damage effect

src/main/java/me/night/nullvalkyrie/Main.java

@@ -4,6 +4,8 @@ import me.night.nullvalkyrie.chests.MenuListener;
 import me.night.nullvalkyrie.discord.DiscordClientManager;
 import me.night.nullvalkyrie.enchantments.EnchantmentManager;
 import me.night.nullvalkyrie.events.CustomItemEvents;
+//import me.night.nullvalkyrie.hardpoint.GameEvent;
+import me.night.nullvalkyrie.events.DamageEffect;
 import me.night.nullvalkyrie.items.CustomItemManager;
 import me.night.nullvalkyrie.rank.ScoreboardListener;
 import me.night.nullvalkyrie.util.Util;
@@ -41,7 +43,8 @@ public final class Main extends JavaPlugin implements Listener {
         Bukkit.getPluginManager().registerEvents(new MenuListener(), this);
         Bukkit.getPluginManager().registerEvents(new ScoreboardListener(this), this);
         Bukkit.getPluginManager().registerEvents(new CustomItemEvents(this), this);
-        Bukkit.getPluginManager().registerEvents(new SpawnCommand(this), this);
+        Bukkit.getPluginManager().registerEvents(new DamageEffect(this), this);
+        //Bukkit.getPluginManager().registerEvents(new GameEvent(this), this);
         EnchantmentManager.register();
         new DiscordClientManager();
         customItemManager = new CustomItemManager(this);
@@ -49,7 +52,6 @@ public final class Main extends JavaPlugin implements Listener {
         new Client();
     }
 
-
     @EventHandler
     public void onJoin(PlayerJoinEvent e) {
         e.getPlayer().spigot().sendMessage(ChatMessageType.ACTION_BAR, TextComponent.fromLegacyText("§1NOT ENOUGH MANNER"));
@@ -69,13 +71,4 @@ public final class Main extends JavaPlugin implements Listener {
         }
 
     }
-
-
-//    For hologram clicks to change page
-//    @EventHandler
-//    public void onEntityInteract(EntityInteractEvent e) {
-//        System.out.println(e.getEntity().getLocation());
-//        e.getEntity().setCustomName(ChatColor.RED + "Changed name since you ust clicked lol");
-//    }
-
 }

src/main/java/me/night/nullvalkyrie/commands/AnvilCommand.java

@@ -1,14 +1,17 @@
 package me.night.nullvalkyrie.commands;
 
 
-//import net.minecraft.network.protocol.game.PacketPlayOutOpenWindow;
+import net.minecraft.network.protocol.game.PacketPlayOutOpenWindow;
-//import net.minecraft.server.level.EntityPlayer;
+import net.minecraft.server.level.EntityPlayer;
-//import net.minecraft.server.network.PlayerConnection;
+import net.minecraft.server.network.PlayerConnection;
-//import net.minecraft.world.inventory.Containers;
+import net.minecraft.world.inventory.Containers;
+
 import org.bukkit.command.CommandSender;
 //import org.bukkit.craftbukkit.v1_18_R1.entity.CraftHumanEntity;
 //import org.bukkit.craftbukkit.v1_18_R1.entity.CraftPlayer;
 //import org.bukkit.craftbukkit.v1_18_R1.util.CraftChatMessage;
+import org.bukkit.craftbukkit.v1_19_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_19_R1.util.CraftChatMessage;
 import org.bukkit.entity.Player;
 
 import java.util.List;
@@ -27,13 +30,13 @@ public class AnvilCommand extends Command {
     @Override
     public void onCommand(CommandSender sender, String[] args) {
         if (sender instanceof Player) {
-//            Player player = (Player) sender;
+            Player player = (Player) sender;
-//            CraftPlayer craftPlayer = (CraftPlayer) player;
+            CraftPlayer craftPlayer = (CraftPlayer) player;
-//            EntityPlayer entityPlayer = craftPlayer.getHandle();
+            EntityPlayer entityPlayer = craftPlayer.getHandle();
-//            int id = 0;
+            int id = 0;
-//            PacketPlayOutOpenWindow OpenWindow = new PacketPlayOutOpenWindow(id, Containers.h, CraftChatMessage.fromStringOrNull("Test"));
+            PacketPlayOutOpenWindow OpenWindow = new PacketPlayOutOpenWindow(id, Containers.h, CraftChatMessage.fromStringOrNull("Test"));
-//            PlayerConnection playerConnection = entityPlayer.b;
+            PlayerConnection playerConnection = entityPlayer.b;
-//            playerConnection.a(OpenWindow);
+            playerConnection.a(OpenWindow);
         }
     }
 

src/main/java/me/night/nullvalkyrie/events/DamageEffect.java

@@ -0,0 +1,111 @@
+package me.night.nullvalkyrie.events;
+
+import me.night.nullvalkyrie.Main;
+import me.night.nullvalkyrie.util.Util;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.World;
+import org.bukkit.block.Block;
+import org.bukkit.entity.ArmorStand;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Zombie;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import java.text.DecimalFormat;
+import java.util.*;
+
+public class DamageEffect implements Listener {
+    private final Main main;
+
+    public DamageEffect(Main main) {
+        this.main = main;
+    }
+
+    public World world = Bukkit.getWorld("world");
+    public final Map<Entity, Integer> indicators = new HashMap<>();
+    private final DecimalFormat formatter = new DecimalFormat("#");
+
+    @EventHandler
+    public void onDamage(EntityDamageByEntityEvent e) {
+        double damage = e.getFinalDamage();
+        if (e.getEntity() instanceof Zombie) {
+            Location loc = e.getEntity().getLocation().clone().add(getRandomOffset(), 1, getRandomOffset());
+            world.spawn(loc, ArmorStand.class, armorStand -> {
+                armorStand.setMarker(true);
+                armorStand.setVisible(false);
+                armorStand.setGravity(false);
+                armorStand.setSmall(true);
+                armorStand.setCustomNameVisible(true);
+                armorStand.setCustomName(Util.color("&c&l" + formatter.format(damage)));
+                indicators.put(armorStand, 30);
+            });
+            removeStands();
+        }
+    }
+
+    public void removeStands() {
+        new BukkitRunnable() {
+            final Set<Entity> stands = indicators.keySet();
+            final List<Entity> removal = new ArrayList<>();
+
+            @Override
+            public void run() {
+                for (Entity stand : stands) {
+                    int ticksLeft = indicators.get(stand);
+                    if (ticksLeft == 0) {
+                        stand.remove();
+                        removal.add(stand);
+                        continue;
+                    }
+                    ticksLeft--;
+                    indicators.put(stand, ticksLeft);
+                }
+                stands.removeAll(removal);
+            }
+        }.runTaskTimer(main, 0L, 1L);
+    }
+
+    public static boolean isSpawnable(Location loc) {
+        Block feetBlock = loc.getBlock(), headBlock = loc.clone().add(0, 1, 0).getBlock(), upperBlock = loc.clone().add(0, 2, 0).getBlock();
+        return feetBlock.isPassable() && !feetBlock.isLiquid() && headBlock.isPassable() && !headBlock.isLiquid() && upperBlock.isPassable() && !upperBlock.isLiquid();
+    }
+
+    private static double getRandomOffset() {
+        double random = Math.random();
+        if (Math.random() > 0.5) random *= -1;
+        return random;
+    }
+
+    public static int getRandomWithNeg(int size) {
+        int random = (int) (Math.random() * (size + 1));
+        if (Math.random() > 0.5) random *= -1;
+        return random;
+    }
+
+    public Location generateRandomCoord(int size, World world) {
+        int ranX = getRandomWithNeg(size), ranZ = getRandomWithNeg(size);
+        Block block = world.getHighestBlockAt(ranX, ranZ);
+        return block.getLocation();
+    }
+
+    public Location generateRandomCoordIsSpawnable(int size) {
+        while (true) {
+            Location coord = generateRandomCoord(size, world);
+            boolean spawnable = isSpawnable(coord);
+            if (spawnable) {
+                return coord;
+            }
+        }
+    }
+}
+//
+//    @EventHandler
+//    public void onEntityDeath(EntityDeathEvent event) {
+//        if (!entities.containsKey(event.getEntity())) return;
+//        event.setDroppedExp(0);
+//        event.getDrops().clear();
+//        entities.remove(event.getEntity()).tryDropLoot(event.getEntity().getLocation());
+//    }