Decompile unk_02006234

2 files changed, 81 insertions, 3 deletions

diff --git a/arm9/src/main.c b/arm9/src/main.c
index 44f4127a..82b8b734 100644
--- a/arm9/src/main.c
+++ b/arm9/src/main.c
@@ -156,18 +156,18 @@ THUMB_FUNC void FUN_02000E0C(void)
     {
         if (gBacklightTop.unk14 == NULL)
             return;
-        if (gBacklightTop.unk10 != -1u)
+        if (gBacklightTop.unk10 != SDK_OVERLAY_INVALID_ID)
             HandleLoadOverlay(gBacklightTop.unk10, 0);
         gBacklightTop.unk8 = gBacklightTop.unk10;
         gBacklightTop.unkC = FUN_02006234(gBacklightTop.unk14, &gBacklightTop.unk18, 0);
-        gBacklightTop.unk10 = -1u;
+        gBacklightTop.unk10 = SDK_OVERLAY_INVALID_ID;
         gBacklightTop.unk14 = NULL;
     }
     if (FUN_02006290(gBacklightTop.unkC))
     {
         FUN_02006260(gBacklightTop.unkC);
         gBacklightTop.unkC = 0;
-        if (gBacklightTop.unk8 != -1u)
+        if (gBacklightTop.unk8 != SDK_OVERLAY_INVALID_ID)
             UnloadOverlayByID(gBacklightTop.unk8);
     }
 }
diff --git a/arm9/src/unk_02006234.c b/arm9/src/unk_02006234.c
new file mode 100644
index 00000000..8915ab83
--- /dev/null
+++ b/arm9/src/unk_02006234.c
@@ -0,0 +1,78 @@
+#include "global.h"
+#include "main.h"
+#include "poke_overlay.h"
+#include "heap.h"
+
+THUMB_FUNC struct UnkStruct_02006234 * FUN_02006234(struct Unk21DBE18 * ovly_mgr, int * a1, u32 heap_id)
+{
+    struct UnkStruct_02006234 * ret = (struct UnkStruct_02006234 *)AllocFromHeap(heap_id, sizeof(struct UnkStruct_02006234));
+    ret->ovly_mgr = *ovly_mgr;
+    ret->unk10 = 0;
+    ret->unk14 = 0;
+    ret->unk18 = a1;
+    ret->unk1C = NULL;
+    ret->unk20 = 0;
+    ret->unk24 = 0;
+    return ret;
+}
+
+THUMB_FUNC void FUN_02006260(struct UnkStruct_02006234 * a0)
+{
+    FreeToHeap(a0);
+}
+
+THUMB_FUNC void * FUN_02006268(struct UnkStruct_02006234 * a0, u32 size, u32 heap_id)
+{
+    return a0->unk1C = AllocFromHeap(heap_id, size);
+}
+
+THUMB_FUNC void * FUN_02006278(struct UnkStruct_02006234 * a0)
+{
+    return a0->unk1C;
+}
+
+THUMB_FUNC void FUN_0200627C(struct UnkStruct_02006234 * a0)
+{
+    FreeToHeap(a0->unk1C);
+    a0->unk1C = NULL;
+}
+
+THUMB_FUNC int * FUN_0200628C(struct UnkStruct_02006234 * a0)
+{
+    return a0->unk18;
+}
+
+THUMB_FUNC BOOL FUN_02006290(struct UnkStruct_02006234 * a0)
+{
+    switch (a0->unk10)
+    {
+    case 0:
+        if (a0->ovly_mgr.ovly != SDK_OVERLAY_INVALID_ID)
+            HandleLoadOverlay(a0->ovly_mgr.ovly, 2);
+        a0->unk10 = 1;
+        // fallthrough
+    case 1:
+        if (a0->ovly_mgr.unk0(a0, &a0->unk14) == TRUE)
+        {
+            a0->unk10 = 2;
+            a0->unk14 = 0;
+        }
+        break;
+    case 2:
+        if (a0->ovly_mgr.unk4(a0, &a0->unk14) == TRUE)
+        {
+            a0->unk10 = 3;
+            a0->unk14 = 0;
+        }
+        break;
+    case 3:
+        if (a0->ovly_mgr.unk8(a0, &a0->unk14) == TRUE)
+        {
+            if (a0->ovly_mgr.ovly != SDK_OVERLAY_INVALID_ID)
+                UnloadOverlayByID(a0->ovly_mgr.ovly);
+            return TRUE;
+        }
+        break;
+    }
+    return FALSE;
+}