decompile save_failed_screen.c

1 files changed, 332 insertions, 0 deletions

diff --git a/src/save_failed_screen.c b/src/save_failed_screen.c
new file mode 100755
index 000000000..546342b9d
--- /dev/null
+++ b/src/save_failed_screen.c
@@ -0,0 +1,332 @@
+#include "global.h"
+#include "text.h"
+#include "main.h"
+#include "palette.h"
+#include "gpu_regs.h"
+#include "bg.h"
+#include "task.h"
+#include "window.h"
+#include "menu.h"
+#include "save.h"
+#include "gba/flash_internal.h"
+
+#define MSG_WIN_TOP 12
+#define CLOCK_WIN_TOP (MSG_WIN_TOP - 4)
+
+extern void AddTextPrinterParametrized2(u8 windowId, u8 fontId, u8 x, u8 y, u8 letterSpacing, u8 lineSpacing, struct TextColor *color, u8 speed, u8 *str);
+
+extern void (*gGameContinueCallback)(void);
+
+extern u32 gDamagedSaveSectors;
+
+extern u16 gUnknown_0203BCFC;
+extern const u8 gUnknown_085B0E04[];
+extern const u8 gUnknown_085B0A80[];
+extern const u8 gUnknown_085B0C0C[];
+extern const u8 gUnknown_085EFDE4[];
+
+extern const struct OamData gUnknown_085EFD80; // sClockOamData
+extern const u8 gUnknown_085EFDAC[8][3]; // sClockFrames
+
+extern const struct BgTemplate gUnknown_085EFD88[];
+extern const struct WindowTemplate gUnknown_085EFD94[];
+extern struct WindowTemplate gUnknown_085EFD9C;
+extern struct WindowTemplate gUnknown_085EFDA4;
+extern struct SaveSection gSaveDataBuffer;
+extern const u32 gUnknown_0850E87C[];
+
+extern const u16 gUnknown_085B0A00[];
+extern const u16 gUnknown_085EFDC4[];
+extern const u16 gUnknown_0850FEFC[];
+extern const u16 gUnknown_0860F074[];
+
+extern u8 gText_SaveFailedCheckingBackup[];
+extern u8 gText_BackupMemoryDamaged[];
+extern u8 gText_CheckCompleted[];
+extern u8 gText_SaveCompleteGameCannotContinue[];
+extern u8 gText_SaveCompletePressA[];
+extern u8 gText_GamePlayCannotBeContinued[];
+
+extern void sub_8179454(void);
+
+extern u8 gDecompressionBuffer[];
+
+struct Unk203BCFC
+{
+    u16 unk0;
+    u16 unk2;
+};
+
+extern struct Unk203BCFC gUnknown_0203BCFE;
+
+struct Unk203BD0E
+{
+    u8 unk0;
+    u8 unk1;
+};
+
+extern struct Unk203BD0E gUnknown_0203BD0E;
+
+void sub_8178FDC(void);
+void sub_8179288(void);
+void sub_8179390(void);
+void sub_81793E0(void);
+bool8 sub_81795AC(u32);
+void sub_8179428(void);
+bool8 sub_8179514(u16 sector);
+
+void sub_8178F44(u8 *text, u8 var1, u8 var2)
+{
+    struct TextColor color;
+
+    color.fgColor = 0;
+    color.bgColor = 15;
+    color.shadowColor = 3;
+    AddTextPrinterParametrized2(gUnknown_0203BD0E.unk0, 1, var1 * 8, var2 * 8 + 1, 0, 0, &color, 0, text);
+}
+
+void DoSaveFailedScreen(u8 saveType)
+{
+    SetMainCallback2(sub_8178FDC);
+    gUnknown_0203BCFC = saveType;
+    gUnknown_0203BCFE.unk0 = 0;
+    gUnknown_0203BCFE.unk2 = 0;
+    gUnknown_0203BD0E.unk0 = 0;
+    gUnknown_0203BD0E.unk1 = 0;
+}
+
+void sub_8178FC8(void)
+{
+    LoadOam();
+    ProcessSpriteCopyRequests();
+    TransferPlttBuffer();
+}
+
+void sub_8178FDC(void)
+{
+    switch(gMain.state)
+    {
+        case 0:
+        default:
+            SetVBlankCallback(NULL);
+            SetGpuReg(REG_OFFSET_DISPCNT, 0);
+            SetGpuReg(REG_OFFSET_BG3CNT, 0);
+            SetGpuReg(REG_OFFSET_BG2CNT, 0);
+            SetGpuReg(REG_OFFSET_BG1CNT, 0);
+            SetGpuReg(REG_OFFSET_BG0CNT, 0);
+            SetGpuReg(REG_OFFSET_BG3HOFS, 0);
+            SetGpuReg(REG_OFFSET_BG3VOFS, 0);
+            SetGpuReg(REG_OFFSET_BG2HOFS, 0);
+            SetGpuReg(REG_OFFSET_BG2VOFS, 0);
+            SetGpuReg(REG_OFFSET_BG1HOFS, 0);
+            SetGpuReg(REG_OFFSET_BG1VOFS, 0);
+            SetGpuReg(REG_OFFSET_BG0HOFS, 0);
+            SetGpuReg(REG_OFFSET_BG0VOFS, 0);
+            // how come this doesnt use the Dma manager?
+            DmaFill16(3, 0, VRAM, VRAM_SIZE);
+            DmaFill32(3, 0, OAM, OAM_SIZE);
+            DmaFill16(3, 0, PLTT, PLTT_SIZE);
+            LZ77UnCompVram(gUnknown_085B0E04, (void *)VRAM);
+            LZ77UnCompVram(gUnknown_085B0A80, (void *)(VRAM + 0x7000));
+            LZ77UnCompVram(gUnknown_085B0C0C, (void *)(VRAM + 0x7800));
+            LZ77UnCompVram(gUnknown_085EFDE4, (void *)(VRAM + 0x10020));
+            ResetBgsAndClearDma3BusyFlags(0);
+            InitBgsFromTemplates(0, gUnknown_085EFD88, 3);
+            SetBgTilemapBuffer(0, (void *)&gDecompressionBuffer[0x2000]);
+            CpuFill32(0, &gDecompressionBuffer[0x2000], 0x800);
+            LoadBgTiles(0, gUnknown_0850E87C, 0x120, 0x214);
+            InitWindows(gUnknown_085EFD94);
+            // AddWindowWithoutTileMap returns a u16/integer, but the info is clobbered into a u8 here resulting in lost info. Bug?
+            gUnknown_0203BD0E.unk0 = AddWindowWithoutTileMap(&gUnknown_085EFD9C);
+            SetWindowAttribute(gUnknown_0203BD0E.unk0, 7, (u32)&gDecompressionBuffer[0x2800]);
+            gUnknown_0203BD0E.unk1 = AddWindowWithoutTileMap(&gUnknown_085EFDA4);
+            SetWindowAttribute(gUnknown_0203BD0E.unk1, 7, (u32)&gDecompressionBuffer[0x3D00]);
+            DeactivateAllTextPrinters();
+            ResetSpriteData();
+            ResetTasks();
+            ResetPaletteFade();
+            LoadPalette(gUnknown_085B0A00, 0, 0x40);
+            LoadPalette(gUnknown_085EFDC4, 0x100, 0x20);
+            LoadPalette(gUnknown_0850FEFC, 0xE0, 0x20);
+            LoadPalette(gUnknown_0860F074, 0xF0, 0x20);
+            SetWindowBorderStyle(gUnknown_0203BD0E.unk0, FALSE, 0x214, 0xE);
+            SetWindowBorderStyle(gUnknown_0203BD0E.unk1, FALSE, 0x214, 0xE);
+            FillWindowPixelBuffer(gUnknown_0203BD0E.unk1, 0x11); // backwards?
+            FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+            CopyWindowToVram(gUnknown_0203BD0E.unk1, 2); // again?
+            CopyWindowToVram(gUnknown_0203BD0E.unk0, 1);
+            sub_8178F44(gText_SaveFailedCheckingBackup, 1, 0);
+            BeginNormalPaletteFade(0xFFFFFFFF, 0, 16, 0, 0);
+            EnableInterrupts(1);
+            SetVBlankCallback(sub_8178FC8);
+            SetGpuReg(0, 0x1040);
+            ShowBg(0);
+            ShowBg(2);
+            ShowBg(3);
+            gMain.state++;
+            break;
+        case 1:
+            if(!UpdatePaletteFade())
+            {
+                SetMainCallback2(sub_8179288);
+                SetVBlankCallback(sub_8179454);
+            }
+            break;
+    }
+}
+
+void sub_8179288(void)
+{
+    u8 wipeTries = 0;
+
+    gUnknown_0203BCFE.unk0 = TRUE;
+
+    while (gDamagedSaveSectors != 0 && wipeTries < 3)
+    {
+        if (sub_81795AC(gDamagedSaveSectors) != FALSE)
+        {
+            FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+            sub_8178F44(gText_BackupMemoryDamaged, 1, 0);
+            SetMainCallback2(sub_8179390);
+            return;
+        }
+
+        FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+        sub_8178F44(gText_CheckCompleted, 1, 0);
+        HandleSavingData(gUnknown_0203BCFC);
+
+        if(gDamagedSaveSectors != 0)
+        {
+            FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+            sub_8178F44(gText_SaveFailedCheckingBackup, 1, 0);
+        }
+
+        wipeTries++;
+    }
+
+    if(wipeTries == 3)
+    {
+        FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+        sub_8178F44(gText_BackupMemoryDamaged, 1, 0);
+    }
+    else
+    {
+        FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+
+        if(gGameContinueCallback == NULL)
+            sub_8178F44(gText_SaveCompleteGameCannotContinue, 1, 0);
+        else
+            sub_8178F44(gText_SaveCompletePressA, 1, 0);
+    }
+
+    SetMainCallback2(sub_81793E0);
+}
+
+void sub_8179390(void)
+{
+    gUnknown_0203BCFE.unk0 = FALSE;
+
+    if(gMain.newKeys & A_BUTTON)
+    {
+        FillWindowPixelBuffer(gUnknown_0203BD0E.unk0, 0x11);
+        sub_8178F44(gText_GamePlayCannotBeContinued, 1, 0);
+        SetVBlankCallback(sub_8178FC8);
+        SetMainCallback2(sub_81793E0);
+    }
+}
+
+void sub_81793E0(void)
+{
+    gUnknown_0203BCFE.unk0 = FALSE;
+
+    if(gMain.newKeys & A_BUTTON)
+    {
+        BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0);
+        SetVBlankCallback(sub_8178FC8);
+        SetMainCallback2(sub_8179428);
+    }
+}
+
+void sub_8179428(void)
+{
+    if(!UpdatePaletteFade())
+    {
+        if(gGameContinueCallback == NULL) // no callback exists, so do a soft reset.
+        {
+            DoSoftReset();
+        }
+        else
+        {
+            SetMainCallback2((MainCallback)gGameContinueCallback);
+            gGameContinueCallback = NULL;
+        }
+    }
+}
+
+void sub_8179454(void)
+{
+    unsigned int n = (gMain.vblankCounter2 >> 3) & 7;
+
+    gMain.oamBuffer[0] = gUnknown_085EFD80;
+    gMain.oamBuffer[0].x = 112;
+    gMain.oamBuffer[0].y = (CLOCK_WIN_TOP + 1) * 8;;
+
+    if(gUnknown_0203BCFE.unk0 != FALSE)
+    {
+        gMain.oamBuffer[0].tileNum = gUnknown_085EFDAC[n][0];
+        gMain.oamBuffer[0].matrixNum = (gUnknown_085EFDAC[n][2] << 4) | (gUnknown_085EFDAC[n][1] << 3);
+    }
+    else
+    {
+        gMain.oamBuffer[0].tileNum = 1;
+    }
+
+    CpuFastCopy(gMain.oamBuffer, (void *)OAM, 4);
+
+    if(gUnknown_0203BCFE.unk2)
+        gUnknown_0203BCFE.unk2--;
+}
+
+bool8 sub_8179514(u16 sector)
+{
+    u32 *ptr = (u32 *)&gSaveDataBuffer;
+    u16 i;
+
+    ReadFlash(sector, 0, (u8 *)ptr, 4096);
+
+    for (i = 0; i < 0x400; i++, ptr++)
+        if (*ptr)
+            return TRUE;
+
+    return FALSE;
+}
+
+bool8 sub_8179554(u16 sector)
+{
+    u16 i, j;
+    bool8 failed = TRUE;
+
+    for (i = 0; failed && i < 130; i++)
+    {
+        for (j = 0; j < 0x1000; j++)
+            ProgramFlashByte(sector, j, 0);
+
+        failed = sub_8179514(sector);
+    }
+
+    return failed;
+}
+
+bool8 sub_81795AC(u32 sectorBits)
+{
+    u16 i;
+
+    for (i = 0; i < 0x20; i++)
+        if ((sectorBits & (1 << i)) && !sub_8179554(i))
+            sectorBits &= ~(1 << i);
+
+    if (sectorBits == 0)
+        return FALSE;
+    else
+        return TRUE;
+}