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Leaf/leaf-server/minecraft-patches/features/0010-Predict-Halloween.patch
2025-03-28 05:02:44 -04:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Wed, 23 Nov 2022 16:29:01 +0100
Subject: [PATCH] Predict Halloween
License: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
Gale - https://galemc.org
diff --git a/net/minecraft/world/entity/ambient/Bat.java b/net/minecraft/world/entity/ambient/Bat.java
index eb9fb57440f498079182030a46034008d3f6b5e8..65a9ea8d4a208f447b5e78b58b10a0917e35e4f2 100644
--- a/net/minecraft/world/entity/ambient/Bat.java
+++ b/net/minecraft/world/entity/ambient/Bat.java
@@ -244,11 +244,66 @@ public class Bat extends AmbientCreature {
}
}
+ // Gale start - predict Halloween
+ /**
+ * The 1-indexed month of the year that Halloween starts (inclusive).
+ */
+ private static final int halloweenStartMonthOfYear = 10;
+
+ /**
+ * The 1-indexed day of the month that Halloween starts (inclusive).
+ */
+ private static final int halloweenStartDayOfMonth = 20;
+
+ /**
+ * The 1-indexed month of the year that Halloween ends (exclusive).
+ */
+ private static final int halloweenEndMonthOfYear = 11;
+
+ /**
+ * The 1-indexed day of the month that Halloween ends (exclusive).
+ */
+ private static final int halloweenEndDayOfMonth = 4;
+
+ /**
+ * The next start of Halloween, given as milliseconds since the Unix epoch.
+ * Will be 0 while not computed yet.
+ */
+ private static long nextHalloweenStart = 0;
+
+ /**
+ * The next end of Halloween, given as milliseconds since the Unix epoch.
+ * Will be 0 while not computed yet.
+ */
+ private static long nextHalloweenEnd = 0;
+
+ // The Halloween begins at 10/20 0:00, and end with 11/04 0:00
+ // Only when the current Halloween period ends, the `nextHalloweenStart`
+ // and `nextHalloweenEnd` will adjust to the epoch ms of date of next year
+ // These two fields will not change during current Halloween period.
private static boolean isHalloween() {
- LocalDate localDate = LocalDate.now();
- int i = localDate.get(ChronoField.DAY_OF_MONTH);
- int i1 = localDate.get(ChronoField.MONTH_OF_YEAR);
- return i1 == 10 && i >= 20 || i1 == 11 && i <= 3;
+ long currentEpochMillis = System.currentTimeMillis();
+
+ if (currentEpochMillis > nextHalloweenEnd) {
+ // Update prediction
+
+ java.time.OffsetDateTime currentDate = java.time.OffsetDateTime.now();
+ int currentMonthOfYear = currentDate.getMonth().getValue();
+ int currentDayOfMonth = currentDate.getDayOfMonth();
+
+ java.time.OffsetDateTime nextHalloweenStartDate = currentDate.withMonth(halloweenStartMonthOfYear).withDayOfMonth(halloweenStartDayOfMonth)
+ .withHour(0).withMinute(0).withSecond(0).withNano(0); // Adjust to directly start or end at zero o'clock
+
+ if (currentMonthOfYear >= halloweenEndMonthOfYear && currentDayOfMonth >= halloweenEndDayOfMonth) {
+ nextHalloweenStartDate = nextHalloweenStartDate.plusYears(1);
+ }
+
+ nextHalloweenStart = nextHalloweenStartDate.toInstant().toEpochMilli();
+ nextHalloweenEnd = nextHalloweenStartDate.withMonth(halloweenEndMonthOfYear).withDayOfMonth(halloweenEndDayOfMonth).toInstant().toEpochMilli();
+ }
+
+ return currentEpochMillis >= nextHalloweenStart;
+ // Gale end - predict Halloween
}
private void setupAnimationStates() {