From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 2 Dec 2020 18:23:26 -0800
Subject: [PATCH] Add cause to Weather/ThunderChangeEvents


diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 044aa3df0c26b7a64eefcacf0b6b5c2d9224938c..f28aefd9192b26f39e71826fa87cca60a799be39 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -476,8 +476,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
         this.serverLevelData.setClearWeatherTime(clearDuration);
         this.serverLevelData.setRainTime(rainDuration);
         this.serverLevelData.setThunderTime(rainDuration);
-        this.serverLevelData.setRaining(raining);
-        this.serverLevelData.setThundering(thundering);
+        this.serverLevelData.setRaining(raining, org.bukkit.event.weather.WeatherChangeEvent.Cause.COMMAND); // Paper
+        this.serverLevelData.setThundering(thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause.COMMAND); // Paper
     }
 
     @Override
@@ -540,8 +540,8 @@ public class ServerLevel extends Level implements WorldGenLevel {
                 this.serverLevelData.setThunderTime(j);
                 this.serverLevelData.setRainTime(k);
                 this.serverLevelData.setClearWeatherTime(i);
-                this.serverLevelData.setThundering(flag1);
-                this.serverLevelData.setRaining(flag2);
+                this.serverLevelData.setThundering(flag1, org.bukkit.event.weather.ThunderChangeEvent.Cause.NATURAL); // Paper
+                this.serverLevelData.setRaining(flag2, org.bukkit.event.weather.WeatherChangeEvent.Cause.NATURAL); // Paper
             }
 
             this.oThunderLevel = this.thunderLevel;
@@ -921,14 +921,14 @@ public class ServerLevel extends Level implements WorldGenLevel {
 
     private void stopWeather() {
         // CraftBukkit start
-        this.serverLevelData.setRaining(false);
+        this.serverLevelData.setRaining(false, org.bukkit.event.weather.WeatherChangeEvent.Cause.SLEEP); // Paper - when passing the night
         // If we stop due to everyone sleeping we should reset the weather duration to some other random value.
         // Not that everyone ever manages to get the whole server to sleep at the same time....
         if (!this.serverLevelData.isRaining()) {
             this.serverLevelData.setRainTime(0);
         }
         // CraftBukkit end
-        this.serverLevelData.setThundering(false);
+        this.serverLevelData.setThundering(false, org.bukkit.event.weather.ThunderChangeEvent.Cause.SLEEP); // Paper - when passing the night
         // CraftBukkit start
         // If we stop due to everyone sleeping we should reset the weather duration to some other random value.
         // Not that everyone ever manages to get the whole server to sleep at the same time....
diff --git a/src/main/java/net/minecraft/world/level/storage/PrimaryLevelData.java b/src/main/java/net/minecraft/world/level/storage/PrimaryLevelData.java
index cd840dc4a8ca432868fb3e9c912ea928e5303e0d..4d0af984490b556a9911c3b8fdca1e168e6fe932 100644
--- a/src/main/java/net/minecraft/world/level/storage/PrimaryLevelData.java
+++ b/src/main/java/net/minecraft/world/level/storage/PrimaryLevelData.java
@@ -330,21 +330,26 @@ public class PrimaryLevelData implements ServerLevelData, WorldData {
 
     @Override
     public void setThundering(boolean thundering) {
+        // Paper start
+        this.setThundering(thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause.UNKNOWN);
+    }
+    public void setThundering(boolean flag, org.bukkit.event.weather.ThunderChangeEvent.Cause cause) {
+        // Paper end
         // CraftBukkit start
-        if (this.thundering == thundering) {
+        if (this.thundering == flag) {
             return;
         }
 
         org.bukkit.World world = Bukkit.getWorld(this.getLevelName());
         if (world != null) {
-            ThunderChangeEvent thunder = new ThunderChangeEvent(world, thundering);
+            ThunderChangeEvent thunder = new ThunderChangeEvent(world, flag, cause); // Paper
             Bukkit.getServer().getPluginManager().callEvent(thunder);
             if (thunder.isCancelled()) {
                 return;
             }
         }
         // CraftBukkit end
-        this.thundering = thundering;
+        this.thundering = flag;
     }
 
     @Override
@@ -364,6 +369,12 @@ public class PrimaryLevelData implements ServerLevelData, WorldData {
 
     @Override
     public void setRaining(boolean raining) {
+        // Paper start
+        this.setRaining(raining, org.bukkit.event.weather.WeatherChangeEvent.Cause.UNKNOWN);
+    }
+
+    public void setRaining(boolean raining, org.bukkit.event.weather.WeatherChangeEvent.Cause cause) {
+        // Paper end
         // CraftBukkit start
         if (this.raining == raining) {
             return;
@@ -371,7 +382,7 @@ public class PrimaryLevelData implements ServerLevelData, WorldData {
 
         org.bukkit.World world = Bukkit.getWorld(this.getLevelName());
         if (world != null) {
-            WeatherChangeEvent weather = new WeatherChangeEvent(world, raining);
+            WeatherChangeEvent weather = new WeatherChangeEvent(world, raining, cause); // Paper
             Bukkit.getServer().getPluginManager().callEvent(weather);
             if (weather.isCancelled()) {
                 return;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index d79aec050701b43e029606ee181c9ac5236a08c6..b91a4968540d2dca4702582eb231b925bd6709e1 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1168,7 +1168,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
 
     @Override
     public void setStorm(boolean hasStorm) {
-        world.levelData.setRaining(hasStorm);
+        world.serverLevelData.setRaining(hasStorm, org.bukkit.event.weather.WeatherChangeEvent.Cause.PLUGIN); // Paper
         this.setWeatherDuration(0); // Reset weather duration (legacy behaviour)
         this.setClearWeatherDuration(0); // Reset clear weather duration (reset "/weather clear" commands)
     }
@@ -1190,7 +1190,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
 
     @Override
     public void setThundering(boolean thundering) {
-        world.serverLevelData.setThundering(thundering);
+        world.serverLevelData.setThundering(thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause.PLUGIN); // Paper
         this.setThunderDuration(0); // Reset weather duration (legacy behaviour)
         this.setClearWeatherDuration(0); // Reset clear weather duration (reset "/weather clear" commands)
     }