From dfb67704537e9ec2497d65f2a11f7f6f1b097865 Mon Sep 17 00:00:00 2001
From: jojo <yoyosource@nidido.de>
Date: Thu, 4 Feb 2021 09:55:39 +0100
Subject: [PATCH] Fix Freeze Exceptions

---
 .../bausystem/commands/CommandFreeze.java     | 10 ++++++++
 .../bausystem/world/RegionListener.java       | 23 +++++++++++++++----
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/BauSystem_Main/src/de/steamwar/bausystem/commands/CommandFreeze.java b/BauSystem_Main/src/de/steamwar/bausystem/commands/CommandFreeze.java
index 2364e98..5baa134 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/commands/CommandFreeze.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/commands/CommandFreeze.java
@@ -19,7 +19,10 @@
 
 package de.steamwar.bausystem.commands;
 
+import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.world.Region;
+import de.steamwar.core.Core;
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.block.*;
@@ -55,6 +58,7 @@ public class CommandFreeze extends RegionToggleCommand {
 
     @EventHandler
     public void onBlockCanBuild(BlockCanBuildEvent e) {
+        if (Core.getVersion() == 12) return;
         if (!e.isBuildable()) return;
         if (!Region.getRegion(e.getBlock().getLocation()).isFreeze()) return;
         if (e.getMaterial() == Material.TNT) {
@@ -66,6 +70,12 @@ public class CommandFreeze extends RegionToggleCommand {
     @EventHandler
     public void onEntityChangeBlock(EntityChangeBlockEvent e) {
         if (Region.getRegion(e.getBlock().getLocation()).isFreeze()) e.setCancelled(true);
+        if (Core.getVersion() == 15) return;
+        if (e.isCancelled()) {
+            Bukkit.getScheduler().runTaskLater(BauSystem.getPlugin(), () -> {
+                e.getBlock().setType(Material.TNT, false);
+            }, 1L);
+        }
     }
 
     @EventHandler
diff --git a/BauSystem_Main/src/de/steamwar/bausystem/world/RegionListener.java b/BauSystem_Main/src/de/steamwar/bausystem/world/RegionListener.java
index 47d49c0..ac6825e 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/world/RegionListener.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/world/RegionListener.java
@@ -38,10 +38,7 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
-import org.bukkit.event.block.Action;
-import org.bukkit.event.block.BlockBreakEvent;
-import org.bukkit.event.block.BlockCanBuildEvent;
-import org.bukkit.event.block.SignChangeEvent;
+import org.bukkit.event.block.*;
 import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 
@@ -72,8 +69,9 @@ public class RegionListener implements Listener {
 
     @EventHandler(priority = EventPriority.LOWEST)
     public void onBlockCanBuild(BlockCanBuildEvent e) {
-        Player p = e.getPlayer();
+        if (Core.getVersion() == 12) return;
 
+        Player p = e.getPlayer();
         try{
             if (Welt.noPermission(p, Permission.build)){
                 p.sendMessage(BauSystem.PREFIX + "§cDu darfst hier keine Blöcke platzieren");
@@ -84,6 +82,21 @@ public class RegionListener implements Listener {
         }
     }
 
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onBlockPlace(BlockPlaceEvent e) {
+        if (Core.getVersion() == 15) return;
+
+        Player p = e.getPlayer();
+        try{
+            if (Welt.noPermission(p, Permission.build)){
+                p.sendMessage(BauSystem.PREFIX + "§cDu darfst hier keine Blöcke platzieren");
+                e.setCancelled(true);
+            }
+        }catch(NullPointerException ex){
+            //ignored, caused by worldedit brushes
+        }
+    }
+
     private static final String[] shortcutCommands = {"//1", "//2", "//90", "//-90", "//180", "//p", "//c", "//flopy", "//floppy", "//flopyp", "//floppyp", "//u", "//r"};
 
     private boolean isWorldEditCommand(String command) {