --git a/src/pc/lua/smlua_functions_autogen.c b/src/pc/lua/smlua_functions_autogen.c
index fb087f22d..bb3f88612 100644
--- a/src/pc/lua/smlua_functions_autogen.c
+++ b/src/pc/lua/smlua_functions_autogen.c
@@ -14636,7 +14636,7 @@ int smlua_func_lvl_set_current_level(lua_State* L) {
 
     s16 arg0 = smlua_to_integer(L, 1);
     if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "lvl_set_current_level"); return 0; }
-    s32 levelNum = smlua_to_integer(L, 2);
+    s16 levelNum = smlua_to_integer(L, 2);
     if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 2, "lvl_set_current_level"); return 0; }
 
     lua_pushinteger(L, lvl_set_current_level(arg0, levelNum));
@@ -28451,6 +28451,23 @@ int smlua_func_djui_hud_set_render_behind_hud(lua_State* L) {
     return 1;
 }
 
+int smlua_func_get_environment_region(lua_State* L) {
+    if (L == NULL) { return 0; }
+
+    int top = lua_gettop(L);
+    if (top != 1) {
+        LOG_LUA_LINE("Improper param count for '%s': Expected %u, Received %u", "get_environment_region", 1, top);
+        return 0;
+    }
+
+    u8 index = smlua_to_integer(L, 1);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "get_environment_region"); return 0; }
+
+    lua_pushnumber(L, get_environment_region(index));
+
+    return 1;
+}
+
 int smlua_func_network_discord_id_from_local_index(lua_State* L) {
     if (L == NULL) { return 0; }
 
@@ -28468,6 +28485,25 @@ int smlua_func_network_discord_id_from_local_index(lua_State* L) {
     return 1;
 }
 
+int smlua_func_set_environment_region(lua_State* L) {
+    if (L == NULL) { return 0; }
+
+    int top = lua_gettop(L);
+    if (top != 2) {
+        LOG_LUA_LINE("Improper param count for '%s': Expected %u, Received %u", "set_environment_region", 2, top);
+        return 0;
+    }
+
+    u8 index = smlua_to_integer(L, 1);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "set_environment_region"); return 0; }
+    s32 value = smlua_to_integer(L, 2);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 2, "set_environment_region"); return 0; }
+
+    set_environment_region(index, value);
+
+    return 1;
+}
+
   /////////////////////////
  // smlua_level_utils.h //
 /////////////////////////
@@ -29511,23 +29547,6 @@ int smlua_func_get_envfx(UNUSED lua_State* L) {
     return 1;
 }
 
-int smlua_func_get_environment_region(lua_State* L) {
-    if (L == NULL) { return 0; }
-
-    int top = lua_gettop(L);
-    if (top != 1) {
-        LOG_LUA_LINE("Improper param count for '%s': Expected %u, Received %u", "get_environment_region", 1, top);
-        return 0;
-    }
-
-    u8 index = smlua_to_integer(L, 1);
-    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "get_environment_region"); return 0; }
-
-    lua_pushnumber(L, get_environment_region(index));
-
-    return 1;
-}
-
 int smlua_func_get_fog_color(lua_State* L) {
     if (L == NULL) { return 0; }
 
@@ -29850,6 +29869,23 @@ int smlua_func_get_vertex_color(lua_State* L) {
     return 1;
 }
 
+int smlua_func_get_water_level(lua_State* L) {
+    if (L == NULL) { return 0; }
+
+    int top = lua_gettop(L);
+    if (top != 1) {
+        LOG_LUA_LINE("Improper param count for '%s': Expected %u, Received %u", "get_water_level", 1, top);
+        return 0;
+    }
+
+    u8 index = smlua_to_integer(L, 1);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "get_water_level"); return 0; }
+
+    lua_pushinteger(L, get_water_level(index));
+
+    return 1;
+}
+
 int smlua_func_hud_get_flash(UNUSED lua_State* L) {
     if (L == NULL) { return 0; }
 
@@ -30146,25 +30182,6 @@ int smlua_func_save_file_set_using_backup_slot(lua_State* L) {
     return 1;
 }
 
-int smlua_func_set_environment_region(lua_State* L) {
-    if (L == NULL) { return 0; }
-
-    int top = lua_gettop(L);
-    if (top != 2) {
-        LOG_LUA_LINE("Improper param count for '%s': Expected %u, Received %u", "set_environment_region", 2, top);
-        return 0;
-    }
-
-    u8 index = smlua_to_integer(L, 1);
-    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "set_environment_region"); return 0; }
-    s32 value = smlua_to_integer(L, 2);
-    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 2, "set_environment_region"); return 0; }
-
-    set_environment_region(index, value);
-
-    return 1;
-}
-
 int smlua_func_set_fog_color(lua_State* L) {
     if (L == NULL) { return 0; }
 
@@ -30445,6 +30462,27 @@ int smlua_func_set_vertex_color(lua_State* L) {
     return 1;
 }
 
+int smlua_func_set_water_level(lua_State* L) {
+    if (L == NULL) { return 0; }
+
+    int top = lua_gettop(L);
+    if (top != 3) {
+        LOG_LUA_LINE("Improper param count for '%s': Expected %u, Received %u", "set_water_level", 3, top);
+        return 0;
+    }
+
+    u8 index = smlua_to_integer(L, 1);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 1, "set_water_level"); return 0; }
+    s16 height = smlua_to_integer(L, 2);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 2, "set_water_level"); return 0; }
+    bool sync = smlua_to_boolean(L, 3);
+    if (!gSmLuaConvertSuccess) { LOG_LUA("Failed to convert parameter %u for function '%s'", 3, "set_water_level"); return 0; }
+
+    set_water_level(index, height, sync);
+
+    return 1;
+}
+
 int smlua_func_set_window_title(lua_State* L) {
     if (L == NULL) { return 0; }
 
@@ -33622,7 +33660,9 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "audio_stream_set_speed", smlua_func_audio_stream_set_speed);
     smlua_bind_function(L, "audio_stream_set_tempo", smlua_func_audio_stream_set_tempo);
     smlua_bind_function(L, "djui_hud_set_render_behind_hud", smlua_func_djui_hud_set_render_behind_hud);
+    smlua_bind_function(L, "get_environment_region", smlua_func_get_environment_region);
     smlua_bind_function(L, "network_discord_id_from_local_index", smlua_func_network_discord_id_from_local_index);
+    smlua_bind_function(L, "set_environment_region", smlua_func_set_environment_region);
 
     // smlua_level_utils.h
     smlua_bind_function(L, "level_is_vanilla_level", smlua_func_level_is_vanilla_level);
@@ -33690,7 +33730,6 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "get_dialog_id", smlua_func_get_dialog_id);
     smlua_bind_function(L, "get_dialog_response", smlua_func_get_dialog_response);
     smlua_bind_function(L, "get_envfx", smlua_func_get_envfx);
-    smlua_bind_function(L, "get_environment_region", smlua_func_get_environment_region);
     smlua_bind_function(L, "get_fog_color", smlua_func_get_fog_color);
     smlua_bind_function(L, "get_fog_intensity", smlua_func_get_fog_intensity);
     smlua_bind_function(L, "get_global_timer", smlua_func_get_global_timer);
@@ -33711,6 +33750,7 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "get_time", smlua_func_get_time);
     smlua_bind_function(L, "get_ttc_speed_setting", smlua_func_get_ttc_speed_setting);
     smlua_bind_function(L, "get_vertex_color", smlua_func_get_vertex_color);
+    smlua_bind_function(L, "get_water_level", smlua_func_get_water_level);
     smlua_bind_function(L, "hud_get_flash", smlua_func_hud_get_flash);
     smlua_bind_function(L, "hud_get_value", smlua_func_hud_get_value);
     smlua_bind_function(L, "hud_hide", smlua_func_hud_hide);
@@ -33727,7 +33767,6 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "reset_window_title", smlua_func_reset_window_title);
     smlua_bind_function(L, "save_file_get_using_backup_slot", smlua_func_save_file_get_using_backup_slot);
     smlua_bind_function(L, "save_file_set_using_backup_slot", smlua_func_save_file_set_using_backup_slot);
-    smlua_bind_function(L, "set_environment_region", smlua_func_set_environment_region);
     smlua_bind_function(L, "set_fog_color", smlua_func_set_fog_color);
     smlua_bind_function(L, "set_fog_intensity", smlua_func_set_fog_intensity);
     smlua_bind_function(L, "set_got_file_coin_hi_score", smlua_func_set_got_file_coin_hi_score);
@@ -33744,6 +33783,7 @@ void smlua_bind_functions_autogen(void) {
     smlua_bind_function(L, "set_save_file_modified", smlua_func_set_save_file_modified);
     smlua_bind_function(L, "set_ttc_speed_setting", smlua_func_set_ttc_speed_setting);
     smlua_bind_function(L, "set_vertex_color", smlua_func_set_vertex_color);
+    smlua_bind_function(L, "set_water_level", smlua_func_set_water_level);
     smlua_bind_function(L, "set_window_title", smlua_func_set_window_title);
 
     // smlua_model_utils.h
diff --git a/src/pc/lua/utils/smlua_deprecated.c b/src/pc/lua/utils/smlua_deprecated.c
index 016059959..b8a556bd5 100644
--- a/src/pc/lua/utils/smlua_deprecated.c
+++ b/src/pc/lua/utils/smlua_deprecated.c
@@ -4,6 +4,8 @@
 #include "pc/discord/discord.h"
 #endif
 #include "pc/lua/smlua.h"
+#include "game/hardcoded.h"
+#include "game/object_list_processor.h"
 
 char* network_discord_id_from_local_index(UNUSED u8 localIndex) {
 #ifdef DISCORD_SDK
@@ -34,3 +36,18 @@ void audio_stream_set_tempo(UNUSED struct ModAudio* audio, UNUSED f32 tempo) {
 
 void audio_stream_set_speed(UNUSED struct ModAudio* audio, UNUSED f32 initial_freq, UNUSED f32 speed, UNUSED bool pitch) {
 }
+
+f32 get_environment_region(u8 index) {
+    s32 idx = 6 * index;
+    if (gEnvironmentRegions != NULL && index > 0 && index <= gEnvironmentRegions[0] && gEnvironmentRegionsLength > idx) {
+        return gEnvironmentRegions[idx];
+    }
+    return gLevelValues.floorLowerLimit;
+}
+
+void set_environment_region(u8 index, s32 value) {
+    s32 idx = 6 * index;
+    if (gEnvironmentRegions != NULL && index > 0 && index <= gEnvironmentRegions[0] && gEnvironmentRegionsLength > idx) {
+        gEnvironmentRegions[idx] = value;
+    }
+}
diff --git a/src/pc/lua/utils/smlua_deprecated.h b/src/pc/lua/utils/smlua_deprecated.h
index 695355db8..7a0258f9b 100644
--- a/src/pc/lua/utils/smlua_deprecated.h
+++ b/src/pc/lua/utils/smlua_deprecated.h
@@ -7,3 +7,6 @@ struct ModAudio* audio_stream_load_url(const char* url);
 f32 audio_stream_get_tempo(struct ModAudio* audio);
 void audio_stream_set_tempo(struct ModAudio* audio, f32 tempo);
 void audio_stream_set_speed(struct ModAudio* audio, f32 initial_freq, f32 speed, bool pitch);
+
+f32 get_environment_region(u8 index);
+void set_environment_region(u8 index, s32 value);
diff --git a/src/pc/lua/utils/smlua_misc_utils.c b/src/pc/lua/utils/smlua_misc_utils.c
index 7dbf55aca..7df4588c2 100644
--- a/src/pc/lua/utils/smlua_misc_utils.c
+++ b/src/pc/lua/utils/smlua_misc_utils.c
@@ -472,18 +472,26 @@ void movtexqc_register(const char* name, s16 level, s16 area, s16 type) {
 
 ///
 
-f32 get_environment_region(u8 index) {
-    s32 idx = 6 * index;
-    if (gEnvironmentRegions != NULL && index > 0 && index <= gEnvironmentRegions[0] && gEnvironmentRegionsLength > idx) {
-        return gEnvironmentRegions[idx];
+s16 get_water_level(u8 index) {
+    u8 id = 6 * (index + 1);
+    if (gEnvironmentRegions && index < gEnvironmentRegions[0] && gEnvironmentRegionsLength > id) {
+        return gEnvironmentRegions[id];
     }
     return gLevelValues.floorLowerLimit;
 }
 
-void set_environment_region(u8 index, s32 value) {
-    s32 idx = 6 * index;
-    if (gEnvironmentRegions != NULL && index > 0 && index <= gEnvironmentRegions[0] && gEnvironmentRegionsLength > idx) {
-        gEnvironmentRegions[idx] = value;
+void set_water_level(u8 index, s16 height, bool sync) {
+    if (sync && (!gNetworkPlayerLocal || !gNetworkPlayerLocal->currAreaSyncValid)) { return; }
+
+    u8 id = 6 * (index + 1);
+    if (gEnvironmentRegions && index < gEnvironmentRegions[0] && gEnvironmentRegionsLength > id) {
+        if (gEnvironmentRegions[id] == height) {
+            return;
+        }
+        if (sync) {
+            network_send_change_water_level(id, height);
+        }
+        gEnvironmentRegions[id] = height;
     }
 }
 
@@ -623,6 +631,12 @@ u32 get_global_timer(void) {
 
 ///
 
+s32 get_dialog_response() {
+    return gDialogResponse;
+}
+
+///
+
 void set_window_title(const char* title) {
     WAPI.set_window_title(title);
 }
@@ -648,9 +662,3 @@ const char* get_os_name(void) {
     return "Unknown";
 #endif
 }
-
-///
-
-s32 get_dialog_response() {
-    return gDialogResponse;
-}
diff --git a/src/pc/lua/utils/smlua_misc_utils.h b/src/pc/lua/utils/smlua_misc_utils.h
index 6c253896c..cc9f331d5 100644
--- a/src/pc/lua/utils/smlua_misc_utils.h
+++ b/src/pc/lua/utils/smlua_misc_utils.h
@@ -117,8 +117,8 @@ bool save_file_get_using_backup_slot(void);
 void save_file_set_using_backup_slot(bool usingBackupSlot);
 
 void movtexqc_register(const char* name, s16 level, s16 area, s16 type);
-f32 get_environment_region(u8 index);
-void set_environment_region(u8 index, s32 value);
+s16 get_water_level(u8 index);
+void set_water_level(u8 index, s16 height, bool sync);
 
 void set_override_fov(f32 fov);
 void set_override_near(f32 near);
@@ -156,11 +156,11 @@ void set_override_envfx(s32 envfx);
 
 u32 get_global_timer(void);
 
+s32 get_dialog_response();
+
 void set_window_title(const char* title);
 void reset_window_title(void);
 
 const char* get_os_name(void);
 
-s32 get_dialog_response();
-
 #endif
diff --git a/src/pc/network/packets/packet.c b/src/pc/network/packets/packet.c
index 2284c6ea3..136d58f7c 100644
--- a/src/pc/network/packets/packet.c
+++ b/src/pc/network/packets/packet.c
@@ -117,6 +117,7 @@ void packet_process(struct Packet* p) {
         case PACKET_LEVEL_MACRO:             network_receive_level_macro(p);             break;
         case PACKET_LEVEL_AREA_INFORM:       network_receive_level_area_inform(p);       break;
         case PACKET_LEVEL_RESPAWN_INFO:      network_receive_level_respawn_info(p);      break;
+        case PACKET_CHANGE_WATER_LEVEL:      network_receive_change_water_level(p);      break;
 
         case PACKET_PLAYER_SETTINGS:         network_receive_player_settings(p);         break;
 
diff --git a/src/pc/network/packets/packet.h b/src/pc/network/packets/packet.h
index bde6844bb..22ef32125 100644
--- a/src/pc/network/packets/packet.h
+++ b/src/pc/network/packets/packet.h
@@ -53,6 +53,7 @@ enum PacketType {
     PACKET_LEVEL_MACRO,
     PACKET_LEVEL_AREA_INFORM,
     PACKET_LEVEL_RESPAWN_INFO,
+    PACKET_CHANGE_WATER_LEVEL,
 
     PACKET_PLAYER_SETTINGS,
 
@@ -332,6 +333,10 @@ void network_receive_level_area_inform(struct Packet* p);
 void network_send_level_respawn_info(struct Object* o, u8 respawnInfoBits);
 void network_receive_level_respawn_info(struct Packet* p);
 
+// packet_change_water_level.c
+void network_send_change_water_level(u8 index, s16 height);
+void network_receive_change_water_level(struct Packet* p);
+
 // packet_debug_sync.c
 void network_send_debug_sync(void);
 void network_receive_debug_sync(struct Packet* p);
diff --git a/src/pc/network/packets/packet_change_water_level.c b/src/pc/network/packets/packet_change_water_level.c
new file mode 100644
index 000000000..ee0392fa7
--- /dev/null
+++ b/src/pc/network/packets/packet_change_water_level.c
@@ -0,0 +1,22 @@
+#include "../network.h"
+#include "game/object_list_processor.h"
+
+void network_send_change_water_level(u8 index, s16 height) {
+    struct Packet p = { 0 };
+    packet_init(&p, PACKET_CHANGE_WATER_LEVEL, true, PLMT_AREA);
+    packet_write(&p, &index, sizeof(u8));
+    packet_write(&p, &height, sizeof(s16));
+
+    network_send(&p);
+}
+
+void network_receive_change_water_level(struct Packet* p) {
+    u8 index;
+    s16 height;
+    packet_read(p, &index, sizeof(u8));
+    packet_read(p, &height, sizeof(s16));
+
+    if (gEnvironmentRegions && index % 6 == 0 && gEnvironmentRegionsLength > index) {
+        gEnvironmentRegions[index] = height;
+    }
+}