Properly lookup random-ticked precipitation blocks (#7606)

Author: lynxplay

patches/server/0764-Optimise-random-block-ticking.patch

@@ -71,7 +71,7 @@ index 0000000000000000000000000000000000000000..e8b4053babe46999980b926431254050
 +    }
 +}
 diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
-index 9fa7a01db61ba91b79eda4f7e4fd4f0001712808..6dee3e414e378538e6b5ef93dc1414e0128cffbb 100644
+index 8f27ef86cac71e0a0002093f4eded83f8891876f..6b90582dd0aefccab7e1b5a1718f96854d1cdd81 100644
 --- a/src/main/java/net/minecraft/server/level/ServerLevel.java
 +++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
 @@ -645,6 +645,10 @@ public class ServerLevel extends Level implements WorldGenLevel {
@@ -126,13 +126,13 @@ index 9fa7a01db61ba91b79eda4f7e4fd4f0001712808..6dee3e414e378538e6b5ef93dc1414e0
                  if (biomebase.shouldSnow(this, blockposition)) {
                      org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(this, blockposition, Blocks.SNOW.defaultBlockState(), null); // CraftBukkit
                  }
++                blockposition.setY(downY); // Paper
 
 -                BlockState iblockdata = this.getBlockState(blockposition1);
 +                BlockState iblockdata = this.getBlockState(blockposition); // Paper
                  Biome.Precipitation biomebase_precipitation = biomebase.getPrecipitation();
 
 -                if (biomebase_precipitation == Biome.Precipitation.RAIN && biomebase.coldEnoughToSnow(blockposition1)) {
-+                blockposition.setY(downY); // Paper
 +                if (biomebase_precipitation == Biome.Precipitation.RAIN && biomebase.coldEnoughToSnow(blockposition)) { // Paper
                      biomebase_precipitation = Biome.Precipitation.SNOW;
                  }