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 58c56636f324f1073bbb03d94f51cd69600a80c4..9a09946b6b178837c44daae894555000668aeb72 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -441,8 +441,8 @@ 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 - Add cause to Weather/ThunderChangeEvents
+        this.serverLevelData.setThundering(thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause.COMMAND); // Paper - Add cause to Weather/ThunderChangeEvents
     }
 
     @Override
@@ -875,8 +875,8 @@ 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 - Add cause to Weather/ThunderChangeEvents
+                this.serverLevelData.setRaining(flag2, org.bukkit.event.weather.WeatherChangeEvent.Cause.NATURAL); // Paper - Add cause to Weather/ThunderChangeEvents
             }
 
             this.oThunderLevel = this.thunderLevel;
@@ -943,14 +943,14 @@ public class ServerLevel extends Level implements WorldGenLevel {
     @VisibleForTesting
     public void resetWeatherCycle() {
         // CraftBukkit start
-        this.serverLevelData.setRaining(false);
+        this.serverLevelData.setRaining(false, org.bukkit.event.weather.WeatherChangeEvent.Cause.SLEEP); // Paper - Add cause to Weather/ThunderChangeEvents
         // 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 - Add cause to Weather/ThunderChangeEvents
         // 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 e50ad48658193f889d65d37c57b1e30ce46758b7..efd0bcfebb3b4f63018d4e20a6a89f79192898d1 100644
--- a/src/main/java/net/minecraft/world/level/storage/PrimaryLevelData.java
+++ b/src/main/java/net/minecraft/world/level/storage/PrimaryLevelData.java
@@ -337,6 +337,11 @@ public class PrimaryLevelData implements ServerLevelData, WorldData {
 
     @Override
     public void setThundering(boolean thundering) {
+        // Paper start - Add cause to Weather/ThunderChangeEvents
+        this.setThundering(thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause.UNKNOWN);
+    }
+    public void setThundering(boolean thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause cause) {
+        // Paper end - Add cause to Weather/ThunderChangeEvents
         // CraftBukkit start
         if (this.thundering == thundering) {
             return;
@@ -344,7 +349,7 @@ public class PrimaryLevelData implements ServerLevelData, WorldData {
 
         org.bukkit.World world = Bukkit.getWorld(this.getLevelName());
         if (world != null) {
-            ThunderChangeEvent thunder = new ThunderChangeEvent(world, thundering);
+            ThunderChangeEvent thunder = new ThunderChangeEvent(world, thundering, cause); // Paper - Add cause to Weather/ThunderChangeEvents
             Bukkit.getServer().getPluginManager().callEvent(thunder);
             if (thunder.isCancelled()) {
                 return;
@@ -371,6 +376,12 @@ public class PrimaryLevelData implements ServerLevelData, WorldData {
 
     @Override
     public void setRaining(boolean raining) {
+        // Paper start - Add cause to Weather/ThunderChangeEvents
+        this.setRaining(raining, org.bukkit.event.weather.WeatherChangeEvent.Cause.UNKNOWN);
+    }
+
+    public void setRaining(boolean raining, org.bukkit.event.weather.WeatherChangeEvent.Cause cause) {
+        // Paper end - Add cause to Weather/ThunderChangeEvents
         // CraftBukkit start
         if (this.raining == raining) {
             return;
@@ -378,7 +389,7 @@ 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 - Add cause to Weather/ThunderChangeEvents
             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 ab8a2906ee2c5eb3d11001f421e76ddde1172d46..a27fb39dfada76b1d33364b2b3e92e4f5203074b 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1231,7 +1231,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
 
     @Override
     public void setStorm(boolean hasStorm) {
-        this.world.levelData.setRaining(hasStorm);
+        this.world.serverLevelData.setRaining(hasStorm, org.bukkit.event.weather.WeatherChangeEvent.Cause.PLUGIN); // Paper - Add cause to Weather/ThunderChangeEvents
         this.setWeatherDuration(0); // Reset weather duration (legacy behaviour)
         this.setClearWeatherDuration(0); // Reset clear weather duration (reset "/weather clear" commands)
     }
@@ -1253,7 +1253,7 @@ public class CraftWorld extends CraftRegionAccessor implements World {
 
     @Override
     public void setThundering(boolean thundering) {
-        this.world.serverLevelData.setThundering(thundering);
+        this.world.serverLevelData.setThundering(thundering, org.bukkit.event.weather.ThunderChangeEvent.Cause.PLUGIN); // Paper - Add cause to Weather/ThunderChangeEvents
         this.setThunderDuration(0); // Reset weather duration (legacy behaviour)
         this.setClearWeatherDuration(0); // Reset clear weather duration (reset "/weather clear" commands)
     }