document berry.c.

1 files changed, 8 insertions, 9 deletions

diff --git a/src/engine/clock.c b/src/engine/clock.c
index 9635514d2..12b82018d 100644
--- a/src/engine/clock.c
+++ b/src/engine/clock.c
@@ -61,19 +61,18 @@ static void UpdatePerDay(struct Time *time)
 static void UpdatePerMinute(struct Time *time)
 {
     struct Time newTime;
-    s32 minutes;
+    s32 totalMinutes;
 
     CalcTimeDifference(&newTime, &gSaveBlock2.lastBerryTreeUpdate, time);
-    minutes = 1440 * newTime.days + 60 * newTime.hours + newTime.minutes;
+    totalMinutes = 1440 * newTime.days + 60 * newTime.hours + newTime.minutes;
 
-    // there's no way to get the correct assembly other than with this nested if check. so dumb.
-    if (minutes != 0)
+    if (totalMinutes == 0) // do not do the update for the first minute.
+        return;
+
+    if (totalMinutes > -1) // do not perform an update on invalid totalMinutes.
     {
-        if (minutes >= 0)
-        {
-            BerryTreeTimeUpdate(minutes);
-            gSaveBlock2.lastBerryTreeUpdate = *time;
-        }
+        BerryTreeTimeUpdate(totalMinutes);
+        gSaveBlock2.lastBerryTreeUpdate = *time;
     }
 }