1 files changed, 93 insertions, 0 deletions
diff --git a/src/clock.c b/src/clock.c
new file mode 100644
index 000000000..7cea30166
--- /dev/null
+++ b/src/clock.c
@@ -0,0 +1,93 @@
+#include "global.h"
+#include "rom6.h"
+#include "event_data.h"
+#include "rtc.h"
+#include "lottery_corner.h"
+#include "dewford_trend.h"
+#include "tv.h"
+#include "field_screen.h"
+#include "berry.h"
+#include "main.h"
+#include "overworld.h"
+#include "wallclock.h"
+
+// static types
+
+// static declarations
+
+static void UpdatePerDay(struct Time *localTime);
+static void UpdatePerMinute(struct Time *localTime);
+
+// rodata
+
+// text
+
+static void InitTimeBasedEvents(void)
+{
+    FlagSet(FLAG_SYS_CLOCK_SET);
+    RtcCalcLocalTime();
+    gSaveBlock2Ptr->lastBerryTreeUpdate = gLocalTime;
+    VarSet(VAR_DAYS, gLocalTime.days);
+}
+
+void DoTimeBasedEvents(void)
+{
+    if (FlagGet(FLAG_SYS_CLOCK_SET) && !sub_813B9C0())
+    {
+        RtcCalcLocalTime();
+        UpdatePerDay(&gLocalTime);
+        UpdatePerMinute(&gLocalTime);
+    }
+}
+
+static void UpdatePerDay(struct Time *localTime)
+{
+    u16 *days = GetVarPointer(VAR_DAYS);
+    u16 daysSince;
+
+    if (*days != localTime->days && *days <= localTime->days)
+    {
+        daysSince = localTime->days - *days;
+        ClearUpperFlags();
+        UpdateDewfordTrendPerDay(daysSince);
+        UpdateTVShowsPerDay(daysSince);
+        UpdateWeatherPerDay(daysSince);
+        UpdatePartyPokerusTime(daysSince);
+        UpdateMirageRnd(daysSince);
+        UpdateBirchState(daysSince);
+        UpdateFrontierManiac(daysSince);
+        UpdateFrontierGambler(daysSince);
+        SetShoalItemFlag(daysSince);
+        SetRandomLotteryNumber(daysSince);
+        *days = localTime->days;
+    }
+}
+
+static void UpdatePerMinute(struct Time *localTime)
+{
+    struct Time difference;
+    int minutes;
+
+    CalcTimeDifference(&difference, &gSaveBlock2Ptr->lastBerryTreeUpdate, localTime);
+    minutes = 24 * 60 * difference.days + 60 * difference.hours + difference.minutes;
+    if (minutes != 0)
+    {
+        if (minutes >= 0)
+        {
+            BerryTreeTimeUpdate(minutes);
+            gSaveBlock2Ptr->lastBerryTreeUpdate = *localTime;
+        }
+    }
+}
+
+static void ReturnFromStartWallClock(void)
+{
+    InitTimeBasedEvents();
+    SetMainCallback2(c2_exit_to_overworld_1_continue_scripts_restart_music);
+}
+
+void StartWallClock(void)
+{
+    SetMainCallback2(Cb2_StartWallClock);
+    gMain.savedCallback = ReturnFromStartWallClock;
+}