Merge pull request #475 from camthesaxman/decompile_field_weather

decompile field_weather_effects

5 files changed, 2551 insertions, 1676 deletions

diff --git a/src/field/field_weather.c b/src/field/field_weather.c
index 80fe21c4b..ff7c2e4c4 100644
--- a/src/field/field_weather.c
+++ b/src/field/field_weather.c
@@ -28,10 +28,10 @@ struct WeatherPaletteData
 
 struct WeatherCallbacks
 {
-    void (*func0)(void);
-    void (*func1)(void);
-    void (*func2)(void);
-    u8 (*func3)(void);
+    void (*initVars)(void);
+    void (*main)(void);
+    void (*initAll)(void);
+    bool8 (*finish)(void);
 };
 
 extern struct Weather gWeather;
@@ -48,7 +48,7 @@ const u8 DroughtPaletteData_5[] = INCBIN_U8("graphics/weather/drought5.bin.lz");
 extern u8 (*gUnknown_0202FC48)[32];
 extern u8 gUnknown_0202F9E8[32];
 
-const u8 *const gUnknown_08396FA8[] =
+static const u8 *const sCompressedDroughtPalettes[] =
 {
     DroughtPaletteData_0,
     DroughtPaletteData_1,
@@ -65,83 +65,83 @@ const u8 *const gUnknown_08396FA8[] =
 // this file produces the same result as accessing gWeather directly.
 struct Weather *const gWeatherPtr = &gWeather;
 
-void sub_807CAE8(void);
-void nullsub_38(void);
-u8 sub_807CB0C(void);
-void sub_807DE78(void);
-void sub_807DEF4(void);
-void sub_807DEC4(void);
-u8 sub_807DF54(void);
-void sub_807DF9C(void);
-void nullsub_55(void);
-void sub_807DFC0(void);
-u8 sub_807DFD0(void);
+void None_Init(void);
+void None_Main(void);
+bool8 None_Finish(void);
+void Clouds_InitVars(void);
+void Clouds_Main(void);
+void Clouds_InitAll(void);
+bool8 Clouds_Finish(void);
+void Weather2_InitVars(void);
+void Weather2_Main(void);
+void Weather2_InitAll(void);
+bool8 Weather2_Finish(void);
 void LightRain_InitVars(void);
-void sub_807E400(void);
-void sub_807E3D0(void);
-u8 sub_807E460(void);
+void LightRain_Main(void);
+void LightRain_InitAll(void);
+bool8 LightRain_Finish(void);
 void Snow_InitVars(void);
-void snowflakes_progress2(void);
-void sub_807EA18(void);
-u8 sub_807EAC0(void);
-void sub_807EE80(void);
-void sub_807EFC0(void);
-void sub_807EEF4(void);
-u8 sub_807F34C(void);
-void sub_807F49C(void);
-void sub_807F52C(void);
-void sub_807F4FC(void);
-u8 sub_807F5EC(void);
-void sub_807F7F8(void);
-void sub_807F888(void);
-void sub_807F858(void);
-u8 sub_807F934(void);
-void sub_807FE9C(void);
-void sub_807FF4C(void);
-void sub_807FF1C(void);
-u8 sub_807FFC8(void);
-void sub_807FB24(void);
-void sub_807FBD8(void);
-void sub_807FBA8(void);
-u8 sub_807FC3C(void);
-void sub_807F49C(void);
-void sub_807F52C(void);
-void sub_807F4FC(void);
-u8 sub_807F5EC(void);
-void sub_8080430(void);
-void nullsub_56(void);
-void sub_8080460(void);
-u8 sub_8080470(void);
-void sub_807E110(void);
-void sub_807E174(void);
-void sub_807E144(void);
-u8 sub_807E258(void);
-void sub_807EF24(void);
-void sub_807EFC0(void);
-void sub_807EF90(void);
-u8 sub_807F34C(void);
-void sub_8080474(void);
-void sub_80804F8(void);
-void sub_80804C8(void);
-u8 sub_808056C(void);
-
-const struct WeatherCallbacks gUnknown_08396FC8[] =
+void Snow_Main(void);
+void Snow_InitAll(void);
+bool8 Snow_Finish(void);
+void MedRain_InitVars(void);
+void Rain_Main(void);
+void MedRain_InitAll(void);
+bool8 Rain_Finish(void);
+void Fog1_InitVars(void);
+void Fog1_Main(void);
+void Fog1_InitAll(void);
+bool8 Fog1_Finish(void);
+void Ash_InitVars(void);
+void Ash_Main(void);
+void Ash_InitAll(void);
+bool8 Ash_Finish(void);
+void Sandstorm_InitVars(void);
+void Sandstorm_Main(void);
+void Sandstorm_InitAll(void);
+bool8 Sandstorm_Finish(void);
+void Fog2_InitVars(void);
+void Fog2_Main(void);
+void Fog2_InitAll(void);
+bool8 Fog2_Finish(void);
+void Fog1_InitVars(void);
+void Fog1_Main(void);
+void Fog1_InitAll(void);
+bool8 Fog1_Finish(void);
+void Weather11_InitVars(void);
+void Weather11_Main(void);
+void Weather11_InitAll(void);
+bool8 Weather11_Finish(void);
+void Drought_InitVars(void);
+void Drought_Main(void);
+void Drought_InitAll(void);
+bool8 Drought_Finish(void);
+void HeavyRain_InitVars(void);
+void Rain_Main(void);
+void HeavyRain_InitAll(void);
+bool8 Rain_Finish(void);
+void Bubbles_InitVars(void);
+void Bubbles_Main(void);
+void Bubbles_InitAll(void);
+bool8 Bubbles_Finish(void);
+
+static const struct WeatherCallbacks sWeatherFuncs[] =
 {
-    {sub_807CAE8, nullsub_38, sub_807CAE8, sub_807CB0C},
-    {sub_807DE78, sub_807DEF4, sub_807DEC4, sub_807DF54},
-    {sub_807DF9C, nullsub_55, sub_807DFC0, sub_807DFD0},
-    {LightRain_InitVars, sub_807E400, sub_807E3D0, sub_807E460},           // light rain
-    {Snow_InitVars, snowflakes_progress2, sub_807EA18, sub_807EAC0},  // snow
-    {sub_807EE80, sub_807EFC0, sub_807EEF4, sub_807F34C},
-    {sub_807F49C, sub_807F52C, sub_807F4FC, sub_807F5EC},
-    {sub_807F7F8, sub_807F888, sub_807F858, sub_807F934},
-    {sub_807FE9C, sub_807FF4C, sub_807FF1C, sub_807FFC8},
-    {sub_807FB24, sub_807FBD8, sub_807FBA8, sub_807FC3C},
-    {sub_807F49C, sub_807F52C, sub_807F4FC, sub_807F5EC},
-    {sub_8080430, nullsub_56, sub_8080460, sub_8080470},
-    {sub_807E110, sub_807E174, sub_807E144, sub_807E258},
-    {sub_807EF24, sub_807EFC0, sub_807EF90, sub_807F34C},
-    {sub_8080474, sub_80804F8, sub_80804C8, sub_808056C},
+    {None_Init,          None_Main,      None_Init,         None_Finish},
+    {Clouds_InitVars,    Clouds_Main,    Clouds_InitAll,    Clouds_Finish},
+    {Weather2_InitVars,  Weather2_Main,  Weather2_InitAll,  Weather2_Finish},
+    {LightRain_InitVars, LightRain_Main, LightRain_InitAll, LightRain_Finish},           // light rain
+    {Snow_InitVars,      Snow_Main,      Snow_InitAll,      Snow_Finish},
+    {MedRain_InitVars,   Rain_Main,      MedRain_InitAll,   Rain_Finish},
+    {Fog1_InitVars,      Fog1_Main,      Fog1_InitAll,      Fog1_Finish},
+    {Ash_InitVars,       Ash_Main,       Ash_InitAll,       Ash_Finish},
+    {Sandstorm_InitVars, Sandstorm_Main, Sandstorm_InitAll, Sandstorm_Finish},
+    {Fog2_InitVars,      Fog2_Main,      Fog2_InitAll,      Fog2_Finish},
+    {Fog1_InitVars,      Fog1_Main,      Fog1_InitAll,      Fog1_Finish},
+    {Weather11_InitVars, Weather11_Main, Weather11_InitAll, Weather11_Finish},
+    {Drought_InitVars,   Drought_Main,   Drought_InitAll,   Drought_Finish},
+    {HeavyRain_InitVars, Rain_Main,      HeavyRain_InitAll, Rain_Finish},
+    {Bubbles_InitVars,   Bubbles_Main,   Bubbles_InitAll,   Bubbles_Finish},
 };
 
 void (*const gUnknown_083970B8[])(void) =
@@ -190,33 +190,33 @@ const u8 gUnknown_083970C8[] =
 
 const u16 gUnknown_083970E8[] = INCBIN_U16("graphics/weather/0.gbapal");
 
-void sub_807C828(void)
+void StartWeather(void)
 {
     u8 index;
-    if (!FuncIsActiveTask(sub_807CA34))
+    if (!FuncIsActiveTask(Task_WeatherMain))
     {
         index = AllocSpritePalette(0x1200);
         CpuCopy32(gUnknown_083970E8, &gPlttBufferUnfaded[0x100 + index * 16], 32);
         sub_807CB10();
         gWeatherPtr->unknown_6D5 = index;
         gWeatherPtr->unknown_6D4 = AllocSpritePalette(0x1201);
-        gWeatherPtr->unknown_6DA = 0;
+        gWeatherPtr->rainSpriteCount = 0;
         gWeatherPtr->unknown_6D8 = 0;
-        gWeatherPtr->unknown_6DE = 0;
-        gWeatherPtr->unknown_6E4 = 0;
-        gWeatherPtr->unknown_700 = 0;
-        gWeatherPtr->unknown_6FB = 0;
-        gWeatherPtr->unknown_724 = 0;
-        gWeatherPtr->unknown_716 = 0;
-        gWeatherPtr->unknown_717 = 0;
+        gWeatherPtr->cloudSpritesCreated = 0;
+        gWeatherPtr->snowflakeSpriteCount = 0;
+        gWeatherPtr->ashSpritesCreated = 0;
+        gWeatherPtr->fog1SpritesCreated = 0;
+        gWeatherPtr->fog2SpritesCreated = 0;
+        gWeatherPtr->sandstormSprites1Created = 0;
+        gWeatherPtr->sandstormSprites2Created = 0;
         gWeatherPtr->unknown_72E = 0;
         gWeatherPtr->unknown_6FA = 0;
-        sub_807DB64(16, 0);
+        Weather_SetBlendCoeffs(16, 0);
         gWeatherPtr->currWeather = 0;
         gWeatherPtr->unknown_6C6 = 3;
         gWeatherPtr->unknown_6C8 = 0;
         gWeatherPtr->unknown_6D3 = 1;
-        gWeatherPtr->unknown_6C9 = CreateTask(sub_807C9E4, 80);
+        gWeatherPtr->unknown_6C9 = CreateTask(Task_WeatherInit, 80);
     }
 }
 
@@ -226,72 +226,70 @@ void DoWeatherEffect(u8 effect)
     {
         PlayRainSoundEffect();
     }
-    if (gWeatherPtr->unknown_6D1 != effect && gWeatherPtr->currWeather == effect)
+    if (gWeatherPtr->nextWeather != effect && gWeatherPtr->currWeather == effect)
     {
-        gUnknown_08396FC8[effect].func0();
+        sWeatherFuncs[effect].initVars();
     }
     gWeatherPtr->unknown_6D3 = 0;
-    gWeatherPtr->unknown_6D1 = effect;
-    gWeatherPtr->unknown_6CE = 0;
+    gWeatherPtr->nextWeather = effect;
+    gWeatherPtr->finishStep = 0;
 }
 
 void sub_807C988(u8 effect)
 {
     PlayRainSoundEffect();
     gWeatherPtr->currWeather = effect;
-    gWeatherPtr->unknown_6D1 = effect;
+    gWeatherPtr->nextWeather = effect;
 }
 
 void sub_807C9B4(u8 effect)
 {
     PlayRainSoundEffect();
     gWeatherPtr->currWeather = effect;
-    gWeatherPtr->unknown_6D1 = effect;
+    gWeatherPtr->nextWeather = effect;
     gWeatherPtr->unknown_6C8 = 1;
 }
 
-void sub_807C9E4(u8 taskId)
+void Task_WeatherInit(u8 taskId)
 {
     if (gWeatherPtr->unknown_6C8)
     {
-        gUnknown_08396FC8[gWeatherPtr->currWeather].func2();
-        gTasks[taskId].func = sub_807CA34;
+        sWeatherFuncs[gWeatherPtr->currWeather].initAll();
+        gTasks[taskId].func = Task_WeatherMain;
     }
 }
 
-void sub_807CA34(u8 task)
+void Task_WeatherMain(u8 taskId)
 {
-    u8 v1;
-    if (gWeatherPtr->currWeather != gWeatherPtr->unknown_6D1)
+    if (gWeatherPtr->currWeather != gWeatherPtr->nextWeather)
     {
-        v1 = gUnknown_08396FC8[gWeatherPtr->currWeather].func3();
-        if (!v1)
+        if (!sWeatherFuncs[gWeatherPtr->currWeather].finish())
         {
-            gUnknown_08396FC8[gWeatherPtr->unknown_6D1].func0();
-            gWeatherPtr->unknown_6C3 = 0; // compiler reuses v1
-            gWeatherPtr->unknown_6C6 = 0; // compiler reuses v1
-            gWeatherPtr->currWeather = gWeatherPtr->unknown_6D1;
+            sWeatherFuncs[gWeatherPtr->nextWeather].initVars();
+            gWeatherPtr->unknown_6C3 = 0;
+            gWeatherPtr->unknown_6C6 = 0;
+            gWeatherPtr->currWeather = gWeatherPtr->nextWeather;
             gWeatherPtr->unknown_6D3 = 1;
         }
     }
     else
     {
-        gUnknown_08396FC8[gWeatherPtr->currWeather].func1();
+        sWeatherFuncs[gWeatherPtr->currWeather].main();
     }
     gUnknown_083970B8[gWeatherPtr->unknown_6C6]();
 }
 
-void sub_807CAE8(void)
+void None_Init(void)
 {
     gWeatherPtr->unknown_6C1 = 0;
     gWeatherPtr->unknown_6C2 = 0;
 }
 
-void nullsub_38(void)
+void None_Main(void)
 {
 }
 
-u8 sub_807CB0C(void)
+u8 None_Finish(void)
 {
     return 0;
 }
@@ -627,14 +625,14 @@ void sub_807D1BC(u8 a1, u8 a2, s8 c, u8 d, u16 e)
     }
 }
 
-void sub_807D304(s8 a, u8 arg2, u16 c)
+void sub_807D304(s8 a, u8 coeff, u16 c)
 {
     struct RGBColor color;
     u8 r_;
     u8 g_;
     u8 b_;
     u16 r4;
-    u16 r5;
+    u16 palOffset;
     u16 r12;
 
     a = -a - 1;
@@ -642,13 +640,13 @@ void sub_807D304(s8 a, u8 arg2, u16 c)
     r_ = color.r;
     g_ = color.g;
     b_ = color.b;
-    r5 = 0;
+    palOffset = 0;
     for (r4 = 0; r4 < 32; r4++)
     {
         if (gUnknown_030006DC[r4] == 0)
         {
-            BlendPalette(r5, 16, arg2, c);
-            r5 += 16;
+            BlendPalette(palOffset, 16, coeff, c);
+            palOffset += 16;
         }
         else
         {
@@ -660,7 +658,7 @@ void sub_807D304(s8 a, u8 arg2, u16 c)
                 u8 r1, g1, b1;
                 u8 r2, g2, b2;
 
-                color1 = *(struct RGBColor *)&gPlttBufferUnfaded[r5];
+                color1 = *(struct RGBColor *)&gPlttBufferUnfaded[palOffset];
                 r1 = color1.r;
                 g1 = color1.g;
                 b1 = color1.b;
@@ -671,11 +669,11 @@ void sub_807D304(s8 a, u8 arg2, u16 c)
                 g2 = color2.g;
                 b2 = color2.b;
 
-                r2 += ((r_ - r2) * arg2) >> 4;
-                g2 += ((g_ - g2) * arg2) >> 4;
-                b2 += ((b_ - b2) * arg2) >> 4;
+                r2 += ((r_ - r2) * coeff) >> 4;
+                g2 += ((g_ - g2) * coeff) >> 4;
+                b2 += ((b_ - b2) * coeff) >> 4;
 
-                gPlttBufferFaded[r5++] = (b2 << 10) | (g2 << 5) | r2;
+                gPlttBufferFaded[palOffset++] = (b2 << 10) | (g2 << 5) | r2;
             }
         }
     }
@@ -775,28 +773,28 @@ void sub_807D5F0(u8 a, u8 b, u8 c)
     }
 }
 
-void fade_screen(u8 a, u8 b)
+void fade_screen(u8 a, u8 delay)
 {
-    u32 r4;
+    u32 fadeColor;
     u32 r1;
     u32 r2;
 
     switch (a)
     {
     case 0:
-        r4 = 0;
+        fadeColor = 0;
         r1 = 0;
         break;
     case 2:
-        r4 = 0xFFFF;
+        fadeColor = 0xFFFF;
         r1 = 0;
         break;
     case 1:
-        r4 = 0;
+        fadeColor = 0;
         r1 = 1;
         break;
     case 3:
-        r4 = 0xFFFF;
+        fadeColor = 0xFFFF;
         r1 = 1;
         break;
     default:
@@ -823,20 +821,20 @@ void fade_screen(u8 a, u8 b)
     {
         if (r2 != 0)
             CpuFastCopy(gPlttBufferFaded, gPlttBufferUnfaded, 0x400);
-        BeginNormalPaletteFade(0xFFFFFFFF, b, 0, 16, r4);
+        BeginNormalPaletteFade(0xFFFFFFFF, delay, 0, 16, fadeColor);
         gWeatherPtr->unknown_6C6 = 2;
     }
     else
     {
-        gWeatherPtr->unknown_6C4 = r4;
+        gWeatherPtr->unknown_6C4 = fadeColor;
         if (r2 != 0)
             gWeatherPtr->unknown_6C7 = 0;
         else
-            BeginNormalPaletteFade(0xFFFFFFFF, b, 16, 0, r4);
+            BeginNormalPaletteFade(0xFFFFFFFF, delay, 16, 0, fadeColor);
         gWeatherPtr->unknown_6C6 = 1;
         gWeatherPtr->unknown_6CA = 1;
         gWeatherPtr->unknown_6CB = 0;
-        sub_807DB64(gWeatherPtr->unknown_730, gWeatherPtr->unknown_732);
+        Weather_SetBlendCoeffs(gWeatherPtr->currBlendEVA, gWeatherPtr->currBlendEVB);
         gWeatherPtr->unknown_6C8 = 1;
     }
 }
@@ -909,7 +907,7 @@ void sub_807D8F0(u8 *a, u8 *b)
     if (r4 < 7)
     {
         r4--;
-        LZ77UnCompWram(gUnknown_08396FA8[r4], eWeatherPaletteData.data[r4]);
+        LZ77UnCompWram(sCompressedDroughtPalettes[r4], eWeatherPaletteData.data[r4]);
         if (r4 == 0)
         {
             eWeatherPaletteData.data[r4][0] = 0x421;
@@ -921,8 +919,7 @@ void sub_807D8F0(u8 *a, u8 *b)
             for (i = 0; i < 0x1000; i++)
                 eWeatherPaletteData.data[r4][i] += eWeatherPaletteData.data[r4 - 1][i];
         }
-        (*a)++;
-        if (*a == 7)
+        if (++(*a) == 7)
         {
             *a = 32;
             *b = 32;
@@ -997,52 +994,58 @@ void sub_807DA4C(void)
     }
 }
 
-void sub_807DB64(u8 a, u8 b)
+void Weather_SetBlendCoeffs(u8 eva, u8 evb)
 {
-    gWeatherPtr->unknown_730 = a;
-    gWeatherPtr->unknown_732 = b;
-    gWeatherPtr->unknown_734 = a;
-    gWeatherPtr->unknown_736 = b;
-    REG_BLDALPHA = (b << 8) | a;
+    gWeatherPtr->currBlendEVA = eva;
+    gWeatherPtr->currBlendEVB = evb;
+    gWeatherPtr->targetBlendEVA = eva;
+    gWeatherPtr->targetBlendEVB = evb;
+    REG_BLDALPHA = BLDALPHA_BLEND(eva, evb);
 }
 
-void sub_807DBA4(u8 a, u8 b, int c)
+void Weather_SetTargetBlendCoeffs(u8 eva, u8 evb, int delay)
 {
-    gWeatherPtr->unknown_734 = a;
-    gWeatherPtr->unknown_736 = b;
-    gWeatherPtr->unknown_73A = c;
+    gWeatherPtr->targetBlendEVA = eva;
+    gWeatherPtr->targetBlendEVB = evb;
+    gWeatherPtr->blendDelay = delay;
     gWeatherPtr->unknown_739 = 0;
     gWeatherPtr->unknown_738 = 0;
 }
 
-bool8 sub_807DBE8(void)
+bool8 Weather_UpdateBlend(void)
 {
-    if (gWeatherPtr->unknown_730 == gWeatherPtr->unknown_734
-     && gWeatherPtr->unknown_732 == gWeatherPtr->unknown_736)
+    if (gWeatherPtr->currBlendEVA == gWeatherPtr->targetBlendEVA
+     && gWeatherPtr->currBlendEVB == gWeatherPtr->targetBlendEVB)
         return TRUE;
-    if (++gWeatherPtr->unknown_739 > gWeatherPtr->unknown_73A)
+
+    if (++gWeatherPtr->unknown_739 > gWeatherPtr->blendDelay)
     {
         gWeatherPtr->unknown_739 = 0;
         gWeatherPtr->unknown_738++;
+
+        // Update currBlendEVA and currBlendEVB on alternate frames
         if (gWeatherPtr->unknown_738 & 1)
         {
-            if (gWeatherPtr->unknown_730 < gWeatherPtr->unknown_734)
-                gWeatherPtr->unknown_730++;
-            else if (gWeatherPtr->unknown_730 > gWeatherPtr->unknown_734)
-                gWeatherPtr->unknown_730--;
+            if (gWeatherPtr->currBlendEVA < gWeatherPtr->targetBlendEVA)
+                gWeatherPtr->currBlendEVA++;
+            else if (gWeatherPtr->currBlendEVA > gWeatherPtr->targetBlendEVA)
+                gWeatherPtr->currBlendEVA--;
         }
         else
         {
-            if (gWeatherPtr->unknown_732 < gWeatherPtr->unknown_736)
-                gWeatherPtr->unknown_732++;
-            else if (gWeatherPtr->unknown_732 > gWeatherPtr->unknown_736)
-                gWeatherPtr->unknown_732--;
+            if (gWeatherPtr->currBlendEVB < gWeatherPtr->targetBlendEVB)
+                gWeatherPtr->currBlendEVB++;
+            else if (gWeatherPtr->currBlendEVB > gWeatherPtr->targetBlendEVB)
+                gWeatherPtr->currBlendEVB--;
         }
     }
-    REG_BLDALPHA = (gWeatherPtr->unknown_732 << 8) | gWeatherPtr->unknown_730;
-    if (gWeatherPtr->unknown_730 == gWeatherPtr->unknown_734
-     && gWeatherPtr->unknown_732 == gWeatherPtr->unknown_736)
+
+    REG_BLDALPHA = BLDALPHA_BLEND(gWeatherPtr->currBlendEVA, gWeatherPtr->currBlendEVB);
+
+    if (gWeatherPtr->currBlendEVA == gWeatherPtr->targetBlendEVA
+     && gWeatherPtr->currBlendEVB == gWeatherPtr->targetBlendEVB)
         return TRUE;
+
     return FALSE;
 }
 
diff --git a/src/field/field_weather_2.c b/src/field/field_weather_2.c
deleted file mode 100644
index 64a5c5dc5..000000000
--- a/src/field/field_weather_2.c
+++ /dev/null
@@ -1,1511 +0,0 @@
-#include "global.h"
-#include "field_map_obj.h"
-#include "field_weather.h"
-#include "random.h"
-#include "script.h"
-#include "songs.h"
-#include "sound.h"
-#include "sprite.h"
-#include "task.h"
-#include "trig.h"
-
-extern struct Weather *const gWeatherPtr;
-
-//extern const s16 gUnknown_0839A9C8[][2];
-extern const struct SpriteSheet gWeatherCloudSpriteSheet;
-extern const struct SpriteTemplate gSpriteTemplate_839A9F0;
-extern const struct SpriteTemplate gSpriteTemplate_839AAA4;
-extern const struct SpriteTemplate gSpriteTemplate_839AB04;
-
-const u16 gUnknown_08397108[] = INCBIN_U16("graphics/weather/1.gbapal");
-const u16 gUnknown_08397128[] = INCBIN_U16("graphics/weather/2.gbapal");
-const u8 WeatherFog0Tiles[] = INCBIN_U8("graphics/weather/fog0.4bpp");
-const u8 gWeatherFog1Tiles[] = INCBIN_U8("graphics/weather/fog1.4bpp");
-const u8 WeatherCloudTiles[] = INCBIN_U8("graphics/weather/cloud.4bpp");
-const u8 gSpriteImage_8398948[] = INCBIN_U8("graphics/weather/snow0.4bpp");
-const u8 gSpriteImage_8398968[] = INCBIN_U8("graphics/weather/snow1.4bpp");
-const u8 WeatherBubbleTiles[] = INCBIN_U8("graphics/weather/bubble.4bpp");
-const u8 WeatherAshTiles[] = INCBIN_U8("graphics/weather/ash.4bpp");
-const u8 WeatherRainTiles[] = INCBIN_U8("graphics/weather/rain.4bpp");
-const u8 WeatherSandstormTiles[] = INCBIN_U8("graphics/weather/sandstorm.4bpp");
-
-const struct Coords16 gUnknown_0839A9C8[] =
-{
-    { 0, 66},
-    { 5, 73},
-    {10, 78},
-};
-
-const struct SpriteSheet gWeatherCloudSpriteSheet = {WeatherCloudTiles, 0x800, 0x1200};
-
-const struct OamData gOamData_839A9DC =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 1,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 0,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 3,
-    .tileNum = 0,
-    .priority = 3,
-    .paletteNum = 0,
-    .affineParam = 0,
-};
-
-const union AnimCmd gSpriteAnim_839A9E4[] =
-{
-    ANIMCMD_FRAME(0, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd *const gSpriteAnimTable_839A9EC[] =
-{
-    gSpriteAnim_839A9E4,
-};
-
-void sub_807E0F4(struct Sprite *);
-const struct SpriteTemplate gSpriteTemplate_839A9F0 =
-{
-    .tileTag = 4608,
-    .paletteTag = 4609,
-    .oam = &gOamData_839A9DC,
-    .anims = gSpriteAnimTable_839A9EC,
-    .images = NULL,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = sub_807E0F4,
-};
-
-extern void sub_807D5BC(s8 a);
-extern void sub_807D8C0(const u16 *palette);
-extern void sub_807D9A8(void);
-extern bool8 sub_807D9C8(void);
-extern void sub_807DA14(void);
-extern void sub_807DA4C(void);
-extern void sub_807DBA4(u8 a, u8 b, int c);
-extern bool8 sub_807DBE8(void);
-extern void SetRainStrengthFromSoundEffect(u16 sndEff);
-extern void sub_807D5F0(u8 a, u8 b, u8 c);
-
-//------------------------------------------------------------------------------
-// Clouds
-//------------------------------------------------------------------------------
-
-void sub_807DE78(void)
-{
-    gWeatherPtr->unknown_6C1 = 0;
-    gWeatherPtr->unknown_6C2 = 20;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6CC = 0;
-    if (gWeatherPtr->unknown_6DE == 0)
-        sub_807DB64(0, 16);
-}
-
-void sub_807DEF4(void);
-
-void sub_807DEC4(void)
-{
-    sub_807DE78();
-    while (gWeatherPtr->unknown_6D2 == 0)
-        sub_807DEF4();
-}
-
-void sub_807DFD4(void);
-
-void sub_807DEF4(void)
-{
-    switch (gWeatherPtr->unknown_6CC)
-    {
-    case 0:
-        sub_807DFD4();
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 1:
-        sub_807DBA4(12, 8, 1);
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 2:
-        if (sub_807DBE8())
-        {
-            gWeatherPtr->unknown_6D2 = 1;
-            gWeatherPtr->unknown_6CC++;
-        }
-        break;
-    }
-}
-
-void sub_807E0A0(void);
-
-bool8 sub_807DF54(void)
-{
-    switch (gWeatherPtr->unknown_6CE)
-    {
-    case 0:
-        sub_807DBA4(0, 16, 1);
-        gWeatherPtr->unknown_6CE++;
-        return TRUE;
-    case 1:
-        if (sub_807DBE8())
-        {
-            sub_807E0A0();
-            gWeatherPtr->unknown_6CE++;
-        }
-        return TRUE;
-    }
-    return FALSE;
-}
-
-void sub_807DF9C(void)
-{
-    gWeatherPtr->unknown_6C1 = 0;
-    gWeatherPtr->unknown_6C2 = 20;
-}
-
-void sub_807DFC0(void)
-{
-    sub_807DF9C();
-}
-
-void nullsub_55(void)
-{
-}
-
-int sub_807DFD0(void)
-{
-    return 0;
-}
-
-void sub_807DFD4(void)
-{
-    u16 i;
-
-    if (gWeatherPtr->unknown_6DE == 1)
-        return;
-    LoadSpriteSheet(&gWeatherCloudSpriteSheet);
-    sub_807D8C0(gUnknown_08397108);
-    for (i = 0; i < 3; i++)
-    {
-        u8 spriteId = CreateSprite(&gSpriteTemplate_839A9F0, 0, 0, 0xFF);
-
-        if (spriteId != 64)
-        {
-            struct Sprite *sprite;
-
-            gWeatherPtr->cloudSprites[i] = &gSprites[spriteId];
-            sprite = gWeatherPtr->cloudSprites[i];
-            sub_80603CC(gUnknown_0839A9C8[i].x + 7, gUnknown_0839A9C8[i].y + 7, &sprite->pos1.x, &sprite->pos1.y);
-            sprite->coordOffsetEnabled = TRUE;
-        }
-        else
-        {
-            gWeatherPtr->cloudSprites[i] = NULL;
-        }
-    }
-    gWeatherPtr->unknown_6DE = 1;
-}
-
-void sub_807E0A0(void)
-{
-    u16 i;
-
-    if (gWeatherPtr->unknown_6DE == 0)
-        return;
-    for (i = 0; i < 3; i++)
-    {
-        if (gWeatherPtr->cloudSprites[i] != NULL)
-            DestroySprite(gWeatherPtr->cloudSprites[i]);
-    }
-    FreeSpriteTilesByTag(0x1200);
-    gWeatherPtr->unknown_6DE = 0;
-}
-
-void sub_807E0F4(struct Sprite *sprite)
-{
-    sprite->data[0] = (sprite->data[0] + 1) & 1;
-    if (sprite->data[0] != 0)
-        sprite->pos1.x--;
-}
-
-void sub_807E110(void)
-{
-    gWeatherPtr->unknown_6CC = 0;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6C1 = 0;
-    gWeatherPtr->unknown_6C2 = 0;
-}
-
-void sub_807E174(void);
-
-void sub_807E144(void)
-{
-    sub_807E110();
-    while (gWeatherPtr->unknown_6D2 == 0)
-        sub_807E174();
-}
-
-void sub_807E174(void)
-{
-    switch (gWeatherPtr->unknown_6CC)
-    {
-    case 0:
-        if (gWeatherPtr->unknown_6C6 != 0)
-            gWeatherPtr->unknown_6CC++;
-        break;
-    case 1:
-        sub_807D9A8();
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 2:
-        if (sub_807D9C8() == FALSE)
-            gWeatherPtr->unknown_6CC++;
-        break;
-    case 3:
-        sub_807DA14();
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 4:
-        sub_807DA4C();
-        if (gWeatherPtr->unknown_73C == 6)
-        {
-            gWeatherPtr->unknown_6D2 = 1;
-            gWeatherPtr->unknown_6CC++;
-        }
-        break;
-    default:
-        sub_807DA4C();
-        break;
-    }
-}
-
-int sub_807E258(void)
-{
-    return 0;
-}
-
-void task50_0807B6D4(u8);
-
-void sub_807E25C(void)
-{
-    CreateTask(task50_0807B6D4, 0x50);
-}
-
-#define tState      data[0]
-#define tBlendY     data[1]
-#define tBlendDelay data[2]
-#define tWinRange   data[3]
-
-void task50_0807B6D4(u8 taskId)
-{
-    struct Task *task = &gTasks[taskId];
-
-    switch (task->tState)
-    {
-    case 0:
-        task->tBlendY = 0;
-        task->tBlendDelay = 0;
-        task->tWinRange = REG_WININ;
-        REG_WININ = WIN_RANGE(63, 63);
-        REG_BLDCNT = 0x9E;
-        REG_BLDY = 0;
-        task->tState++;
-        // fall through
-    case 1:
-        task->tBlendY += 3;
-        if (task->tBlendY > 16)
-            task->tBlendY = 16;
-        REG_BLDY = task->tBlendY;
-        if (task->tBlendY >= 16)
-            task->tState++;
-        break;
-    case 2:
-        task->tBlendDelay++;
-        if (task->tBlendDelay > 9)
-        {
-            task->tBlendDelay = 0;
-            task->tBlendY--;
-            if (task->tBlendY <= 0)
-            {
-                task->tBlendY = 0;
-                task->tState++;
-            }
-            REG_BLDY = task->tBlendY;
-        }
-        break;
-    case 3:
-        REG_BLDCNT = 0;
-        REG_BLDY = 0;
-        REG_WININ = task->tWinRange;
-        task->tState++;
-        break;
-    case 4:
-        EnableBothScriptContexts();
-        DestroyTask(taskId);
-        break;
-    }
-}
-
-#undef tState
-#undef tBlendY
-#undef tBlendDelay
-#undef tWinRange
-
-//------------------------------------------------------------------------------
-// Light Rain
-//------------------------------------------------------------------------------
-
-void LightRain_InitVars(void)
-{
-    gWeatherPtr->unknown_6CC = 0;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6D6 = 0;
-    gWeatherPtr->unknown_6DB = 8;
-    gWeatherPtr->unknown_6DC = 0;
-    gWeatherPtr->unknown_6D9 = 10;
-    gWeatherPtr->unknown_6C1 = 3;
-    gWeatherPtr->unknown_6C2 = 20;
-    SetRainStrengthFromSoundEffect(SE_T_KOAME);
-}
-
-void sub_807E400(void);
-
-void sub_807E3D0(void)
-{
-    LightRain_InitVars();
-    while (gWeatherPtr->unknown_6D2 == 0)
-        sub_807E400();
-}
-
-void sub_807E7A4(void);
-u8 sub_807E7B4(void);
-u8 sub_807E8E8(void);
-
-void sub_807E400(void)
-{
-    switch (gWeatherPtr->unknown_6CC)
-    {
-    case 0:
-        sub_807E7A4();
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 1:
-        if (sub_807E7B4() == 0)
-            gWeatherPtr->unknown_6CC++;
-        break;
-    case 2:
-        if (sub_807E8E8() == FALSE)
-        {
-            gWeatherPtr->unknown_6D2 = 1;
-            gWeatherPtr->unknown_6CC++;
-        }
-        break;
-    }
-}
-
-void sub_807E974(void);
-
-bool8 sub_807E460(void)
-{
-    switch (gWeatherPtr->unknown_6CE)
-    {
-    case 0:
-        if (gWeatherPtr->unknown_6D1 == 3
-         || gWeatherPtr->unknown_6D1 == 5
-         || gWeatherPtr->unknown_6D1 == 13)
-        {
-            gWeatherPtr->unknown_6CE = 0xFF;
-            return FALSE;
-        }
-        else
-        {
-            gWeatherPtr->unknown_6D9 = 0;
-            gWeatherPtr->unknown_6CE++;
-        }
-        // fall through
-    case 1:
-        if (sub_807E8E8() == FALSE)
-        {
-            sub_807E974();
-            gWeatherPtr->unknown_6CE++;
-            return FALSE;
-        }
-        return TRUE;
-    }
-    return FALSE;
-}
-
-// defined below
-extern const s16 gUnknown_0839AABC[][2];
-extern const u16 gUnknown_0839AAC4[][2];
-
-void sub_807E4EC(struct Sprite *sprite)
-{
-    u32 randVal;
-    u16 r6;
-    s32 r4;
-    s32 r0;
-
-    if (sprite->data[1] == 0)
-        sprite->data[1] = 361;
-    randVal = sprite->data[1] * 1103515245 + 12345;
-    sprite->data[1] = ((randVal & 0x7FFF0000) >> 16) % 600;
-
-    r6 = gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][0];
-
-    r4 = sprite->data[1] % 30;
-    sprite->data[2] = r4 * 8;  // useless assignment
-
-    r0 = sprite->data[1] / 30;
-    sprite->data[3] = r0 * 8;  // useless assignment
-
-    sprite->data[2] = r4;
-    sprite->data[2] <<= 7;
-
-    sprite->data[3] = r0;
-    sprite->data[3] <<= 7;
-
-    sprite->data[2] -= gUnknown_0839AABC[gWeatherPtr->unknown_6DC][0] * r6;
-    sprite->data[3] -= gUnknown_0839AABC[gWeatherPtr->unknown_6DC][1] * r6;
-
-    StartSpriteAnim(sprite, 0);
-    sprite->data[4] = 0;
-    sprite->coordOffsetEnabled = FALSE;
-    sprite->data[0] = r6;
-}
-
-void sub_807E5C0(struct Sprite *sprite)
-{
-    if (sprite->data[4] == 0)
-    {
-        sprite->data[2] += gUnknown_0839AABC[gWeatherPtr->unknown_6DC][0];
-        sprite->data[3] += gUnknown_0839AABC[gWeatherPtr->unknown_6DC][1];
-        sprite->pos1.x = sprite->data[2] >> 4;
-        sprite->pos1.y = sprite->data[3] >> 4;
-
-        if (sprite->data[5] != 0
-         && (sprite->pos1.x >= -8 && sprite->pos1.x <= 248)
-         && sprite->pos1.y >= -16 && sprite->pos1.y <= 176)
-            sprite->invisible = FALSE;
-        else
-            sprite->invisible = TRUE;
-
-        sprite->data[0]--;
-        if (sprite->data[0] == 0)
-        {
-            StartSpriteAnim(sprite, gWeatherPtr->unknown_6DC + 1);
-            sprite->data[4] = 1;
-            sprite->pos1.x -= gSpriteCoordOffsetX;
-            sprite->pos1.y -= gSpriteCoordOffsetY;
-            sprite->coordOffsetEnabled = TRUE;
-        }
-    }
-    else if (sprite->animEnded)
-    {
-        sprite->invisible = TRUE;
-        sub_807E4EC(sprite);
-    }
-}
-
-void sub_807E6C4(struct Sprite *sprite)
-{
-    if (sprite->data[0] == 0)
-    {
-        sub_807E4EC(sprite);
-        sprite->callback = sub_807E5C0;
-    }
-    else
-    {
-        sprite->data[0]--;
-    }
-}
-
-void sub_807E6F0(struct Sprite *sprite, u16 b)
-{
-    u16 r8 = gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][0];
-    u16 r6 = b / (gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][1] + r8);
-    u16 r4 = b % (gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][1] + r8);
-
-    while (--r6 != 0xFFFF)
-        sub_807E4EC(sprite);
-    if (r4 < r8)
-    {
-        while (--r4 != 0xFFFF)
-            sub_807E5C0(sprite);
-        sprite->data[6] = 0;
-    }
-    else
-    {
-        sprite->data[0] = r4 - r8;
-        sprite->invisible = TRUE;
-        sprite->data[6] = 1;
-    }
-}
-
-extern const struct SpriteSheet gUnknown_0839AACC;  // defined below
-
-void sub_807E7A4(void)
-{
-    LoadSpriteSheet(&gUnknown_0839AACC);
-}
-
-const struct Coords16 gUnknown_0839AA08[] =
-{
-    {  0,   0},
-    {  0, 160},
-    {  0,  64},
-    {144, 224},
-    {144, 128},
-    { 32,  32},
-    { 32, 192},
-    { 32,  96},
-    { 72, 128},
-    { 72,  32},
-    { 72, 192},
-    {216,  96},
-    {216,   0},
-    {104, 160},
-    {104,  64},
-    {104, 224},
-    {144,   0},
-    {144, 160},
-    {144,  64},
-    { 32, 224},
-    { 32, 128},
-    { 72,  32},
-    { 72, 192},
-    { 48,  96},
-};
-
-const struct OamData gOamData_839AA68 =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 0,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 2,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 2,
-    .tileNum = 0,
-    .priority = 1,
-    .paletteNum = 2,
-    .affineParam = 0,
-};
-
-const union AnimCmd gSpriteAnim_839AA70[] =
-{
-    ANIMCMD_FRAME(0, 16),
-    ANIMCMD_JUMP(0),
-};
-
-const union AnimCmd gSpriteAnim_839AA78[] =
-{
-    ANIMCMD_FRAME(8, 3),
-    ANIMCMD_FRAME(32, 2),
-    ANIMCMD_FRAME(40, 2),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AA88[] =
-{
-    ANIMCMD_FRAME(8, 3),
-    ANIMCMD_FRAME(16, 3),
-    ANIMCMD_FRAME(24, 4),
-    ANIMCMD_END,
-};
-
-const union AnimCmd *const gSpriteAnimTable_839AA98[] =
-{
-    gSpriteAnim_839AA70,
-    gSpriteAnim_839AA78,
-    gSpriteAnim_839AA88,
-};
-
-const struct SpriteTemplate gSpriteTemplate_839AAA4 =
-{
-    .tileTag = 4614,
-    .paletteTag = 4608,
-    .oam = &gOamData_839AA68,
-    .anims = gSpriteAnimTable_839AA98,
-    .images = NULL,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = sub_807E5C0,
-};
-
-
-const s16 gUnknown_0839AABC[][2] =
-{
-	{-104, 208},
-	{-160, 320},
-};
-
-const u16 gUnknown_0839AAC4[][2] =
-{
-    {18, 7},
-    {12, 10},
-};
-
-const struct SpriteSheet gUnknown_0839AACC = {WeatherRainTiles, sizeof(WeatherRainTiles), 0x1206};
-
-const struct OamData gOamData_839AAD4 =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 0,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 0,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 0,
-    .tileNum = 0,
-    .priority = 1,
-    .paletteNum = 0,
-    .affineParam = 0,
-};
-
-const struct SpriteFrameImage gSpriteImageTable_839AADC[] =
-{
-    {gSpriteImage_8398948, sizeof(gSpriteImage_8398948)},
-    {gSpriteImage_8398968, sizeof(gSpriteImage_8398968)},
-};
-
-const union AnimCmd gSpriteAnim_839AAEC[] =
-{
-    ANIMCMD_FRAME(0, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AAF4[] =
-{
-    ANIMCMD_FRAME(1, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd *const gSpriteAnimTable_839AAFC[] =
-{
-    gSpriteAnim_839AAEC,
-    gSpriteAnim_839AAF4,
-};
-
-void sub_807ED48(struct Sprite *);
-const struct SpriteTemplate gSpriteTemplate_839AB04 =
-{
-    .tileTag = 0xFFFF,
-    .paletteTag = 4608,
-    .oam = &gOamData_839AAD4,
-    .anims = gSpriteAnimTable_839AAFC,
-    .images = gSpriteImageTable_839AADC,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = sub_807ED48,
-};
-
-// unused data
-const u16 unusedData_839AB1C[] = {0, 6, 6, 12, 18, 42, 300, 300};
-
-const struct OamData gOamData_839AB2C =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 1,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 0,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 3,
-    .tileNum = 0,
-    .priority = 2,
-    .paletteNum = 0,
-    .affineParam = 0,
-};
-
-const union AnimCmd gSpriteAnim_839AB34[] =
-{
-    ANIMCMD_FRAME(0, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AB3C[] =
-{
-    ANIMCMD_FRAME(32, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AB44[] =
-{
-    ANIMCMD_FRAME(64, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AB4C[] =
-{
-    ANIMCMD_FRAME(96, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AB54[] =
-{
-    ANIMCMD_FRAME(128, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AB5C[] =
-{
-    ANIMCMD_FRAME(160, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd *const gSpriteAnimTable_839AB64[] =
-{
-    gSpriteAnim_839AB34,
-    gSpriteAnim_839AB3C,
-    gSpriteAnim_839AB44,
-    gSpriteAnim_839AB4C,
-    gSpriteAnim_839AB54,
-    gSpriteAnim_839AB5C,
-};
-
-const union AffineAnimCmd gSpriteAffineAnim_839AB7C[] =
-{
-    AFFINEANIMCMD_FRAME(0x200, 0x200, 0, 0),
-    AFFINEANIMCMD_END,
-};
-
-const union AffineAnimCmd *const gSpriteAffineAnimTable_839AB8C[] =
-{
-    gSpriteAffineAnim_839AB7C,
-};
-
-void sub_807F688(struct Sprite *);
-const struct SpriteTemplate gSpriteTemplate_839AB90 =
-{
-    .tileTag = 4609,
-    .paletteTag = 4608,
-    .oam = &gOamData_839AB2C,
-    .anims = gSpriteAnimTable_839AB64,
-    .images = NULL,
-    .affineAnims = gSpriteAffineAnimTable_839AB8C,
-    .callback = sub_807F688,
-};
-
-const struct SpriteSheet gWeatherFog1SpriteSheet = {gWeatherFog1Tiles, sizeof(gWeatherFog1Tiles), 0x1201};
-const struct SpriteSheet gWeatherAshSpriteSheet = {WeatherAshTiles, sizeof(WeatherAshTiles), 0x1202};
-
-const struct OamData gOamData_839ABB8 =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 1,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 0,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 3,
-    .tileNum = 0,
-    .priority = 1,
-    .paletteNum = 15,
-    .affineParam = 0,
-};
-
-const union AnimCmd gSpriteAnim_839ABC0[] =
-{
-    ANIMCMD_FRAME(0, 60),
-    ANIMCMD_FRAME(64, 60),
-    ANIMCMD_JUMP(0),
-};
-
-const union AnimCmd *const gSpriteAnimTable_839ABCC[] =
-{
-    gSpriteAnim_839ABC0,
-};
-
-void sub_807FAA8(struct Sprite *);
-const struct SpriteTemplate gSpriteTemplate_839ABD0 =
-{
-    .tileTag = 4610,
-    .paletteTag = 4608,
-    .oam = &gOamData_839ABB8,
-    .anims = gSpriteAnimTable_839ABCC,
-    .images = NULL,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = sub_807FAA8,
-};
-
-const struct SpriteSheet gWeatherFog0SpriteSheet = {WeatherFog0Tiles, sizeof(WeatherFog0Tiles), 0x1203};
-
-const struct OamData gOamData_839ABF0 =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 1,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 0,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 3,
-    .tileNum = 0,
-    .priority = 2,
-    .paletteNum = 0,
-    .affineParam = 0,
-};
-
-const union AnimCmd gSpriteAnim_839ABF8[] =
-{
-    ANIMCMD_FRAME(0, 16),
-    ANIMCMD_END,
-};
-
-const union AnimCmd *const gSpriteAnimTable_839AC00[] =
-{
-    gSpriteAnim_839ABF8,
-};
-
-void sub_807FE3C(struct Sprite *);
-const struct SpriteTemplate gSpriteTemplate_839AC04 =
-{
-    .tileTag = 4611,
-    .paletteTag = 4608,
-    .oam = &gOamData_839ABF0,
-    .anims = gSpriteAnimTable_839AC00,
-    .images = NULL,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = sub_807FE3C,
-};
-
-const struct OamData gOamData_839AC1C =
-{
-    .y = 0,
-    .affineMode = 0,
-    .objMode = 1,
-    .mosaic = 0,
-    .bpp = 0,
-    .shape = 0,
-    .x = 0,
-    .matrixNum = 0,
-    .size = 3,
-    .tileNum = 0,
-    .priority = 1,
-    .paletteNum = 0,
-    .affineParam = 0,
-};
-
-const union AnimCmd gSpriteAnim_839AC24[] =
-{
-    ANIMCMD_FRAME(0, 3),
-    ANIMCMD_END,
-};
-
-const union AnimCmd gSpriteAnim_839AC2C[] =
-{
-    ANIMCMD_FRAME(64, 3),
-    ANIMCMD_END,
-};
-
-const union AnimCmd *const gSpriteAnimTable_839AC34[] =
-{
-    gSpriteAnim_839AC24,
-    gSpriteAnim_839AC2C,
-};
-
-void sub_8080338(struct Sprite *);
-const struct SpriteTemplate gSpriteTemplate_839AC3C =
-{
-    .tileTag = 4612,
-    .paletteTag = 4609,
-    .oam = &gOamData_839AC1C,
-    .anims = gSpriteAnimTable_839AC34,
-    .images = NULL,
-    .affineAnims = gDummySpriteAffineAnimTable,
-    .callback = sub_8080338,
-};
-
-const struct SpriteSheet gWeatherSandstormSpriteSheet = {WeatherSandstormTiles, sizeof(WeatherSandstormTiles), 0x1204};
-
-bool8 sub_807E7B4(void)
-{
-    u8 r7;
-    u8 spriteId;
-
-    if (gWeatherPtr->unknown_6DA == 24)
-        return FALSE;
-
-    r7 = gWeatherPtr->unknown_6DA;
-    spriteId = CreateSpriteAtEnd(&gSpriteTemplate_839AAA4,
-      gUnknown_0839AA08[r7].x, gUnknown_0839AA08[r7].y, 78);
-    if (spriteId != 64)
-    {
-        gSprites[spriteId].data[5] = 0;
-        gSprites[spriteId].data[1] = r7 * 145;
-        while (gSprites[spriteId].data[1] >= 600)
-            gSprites[spriteId].data[1] -= 600;
-        sub_807E4EC(&gSprites[spriteId]);
-        sub_807E6F0(&gSprites[spriteId], r7 * 9);
-        gSprites[spriteId].invisible = TRUE;
-        gWeatherPtr->unknown_0[r7] = &gSprites[spriteId];
-    }
-    else
-    {
-        gWeatherPtr->unknown_0[r7] = NULL;
-    }
-
-    if (++gWeatherPtr->unknown_6DA == 24)
-    {
-        u16 i;
-
-        for (i = 0; i < 24; i++)
-        {
-            if (gWeatherPtr->unknown_0[i] != NULL)
-            {
-                if (gWeatherPtr->unknown_0[i]->data[6] == 0)
-                    gWeatherPtr->unknown_0[i]->callback = sub_807E5C0;
-                else
-                    gWeatherPtr->unknown_0[i]->callback = sub_807E6C4;
-            }
-        }
-        return FALSE;
-    }
-    return TRUE;
-}
-
-bool8 sub_807E8E8(void)
-{
-    if (gWeatherPtr->unknown_6D8 == gWeatherPtr->unknown_6D9)
-        return FALSE;
-
-    if (++gWeatherPtr->unknown_6D6 > gWeatherPtr->unknown_6DB)
-    {
-        gWeatherPtr->unknown_6D6 = 0;
-        if (gWeatherPtr->unknown_6D8 < gWeatherPtr->unknown_6D9)
-        {
-            gWeatherPtr->unknown_0[gWeatherPtr->unknown_6D8++]->data[5] = 1;
-        }
-        else
-        {
-            gWeatherPtr->unknown_6D8--;
-            gWeatherPtr->unknown_0[gWeatherPtr->unknown_6D8]->data[5] = 0;
-            gWeatherPtr->unknown_0[gWeatherPtr->unknown_6D8]->invisible = TRUE;
-        }
-    }
-    return TRUE;
-}
-
-void sub_807E974(void)
-{
-    u16 i;
-
-    for (i = 0; i < gWeatherPtr->unknown_6DA; i++)
-    {
-        if (gWeatherPtr->unknown_0[i] != NULL)
-            DestroySprite(gWeatherPtr->unknown_0[i]);
-    }
-    gWeatherPtr->unknown_6DA = 0;
-    FreeSpriteTilesByTag(0x1206);
-}
-
-//------------------------------------------------------------------------------
-// Snow
-//------------------------------------------------------------------------------
-
-void Snow_InitVars(void)
-{
-    gWeatherPtr->unknown_6CC = 0;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6C1 = 3;
-    gWeatherPtr->unknown_6C2 = 20;
-    gWeatherPtr->unknown_6E5 = 16;
-    gWeatherPtr->unknown_6E0 = 0;
-}
-
-void snowflakes_progress2(void);
-void sub_807ED48(struct Sprite *);
-
-void sub_807EA18(void)
-{
-    Snow_InitVars();
-    while (gWeatherPtr->unknown_6D2 == 0)
-    {
-        u16 i;
-
-        snowflakes_progress2();
-        for (i = 0; i < gWeatherPtr->unknown_6E4; i++)
-        {
-            sub_807ED48(gWeatherPtr->snowflakeSprites[i]);
-        }
-    }
-}
-
-u8 snowflakes_progress(void);
-
-void snowflakes_progress2(void)
-{
-    if (gWeatherPtr->unknown_6CC == 0 && snowflakes_progress() == FALSE)
-    {
-        gWeatherPtr->unknown_6D2 = 1;
-        gWeatherPtr->unknown_6CC++;
-    }
-}
-
-bool8 sub_807EAC0(void)
-{
-    switch (gWeatherPtr->unknown_6CE)
-    {
-    case 0:
-        gWeatherPtr->unknown_6E5 = 0;
-        gWeatherPtr->unknown_6E0 = 0;
-        gWeatherPtr->unknown_6CE++;
-        // fall through
-    case 1:
-        if (snowflakes_progress() == FALSE)
-        {
-            gWeatherPtr->unknown_6CE++;
-            return FALSE;
-        }
-        return TRUE;
-    }
-    return FALSE;
-}
-
-bool8 snowflake_add(void);
-bool8 snowflake_remove(void);
-
-bool8 snowflakes_progress(void)
-{
-    if (gWeatherPtr->unknown_6E4 == gWeatherPtr->unknown_6E5)
-        return FALSE;
-
-    gWeatherPtr->unknown_6E0++;
-    if (gWeatherPtr->unknown_6E0 > 36)
-    {
-        gWeatherPtr->unknown_6E0 = 0;
-        if (gWeatherPtr->unknown_6E4 < gWeatherPtr->unknown_6E5)
-            snowflake_add();
-        else
-            snowflake_remove();
-    }
-    return (gWeatherPtr->unknown_6E4 != gWeatherPtr->unknown_6E5);
-}
-
-void sub_807EC40(struct Sprite *);
-
-bool8 snowflake_add(void)
-{
-    u8 spriteId = CreateSpriteAtEnd(&gSpriteTemplate_839AB04, 0, 0, 78);
-
-    if (spriteId == 64)
-        return FALSE;
-    gSprites[spriteId].data[4] = gWeatherPtr->unknown_6E4;
-    sub_807EC40(&gSprites[spriteId]);
-    gSprites[spriteId].coordOffsetEnabled = TRUE;
-    gWeatherPtr->snowflakeSprites[gWeatherPtr->unknown_6E4++] = &gSprites[spriteId];
-    return TRUE;
-}
-
-bool8 snowflake_remove(void)
-{
-    if (gWeatherPtr->unknown_6E4 != 0)
-    {
-        DestroySprite(gWeatherPtr->snowflakeSprites[--gWeatherPtr->unknown_6E4]);
-        return TRUE;
-    }
-    return FALSE;
-}
-
-void sub_807EC40(struct Sprite *sprite)
-{
-    u16 r4 = ((sprite->data[4] * 5) & 7) * 30 + (Random() % 30);
-    u16 r6;
-
-    sprite->pos1.y = -3 - (gSpriteCoordOffsetY + sprite->centerToCornerVecY);
-    sprite->pos1.x = r4 - (gSpriteCoordOffsetX + sprite->centerToCornerVecX);
-    sprite->data[0] = sprite->pos1.y * 128;
-    sprite->pos2.x = 0;
-    r6 = Random();
-    sprite->data[1] = (r6 & 3) * 5 + 64;
-    sprite->data[7] = (r6 & 3) * 5 + 64;
-    StartSpriteAnim(sprite, (r6 & 1) ? 0 : 1);
-    sprite->data[3] = 0;
-    sprite->data[2] = ((r6 & 3) == 0) ? 2 : 1;
-    sprite->data[6] = (r6 & 0x1F) + 210;
-    sprite->data[5] = 0;
-}
-
-void sub_807ECEC(struct Sprite *sprite)
-{
-    if (gWeatherPtr->unknown_6E2 > 18)
-    {
-        sprite->invisible = FALSE;
-        sprite->callback = sub_807ED48;
-        sprite->pos1.y = 0xFA - (gSpriteCoordOffsetY + sprite->centerToCornerVecY);
-        sprite->data[0] = sprite->pos1.y * 128;
-        gWeatherPtr->unknown_6E2 = 0;
-    }
-}
-
-void sub_807ED48(struct Sprite *sprite)
-{
-    s16 r3;
-    s16 r2;
-
-    sprite->data[0] += sprite->data[1];
-    sprite->pos1.y = sprite->data[0] >> 7;
-    sprite->data[3] = (sprite->data[3] + sprite->data[2]) & 0xFF;
-    sprite->pos2.x = gSineTable[sprite->data[3]] / 64;
-
-    r3 = (sprite->pos1.x + sprite->centerToCornerVecX + gSpriteCoordOffsetX) & 0x1FF;
-    if (r3 & 0x100)
-        r3 = -0x100 | r3;  // hmm... what is this?
-    if (r3 < -3)
-        sprite->pos1.x = 242 - (gSpriteCoordOffsetX + sprite->centerToCornerVecX);
-    else if (r3 > 242)
-        sprite->pos1.x = -3 - (gSpriteCoordOffsetX + sprite->centerToCornerVecX);
-
-    r2 = (sprite->pos1.y + sprite->centerToCornerVecY + gSpriteCoordOffsetY) & 0xFF;
-    if (r2 > 163 && r2 < 171)
-    {
-        sprite->pos1.y = 250 - (gSpriteCoordOffsetY + sprite->centerToCornerVecY);
-        sprite->data[0] = sprite->pos1.y * 128;
-        sprite->data[5] = 0;
-        sprite->data[6] = 220;
-    }
-    else if (r2 > 242 && r2 < 250)
-    {
-        sprite->pos1.y = 163;
-        sprite->data[0] = sprite->pos1.y * 128;
-        sprite->data[5] = 0;
-        sprite->data[6] = 220;
-        sprite->invisible = TRUE;
-        sprite->callback = sub_807ECEC;
-    }
-
-    sprite->data[5]++;
-    if (sprite->data[5] == sprite->data[6])
-    {
-        sub_807EC40(sprite);
-        sprite->pos1.y = 250;
-        sprite->invisible = TRUE;
-        sprite->callback = sub_807ECEC;
-    }
-}
-
-//------------------------------------------------------------------------------
-// Medium Rain
-//------------------------------------------------------------------------------
-
-void sub_807EE80(void)
-{
-    gWeatherPtr->unknown_6CC = 0;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6D6 = 0;
-    gWeatherPtr->unknown_6DB = 4;
-    gWeatherPtr->unknown_6DC = 0;
-    gWeatherPtr->unknown_6D9 = 16;
-    gWeatherPtr->unknown_6C1 = 3;
-    gWeatherPtr->unknown_6C2 = 20;
-    gWeatherPtr->unknown_6D2 = 0;  // duplicate assignment
-    gWeatherPtr->unknown_6ED = 0;
-    SetRainStrengthFromSoundEffect(SE_T_AME);
-}
-
-void sub_807EFC0(void);
-
-void sub_807EEF4(void)
-{
-    sub_807EE80();
-    while (gWeatherPtr->unknown_6D2 == 0)
-        sub_807EFC0();
-}
-
-//------------------------------------------------------------------------------
-// Heavy Rain
-//------------------------------------------------------------------------------
-
-void sub_807EF24(void)
-{
-    gWeatherPtr->unknown_6CC = 0;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6D6 = 0;
-    gWeatherPtr->unknown_6DB = 4;
-    gWeatherPtr->unknown_6DC = 1;
-    gWeatherPtr->unknown_6D9 = 24;
-    gWeatherPtr->unknown_6C1 = 3;
-    gWeatherPtr->unknown_6C2 = 20;
-    gWeatherPtr->unknown_6D2 = 0;  // duplicate assignment
-    SetRainStrengthFromSoundEffect(SE_T_OOAME);
-}
-
-void sub_807EF90(void)
-{
-    sub_807EF24();
-    while (gWeatherPtr->unknown_6D2 == 0)
-        sub_807EFC0();
-}
-
-void sub_807F434(void);
-void sub_807F3F8(u16);
-
-void sub_807EFC0(void)
-{
-    sub_807F434();
-    switch (gWeatherPtr->unknown_6CC)
-    {
-    case 0:
-        sub_807E7A4();
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 1:
-        if (sub_807E7B4())
-            break;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 2:
-        if (sub_807E8E8())
-            break;
-        gWeatherPtr->unknown_6D2 = 1;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 3:
-        if (gWeatherPtr->unknown_6C6 == 0)
-            break;
-        gWeatherPtr->unknown_6CC = 6;
-        break;
-    case 4:
-        gWeatherPtr->unknown_6EA = 1;
-        gWeatherPtr->unknown_6E6 = (Random() % 360) + 360;
-        gWeatherPtr->unknown_6CC++;
-        // fall through
-    case 5:
-        if (--gWeatherPtr->unknown_6E6 != 0)
-            break;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 6:
-        gWeatherPtr->unknown_6EA = 1;
-        gWeatherPtr->unknown_6EB = Random() % 2;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 7:
-        gWeatherPtr->unknown_6EC = (Random() & 1) + 1;
-        gWeatherPtr->unknown_6CC++;
-        // fall through
-    case 8:
-        sub_807D5BC(19);
-        if (gWeatherPtr->unknown_6EB == 0 && gWeatherPtr->unknown_6EC == 1)
-            sub_807F3F8(20);
-        gWeatherPtr->unknown_6E6 = (Random() % 3) + 6;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 9:
-        if (--gWeatherPtr->unknown_6E6 != 0)
-            break;
-        sub_807D5BC(3);
-        gWeatherPtr->unknown_6EA = 1;
-        if (--gWeatherPtr->unknown_6EC != 0)
-        {
-            gWeatherPtr->unknown_6E6 = (Random() % 16) + 60;
-            gWeatherPtr->unknown_6CC = 10;
-        }
-        else if (gWeatherPtr->unknown_6EB == 0)
-        {
-            gWeatherPtr->unknown_6CC = 4;
-        }
-        else
-        {
-            gWeatherPtr->unknown_6CC = 11;
-        }
-        break;
-    case 10:
-        if (--gWeatherPtr->unknown_6E6 != 0)
-            break;
-        gWeatherPtr->unknown_6CC = 8;
-        break;
-    case 11:
-        gWeatherPtr->unknown_6E6 = (Random() % 16) + 60;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 12:
-        if (--gWeatherPtr->unknown_6E6 != 0)
-            break;
-        sub_807F3F8(100);
-        sub_807D5BC(19);
-        // Why use "% 16" everywhere else and "& 0xF" here. So dumb.
-        gWeatherPtr->unknown_6E6 = (Random() & 0xF) + 30;
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 13:
-        if (--gWeatherPtr->unknown_6E6 != 0)
-            break;
-        sub_807D5F0(19, 3, 5);
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 14:
-        if (gWeatherPtr->unknown_6C6 != 3)
-            break;
-        gWeatherPtr->unknown_6EA = 1;
-        gWeatherPtr->unknown_6CC = 4;
-        break;
-    }
-}
-
-bool8 sub_807F34C(void)
-{
-    switch (gWeatherPtr->unknown_6CE)
-    {
-    case 0:
-        gWeatherPtr->unknown_6EA = 0;
-        gWeatherPtr->unknown_6CE++;
-        // fall through
-    case 1:
-        sub_807EFC0();
-        if (gWeatherPtr->unknown_6EA != 0)
-        {
-            if (gWeatherPtr->unknown_6D1 == 3
-             || gWeatherPtr->unknown_6D1 == 5
-             || gWeatherPtr->unknown_6D1 == 13)
-                return FALSE;
-            gWeatherPtr->unknown_6D9 = 0;
-            gWeatherPtr->unknown_6CE++;
-        }
-        break;
-    case 2:
-        if (sub_807E8E8())
-            break;
-        sub_807E974();
-        gWeatherPtr->unknown_6ED = 0;
-        gWeatherPtr->unknown_6CE++;
-        return FALSE;
-    default:
-        return FALSE;
-    }
-    return TRUE;
-}
-
-void sub_807F3F8(u16 a)
-{
-    if (gWeatherPtr->unknown_6ED == 0)
-    {
-        gWeatherPtr->unknown_6E8 = Random() % a;
-        gWeatherPtr->unknown_6ED = 1;
-    }
-}
-
-void sub_807F434(void)
-{
-    if (gWeatherPtr->unknown_6ED == 1)
-    {
-        if (gWeatherPtr->unknown_6E8 == 0)
-        {
-            if (IsSEPlaying())
-                return;
-            if (Random() & 1)
-                PlaySE(SE_T_KAMI);
-            else
-                PlaySE(SE_T_KAMI2);
-            gWeatherPtr->unknown_6ED = 0;
-        }
-        else
-        {
-            gWeatherPtr->unknown_6E8--;
-        }
-    }
-}
-
-void sub_807F49C(void)
-{
-    gWeatherPtr->unknown_6CC = 0;
-    gWeatherPtr->unknown_6D2 = 0;
-    gWeatherPtr->unknown_6C1 = 0;
-    gWeatherPtr->unknown_6C2 = 20;
-    if (gWeatherPtr->unknown_6FB == 0)
-    {
-        gWeatherPtr->unknown_6F0 = 0;
-        gWeatherPtr->unknown_6F2 = 0;
-        gWeatherPtr->unknown_6EE = 0;
-        sub_807DB64(0, 16);
-    }
-}
-
-void sub_807F52C(void);
-
-void sub_807F4FC(void)
-{
-    sub_807F49C();
-    while (gWeatherPtr->unknown_6D2 == 0)
-        sub_807F52C();
-}
-
-void sub_807F6E8(void);
-
-void sub_807F52C(void)
-{
-    gWeatherPtr->unknown_6EE = (gSpriteCoordOffsetX - gWeatherPtr->unknown_6F2) & 0xFF;
-    if (++gWeatherPtr->unknown_6F0 > 3)
-    {
-        gWeatherPtr->unknown_6F0 = 0;
-        gWeatherPtr->unknown_6F2++;
-    }
-    switch (gWeatherPtr->unknown_6CC)
-    {
-    case 0:
-        sub_807F6E8();
-        if (gWeatherPtr->currWeather == 6)
-            sub_807DBA4(12, 8, 3);
-        else
-            sub_807DBA4(4, 16, 0);
-        gWeatherPtr->unknown_6CC++;
-        break;
-    case 1:
-        if (sub_807DBE8())
-        {
-            gWeatherPtr->unknown_6D2 = 1;
-            gWeatherPtr->unknown_6CC++;
-        }
-        break;
-    }
-}
-
-void sub_807F7A4(void);
-
-bool8 sub_807F5EC(void)
-{
-    gWeatherPtr->unknown_6EE = (gSpriteCoordOffsetX - gWeatherPtr->unknown_6F2) & 0xFF;
-    if (++gWeatherPtr->unknown_6F0 > 3)
-    {
-        gWeatherPtr->unknown_6F0 = 0;
-        gWeatherPtr->unknown_6F2++;
-    }
-    switch (gWeatherPtr->unknown_6CE)
-    {
-    case 0:
-        sub_807DBA4(0, 16, 3);
-        gWeatherPtr->unknown_6CE++;
-        break;
-    case 1:
-        if (!sub_807DBE8())
-            break;
-        gWeatherPtr->unknown_6CE++;
-        break;
-    case 2:
-        sub_807F7A4();
-        gWeatherPtr->unknown_6CE++;
-        break;
-    default:
-        return FALSE;
-    }
-    return TRUE;
-}
-
-void sub_807F688(struct Sprite *sprite)
-{
-    sprite->pos2.y = (u8)gSpriteCoordOffsetY;
-    sprite->pos1.x = gWeatherPtr->unknown_6EE + 32 + sprite->data[0] * 64;
-    if (sprite->pos1.x > 0x10F)
-    {
-        sprite->pos1.x = 480 + gWeatherPtr->unknown_6EE - (4 - sprite->data[0]) * 64;
-        sprite->pos1.x &= 0x1FF;
-    }
-}
diff --git a/src/field/field_weather_effects.c b/src/field/field_weather_effects.c
new file mode 100644
index 000000000..b1dca6396
--- /dev/null
+++ b/src/field/field_weather_effects.c
@@ -0,0 +1,2383 @@
+#include "global.h"
+#include "field_map_obj.h"
+#include "field_weather.h"
+#include "overworld.h"
+#include "random.h"
+#include "script.h"
+#include "songs.h"
+#include "sound.h"
+#include "sprite.h"
+#include "task.h"
+#include "trig.h"
+
+extern struct Weather *const gWeatherPtr;
+
+const u16 gUnknown_08397108[] = INCBIN_U16("graphics/weather/1.gbapal");
+const u16 gUnknown_08397128[] = INCBIN_U16("graphics/weather/2.gbapal");
+const u8 gWeatherFog2Tiles[] = INCBIN_U8("graphics/weather/fog2.4bpp");
+const u8 gWeatherFog1Tiles[] = INCBIN_U8("graphics/weather/fog1.4bpp");
+const u8 gWeatherCloudTiles[] = INCBIN_U8("graphics/weather/cloud.4bpp");
+const u8 gWeatherSnow1Tiles[] = INCBIN_U8("graphics/weather/snow0.4bpp");
+const u8 gWeatherSnow2Tiles[] = INCBIN_U8("graphics/weather/snow1.4bpp");
+const u8 gWeatherBubbleTiles[] = INCBIN_U8("graphics/weather/bubble.4bpp");
+const u8 gWeatherAshTiles[] = INCBIN_U8("graphics/weather/ash.4bpp");
+const u8 gWeatherRainTiles[] = INCBIN_U8("graphics/weather/rain.4bpp");
+const u8 gWeatherSandstormTiles[] = INCBIN_U8("graphics/weather/sandstorm.4bpp");
+
+static const struct Coords16 gUnknown_0839A9C8[] =
+{
+    { 0, 66},
+    { 5, 73},
+    {10, 78},
+};
+
+static const struct SpriteSheet sCloudSpriteSheet = {gWeatherCloudTiles, sizeof(gWeatherCloudTiles), 0x1200};
+
+static const struct OamData gOamData_839A9DC =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 1,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 3,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const union AnimCmd gSpriteAnim_839A9E4[] =
+{
+    ANIMCMD_FRAME(0, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const gSpriteAnimTable_839A9EC[] =
+{
+    gSpriteAnim_839A9E4,
+};
+
+void sub_807E0F4(struct Sprite *);
+static const struct SpriteTemplate sCloudSpriteTemplate =
+{
+    .tileTag = 4608,
+    .paletteTag = 4609,
+    .oam = &gOamData_839A9DC,
+    .anims = gSpriteAnimTable_839A9EC,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = sub_807E0F4,
+};
+
+extern void sub_807D5BC(s8 a);
+extern void sub_807D8C0(const u16 *palette);
+extern void sub_807D9A8(void);
+extern bool8 sub_807D9C8(void);
+extern void sub_807DA14(void);
+extern void sub_807DA4C(void);
+extern void Weather_SetTargetBlendCoeffs(u8 a, u8 b, int c);
+extern bool8 Weather_UpdateBlend(void);
+extern void SetRainStrengthFromSoundEffect(u16 sndEff);
+extern void sub_807D5F0(u8 a, u8 b, u8 c);
+
+//------------------------------------------------------------------------------
+// Clouds
+//------------------------------------------------------------------------------
+
+void Clouds_InitVars(void)
+{
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 20;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->initStep = 0;
+    if (gWeatherPtr->cloudSpritesCreated == FALSE)
+        Weather_SetBlendCoeffs(0, 16);
+}
+
+void Clouds_Main(void);
+
+void Clouds_InitAll(void)
+{
+    Clouds_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Clouds_Main();
+}
+
+void CreateCloudSprites(void);
+
+void Clouds_Main(void)
+{
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        CreateCloudSprites();
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        Weather_SetTargetBlendCoeffs(12, 8, 1);
+        gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (Weather_UpdateBlend())
+        {
+            gWeatherPtr->weatherGfxLoaded = TRUE;
+            gWeatherPtr->initStep++;
+        }
+        break;
+    }
+}
+
+void sub_807E0A0(void);
+
+bool8 Clouds_Finish(void)
+{
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        Weather_SetTargetBlendCoeffs(0, 16, 1);
+        gWeatherPtr->finishStep++;
+        return TRUE;
+    case 1:
+        if (Weather_UpdateBlend())
+        {
+            sub_807E0A0();
+            gWeatherPtr->finishStep++;
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+//------------------------------------------------------------------------------
+// Weather 2
+//------------------------------------------------------------------------------
+
+void Weather2_InitVars(void)
+{
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 20;
+}
+
+void Weather2_InitAll(void)
+{
+    Weather2_InitVars();
+}
+
+void Weather2_Main(void)
+{
+}
+
+int Weather2_Finish(void)
+{
+    return 0;
+}
+
+void CreateCloudSprites(void)
+{
+    u16 i;
+
+    if (gWeatherPtr->cloudSpritesCreated == TRUE)
+        return;
+    LoadSpriteSheet(&sCloudSpriteSheet);
+    sub_807D8C0(gUnknown_08397108);
+    for (i = 0; i < 3; i++)
+    {
+        u8 spriteId = CreateSprite(&sCloudSpriteTemplate, 0, 0, 0xFF);
+
+        if (spriteId != 64)
+        {
+            struct Sprite *sprite;
+
+            gWeatherPtr->sprites.s1.cloudSprites[i] = &gSprites[spriteId];
+            sprite = gWeatherPtr->sprites.s1.cloudSprites[i];
+            sub_80603CC(gUnknown_0839A9C8[i].x + 7, gUnknown_0839A9C8[i].y + 7, &sprite->pos1.x, &sprite->pos1.y);
+            sprite->coordOffsetEnabled = TRUE;
+        }
+        else
+        {
+            gWeatherPtr->sprites.s1.cloudSprites[i] = NULL;
+        }
+    }
+    gWeatherPtr->cloudSpritesCreated = TRUE;
+}
+
+void sub_807E0A0(void)
+{
+    u16 i;
+
+    if (gWeatherPtr->cloudSpritesCreated == FALSE)
+        return;
+    for (i = 0; i < 3; i++)
+    {
+        if (gWeatherPtr->sprites.s1.cloudSprites[i] != NULL)
+            DestroySprite(gWeatherPtr->sprites.s1.cloudSprites[i]);
+    }
+    FreeSpriteTilesByTag(0x1200);
+    gWeatherPtr->cloudSpritesCreated = FALSE;
+}
+
+void sub_807E0F4(struct Sprite *sprite)
+{
+    sprite->data[0] = (sprite->data[0] + 1) & 1;
+    if (sprite->data[0] != 0)
+        sprite->pos1.x--;
+}
+
+//------------------------------------------------------------------------------
+// Drought
+//------------------------------------------------------------------------------
+
+void Drought_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 0;
+}
+
+void Drought_Main(void);
+
+void Drought_InitAll(void)
+{
+    Drought_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Drought_Main();
+}
+
+void Drought_Main(void)
+{
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        if (gWeatherPtr->unknown_6C6 != 0)
+            gWeatherPtr->initStep++;
+        break;
+    case 1:
+        sub_807D9A8();
+        gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (sub_807D9C8() == FALSE)
+            gWeatherPtr->initStep++;
+        break;
+    case 3:
+        sub_807DA14();
+        gWeatherPtr->initStep++;
+        break;
+    case 4:
+        sub_807DA4C();
+        if (gWeatherPtr->unknown_73C == 6)
+        {
+            gWeatherPtr->weatherGfxLoaded = TRUE;
+            gWeatherPtr->initStep++;
+        }
+        break;
+    default:
+        sub_807DA4C();
+        break;
+    }
+}
+
+int Drought_Finish(void)
+{
+    return 0;
+}
+
+void task50_0807B6D4(u8);
+
+void sub_807E25C(void)
+{
+    CreateTask(task50_0807B6D4, 0x50);
+}
+
+#define tState      data[0]
+#define tBlendY     data[1]
+#define tBlendDelay data[2]
+#define tWinRange   data[3]
+
+void task50_0807B6D4(u8 taskId)
+{
+    struct Task *task = &gTasks[taskId];
+
+    switch (task->tState)
+    {
+    case 0:
+        task->tBlendY = 0;
+        task->tBlendDelay = 0;
+        task->tWinRange = REG_WININ;
+        REG_WININ = WIN_RANGE(63, 63);
+        REG_BLDCNT = BLDCNT_TGT1_BG1 | BLDCNT_TGT1_BG2 | BLDCNT_TGT1_BG3 | BLDCNT_TGT1_OBJ
+                   | BLDCNT_EFFECT_LIGHTEN;
+        REG_BLDY = 0;
+        task->tState++;
+        // fall through
+    case 1:
+        task->tBlendY += 3;
+        if (task->tBlendY > 16)
+            task->tBlendY = 16;
+        REG_BLDY = task->tBlendY;
+        if (task->tBlendY >= 16)
+            task->tState++;
+        break;
+    case 2:
+        task->tBlendDelay++;
+        if (task->tBlendDelay > 9)
+        {
+            task->tBlendDelay = 0;
+            task->tBlendY--;
+            if (task->tBlendY <= 0)
+            {
+                task->tBlendY = 0;
+                task->tState++;
+            }
+            REG_BLDY = task->tBlendY;
+        }
+        break;
+    case 3:
+        REG_BLDCNT = 0;
+        REG_BLDY = 0;
+        REG_WININ = task->tWinRange;
+        task->tState++;
+        break;
+    case 4:
+        EnableBothScriptContexts();
+        DestroyTask(taskId);
+        break;
+    }
+}
+
+#undef tState
+#undef tBlendY
+#undef tBlendDelay
+#undef tWinRange
+
+//------------------------------------------------------------------------------
+// Light Rain
+//------------------------------------------------------------------------------
+
+void LightRain_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6D6 = 0;
+    gWeatherPtr->unknown_6DB = 8;
+    gWeatherPtr->unknown_6DC = 0;
+    gWeatherPtr->unknown_6D9 = 10;
+    gWeatherPtr->unknown_6C1 = 3;
+    gWeatherPtr->unknown_6C2 = 20;
+    SetRainStrengthFromSoundEffect(SE_T_KOAME);
+}
+
+void LightRain_Main(void);
+
+void LightRain_InitAll(void)
+{
+    LightRain_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        LightRain_Main();
+}
+
+void LoadRainSpriteSheet(void);
+u8 CreateRainSprite(void);
+u8 sub_807E8E8(void);
+
+void LightRain_Main(void)
+{
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        LoadRainSpriteSheet();
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        if (CreateRainSprite() == 0)
+            gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (sub_807E8E8() == FALSE)
+        {
+            gWeatherPtr->weatherGfxLoaded = TRUE;
+            gWeatherPtr->initStep++;
+        }
+        break;
+    }
+}
+
+void DestroyRainSprites(void);
+
+bool8 LightRain_Finish(void)
+{
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        if (gWeatherPtr->nextWeather == WEATHER_RAIN_LIGHT
+         || gWeatherPtr->nextWeather == WEATHER_RAIN_MED
+         || gWeatherPtr->nextWeather == WEATHER_RAIN_HEAVY)
+        {
+            gWeatherPtr->finishStep = 0xFF;
+            return FALSE;
+        }
+        else
+        {
+            gWeatherPtr->unknown_6D9 = 0;
+            gWeatherPtr->finishStep++;
+        }
+        // fall through
+    case 1:
+        if (sub_807E8E8() == FALSE)
+        {
+            DestroyRainSprites();
+            gWeatherPtr->finishStep++;
+            return FALSE;
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+// defined below
+extern const s16 gUnknown_0839AABC[][2];
+extern const u16 gUnknown_0839AAC4[][2];
+
+void sub_807E4EC(struct Sprite *sprite)
+{
+    u32 randVal;
+    u16 r6;
+    s32 r4;
+    s32 r0;
+
+    if (sprite->data[1] == 0)
+        sprite->data[1] = 361;
+    randVal = sprite->data[1] * 1103515245 + 12345;
+    sprite->data[1] = ((randVal & 0x7FFF0000) >> 16) % 600;
+
+    r6 = gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][0];
+
+    r4 = sprite->data[1] % 30;
+    sprite->data[2] = r4 * 8;  // useless assignment
+
+    r0 = sprite->data[1] / 30;
+    sprite->data[3] = r0 * 8;  // useless assignment
+
+    sprite->data[2] = r4;
+    sprite->data[2] <<= 7;
+
+    sprite->data[3] = r0;
+    sprite->data[3] <<= 7;
+
+    sprite->data[2] -= gUnknown_0839AABC[gWeatherPtr->unknown_6DC][0] * r6;
+    sprite->data[3] -= gUnknown_0839AABC[gWeatherPtr->unknown_6DC][1] * r6;
+
+    StartSpriteAnim(sprite, 0);
+    sprite->data[4] = 0;
+    sprite->coordOffsetEnabled = FALSE;
+    sprite->data[0] = r6;
+}
+
+void sub_807E5C0(struct Sprite *sprite)
+{
+    if (sprite->data[4] == 0)
+    {
+        sprite->data[2] += gUnknown_0839AABC[gWeatherPtr->unknown_6DC][0];
+        sprite->data[3] += gUnknown_0839AABC[gWeatherPtr->unknown_6DC][1];
+        sprite->pos1.x = sprite->data[2] >> 4;
+        sprite->pos1.y = sprite->data[3] >> 4;
+
+        if (sprite->data[5] != 0
+         && (sprite->pos1.x >= -8 && sprite->pos1.x <= 248)
+         && sprite->pos1.y >= -16 && sprite->pos1.y <= 176)
+            sprite->invisible = FALSE;
+        else
+            sprite->invisible = TRUE;
+
+        sprite->data[0]--;
+        if (sprite->data[0] == 0)
+        {
+            StartSpriteAnim(sprite, gWeatherPtr->unknown_6DC + 1);
+            sprite->data[4] = 1;
+            sprite->pos1.x -= gSpriteCoordOffsetX;
+            sprite->pos1.y -= gSpriteCoordOffsetY;
+            sprite->coordOffsetEnabled = TRUE;
+        }
+    }
+    else if (sprite->animEnded)
+    {
+        sprite->invisible = TRUE;
+        sub_807E4EC(sprite);
+    }
+}
+
+void sub_807E6C4(struct Sprite *sprite)
+{
+    if (sprite->data[0] == 0)
+    {
+        sub_807E4EC(sprite);
+        sprite->callback = sub_807E5C0;
+    }
+    else
+    {
+        sprite->data[0]--;
+    }
+}
+
+void sub_807E6F0(struct Sprite *sprite, u16 b)
+{
+    u16 r8 = gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][0];
+    u16 r6 = b / (gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][1] + r8);
+    u16 r4 = b % (gUnknown_0839AAC4[gWeatherPtr->unknown_6DC][1] + r8);
+
+    while (--r6 != 0xFFFF)
+        sub_807E4EC(sprite);
+    if (r4 < r8)
+    {
+        while (--r4 != 0xFFFF)
+            sub_807E5C0(sprite);
+        sprite->data[6] = 0;
+    }
+    else
+    {
+        sprite->data[0] = r4 - r8;
+        sprite->invisible = TRUE;
+        sprite->data[6] = 1;
+    }
+}
+
+extern const struct SpriteSheet sRainSpriteSheet;  // defined below
+
+void LoadRainSpriteSheet(void)
+{
+    LoadSpriteSheet(&sRainSpriteSheet);
+}
+
+static const struct Coords16 sRainSpriteCoords[] =
+{
+    {  0,   0},
+    {  0, 160},
+    {  0,  64},
+    {144, 224},
+    {144, 128},
+    { 32,  32},
+    { 32, 192},
+    { 32,  96},
+    { 72, 128},
+    { 72,  32},
+    { 72, 192},
+    {216,  96},
+    {216,   0},
+    {104, 160},
+    {104,  64},
+    {104, 224},
+    {144,   0},
+    {144, 160},
+    {144,  64},
+    { 32, 224},
+    { 32, 128},
+    { 72,  32},
+    { 72, 192},
+    { 48,  96},
+};
+
+static const struct OamData gOamData_839AA68 =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 2,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 2,
+    .tileNum = 0,
+    .priority = 1,
+    .paletteNum = 2,
+    .affineParam = 0,
+};
+
+static const union AnimCmd gSpriteAnim_839AA70[] =
+{
+    ANIMCMD_FRAME(0, 16),
+    ANIMCMD_JUMP(0),
+};
+
+static const union AnimCmd gSpriteAnim_839AA78[] =
+{
+    ANIMCMD_FRAME(8, 3),
+    ANIMCMD_FRAME(32, 2),
+    ANIMCMD_FRAME(40, 2),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AA88[] =
+{
+    ANIMCMD_FRAME(8, 3),
+    ANIMCMD_FRAME(16, 3),
+    ANIMCMD_FRAME(24, 4),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const gSpriteAnimTable_839AA98[] =
+{
+    gSpriteAnim_839AA70,
+    gSpriteAnim_839AA78,
+    gSpriteAnim_839AA88,
+};
+
+static const struct SpriteTemplate sRainSpriteTemplate =
+{
+    .tileTag = 4614,
+    .paletteTag = 4608,
+    .oam = &gOamData_839AA68,
+    .anims = gSpriteAnimTable_839AA98,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = sub_807E5C0,
+};
+
+
+const s16 gUnknown_0839AABC[][2] =
+{
+	{-104, 208},
+	{-160, 320},
+};
+
+const u16 gUnknown_0839AAC4[][2] =
+{
+    {18, 7},
+    {12, 10},
+};
+
+static const struct SpriteSheet sRainSpriteSheet = {gWeatherRainTiles, sizeof(gWeatherRainTiles), 0x1206};
+
+static const struct OamData gOamData_839AAD4 =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 0,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 0,
+    .tileNum = 0,
+    .priority = 1,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const struct SpriteFrameImage gSpriteImageTable_839AADC[] =
+{
+    {gWeatherSnow1Tiles, sizeof(gWeatherSnow1Tiles)},
+    {gWeatherSnow2Tiles, sizeof(gWeatherSnow2Tiles)},
+};
+
+static const union AnimCmd gSpriteAnim_839AAEC[] =
+{
+    ANIMCMD_FRAME(0, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AAF4[] =
+{
+    ANIMCMD_FRAME(1, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const gSpriteAnimTable_839AAFC[] =
+{
+    gSpriteAnim_839AAEC,
+    gSpriteAnim_839AAF4,
+};
+
+void sub_807ED48(struct Sprite *);
+static const struct SpriteTemplate sSnowflakeSpriteTemplate =
+{
+    .tileTag = 0xFFFF,
+    .paletteTag = 4608,
+    .oam = &gOamData_839AAD4,
+    .anims = gSpriteAnimTable_839AAFC,
+    .images = gSpriteImageTable_839AADC,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = sub_807ED48,
+};
+
+// unused data
+static const u16 unusedData_839AB1C[] = {0, 6, 6, 12, 18, 42, 300, 300};
+
+static const struct OamData gOamData_839AB2C =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 1,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 2,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+static const union AnimCmd gSpriteAnim_839AB34[] =
+{
+    ANIMCMD_FRAME(0, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AB3C[] =
+{
+    ANIMCMD_FRAME(32, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AB44[] =
+{
+    ANIMCMD_FRAME(64, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AB4C[] =
+{
+    ANIMCMD_FRAME(96, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AB54[] =
+{
+    ANIMCMD_FRAME(128, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd gSpriteAnim_839AB5C[] =
+{
+    ANIMCMD_FRAME(160, 16),
+    ANIMCMD_END,
+};
+
+static const union AnimCmd *const gSpriteAnimTable_839AB64[] =
+{
+    gSpriteAnim_839AB34,
+    gSpriteAnim_839AB3C,
+    gSpriteAnim_839AB44,
+    gSpriteAnim_839AB4C,
+    gSpriteAnim_839AB54,
+    gSpriteAnim_839AB5C,
+};
+
+static const union AffineAnimCmd gSpriteAffineAnim_839AB7C[] =
+{
+    AFFINEANIMCMD_FRAME(0x200, 0x200, 0, 0),
+    AFFINEANIMCMD_END,
+};
+
+static const union AffineAnimCmd *const gSpriteAffineAnimTable_839AB8C[] =
+{
+    gSpriteAffineAnim_839AB7C,
+};
+
+static void Fog1SpriteCallback(struct Sprite *);
+static const struct SpriteTemplate sFog1SpriteTemplate =
+{
+    .tileTag = 4609,
+    .paletteTag = 4608,
+    .oam = &gOamData_839AB2C,
+    .anims = gSpriteAnimTable_839AB64,
+    .images = NULL,
+    .affineAnims = gSpriteAffineAnimTable_839AB8C,
+    .callback = Fog1SpriteCallback,
+};
+
+bool8 CreateRainSprite(void)
+{
+    u8 spriteNum;
+    u8 spriteId;
+
+    if (gWeatherPtr->rainSpriteCount == 24)
+        return FALSE;
+
+    spriteNum = gWeatherPtr->rainSpriteCount;
+    spriteId = CreateSpriteAtEnd(&sRainSpriteTemplate,
+      sRainSpriteCoords[spriteNum].x, sRainSpriteCoords[spriteNum].y, 78);
+    if (spriteId != 64)
+    {
+        gSprites[spriteId].data[5] = 0;
+        gSprites[spriteId].data[1] = spriteNum * 145;
+        while (gSprites[spriteId].data[1] >= 600)
+            gSprites[spriteId].data[1] -= 600;
+        sub_807E4EC(&gSprites[spriteId]);
+        sub_807E6F0(&gSprites[spriteId], spriteNum * 9);
+        gSprites[spriteId].invisible = TRUE;
+        gWeatherPtr->sprites.s1.rainSprites[spriteNum] = &gSprites[spriteId];
+    }
+    else
+    {
+        gWeatherPtr->sprites.s1.rainSprites[spriteNum] = NULL;
+    }
+
+    if (++gWeatherPtr->rainSpriteCount == 24)
+    {
+        u16 i;
+
+        for (i = 0; i < 24; i++)
+        {
+            if (gWeatherPtr->sprites.s1.rainSprites[i] != NULL)
+            {
+                if (gWeatherPtr->sprites.s1.rainSprites[i]->data[6] == 0)
+                    gWeatherPtr->sprites.s1.rainSprites[i]->callback = sub_807E5C0;
+                else
+                    gWeatherPtr->sprites.s1.rainSprites[i]->callback = sub_807E6C4;
+            }
+        }
+        return FALSE;
+    }
+    return TRUE;
+}
+
+bool8 sub_807E8E8(void)
+{
+    if (gWeatherPtr->unknown_6D8 == gWeatherPtr->unknown_6D9)
+        return FALSE;
+
+    if (++gWeatherPtr->unknown_6D6 > gWeatherPtr->unknown_6DB)
+    {
+        gWeatherPtr->unknown_6D6 = 0;
+        if (gWeatherPtr->unknown_6D8 < gWeatherPtr->unknown_6D9)
+        {
+            gWeatherPtr->sprites.s1.rainSprites[gWeatherPtr->unknown_6D8++]->data[5] = 1;
+        }
+        else
+        {
+            gWeatherPtr->unknown_6D8--;
+            gWeatherPtr->sprites.s1.rainSprites[gWeatherPtr->unknown_6D8]->data[5] = 0;
+            gWeatherPtr->sprites.s1.rainSprites[gWeatherPtr->unknown_6D8]->invisible = TRUE;
+        }
+    }
+    return TRUE;
+}
+
+void DestroyRainSprites(void)
+{
+    u16 i;
+
+    for (i = 0; i < gWeatherPtr->rainSpriteCount; i++)
+    {
+        if (gWeatherPtr->sprites.s1.rainSprites[i] != NULL)
+            DestroySprite(gWeatherPtr->sprites.s1.rainSprites[i]);
+    }
+    gWeatherPtr->rainSpriteCount = 0;
+    FreeSpriteTilesByTag(0x1206);
+}
+
+//------------------------------------------------------------------------------
+// Snow
+//------------------------------------------------------------------------------
+
+void Snow_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6C1 = 3;
+    gWeatherPtr->unknown_6C2 = 20;
+    gWeatherPtr->unknown_6E5 = 16;
+    gWeatherPtr->unknown_6E0 = 0;
+}
+
+void Snow_Main(void);
+void sub_807ED48(struct Sprite *);
+
+void Snow_InitAll(void)
+{
+    Snow_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+    {
+        u16 i;
+
+        Snow_Main();
+        for (i = 0; i < gWeatherPtr->snowflakeSpriteCount; i++)
+        {
+            sub_807ED48(gWeatherPtr->sprites.s1.snowflakeSprites[i]);
+        }
+    }
+}
+
+u8 snowflakes_progress(void);
+
+void Snow_Main(void)
+{
+    if (gWeatherPtr->initStep == 0 && snowflakes_progress() == FALSE)
+    {
+        gWeatherPtr->weatherGfxLoaded = TRUE;
+        gWeatherPtr->initStep++;
+    }
+}
+
+bool8 Snow_Finish(void)
+{
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        gWeatherPtr->unknown_6E5 = 0;
+        gWeatherPtr->unknown_6E0 = 0;
+        gWeatherPtr->finishStep++;
+        // fall through
+    case 1:
+        if (snowflakes_progress() == FALSE)
+        {
+            gWeatherPtr->finishStep++;
+            return FALSE;
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
+bool8 CreateSnowflakeSprite(void);
+bool8 RemoveSnowflakeSprite(void);
+
+bool8 snowflakes_progress(void)
+{
+    if (gWeatherPtr->snowflakeSpriteCount == gWeatherPtr->unknown_6E5)
+        return FALSE;
+
+    gWeatherPtr->unknown_6E0++;
+    if (gWeatherPtr->unknown_6E0 > 36)
+    {
+        gWeatherPtr->unknown_6E0 = 0;
+        if (gWeatherPtr->snowflakeSpriteCount < gWeatherPtr->unknown_6E5)
+            CreateSnowflakeSprite();
+        else
+            RemoveSnowflakeSprite();
+    }
+    return (gWeatherPtr->snowflakeSpriteCount != gWeatherPtr->unknown_6E5);
+}
+
+void sub_807EC40(struct Sprite *);
+
+bool8 CreateSnowflakeSprite(void)
+{
+    u8 spriteId = CreateSpriteAtEnd(&sSnowflakeSpriteTemplate, 0, 0, 78);
+
+    if (spriteId == 64)
+        return FALSE;
+    gSprites[spriteId].data[4] = gWeatherPtr->snowflakeSpriteCount;
+    sub_807EC40(&gSprites[spriteId]);
+    gSprites[spriteId].coordOffsetEnabled = TRUE;
+    gWeatherPtr->sprites.s1.snowflakeSprites[gWeatherPtr->snowflakeSpriteCount++] = &gSprites[spriteId];
+    return TRUE;
+}
+
+bool8 RemoveSnowflakeSprite(void)
+{
+    if (gWeatherPtr->snowflakeSpriteCount != 0)
+    {
+        DestroySprite(gWeatherPtr->sprites.s1.snowflakeSprites[--gWeatherPtr->snowflakeSpriteCount]);
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void sub_807EC40(struct Sprite *sprite)
+{
+    u16 r4 = ((sprite->data[4] * 5) & 7) * 30 + (Random() % 30);
+    u16 r6;
+
+    sprite->pos1.y = -3 - (gSpriteCoordOffsetY + sprite->centerToCornerVecY);
+    sprite->pos1.x = r4 - (gSpriteCoordOffsetX + sprite->centerToCornerVecX);
+    sprite->data[0] = sprite->pos1.y * 128;
+    sprite->pos2.x = 0;
+    r6 = Random();
+    sprite->data[1] = (r6 & 3) * 5 + 64;
+    sprite->data[7] = (r6 & 3) * 5 + 64;
+    StartSpriteAnim(sprite, (r6 & 1) ? 0 : 1);
+    sprite->data[3] = 0;
+    sprite->data[2] = ((r6 & 3) == 0) ? 2 : 1;
+    sprite->data[6] = (r6 & 0x1F) + 210;
+    sprite->data[5] = 0;
+}
+
+void sub_807ECEC(struct Sprite *sprite)
+{
+    if (gWeatherPtr->unknown_6E2 > 18)
+    {
+        sprite->invisible = FALSE;
+        sprite->callback = sub_807ED48;
+        sprite->pos1.y = 0xFA - (gSpriteCoordOffsetY + sprite->centerToCornerVecY);
+        sprite->data[0] = sprite->pos1.y * 128;
+        gWeatherPtr->unknown_6E2 = 0;
+    }
+}
+
+void sub_807ED48(struct Sprite *sprite)
+{
+    s16 r3;
+    s16 r2;
+
+    sprite->data[0] += sprite->data[1];
+    sprite->pos1.y = sprite->data[0] >> 7;
+    sprite->data[3] = (sprite->data[3] + sprite->data[2]) & 0xFF;
+    sprite->pos2.x = gSineTable[sprite->data[3]] / 64;
+
+    r3 = (sprite->pos1.x + sprite->centerToCornerVecX + gSpriteCoordOffsetX) & 0x1FF;
+    if (r3 & 0x100)
+        r3 = -0x100 | r3;  // hmm... what is this?
+    if (r3 < -3)
+        sprite->pos1.x = 242 - (gSpriteCoordOffsetX + sprite->centerToCornerVecX);
+    else if (r3 > 242)
+        sprite->pos1.x = -3 - (gSpriteCoordOffsetX + sprite->centerToCornerVecX);
+
+    r2 = (sprite->pos1.y + sprite->centerToCornerVecY + gSpriteCoordOffsetY) & 0xFF;
+    if (r2 > 163 && r2 < 171)
+    {
+        sprite->pos1.y = 250 - (gSpriteCoordOffsetY + sprite->centerToCornerVecY);
+        sprite->data[0] = sprite->pos1.y * 128;
+        sprite->data[5] = 0;
+        sprite->data[6] = 220;
+    }
+    else if (r2 > 242 && r2 < 250)
+    {
+        sprite->pos1.y = 163;
+        sprite->data[0] = sprite->pos1.y * 128;
+        sprite->data[5] = 0;
+        sprite->data[6] = 220;
+        sprite->invisible = TRUE;
+        sprite->callback = sub_807ECEC;
+    }
+
+    sprite->data[5]++;
+    if (sprite->data[5] == sprite->data[6])
+    {
+        sub_807EC40(sprite);
+        sprite->pos1.y = 250;
+        sprite->invisible = TRUE;
+        sprite->callback = sub_807ECEC;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Medium Rain
+//------------------------------------------------------------------------------
+
+void MedRain_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6D6 = 0;
+    gWeatherPtr->unknown_6DB = 4;
+    gWeatherPtr->unknown_6DC = 0;
+    gWeatherPtr->unknown_6D9 = 16;
+    gWeatherPtr->unknown_6C1 = 3;
+    gWeatherPtr->unknown_6C2 = 20;
+    gWeatherPtr->weatherGfxLoaded = FALSE;  // duplicate assignment
+    gWeatherPtr->unknown_6ED = 0;
+    SetRainStrengthFromSoundEffect(SE_T_AME);
+}
+
+void Rain_Main(void);
+
+void MedRain_InitAll(void)
+{
+    MedRain_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Rain_Main();
+}
+
+//------------------------------------------------------------------------------
+// Heavy Rain
+//------------------------------------------------------------------------------
+
+void HeavyRain_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6D6 = 0;
+    gWeatherPtr->unknown_6DB = 4;
+    gWeatherPtr->unknown_6DC = 1;
+    gWeatherPtr->unknown_6D9 = 24;
+    gWeatherPtr->unknown_6C1 = 3;
+    gWeatherPtr->unknown_6C2 = 20;
+    gWeatherPtr->weatherGfxLoaded = FALSE;  // duplicate assignment
+    SetRainStrengthFromSoundEffect(SE_T_OOAME);
+}
+
+void HeavyRain_InitAll(void)
+{
+    HeavyRain_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Rain_Main();
+}
+
+void UpdateThunderSound(void);
+void SetThunderCounter(u16);
+
+void Rain_Main(void)
+{
+    UpdateThunderSound();
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        LoadRainSpriteSheet();
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        if (CreateRainSprite())
+            break;
+        gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (sub_807E8E8())
+            break;
+        gWeatherPtr->weatherGfxLoaded = TRUE;
+        gWeatherPtr->initStep++;
+        break;
+    case 3:
+        if (gWeatherPtr->unknown_6C6 == 0)
+            break;
+        gWeatherPtr->initStep = 6;
+        break;
+    case 4:
+        gWeatherPtr->unknown_6EA = 1;
+        gWeatherPtr->unknown_6E6 = (Random() % 360) + 360;
+        gWeatherPtr->initStep++;
+        // fall through
+    case 5:
+        if (--gWeatherPtr->unknown_6E6 != 0)
+            break;
+        gWeatherPtr->initStep++;
+        break;
+    case 6:
+        gWeatherPtr->unknown_6EA = 1;
+        gWeatherPtr->unknown_6EB = Random() % 2;
+        gWeatherPtr->initStep++;
+        break;
+    case 7:
+        gWeatherPtr->unknown_6EC = (Random() & 1) + 1;
+        gWeatherPtr->initStep++;
+        // fall through
+    case 8:
+        sub_807D5BC(19);
+        if (gWeatherPtr->unknown_6EB == 0 && gWeatherPtr->unknown_6EC == 1)
+            SetThunderCounter(20);
+        gWeatherPtr->unknown_6E6 = (Random() % 3) + 6;
+        gWeatherPtr->initStep++;
+        break;
+    case 9:
+        if (--gWeatherPtr->unknown_6E6 != 0)
+            break;
+        sub_807D5BC(3);
+        gWeatherPtr->unknown_6EA = 1;
+        if (--gWeatherPtr->unknown_6EC != 0)
+        {
+            gWeatherPtr->unknown_6E6 = (Random() % 16) + 60;
+            gWeatherPtr->initStep = 10;
+        }
+        else if (gWeatherPtr->unknown_6EB == 0)
+        {
+            gWeatherPtr->initStep = 4;
+        }
+        else
+        {
+            gWeatherPtr->initStep = 11;
+        }
+        break;
+    case 10:
+        if (--gWeatherPtr->unknown_6E6 != 0)
+            break;
+        gWeatherPtr->initStep = 8;
+        break;
+    case 11:
+        gWeatherPtr->unknown_6E6 = (Random() % 16) + 60;
+        gWeatherPtr->initStep++;
+        break;
+    case 12:
+        if (--gWeatherPtr->unknown_6E6 != 0)
+            break;
+        SetThunderCounter(100);
+        sub_807D5BC(19);
+        // Why use "% 16" everywhere else and "& 0xF" here. So dumb.
+        gWeatherPtr->unknown_6E6 = (Random() & 0xF) + 30;
+        gWeatherPtr->initStep++;
+        break;
+    case 13:
+        if (--gWeatherPtr->unknown_6E6 != 0)
+            break;
+        sub_807D5F0(19, 3, 5);
+        gWeatherPtr->initStep++;
+        break;
+    case 14:
+        if (gWeatherPtr->unknown_6C6 != 3)
+            break;
+        gWeatherPtr->unknown_6EA = 1;
+        gWeatherPtr->initStep = 4;
+        break;
+    }
+}
+
+bool8 Rain_Finish(void)
+{
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        gWeatherPtr->unknown_6EA = 0;
+        gWeatherPtr->finishStep++;
+        // fall through
+    case 1:
+        Rain_Main();
+        if (gWeatherPtr->unknown_6EA != 0)
+        {
+            if (gWeatherPtr->nextWeather == WEATHER_RAIN_LIGHT
+             || gWeatherPtr->nextWeather == WEATHER_RAIN_MED
+             || gWeatherPtr->nextWeather == WEATHER_RAIN_HEAVY)
+                return FALSE;
+            gWeatherPtr->unknown_6D9 = 0;
+            gWeatherPtr->finishStep++;
+        }
+        break;
+    case 2:
+        if (sub_807E8E8())
+            break;
+        DestroyRainSprites();
+        gWeatherPtr->unknown_6ED = 0;
+        gWeatherPtr->finishStep++;
+        return FALSE;
+    default:
+        return FALSE;
+    }
+    return TRUE;
+}
+
+void SetThunderCounter(u16 max)
+{
+    if (gWeatherPtr->unknown_6ED == 0)
+    {
+        gWeatherPtr->thunderCounter = Random() % max;
+        gWeatherPtr->unknown_6ED = 1;
+    }
+}
+
+void UpdateThunderSound(void)
+{
+    if (gWeatherPtr->unknown_6ED == 1)
+    {
+        if (gWeatherPtr->thunderCounter == 0)
+        {
+            if (IsSEPlaying())
+                return;
+            if (Random() & 1)
+                PlaySE(SE_T_KAMI);
+            else
+                PlaySE(SE_T_KAMI2);
+            gWeatherPtr->unknown_6ED = 0;
+        }
+        else
+        {
+            gWeatherPtr->thunderCounter--;
+        }
+    }
+}
+
+//------------------------------------------------------------------------------
+// Fog 1
+//------------------------------------------------------------------------------
+
+void Fog1_Main(void);
+static void CreateFog1Sprites(void);
+static void DestroyFog1Sprites(void);
+
+void Fog1_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 20;
+    if (gWeatherPtr->fog1SpritesCreated == 0)
+    {
+        gWeatherPtr->unknown_6F0 = 0;
+        gWeatherPtr->unknown_6F2 = 0;
+        gWeatherPtr->fog1ScrollPosX = 0;
+        Weather_SetBlendCoeffs(0, 16);
+    }
+}
+
+void Fog1_InitAll(void)
+{
+    Fog1_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Fog1_Main();
+}
+
+void Fog1_Main(void)
+{
+    gWeatherPtr->fog1ScrollPosX = (gSpriteCoordOffsetX - gWeatherPtr->unknown_6F2) & 0xFF;
+    if (++gWeatherPtr->unknown_6F0 > 3)
+    {
+        gWeatherPtr->unknown_6F0 = 0;
+        gWeatherPtr->unknown_6F2++;
+    }
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        CreateFog1Sprites();
+        if (gWeatherPtr->currWeather == WEATHER_FOG_1)
+            Weather_SetTargetBlendCoeffs(12, 8, 3);
+        else
+            Weather_SetTargetBlendCoeffs(4, 16, 0);
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        if (Weather_UpdateBlend())
+        {
+            gWeatherPtr->weatherGfxLoaded = TRUE;
+            gWeatherPtr->initStep++;
+        }
+        break;
+    }
+}
+
+bool8 Fog1_Finish(void)
+{
+    gWeatherPtr->fog1ScrollPosX = (gSpriteCoordOffsetX - gWeatherPtr->unknown_6F2) & 0xFF;
+    if (++gWeatherPtr->unknown_6F0 > 3)
+    {
+        gWeatherPtr->unknown_6F0 = 0;
+        gWeatherPtr->unknown_6F2++;
+    }
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        Weather_SetTargetBlendCoeffs(0, 16, 3);
+        gWeatherPtr->finishStep++;
+        break;
+    case 1:
+        if (!Weather_UpdateBlend())
+            break;
+        gWeatherPtr->finishStep++;
+        break;
+    case 2:
+        DestroyFog1Sprites();
+        gWeatherPtr->finishStep++;
+        break;
+    default:
+        return FALSE;
+    }
+    return TRUE;
+}
+
+#define sprColumn data[0]
+
+static void Fog1SpriteCallback(struct Sprite *sprite)
+{
+    sprite->pos2.y = (u8)gSpriteCoordOffsetY;
+    sprite->pos1.x = gWeatherPtr->fog1ScrollPosX + 32 + sprite->sprColumn * 64;
+    if (sprite->pos1.x > 0x10F)
+    {
+        sprite->pos1.x = 480 + gWeatherPtr->fog1ScrollPosX - (4 - sprite->sprColumn) * 64;
+        sprite->pos1.x &= 0x1FF;
+    }
+}
+
+static void CreateFog1Sprites(void)
+{
+    u16 i;
+
+    if (!gWeatherPtr->fog1SpritesCreated)
+    {
+        struct SpriteSheet fog1SpriteSheet = {gWeatherFog1Tiles, sizeof(gWeatherFog1Tiles), 0x1201};
+
+        LoadSpriteSheet(&fog1SpriteSheet);
+        for (i = 0; i < 20; i++)
+        {
+            u8 spriteId = CreateSpriteAtEnd(&sFog1SpriteTemplate, 0, 0, 0xFF);
+
+            if (spriteId != MAX_SPRITES)
+            {
+                struct Sprite *sprite = &gSprites[spriteId];
+
+                sprite->sprColumn = i % 5;
+                sprite->pos1.x = (i % 5) * 64 + 32;
+                sprite->pos1.y = (i / 5) * 64 + 32;
+                gWeatherPtr->sprites.s2.fog1Sprites[i] = sprite;
+            }
+            else
+            {
+                gWeatherPtr->sprites.s2.fog1Sprites[i] = NULL;
+            }
+        }
+        gWeatherPtr->fog1SpritesCreated = TRUE;
+    }
+}
+
+#undef sprColumn
+
+static void DestroyFog1Sprites(void)
+{
+    u16 i;
+
+    if (gWeatherPtr->fog1SpritesCreated)
+    {
+        for (i = 0; i < 20; i++)
+        {
+            if (gWeatherPtr->sprites.s2.fog1Sprites[i] != NULL)
+                DestroySprite(gWeatherPtr->sprites.s2.fog1Sprites[i]);
+        }
+        FreeSpriteTilesByTag(0x1201);
+        gWeatherPtr->fog1SpritesCreated = 0;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Volcanic ash
+//------------------------------------------------------------------------------
+
+void Ash_Main(void);
+void LoadAshSpriteSheet(void);
+void CreateAshSprites(void);
+void DestroyAshSprites(void);
+
+void Ash_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = FALSE;
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 20;
+    gWeatherPtr->unknown_6FE = 20;
+    if (!gWeatherPtr->ashSpritesCreated)
+    {
+        Weather_SetBlendCoeffs(0, 16);
+        REG_BLDALPHA = BLDALPHA_BLEND(64, 63);  // Those aren't even valid coefficients!
+    }
+}
+
+void Ash_InitAll(void)
+{
+    Ash_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Ash_Main();
+}
+
+void Ash_Main(void)
+{
+    gWeatherPtr->unknown_6FC = gSpriteCoordOffsetX & 0x1FF;
+    while (gWeatherPtr->unknown_6FC > 0xEF)
+        gWeatherPtr->unknown_6FC -= 0xF0;
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        LoadAshSpriteSheet();
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        if (!gWeatherPtr->ashSpritesCreated)
+            CreateAshSprites();
+        Weather_SetTargetBlendCoeffs(16, 0, 1);
+        gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (!Weather_UpdateBlend())
+            break;
+        gWeatherPtr->weatherGfxLoaded = TRUE;
+        gWeatherPtr->initStep++;
+        break;
+    default:
+        Weather_UpdateBlend();
+        break;
+    }
+}
+
+bool8 Ash_Finish(void)
+{
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        Weather_SetTargetBlendCoeffs(0, 16, 1);
+        gWeatherPtr->finishStep++;
+        break;
+    case 1:
+        if (!Weather_UpdateBlend())
+            break;
+        DestroyAshSprites();
+        gWeatherPtr->finishStep++;
+        break;
+    case 2:
+        REG_BLDALPHA = 0;
+        gWeatherPtr->finishStep++;
+        return FALSE;
+    default:
+        return FALSE;
+    }
+    return TRUE;
+}
+
+static const struct SpriteSheet sAshSpriteSheet = {gWeatherAshTiles, sizeof(gWeatherAshTiles), 0x1202};
+
+void LoadAshSpriteSheet(void)
+{
+    LoadSpriteSheet(&sAshSpriteSheet);
+}
+
+const struct OamData gOamData_839ABB8 =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 1,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 1,
+    .paletteNum = 15,
+    .affineParam = 0,
+};
+
+const union AnimCmd gSpriteAnim_839ABC0[] =
+{
+    ANIMCMD_FRAME(0, 60),
+    ANIMCMD_FRAME(64, 60),
+    ANIMCMD_JUMP(0),
+};
+
+const union AnimCmd *const gSpriteAnimTable_839ABCC[] =
+{
+    gSpriteAnim_839ABC0,
+};
+
+void sub_807FAA8(struct Sprite *);
+static const struct SpriteTemplate sAshSpriteTemplate =
+{
+    .tileTag = 4610,
+    .paletteTag = 4608,
+    .oam = &gOamData_839ABB8,
+    .anims = gSpriteAnimTable_839ABCC,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = sub_807FAA8,
+};
+
+void CreateAshSprites(void)
+{
+    u8 i;
+
+    if (!gWeatherPtr->ashSpritesCreated)
+    {
+        for (i = 0; i < 20; i++)
+        {
+            u8 spriteId = CreateSpriteAtEnd(&sAshSpriteTemplate, 0, 0, 0x4E);
+
+            if (spriteId != MAX_SPRITES)
+            {
+                struct Sprite *sprite = &gSprites[spriteId];
+
+                sprite->data[1] = 0;
+                sprite->data[2] = (u8)(i % 5);
+                sprite->data[3] = (u8)(i / 5);
+                sprite->data[0] = sprite->data[3] * 64 + 32;
+                gWeatherPtr->sprites.s2.ashSprites[i] = sprite;
+            }
+            else
+            {
+                gWeatherPtr->sprites.s2.ashSprites[i] = NULL;
+            }
+        }
+        gWeatherPtr->ashSpritesCreated = TRUE;
+    }
+}
+
+void DestroyAshSprites(void)
+{
+    u16 i;
+
+    if (gWeatherPtr->ashSpritesCreated)
+    {
+        for (i = 0; i < 20; i++)
+        {
+            if (gWeatherPtr->sprites.s2.ashSprites[i] != NULL)
+                DestroySprite(gWeatherPtr->sprites.s2.ashSprites[i]);
+        }
+        FreeSpriteTilesByTag(0x1202);
+        gWeatherPtr->ashSpritesCreated = FALSE;
+    }
+}
+
+void sub_807FAA8(struct Sprite *sprite)
+{
+    sprite->data[1]++;
+    if (sprite->data[1] > 5)
+    {
+        sprite->data[1] = 0;
+        sprite->data[0]++;
+    }
+    sprite->pos1.y = gSpriteCoordOffsetY + sprite->data[0];
+    sprite->pos1.x = gWeatherPtr->unknown_6FC + 32 + sprite->data[2] * 64;
+    if (sprite->pos1.x > 271)
+    {
+        sprite->pos1.x = gWeatherPtr->unknown_6FC + 0x1E0 - (4 - sprite->data[2]) * 64;
+        sprite->pos1.x &= 0x1FF;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Fog 2
+//------------------------------------------------------------------------------
+
+void Fog2_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = 0;
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 20;
+    gWeatherPtr->unknown_6F0 = 0;
+    gWeatherPtr->unknown_6F2 = 1;
+    if (gWeatherPtr->fog2SpritesCreated == 0)
+    {
+        gWeatherPtr->unknown_71C = 0;
+        gWeatherPtr->unknown_71E = 0;
+        gWeatherPtr->unknown_720 = 0;
+        gWeatherPtr->unknown_722 = 0;
+        gWeatherPtr->unknown_718 = 0;
+        gWeatherPtr->unknown_71A = 0;
+        Weather_SetBlendCoeffs(0, 16);
+    }
+}
+
+void Fog2_Main(void);
+
+void Fog2_InitAll(void)
+{
+    Fog2_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Fog2_Main();
+}
+
+void sub_807FC9C(void);
+void CreateFog2Sprites(void);
+
+void Fog2_Main(void)
+{
+    sub_807FC9C();
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        CreateFog2Sprites();
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        Weather_SetTargetBlendCoeffs(12, 8, 8);
+        gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (!Weather_UpdateBlend())
+            break;
+        gWeatherPtr->weatherGfxLoaded = TRUE;
+        gWeatherPtr->initStep++;
+        break;
+    }
+}
+
+void DestroyFog2Sprites(void);
+
+bool8 Fog2_Finish(void)
+{
+    sub_807FC9C();
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        Weather_SetTargetBlendCoeffs(0, 16, 1);
+        gWeatherPtr->finishStep++;
+        break;
+    case 1:
+        if (!Weather_UpdateBlend())
+            break;
+        gWeatherPtr->finishStep++;
+        break;
+    case 2:
+        DestroyFog2Sprites();
+        gWeatherPtr->finishStep++;
+        break;
+    default:
+        return FALSE;
+    }
+    return TRUE;
+}
+
+void sub_807FC9C(void)
+{
+    if (++gWeatherPtr->unknown_71C > 2)
+    {
+        gWeatherPtr->unknown_720++;
+        gWeatherPtr->unknown_71C = 0;
+    }
+
+    if (++gWeatherPtr->unknown_71E > 4)
+    {
+        gWeatherPtr->unknown_722++;
+        gWeatherPtr->unknown_71E = 0;
+    }
+
+    gWeatherPtr->unknown_718 = (gSpriteCoordOffsetX - gWeatherPtr->unknown_720) & 0xFF;
+    gWeatherPtr->unknown_71A = gSpriteCoordOffsetY + gWeatherPtr->unknown_722;
+}
+
+extern const struct SpriteTemplate sFog2SpriteTemplate;  // defined below
+
+void CreateFog2Sprites(void)
+{
+    u16 i;
+
+    if (!gWeatherPtr->fog2SpritesCreated)
+    {
+        struct SpriteSheet fog2SpriteSheet = {gWeatherFog2Tiles, sizeof(gWeatherFog2Tiles), 0x1203};
+
+        LoadSpriteSheet(&fog2SpriteSheet);
+        for (i = 0; i < 20; i++)
+        {
+            u8 spriteId = CreateSpriteAtEnd(&sFog2SpriteTemplate, 0, (i / 5) * 64, 0xFF);
+
+            if (spriteId != MAX_SPRITES)
+            {
+                struct Sprite *sprite = &gSprites[spriteId];
+
+                sprite->data[0] = i % 5;
+                sprite->data[1] = i / 5;
+                gWeatherPtr->sprites.s2.fog2Sprites[i] = sprite;
+            }
+            else
+            {
+                gWeatherPtr->sprites.s2.fog2Sprites[i] = NULL;
+            }
+        }
+        gWeatherPtr->fog2SpritesCreated = TRUE;
+    }
+}
+
+const struct OamData gOamData_839ABF0 =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 1,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 2,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+const union AnimCmd gSpriteAnim_839ABF8[] =
+{
+    ANIMCMD_FRAME(0, 16),
+    ANIMCMD_END,
+};
+
+const union AnimCmd *const gSpriteAnimTable_839AC00[] =
+{
+    gSpriteAnim_839ABF8,
+};
+
+void Fog2SpriteCallback(struct Sprite *);
+const struct SpriteTemplate sFog2SpriteTemplate =
+{
+    .tileTag = 4611,
+    .paletteTag = 4608,
+    .oam = &gOamData_839ABF0,
+    .anims = gSpriteAnimTable_839AC00,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = Fog2SpriteCallback,
+};
+
+void DestroyFog2Sprites(void)
+{
+    u16 i;
+
+    if (gWeatherPtr->fog2SpritesCreated)
+    {
+        for (i = 0; i < 20; i++)
+        {
+            if (gWeatherPtr->sprites.s2.fog2Sprites[i] != NULL)
+                DestroySprite(gWeatherPtr->sprites.s2.fog2Sprites[i]);
+        }
+        FreeSpriteTilesByTag(0x1203);
+        gWeatherPtr->fog2SpritesCreated = FALSE;
+    }
+}
+
+void Fog2SpriteCallback(struct Sprite *sprite)
+{
+    sprite->pos2.y = gWeatherPtr->unknown_71A;
+    sprite->pos1.x = gWeatherPtr->unknown_718 + 32 + sprite->data[0] * 64;
+    if (sprite->pos1.x > 271)
+    {
+        sprite->pos1.x = gWeatherPtr->unknown_718 + 0x1E0 - (4 - sprite->data[0]) * 64;
+        sprite->pos1.x &= 0x1FF;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Sandstorm
+//------------------------------------------------------------------------------
+
+void Sandstorm_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->weatherGfxLoaded = 0;
+    gWeatherPtr->unknown_6C1 = 0;
+    gWeatherPtr->unknown_6C2 = 20;
+    if (gWeatherPtr->sandstormSprites1Created == 0)
+    {
+        gWeatherPtr->unknown_704 = gWeatherPtr->unknown_708 = 0;
+        gWeatherPtr->unknown_712 = 8;
+        gWeatherPtr->unknown_714 = 0;
+        // Dead code. How does the compiler not optimize this out?
+        if (gWeatherPtr->unknown_712 > 0x5F)
+            gWeatherPtr->unknown_712 = 0x80 - gWeatherPtr->unknown_712;
+        Weather_SetBlendCoeffs(0, 16);
+    }
+}
+
+void Sandstorm_Main(void);
+
+void Sandstorm_InitAll(void)
+{
+    Sandstorm_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Sandstorm_Main();
+}
+
+void sub_808002C(void);
+void sub_8080064(void);
+void CreateSandstormSprites_1(void);
+void CreateSandstormSprites_2(void);
+
+void Sandstorm_Main(void)
+{
+    sub_8080064();
+    sub_808002C();
+    if (gWeatherPtr->unknown_712 > 0x5F)
+        gWeatherPtr->unknown_712 = 32;
+    switch (gWeatherPtr->initStep)
+    {
+    case 0:
+        CreateSandstormSprites_1();
+        CreateSandstormSprites_2();
+        gWeatherPtr->initStep++;
+        break;
+    case 1:
+        Weather_SetTargetBlendCoeffs(16, 0, 0);
+        gWeatherPtr->initStep++;
+        break;
+    case 2:
+        if (!Weather_UpdateBlend())
+            break;
+        gWeatherPtr->weatherGfxLoaded = TRUE;
+        gWeatherPtr->initStep++;
+        break;
+    }
+}
+
+void sub_80800E4(void);
+
+bool8 Sandstorm_Finish(void)
+{
+    sub_8080064();
+    sub_808002C();
+    switch (gWeatherPtr->finishStep)
+    {
+    case 0:
+        Weather_SetTargetBlendCoeffs(0, 16, 0);
+        gWeatherPtr->finishStep++;
+        break;
+    case 1:
+        if (!Weather_UpdateBlend())
+            break;
+        gWeatherPtr->finishStep++;
+        break;
+    case 2:
+        sub_80800E4();
+        gWeatherPtr->finishStep++;
+        break;
+    default:
+        return FALSE;
+    }
+    return TRUE;
+}
+
+void sub_808002C(void)
+{
+    if (gWeatherPtr->unknown_714++ > 4)
+    {
+        gWeatherPtr->unknown_712++;
+        gWeatherPtr->unknown_714 = 0;
+    }
+}
+
+void sub_8080064(void)
+{
+    gWeatherPtr->unknown_704 -= gSineTable[gWeatherPtr->unknown_712] * 4;
+    gWeatherPtr->unknown_708 -= gSineTable[gWeatherPtr->unknown_712];
+    gWeatherPtr->unknown_70E = (gSpriteCoordOffsetX + (gWeatherPtr->unknown_704 >> 8)) & 0xFF;
+    gWeatherPtr->unknown_710 = gSpriteCoordOffsetY + (gWeatherPtr->unknown_708 >> 8);
+}
+
+void sub_80800E4(void)
+{
+    u16 i;
+
+    if (gWeatherPtr->sandstormSprites1Created)
+    {
+        for (i = 0; i < 20; i++)
+        {
+            if (gWeatherPtr->sprites.s2.sandstormSprites1[i] != NULL)
+                DestroySprite(gWeatherPtr->sprites.s2.sandstormSprites1[i]);
+        }
+        gWeatherPtr->sandstormSprites1Created = FALSE;
+        FreeSpriteTilesByTag(0x1204);
+    }
+
+    if (gWeatherPtr->sandstormSprites2Created)
+    {
+        for (i = 0; i < 5; i++)
+        {
+            if (gWeatherPtr->sprites.s2.sandstormSprites2[i] != NULL)
+                DestroySprite(gWeatherPtr->sprites.s2.sandstormSprites2[i]);
+        }
+        gWeatherPtr->sandstormSprites2Created = FALSE;
+    }
+}
+
+const struct OamData gOamData_839AC1C =
+{
+    .y = 0,
+    .affineMode = 0,
+    .objMode = 1,
+    .mosaic = 0,
+    .bpp = 0,
+    .shape = 0,
+    .x = 0,
+    .matrixNum = 0,
+    .size = 3,
+    .tileNum = 0,
+    .priority = 1,
+    .paletteNum = 0,
+    .affineParam = 0,
+};
+
+const union AnimCmd gSpriteAnim_839AC24[] =
+{
+    ANIMCMD_FRAME(0, 3),
+    ANIMCMD_END,
+};
+
+const union AnimCmd gSpriteAnim_839AC2C[] =
+{
+    ANIMCMD_FRAME(64, 3),
+    ANIMCMD_END,
+};
+
+const union AnimCmd *const gSpriteAnimTable_839AC34[] =
+{
+    gSpriteAnim_839AC24,
+    gSpriteAnim_839AC2C,
+};
+
+void SandstormSpriteCallback1(struct Sprite *);
+const struct SpriteTemplate sSandstormSpriteTemplate =
+{
+    .tileTag = 4612,
+    .paletteTag = 4609,
+    .oam = &gOamData_839AC1C,
+    .anims = gSpriteAnimTable_839AC34,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = SandstormSpriteCallback1,
+};
+
+static const struct SpriteSheet sSandstormSpriteSheet = {gWeatherSandstormTiles, sizeof(gWeatherSandstormTiles), 0x1204};
+
+void CreateSandstormSprites_1(void)
+{
+    u16 i;
+
+    if (!gWeatherPtr->sandstormSprites1Created)
+    {
+        LoadSpriteSheet(&sSandstormSpriteSheet);
+        sub_807D8C0(gUnknown_08397128);
+        for (i = 0; i < 20; i++)
+        {
+            u8 spriteId = CreateSpriteAtEnd(&sSandstormSpriteTemplate, 0, (i / 5) * 64, 1);
+
+            if (spriteId != MAX_SPRITES)
+            {
+                gWeatherPtr->sprites.s2.sandstormSprites1[i] = &gSprites[spriteId];
+                gWeatherPtr->sprites.s2.sandstormSprites1[i]->data[0] = i % 5;
+                gWeatherPtr->sprites.s2.sandstormSprites1[i]->data[1] = i / 5;
+            }
+            else
+            {
+                gWeatherPtr->sprites.s2.sandstormSprites1[i] = NULL;
+            }
+        }
+        gWeatherPtr->sandstormSprites1Created = TRUE;
+    }
+}
+
+const u16 gUnknown_0839AC5C[] = {0,	120, 80, 160, 40, 0};
+
+void SandstormSpriteCallback2(struct Sprite *);
+
+void CreateSandstormSprites_2(void)
+{
+    u16 i;
+
+    if (!gWeatherPtr->sandstormSprites2Created)
+    {
+        for (i = 0; i < 5; i++)
+        {
+            u8 spriteId = CreateSpriteAtEnd(&sSandstormSpriteTemplate, i * 48 + 0x18, 0xD0, 1);
+
+            if (spriteId != MAX_SPRITES)
+            {
+                gWeatherPtr->sprites.s2.sandstormSprites2[i] = &gSprites[spriteId];
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->oam.size = 2;
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->data[1] = i * 51;
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->data[0] = 8;
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->data[2] = 0;
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->data[4] = 0x6730;
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->data[3] = gUnknown_0839AC5C[i];
+                StartSpriteAnim(gWeatherPtr->sprites.s2.sandstormSprites2[i], 1);
+                CalcCenterToCornerVec(gWeatherPtr->sprites.s2.sandstormSprites2[i], 0, 2, 0);
+                gWeatherPtr->sprites.s2.sandstormSprites2[i]->callback = SandstormSpriteCallback2;
+            }
+            else
+            {
+                gWeatherPtr->sprites.s2.sandstormSprites2[i] = NULL;
+            }
+            gWeatherPtr->sandstormSprites2Created = TRUE;
+        }
+    }
+}
+
+void SandstormSpriteCallback1(struct Sprite *sprite)
+{
+    sprite->pos2.y = gWeatherPtr->unknown_710;
+    sprite->pos1.x = gWeatherPtr->unknown_70E + 32 + sprite->data[0] * 64;
+    if (sprite->pos1.x > 271)
+    {
+        sprite->pos1.x = gWeatherPtr->unknown_70E + 0x1E0 - (4 - sprite->data[0]) * 64;
+        sprite->pos1.x &= 0x1FF;
+    }
+}
+
+void SandstormSpriteCallback3(struct Sprite *);
+
+void SandstormSpriteCallback2(struct Sprite *sprite)
+{
+    if (--sprite->data[3] == -1)
+        sprite->callback = SandstormSpriteCallback3;
+}
+
+void SandstormSpriteCallback3(struct Sprite *sprite)
+{
+    u32 x;
+    u32 y;
+
+    if (--sprite->pos1.y < -48)
+    {
+        sprite->pos1.y = 208;
+        sprite->data[0] = 4;
+    }
+    x = sprite->data[0] * gSineTable[sprite->data[1]];
+    y = sprite->data[0] * gSineTable[sprite->data[1] + 64];
+    sprite->pos2.x = x >> 8;
+    sprite->pos2.y = y >> 8;
+    sprite->data[1] = (sprite->data[1] + 10) & 0xFF;
+    if (++sprite->data[2] > 8)
+    {
+        sprite->data[2] = 0;
+        sprite->data[0]++;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Weather 11
+//------------------------------------------------------------------------------
+
+void Weather11_InitVars(void)
+{
+    gWeatherPtr->initStep = 0;
+    gWeatherPtr->unknown_6C1 = 3;
+    gWeatherPtr->unknown_6C2 = 20;
+}
+
+void Weather11_InitAll(void)
+{
+    Weather11_InitVars();
+}
+
+void Weather11_Main(void)
+{
+}
+
+bool8 Weather11_Finish(void)
+{
+    return FALSE;
+}
+
+//------------------------------------------------------------------------------
+// Weather 14
+//------------------------------------------------------------------------------
+
+const u8 gUnknown_0839AC68[] = {40, 90, 60, 90, 2, 60, 40, 30};
+
+const struct SpriteSheet gWeatherBubbleSpriteSheet = {gWeatherBubbleTiles, sizeof(gWeatherBubbleTiles), 0x1205};
+
+void Bubbles_InitVars(void)
+{
+    Fog1_InitVars();
+    if (gWeatherPtr->unknown_72E == 0)
+    {
+        LoadSpriteSheet(&gWeatherBubbleSpriteSheet);
+        gWeatherPtr->unknown_728 = 0;
+        gWeatherPtr->unknown_726 = gUnknown_0839AC68[0];
+        gWeatherPtr->unknown_72A = 0;
+        gWeatherPtr->unknown_72C = 0;
+    }
+}
+
+void Bubbles_Main(void);
+
+void Bubbles_InitAll(void)
+{
+    Bubbles_InitVars();
+    while (gWeatherPtr->weatherGfxLoaded == FALSE)
+        Bubbles_Main();
+}
+
+void sub_8080588(u16);
+
+void Bubbles_Main(void)
+{
+    Fog1_Main();
+    if (++gWeatherPtr->unknown_726 > gUnknown_0839AC68[gWeatherPtr->unknown_728])
+    {
+        gWeatherPtr->unknown_726 = 0;
+        if (++gWeatherPtr->unknown_728 > 7)
+            gWeatherPtr->unknown_728 = 0;
+        sub_8080588(gWeatherPtr->unknown_72A);
+        if (++gWeatherPtr->unknown_72A > 12)
+            gWeatherPtr->unknown_72A = 0;
+    }
+}
+
+void sub_8080610(void);
+
+bool8 Bubbles_Finish(void)
+{
+    if (!Fog1_Finish())
+    {
+        sub_8080610();
+        return FALSE;
+    }
+    return TRUE;
+}
+
+const s16 gUnknown_0839AC78[][2] =
+{
+    {120, 160},
+    {376, 160},
+    { 40, 140},
+    {296, 140},
+    {180, 130},
+    {436, 130},
+    { 60, 160},
+    {436, 160},
+    {220, 180},
+    {476, 180},
+    { 10,  90},
+    {266,  90},
+    {256, 160},
+};
+
+const union AnimCmd gSpriteAnim_839ACAC[] =
+{
+    ANIMCMD_FRAME(0, 16),
+    ANIMCMD_FRAME(1, 16),
+    ANIMCMD_END,
+};
+
+const union AnimCmd *const gSpriteAnimTable_839ACB8[] =
+{
+    gSpriteAnim_839ACAC,
+};
+
+extern const struct OamData gOamData_837DF24;
+
+void unc_0807DAB4(struct Sprite *);
+const struct SpriteTemplate gSpriteTemplate_839ACBC =
+{
+    .tileTag = 4613,
+    .paletteTag = 4608,
+    .oam = &gOamData_837DF24,
+    .anims = gSpriteAnimTable_839ACB8,
+    .images = NULL,
+    .affineAnims = gDummySpriteAffineAnimTable,
+    .callback = unc_0807DAB4,
+};
+
+void sub_8080588(u16 a)
+{
+    s16 x = gUnknown_0839AC78[a][0];
+    s16 y = gUnknown_0839AC78[a][1] - gSpriteCoordOffsetY;
+    u8 spriteId = CreateSpriteAtEnd(
+      &gSpriteTemplate_839ACBC,
+      x,
+      y,
+      0);
+
+    if (spriteId != MAX_SPRITES)
+    {
+        gSprites[spriteId].oam.priority = 1;
+        gSprites[spriteId].coordOffsetEnabled = TRUE;
+        gSprites[spriteId].data[0] = 0;
+        gSprites[spriteId].data[1] = 0;
+        gSprites[spriteId].data[2] = 0;
+        gWeatherPtr->unknown_72C++;
+    }
+}
+
+void sub_8080610(void)
+{
+    u16 i;
+
+    for (i = 0; i < 64; i++)
+    {
+        if (gSprites[i].template == &gSpriteTemplate_839ACBC)
+            DestroySprite(&gSprites[i]);
+    }
+    FreeSpriteTilesByTag(0x1205);
+}
+
+void unc_0807DAB4(struct Sprite *sprite)
+{
+    ++sprite->data[0];
+    if (++sprite->data[0] > 8)  // double increment
+    {
+        sprite->data[0] = 0;
+        if (sprite->data[1] == 0)
+        {
+            if (++sprite->pos2.x > 4)
+                sprite->data[1] = 1;
+        }
+        else
+        {
+            if (--sprite->pos2.x <= 0)
+                sprite->data[1] = 0;
+        }
+    }
+    sprite->pos1.y -= 3;
+    if (++sprite->data[2] > 0x77)
+        DestroySprite(sprite);
+}
+
+//------------------------------------------------------------------------------
+
+u8 TranslateWeatherNum(u8);
+void UpdateRainCounter(u8, u8);
+
+void SetSav1Weather(u32 weather)
+{
+    u8 oldWeather = gSaveBlock1.weather;
+
+    gSaveBlock1.weather = TranslateWeatherNum(weather);
+    UpdateRainCounter(gSaveBlock1.weather, oldWeather);
+}
+
+u8 GetSav1Weather(void)
+{
+    return gSaveBlock1.weather;
+}
+
+void SetSav1WeatherFromCurrMapHeader(void)
+{
+    u8 oldWeather = gSaveBlock1.weather;
+
+    gSaveBlock1.weather = TranslateWeatherNum(gMapHeader.weather);
+    UpdateRainCounter(gSaveBlock1.weather, oldWeather);
+}
+
+void SetWeather(u32 weather)
+{
+    SetSav1Weather(weather);
+    DoWeatherEffect(GetSav1Weather());
+}
+
+void SetWeather_Unused(u32 weather)
+{
+    SetSav1Weather(weather);
+    sub_807C988(GetSav1Weather());
+}
+
+void DoCurrentWeather(void)
+{
+    DoWeatherEffect(GetSav1Weather());
+}
+
+void sub_8080750(void)
+{
+    sub_807C988(GetSav1Weather());
+}
+
+static const u8 sWeatherCycle1[] = {2, 3, 5, 3};
+static const u8 sWeatherCycle2[] = {2, 2, 3, 2};
+
+u8 TranslateWeatherNum(u8 weather)
+{
+    switch (weather)
+    {
+    case 0:  return 0;
+    case 1:  return 1;
+    case 2:  return 2;
+    case 3:  return 3;
+    case 4:  return 4;
+    case 5:  return 5;
+    case 6:  return 6;
+    case 7:  return 7;
+    case 8:  return 8;
+    case 9:  return 9;
+    case 10: return 10;
+    case 11: return 11;
+    case 12: return 12;
+    case 13: return 13;
+    case 14: return 14;
+    case 20: return sWeatherCycle1[gSaveBlock1.filler_2F];
+    case 21: return sWeatherCycle2[gSaveBlock1.filler_2F];
+    default: return 0;
+    }
+}
+
+void UpdateWeatherPerDay(u16 increment)
+{
+    u16 weatherStage = gSaveBlock1.filler_2F + increment;
+    weatherStage %= 4;
+    gSaveBlock1.filler_2F = weatherStage;
+}
+
+void UpdateRainCounter(u8 newWeather, u8 oldWeather)
+{
+    if (newWeather != oldWeather
+     && (newWeather == WEATHER_RAIN_LIGHT || newWeather == WEATHER_RAIN_MED))
+        IncrementGameStat(0x28);
+}
diff --git a/src/field/overworld.c b/src/field/overworld.c
index e6a6a9f11..ca59426fa 100644
--- a/src/field/overworld.c
+++ b/src/field/overworld.c
@@ -602,7 +602,7 @@ void sub_80538F0(u8 mapGroup, u8 mapNum)
     prev_quest_postbuffer_cursor_backup_reset();
     sub_8082BD0(mapGroup, mapNum);
     DoTimeBasedEvents();
-    sub_80806E4();
+    SetSav1WeatherFromCurrMapHeader();
     ChooseAmbientCrySpecies();
     SetDefaultFlashLevel();
     Overworld_ClearSavedMusic();
@@ -638,7 +638,7 @@ void sub_8053994(u32 a1)
     sub_8082BD0(gSaveBlock1.location.mapGroup, gSaveBlock1.location.mapNum);
     if (a1 != 1)
         DoTimeBasedEvents();
-    sub_80806E4();
+    SetSav1WeatherFromCurrMapHeader();
     ChooseAmbientCrySpecies();
     if (v2)
         FlagClear(SYS_USE_FLASH);
@@ -1737,7 +1737,7 @@ void sub_8054D4C(u32 a1)
     sub_805C7C4(0);
     FieldEffectActiveListClear();
     InitFieldMessageBox();
-    sub_807C828();
+    StartWeather();
     sub_8080750();
     if (!a1)
         SetUpFieldTasks();
diff --git a/src/field/scrcmd.c b/src/field/scrcmd.c
index 28aa3355a..e6305d9c4 100644
--- a/src/field/scrcmd.c
+++ b/src/field/scrcmd.c
@@ -692,7 +692,7 @@ bool8 ScrCmd_setweather(struct ScriptContext *ctx)
 
 bool8 ScrCmd_resetweather(struct ScriptContext *ctx)
 {
-    sub_80806E4();
+    SetSav1WeatherFromCurrMapHeader();
     return FALSE;
 }