Add moisture-change flag (#1879) (#2096)

* Create and implement moisture-change flag

* Fix imports

* Add comment

* Actually read the value from config.

Closes #1879 

---------

Co-authored-by: wizjany <wizjany@gmail.com>

Author: ploppyperson

worldguard-bukkit/src/main/java/com/sk89q/worldguard/bukkit/BukkitWorldConfiguration.java

@@ -283,6 +283,7 @@ public void loadConfiguration() {
         disableSculkGrowth = getBoolean("dynamics.disable-sculk-growth", false);
         disableCropGrowth = getBoolean("dynamics.disable-crop-growth", false);
         disableSoilDehydration = getBoolean("dynamics.disable-soil-dehydration", false);
+        disableSoilMoistureChange = getBoolean("dynamics.disable-soil-moisture-change", false);
         disableCoralBlockFade = getBoolean("dynamics.disable-coral-block-fade", false);
         disableCopperBlockFade = getBoolean("dynamics.disable-copper-block-fade", false);
         allowedSnowFallOver = new HashSet<>(convertLegacyBlocks(getStringList("dynamics.snow-fall-blocks", null)));

worldguard-bukkit/src/main/java/com/sk89q/worldguard/bukkit/listener/WorldGuardBlockListener.java

@@ -56,6 +56,7 @@
 import org.bukkit.event.block.BlockSpreadEvent;
 import org.bukkit.event.block.EntityBlockFormEvent;
 import org.bukkit.event.block.LeavesDecayEvent;
+import org.bukkit.event.block.MoistureChangeEvent;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.Damageable;
 import org.bukkit.inventory.meta.ItemMeta;
@@ -726,4 +727,24 @@ public void onBlockExplode(BlockExplodeEvent event) {
         }
     }
 
+    /**
+     * Called when the moisture level of a block changes
+     */
+    @EventHandler(ignoreCancelled = true)
+    public void onMoistureChange(MoistureChangeEvent event) {
+        WorldConfiguration wcfg = getWorldConfig(event.getBlock().getWorld());
+
+        if (wcfg.disableSoilMoistureChange) {
+            event.setCancelled(true);
+            return;
+        }
+
+        if (wcfg.useRegions) {
+            if (!StateFlag.test(WorldGuard.getInstance().getPlatform().getRegionContainer().createQuery()
+                    .queryState(BukkitAdapter.adapt(event.getBlock().getLocation()), (RegionAssociable) null, Flags.MOISTURE_CHANGE))) {
+                event.setCancelled(true);
+            }
+        }
+    }
+
 }

worldguard-core/src/main/java/com/sk89q/worldguard/config/WorldConfiguration.java

@@ -167,6 +167,7 @@ public abstract class WorldConfiguration {
     public boolean disableEndermanGriefing;
     public boolean disableSnowmanTrails;
     public boolean disableSoilDehydration;
+    public boolean disableSoilMoistureChange;
     public boolean disableCoralBlockFade;
     public boolean disableCopperBlockFade;
     public Set<String> allowedSnowFallOver;

worldguard-core/src/main/java/com/sk89q/worldguard/protection/flags/Flags.java

@@ -130,6 +130,7 @@ public final class Flags {
     public static final StateFlag COPPER_FADE = register(new StateFlag("copper-fade", true));
     public static final StateFlag WATER_FLOW = register(new StateFlag("water-flow", true));
     public static final StateFlag LAVA_FLOW = register(new StateFlag("lava-flow", true));
+    public static final StateFlag MOISTURE_CHANGE = register(new StateFlag("moisture-change", true));
 
     public static final RegistryFlag<WeatherType> WEATHER_LOCK = register(new RegistryFlag<>("weather-lock", WeatherType.REGISTRY));
     public static final StringFlag TIME_LOCK = register(new StringFlag("time-lock"));