Decompile DRA func_8012E7A4 (#585)

This is an interesting one!

I have no idea what the function does, but it has a bunch of hard-coded
offsets into g_Entities.

There is also a conditional block, which for some reason is at the top
in US and at the bottom in HD. Also, the US version has a potential
`return`, while HD does not (and will always do the func_8010FAF4 and
g_Player.unk66++).

Otherwise, glad I was able to solve this one and resolve the weirdness
with HD on my own, always nice to have a PR with problems resolved in
advance :)

config/symbols.hd.dra.txt

@@ -155,6 +155,7 @@ D_800B07C8 = 0x800B088C;
 D_800B0830 = 0x800B08F4;
 D_800B083C = 0x800B0900;
 D_800B0858 = 0x800B091C;
+D_800B08CC = 0x800B0990;
 D_800B0914 = 0x800B09D8;
 D_800B0918 = 0x800B09DC;
 D_800B091C = 0x800B09E0;
@@ -1023,10 +1024,12 @@ D_801390D8 = 0x80138CA4;
 g_sfxRingBuffer1 = 0x80138CA8;
 D_801390DE = 0x80138CAA;
 D_801390E0 = 0x80138CAC;
+D_801396E0 = 0x801392AC;
 D_801396E4 = 0x801392B0;
 D_801396E6 = 0x801392B2;
 D_801396E8 = 0x801392B4;
 D_801396EA = 0x801392B6;
+D_801396EC = 0x801392B8;
 D_801396F0 = 0x801392BC;
 D_801396F4 = 0x801392C0;
 D_801396F8 = 0x801392C4;

include/unkstruct.h

@@ -314,4 +314,10 @@ typedef struct Unkstruct_801C7954 {
     /* 0x0A */ u16 y1;
     /* 0x0C */ u16 x3;
     /* 0x0E */ u16 x2;
-} Unkstruct_801C7954; // size = 0x10
+} Unkstruct_801C7954; // size = 0x10
+
+typedef struct {
+    s32 unk0;
+    s32 unk4;
+    s32 unk8;
+} unk_800B08CC; // size = 0xC

src/dra/8D3E8.c

@@ -475,7 +475,66 @@ void func_8012E550(void) {
     }
 }
 
-INCLUDE_ASM("dra/nonmatchings/8D3E8", func_8012E7A4);
+void func_8012E7A4(void) {
+    s32 i;
+    Entity* entity;
+#if defined(VERSION_US)
+    if (g_Entities[16].entityId != 0x22) {
+        if (func_8011AAFC(g_CurrentEntity, 0x23002CU, 0) == NULL) {
+            return;
+        }
+        func_8010FAF4();
+        g_Player.unk66++;
+    }
+#endif
+
+    for (i = 0; i < 6; i++) {
+        D_800B08CC[i].unk0 = 0;
+    }
+
+    D_801396EC = PLAYER.animCurFrame;
+    D_801396E0 = PLAYER.animSet;
+    func_8010E168(1, 4);
+    DestroyEntity(&g_Entities[17]);
+    g_Entities[17].entityId = 0x38;
+    DestroyEntity(&g_Entities[18]);
+    g_Entities[18].entityId = 0x37;
+    DestroyEntity(&g_Entities[19]);
+    g_Entities[19].entityId = 0x39;
+    DestroyEntity(&g_Entities[20]);
+    g_Entities[20].entityId = 0x3A;
+
+    for (entity = &g_Entities[21], i = 0; i < 9; i++, entity++) {
+        DestroyEntity(entity);
+        entity->entityId = 0x3B;
+        entity->params = i;
+    }
+    DestroyEntity(&g_Entities[30]);
+    g_Entities[30].entityId = 0x3C;
+    func_8012CED4();
+    PLAYER.animFrameIdx = 4;
+    PLAYER.animFrameDuration = 4;
+    PLAYER.step_s = 8;
+    D_80138430 = 0x800;
+    PLAYER.unk5A = 0x7E;
+    PLAYER.animSet = 0xF;
+    PLAYER.rotAngle = 0;
+    g_Player.unk48 = 0;
+    g_Player.unk46 = 0;
+    g_Player.unk44 = 0;
+    D_8013842C = 0;
+    PLAYER.velocityX = 0;
+    PLAYER.velocityY = 0;
+    PLAYER.palette = 0x810D;
+    PLAYER.zPriority = g_zEntityCenter.S16.unk0 - 2;
+#if defined(VERSION_HD)
+    if (g_Entities[16].entityId != 0x22) {
+        func_8011AAFC(g_CurrentEntity, 0x23002C, 0);
+        func_8010FAF4();
+        g_Player.unk66++;
+    }
+#endif
+}
 
 INCLUDE_ASM("dra/nonmatchings/8D3E8", func_8012E9C0);
 

src/dra/dra.h

@@ -401,6 +401,7 @@ extern s32 D_800B0798[];
 extern s32 D_800B07C8;
 extern s32 D_800B0830[];
 extern s32 D_800B083C[];
+extern unk_800B08CC D_800B08CC[];
 extern s32 D_800B0914;
 extern s32 D_800B0918;
 extern s32 D_800B091C;
@@ -608,10 +609,12 @@ extern s8 D_801390C4;
 extern GpuBuffer* g_BackBuffer;
 extern u8 D_801390D8;
 extern SfxRingBufferItem g_sfxRingBuffer1[MAX_SND_COUNT];
+extern u16 D_801396E0;
 extern u16 D_801396E4;
 extern Multi D_801396E6;
 extern u16 D_801396E8;
 extern s16 D_801396EA;
+extern u16 D_801396EC;
 extern s32 D_801396F0;
 extern volatile s16 D_801396F4;
 extern s32 D_801396F8[0x20];