decompile code_0804B9F8.s

src/code_0804B9F8.c

@@ -0,0 +1,37 @@
+#include "global.h"
+#include "utils.h"
+#include "fileScreen.h"
+
+extern u16 gPaletteBuffer[];
+extern u32 gUsedPalettes;
+
+// function pointer to overlay (0x03005e98) in ram calls rom function MakeFadeBuff256
+extern u32 gMakeFadeBuff256;
+typedef void (*fptrMakeFadeBuff256)(u8*, u8*, u16, u8);
+
+void FadeMain() {
+    fptrMakeFadeBuff256 func;
+    u32 usedPalettesTmp, palIdx;
+
+    struct_020354C0* ptrUnk = gUnk_020354C0;
+    usedPalettesTmp = gUsedPalettes;
+    gUsedPalettes = 0;
+    palIdx = 0;
+
+    while (usedPalettesTmp != 0) {
+        if ((usedPalettesTmp & 1) == 1) {
+            func = (fptrMakeFadeBuff256)&gMakeFadeBuff256;
+            func(&((u8*)gPaletteBuffer)[palIdx], &PAL_RAM[palIdx], ptrUnk->unk2, ptrUnk->unk1);
+        }
+        palIdx += 0x20;
+
+        ptrUnk++;
+        usedPalettesTmp /= 2;
+    }
+}
+
+void sub_0804FFE4() {
+    MemClear(&gFadeControl, sizeof(gFadeControl));
+    MemClear(&gUnk_020354C0, sizeof(gUnk_020354C0));
+    gFadeControl.mask = 0xffffffff;
+}

src/sub_08050008.c

@@ -2,9 +2,7 @@
 #include "utils.h"
 #include "structures.h"
 
-extern u32 gUnk_020354C0;
-
 void sub_08050008() {
-    MemClear(&gUnk_020354C0, 128);
+    MemClear(&gUnk_020354C0, sizeof(gUnk_020354C0));
     gFadeControl.mask = 0xFFFFFFFF;
 }