Get Rid of Battery Run Dry Error Message

By devolov

Goal: Make battery run dry message not appear when starting the game.

In main_menu.c:

static void Task_MainMenuCheckBattery(u8 taskId)
{
    if (!gPaletteFade.active)
    {
        SetGpuReg(REG_OFFSET_WIN0H, 0);
        SetGpuReg(REG_OFFSET_WIN0V, 0);
        SetGpuReg(REG_OFFSET_WININ, WININ_WIN0_BG0 | WININ_WIN0_OBJ);
        SetGpuReg(REG_OFFSET_WINOUT, WINOUT_WIN01_BG0 | WINOUT_WIN01_OBJ | WINOUT_WIN01_CLR);
        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_DARKEN | BLDCNT_TGT1_BG0);
        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
        SetGpuReg(REG_OFFSET_BLDY, 7);
+       gTasks[taskId].func = Task_DisplayMainMenu;
-       if (!(RtcGetErrorStatus() & RTC_ERR_FLAG_MASK))
-       {
-           gTasks[taskId].func = Task_DisplayMainMenu;
-       }
-       else
-       {
-           gTasks[taskId].func = Task_WaitForBatteryDryErrorWindow;
-       }
    }
}

Extra: Update Daily Events and Berries Still Grow When Playing without a RTC

Goal: Make it so we grow the berries and update daily events by a set amountevery time we load the game if there is an RTC failure.

In clock.c add the folowing function at the bottom.:

void FastForwardTime(s16 daysToUpdateDay, s16 hoursToGrowBerries){
// Runs the UpdatePerDay function as if daysToUpdateDay days have passed and grows the berries by hoursToGrowBerries
        s16 daysBerry = hoursToGrowBerries / 24;
        s8 hoursBerry = hoursToGrowBerries % 24;
        struct Time localTimeOffset;
        localTimeOffset.days = *GetVarPointer(VAR_DAYS) + daysToUpdateDay;
        UpdatePerDay(&localTimeOffset);
        localTimeOffset = gSaveBlock2Ptr->lastBerryTreeUpdate;
        localTimeOffset.days += daysBerry;
        localTimeOffset.hours += hoursBerry;
        UpdatePerMinute(&localTimeOffset);
}

In clock.h:

void DoTimeBasedEvents(void);
+void FastForwardTime(s16, s16);

Finally, back in main_menu.c:

static void Task_MainMenuCheckBattery(u8 taskId)
{
    if (!gPaletteFade.active)
    {
        SetGpuReg(REG_OFFSET_WIN0H, 0);
        SetGpuReg(REG_OFFSET_WIN0V, 0);
        SetGpuReg(REG_OFFSET_WININ, WININ_WIN0_BG0 | WININ_WIN0_OBJ);
        SetGpuReg(REG_OFFSET_WINOUT, WINOUT_WIN01_BG0 | WINOUT_WIN01_OBJ | WINOUT_WIN01_CLR);
        SetGpuReg(REG_OFFSET_BLDCNT, BLDCNT_EFFECT_DARKEN | BLDCNT_TGT1_BG0);
        SetGpuReg(REG_OFFSET_BLDALPHA, 0);
        SetGpuReg(REG_OFFSET_BLDY, 7);
+       if (RtcGetErrorStatus() & RTC_ERR_FLAG_MASK)
+           FastForwardTime(2, 4);
        gTasks[taskId].func = Task_DisplayMainMenu;
    }
}

In the example above, we'll grow the berries by 4 hours and update daily events as if 2 days have passed every time we load the game.