From d8f783999b76967e98f32c3cba3633d646d2b104 Mon Sep 17 00:00:00 2001
From: tastybento <tastybento@wasteofplastic.com>
Date: Tue, 17 Jul 2018 22:38:47 -0700
Subject: [PATCH] Added creeper listener. Fixed bugs with listener reg.

---
 .../listeners/flags/CreeperListener.java      | 57 +++++++++++++++++++
 .../us/tastybento/bskyblock/lists/Flags.java  |  9 ++-
 .../bskyblock/managers/FlagsManager.java      |  2 +-
 3 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/us/tastybento/bskyblock/listeners/flags/CreeperListener.java

diff --git a/src/main/java/us/tastybento/bskyblock/listeners/flags/CreeperListener.java b/src/main/java/us/tastybento/bskyblock/listeners/flags/CreeperListener.java
new file mode 100644
index 000000000..ecaa0e56a
--- /dev/null
+++ b/src/main/java/us/tastybento/bskyblock/listeners/flags/CreeperListener.java
@@ -0,0 +1,57 @@
+/**
+ *
+ */
+package us.tastybento.bskyblock.listeners.flags;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Creeper;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.entity.EntityExplodeEvent;
+
+import us.tastybento.bskyblock.api.flags.AbstractFlagListener;
+import us.tastybento.bskyblock.api.localization.TextVariables;
+import us.tastybento.bskyblock.api.user.User;
+import us.tastybento.bskyblock.lists.Flags;
+
+/**
+ * Listens for creepers hsssssssh!
+ * For the {@link us.tastybento.bskyblock.lists.Flags#CREEPER_DAMAGE}
+ * and {@link us.tastybento.bskyblock.lists.Flags#CREEPER_GRIEFING} flags.
+ * @author tastybento
+ *
+ */
+public class CreeperListener extends AbstractFlagListener {
+
+    /**
+     * Prevent damage from explosion
+     * @param e - event
+     */
+    @EventHandler(priority = EventPriority.LOW, ignoreCancelled = true)
+    public void onExplosion(final EntityExplodeEvent e) {
+        Bukkit.getLogger().info(e.getEventName());
+        if (e.getEntity() == null || !e.getEntityType().equals(EntityType.CREEPER)) {
+            return;
+        }
+        // If creeper damage is not allowed in world, remove it
+        if (!Flags.CREEPER_DAMAGE.isSetForWorld(e.getLocation().getWorld())) {
+            // If any were removed, then prevent damage too
+            e.blockList().clear();
+            e.setCancelled(true);
+            return;
+        }
+        // Check for griefing
+        Creeper creeper = (Creeper)e.getEntity();
+        if (!Flags.CREEPER_GRIEFING.isSetForWorld(e.getLocation().getWorld()) && creeper.getTarget() instanceof Player) {
+            Player target = (Player)creeper.getTarget();
+            if (!getIslands().locationIsOnIsland(target, e.getLocation())) {
+                User user = User.getInstance(target);
+                user.notify("protection.protected", TextVariables.DESCRIPTION, user.getTranslation(Flags.CREEPER_GRIEFING.getHintReference()));
+                e.setCancelled(true);
+                e.blockList().clear();
+            }
+        }
+    }
+}
diff --git a/src/main/java/us/tastybento/bskyblock/lists/Flags.java b/src/main/java/us/tastybento/bskyblock/lists/Flags.java
index 3c29f63ba..7e334035e 100644
--- a/src/main/java/us/tastybento/bskyblock/lists/Flags.java
+++ b/src/main/java/us/tastybento/bskyblock/lists/Flags.java
@@ -15,6 +15,7 @@ import us.tastybento.bskyblock.listeners.flags.BreakBlocksListener;
 import us.tastybento.bskyblock.listeners.flags.BreedingListener;
 import us.tastybento.bskyblock.listeners.flags.BucketListener;
 import us.tastybento.bskyblock.listeners.flags.CleanSuperFlatListener;
+import us.tastybento.bskyblock.listeners.flags.CreeperListener;
 import us.tastybento.bskyblock.listeners.flags.EggListener;
 import us.tastybento.bskyblock.listeners.flags.EnderChestListener;
 import us.tastybento.bskyblock.listeners.flags.EnterExitListener;
@@ -191,10 +192,16 @@ public class Flags {
 
     public static final Flag CHEST_DAMAGE = new FlagBuilder().id("CHEST_DAMAGE").icon(Material.TRAPPED_CHEST).type(Type.WORLD_SETTING)
             .allowedByDefault(false).build();
-    public static final Flag CREEPER_DAMAGE = new FlagBuilder().id("CREEPER_DAMAGE").icon(Material.GREEN_SHULKER_BOX).type(Type.WORLD_SETTING)
+    public static final Flag CREEPER_DAMAGE = new FlagBuilder().id("CREEPER_DAMAGE").listener(new CreeperListener()).icon(Material.GREEN_SHULKER_BOX).type(Type.WORLD_SETTING)
             .allowedByDefault(true).build();
+    /**
+     * Prevents creeper griefing. This is where a visitor will trigger a creeper to blow up an island.
+     */
     public static final Flag CREEPER_GRIEFING = new FlagBuilder().id("CREEPER_GRIEFING").icon(Material.FIREWORK).type(Type.WORLD_SETTING)
             .allowedByDefault(false).build();
+    /**
+     * Globally allows or disallows TNT explosion damage/pain.
+     */
     public static final Flag TNT = new FlagBuilder().id("TNT").icon(Material.TNT).listener(new TNTListener()).allowedByDefault(false).type(Type.WORLD_SETTING).build();
 
 
diff --git a/src/main/java/us/tastybento/bskyblock/managers/FlagsManager.java b/src/main/java/us/tastybento/bskyblock/managers/FlagsManager.java
index 37a3cd88d..f7ad11d88 100644
--- a/src/main/java/us/tastybento/bskyblock/managers/FlagsManager.java
+++ b/src/main/java/us/tastybento/bskyblock/managers/FlagsManager.java
@@ -56,7 +56,7 @@ public class FlagsManager {
      * Register any unregistered listeners - called after the plugin is fully loaded
      */
     public void registerListeners() {
-        registeredListeners.entrySet().stream().filter(Map.Entry::getValue).map(Map.Entry::getKey).forEach(this::registerListener);
+        registeredListeners.entrySet().stream().filter(e -> !e.getValue()).map(Map.Entry::getKey).forEach(this::registerListener);
     }
 
     /**