initial commit

src/main/java/net/babamod/mineclass/Mineclass.java

@@ -0,0 +1,29 @@
+package net.babamod.mineclass;
+
+import net.babamod.mineclass.commands.CommandClass;
+import net.babamod.mineclass.utils.AppliedStatus;
+import net.babamod.mineclass.utils.MineClassListeners;
+import org.bukkit.command.PluginCommand;
+import org.bukkit.event.Listener;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.util.Arrays;
+
+public final class Mineclass extends JavaPlugin implements Listener {
+
+    @Override
+    public void onEnable() {
+        AppliedStatus.getInstance();
+        new MineClassListeners(this);
+        PluginCommand pluginCommand = this.getCommand("class");
+        if (pluginCommand != null) {
+            pluginCommand.setTabCompleter((sender, command, alias, args) -> Arrays.asList("dwarf", "elf", "fire_dwarf", "naga", "clear", "whoami"));
+            pluginCommand.setExecutor(new CommandClass());
+        }
+    }
+
+    @Override
+    public void onDisable() {
+        // Plugin shutdown logic
+    }
+}

src/main/java/net/babamod/mineclass/classes/ClassWrapper.java

@@ -0,0 +1,64 @@
+package net.babamod.mineclass.classes;
+
+import net.babamod.mineclass.utils.AppliedStatus;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+
+public class ClassWrapper {
+
+    public static void reapplyRightClassEffects(Player player, boolean sendReminder) {
+        if (AppliedStatus.getInstance().isDwarf(player.getName()) || DwarfClass.is(player)) {
+            AppliedStatus.getInstance().setDwarf(player.getName(), true);
+            DwarfClass.reapplyEffects(player);
+            if (sendReminder) {
+                player.sendMessage("Reminder : You are a dwarf.");
+            }
+        }
+        if (AppliedStatus.getInstance().isElf(player.getName()) || ElfClass.is(player)) {
+            AppliedStatus.getInstance().setElf(player.getName(), true);
+            ElfClass.reapplyEffects(player);
+            if (sendReminder) {
+                player.sendMessage("Reminder : You are an elf.");
+            }
+        }
+        if (AppliedStatus.getInstance().isFireDwarf(player.getName()) || FireDwarfClass.is(player)) {
+            AppliedStatus.getInstance().setFireDwarf(player.getName(), true);
+            FireDwarfClass.reapplyEffects(player);
+            if (sendReminder) {
+                player.sendMessage("Reminder : You are a fire dwarf.");
+            }
+        }
+        if (AppliedStatus.getInstance().isNaga(player.getName()) || NagaClass.is(player)) {
+            AppliedStatus.getInstance().setNaga(player.getName(), true);
+            NagaClass.reapplyEffects(player);
+            if (sendReminder) {
+                player.sendMessage("Reminder : You are a naga.");
+            }
+        }
+    }
+
+    public static void clearAllClassEffects(Player player) {
+        for (PotionEffect activePotionEffect : player.getActivePotionEffects()) {
+            if (activePotionEffect.getDuration() > 32766) {
+                player.removePotionEffect(activePotionEffect.getType());
+            }
+        }
+    }
+
+    public static boolean isItemForbidden(Player player, Material type) {
+        if (AppliedStatus.getInstance().isDwarf(player.getName())) {
+            return DwarfClass.isItemForbidden(type);
+        }
+        if (AppliedStatus.getInstance().isElf(player.getName())) {
+            return ElfClass.isItemForbidden(type);
+        }
+        if (AppliedStatus.getInstance().isFireDwarf(player.getName())) {
+            return FireDwarfClass.isItemForbidden(type);
+        }
+        if (AppliedStatus.getInstance().isNaga(player.getName())) {
+            return NagaClass.isItemForbidden(type);
+        }
+        return false;
+    }
+}

src/main/java/net/babamod/mineclass/classes/DwarfClass.java

@@ -0,0 +1,78 @@
+package net.babamod.mineclass.classes;
+
+import net.babamod.mineclass.utils.Pair;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class DwarfClass {
+
+    private static final Set<Material> forbiddenItems = new HashSet<Material>() {{
+        add(Material.DIAMOND_AXE);
+        add(Material.GOLDEN_AXE);
+        add(Material.IRON_AXE);
+        add(Material.NETHERITE_AXE);
+        add(Material.DIAMOND_HOE);
+        add(Material.GOLDEN_HOE);
+        add(Material.IRON_HOE);
+        add(Material.NETHERITE_HOE);
+        add(Material.BOW);
+        add(Material.TRIDENT);
+    }};
+
+    private static final Map<PotionEffectType, Integer> potionEffects = Stream.of(new Object[][]{
+            {PotionEffectType.HEALTH_BOOST, 2},
+            {PotionEffectType.DAMAGE_RESISTANCE, 1},
+            {PotionEffectType.HERO_OF_THE_VILLAGE, 1},
+            {PotionEffectType.FAST_DIGGING, 1},
+            {PotionEffectType.NIGHT_VISION, 1},
+    }).collect(Collectors.toMap(data -> (PotionEffectType) data[0], data -> (Integer) data[1]));
+
+    private static final Map<Material, List<Pair<Enchantment, Integer>>> classEnchantments = Stream.of(
+            new AbstractMap.SimpleEntry<>(Material.NETHERITE_PICKAXE, Arrays.asList(
+                    new Pair<>(Enchantment.DIG_SPEED, 8),
+                    new Pair<>(Enchantment.LOOT_BONUS_BLOCKS, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.DIAMOND_PICKAXE, Arrays.asList(
+                    new Pair<>(Enchantment.DIG_SPEED, 8),
+                    new Pair<>(Enchantment.LOOT_BONUS_BLOCKS, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.IRON_PICKAXE, Arrays.asList(
+                    new Pair<>(Enchantment.DIG_SPEED, 8),
+                    new Pair<>(Enchantment.LOOT_BONUS_BLOCKS, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.GOLDEN_PICKAXE, Arrays.asList(
+                    new Pair<>(Enchantment.DIG_SPEED, 8),
+                    new Pair<>(Enchantment.LOOT_BONUS_BLOCKS, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.STONE_PICKAXE, Arrays.asList(
+                    new Pair<>(Enchantment.DIG_SPEED, 8),
+                    new Pair<>(Enchantment.LOOT_BONUS_BLOCKS, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.WOODEN_PICKAXE, Arrays.asList(
+                    new Pair<>(Enchantment.DIG_SPEED, 8),
+                    new Pair<>(Enchantment.LOOT_BONUS_BLOCKS, 2)
+            ))
+    ).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+    public static boolean is(Player player) {
+        return player.getActivePotionEffects().stream().map(PotionEffect::getType).collect(Collectors.toList()).containsAll(potionEffects.keySet());
+    }
+
+    public static void reapplyEffects(Player player) {
+        potionEffects.forEach((key, value) -> {
+            player.removePotionEffect(key);
+            player.addPotionEffect(new PotionEffect(key, Integer.MAX_VALUE, value - 1, false, false));
+        });
+    }
+
+    public static boolean isItemForbidden(Material type) {
+        return forbiddenItems.contains(type);
+    }
+}

src/main/java/net/babamod/mineclass/classes/ElfClass.java

@@ -0,0 +1,61 @@
+package net.babamod.mineclass.classes;
+
+import net.babamod.mineclass.utils.Pair;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class ElfClass {
+
+    private static final Set<Material> forbiddenItems = new HashSet<Material>() {{
+        add(Material.DIAMOND_SWORD);
+        add(Material.GOLDEN_SWORD);
+        add(Material.IRON_SWORD);
+        add(Material.NETHERITE_SWORD);
+        add(Material.DIAMOND_PICKAXE);
+        add(Material.GOLDEN_PICKAXE);
+        add(Material.IRON_PICKAXE);
+        add(Material.NETHERITE_PICKAXE);
+        add(Material.DIAMOND_SHOVEL);
+        add(Material.GOLDEN_SHOVEL);
+        add(Material.IRON_SHOVEL);
+        add(Material.NETHERITE_SHOVEL);
+        add(Material.CROSSBOW);
+        add(Material.TRIDENT);
+    }};
+
+    private static final Map<PotionEffectType, Integer> potionEffects = Stream.of(new Object[][]{
+            {PotionEffectType.SPEED, 2},
+            {PotionEffectType.JUMP, 3},
+            {PotionEffectType.LUCK, 1},
+            {PotionEffectType.NIGHT_VISION, 1},
+    }).collect(Collectors.toMap(data -> (PotionEffectType) data[0], data -> (Integer) data[1]));
+
+    private static final Map<Material, List<Pair<Enchantment, Integer>>> classEnchantments = Stream.of(
+            new AbstractMap.SimpleEntry<>(Material.BOW, Arrays.asList(
+                    new Pair<>(Enchantment.ARROW_INFINITE, 1),
+                    new Pair<>(Enchantment.ARROW_DAMAGE, 8)
+            ))
+    ).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+    public static boolean is(Player player) {
+        return player.getActivePotionEffects().stream().map(PotionEffect::getType).collect(Collectors.toList()).containsAll(potionEffects.keySet());
+    }
+
+    public static void reapplyEffects(Player player) {
+        potionEffects.forEach((key, value) -> {
+            player.removePotionEffect(key);
+            player.addPotionEffect(new PotionEffect(key, Integer.MAX_VALUE, value - 1, false, false));
+        });
+    }
+
+    public static boolean isItemForbidden(Material type) {
+        return forbiddenItems.contains(type);
+    }
+}

src/main/java/net/babamod/mineclass/classes/FireDwarfClass.java

@@ -0,0 +1,98 @@
+package net.babamod.mineclass.classes;
+
+import net.babamod.mineclass.utils.Pair;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class FireDwarfClass {
+
+    private static final Set<Material> forbiddenItems = new HashSet<Material>() {{
+        add(Material.DIAMOND_SWORD);
+        add(Material.GOLDEN_SWORD);
+        add(Material.IRON_SWORD);
+        add(Material.NETHERITE_SWORD);
+        add(Material.DIAMOND_HOE);
+        add(Material.GOLDEN_HOE);
+        add(Material.IRON_HOE);
+        add(Material.NETHERITE_HOE);
+        add(Material.DIAMOND_SHOVEL);
+        add(Material.GOLDEN_SHOVEL);
+        add(Material.IRON_SHOVEL);
+        add(Material.NETHERITE_SHOVEL);
+        add(Material.BOW);
+        add(Material.ARROW);
+        add(Material.TRIDENT);
+    }};
+
+    private static final Map<PotionEffectType, Integer> potionEffects = Stream.of(new Object[][]{
+            {PotionEffectType.FIRE_RESISTANCE, 1},
+            {PotionEffectType.FAST_DIGGING, 1},
+            {PotionEffectType.JUMP, 2},
+            {PotionEffectType.NIGHT_VISION, 1},
+            {PotionEffectType.HEALTH_BOOST, 2},
+    }).collect(Collectors.toMap(data -> (PotionEffectType) data[0], data -> (Integer) data[1]));
+
+    private static final Map<Material, List<Pair<Enchantment, Integer>>> classEnchantment = Stream.of(
+            new AbstractMap.SimpleEntry<>(Material.NETHERITE_AXE, Collections.singletonList(
+                    new Pair<>(Enchantment.FIRE_ASPECT, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.DIAMOND_AXE, Collections.singletonList(
+                    new Pair<>(Enchantment.FIRE_ASPECT, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.IRON_AXE, Collections.singletonList(
+                    new Pair<>(Enchantment.FIRE_ASPECT, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.GOLDEN_AXE, Collections.singletonList(
+                    new Pair<>(Enchantment.FIRE_ASPECT, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.STONE_AXE, Collections.singletonList(
+                    new Pair<>(Enchantment.FIRE_ASPECT, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.WOODEN_AXE, Collections.singletonList(
+                    new Pair<>(Enchantment.FIRE_ASPECT, 2)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.NETHERITE_PICKAXE, Collections.singletonList(
+                    new Pair<>(Enchantment.DIG_SPEED, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.DIAMOND_PICKAXE, Collections.singletonList(
+                    new Pair<>(Enchantment.DIG_SPEED, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.IRON_PICKAXE, Collections.singletonList(
+                    new Pair<>(Enchantment.DIG_SPEED, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.GOLDEN_PICKAXE, Collections.singletonList(
+                    new Pair<>(Enchantment.DIG_SPEED, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.STONE_PICKAXE, Collections.singletonList(
+                    new Pair<>(Enchantment.DIG_SPEED, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.WOODEN_PICKAXE, Collections.singletonList(
+                    new Pair<>(Enchantment.DIG_SPEED, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.FLINT_AND_STEEL, new ArrayList<Pair<Enchantment, Integer>>())
+            // See to make infinity working on crossbow
+            // Inventory auto smelt
+    ).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+    public static boolean is(Player player) {
+        return player.getActivePotionEffects().stream().map(PotionEffect::getType).collect(Collectors.toList()).containsAll(potionEffects.keySet());
+    }
+
+    public static void reapplyEffects(Player player) {
+        potionEffects.forEach((key, value) -> {
+            player.removePotionEffect(key);
+            player.addPotionEffect(new PotionEffect(key, Integer.MAX_VALUE, value - 1, false, false));
+        });
+    }
+
+    public static boolean isItemForbidden(Material type) {
+        return forbiddenItems.contains(type);
+    }
+}

src/main/java/net/babamod/mineclass/classes/NagaClass.java

@@ -0,0 +1,82 @@
+package net.babamod.mineclass.classes;
+
+import net.babamod.mineclass.utils.Pair;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class NagaClass {
+
+    private static final Set<Material> forbiddenItems = new HashSet<Material>() {{
+        add(Material.DIAMOND_SWORD);
+        add(Material.GOLDEN_SWORD);
+        add(Material.IRON_SWORD);
+        add(Material.NETHERITE_SWORD);
+        add(Material.DIAMOND_AXE);
+        add(Material.GOLDEN_AXE);
+        add(Material.IRON_AXE);
+        add(Material.NETHERITE_AXE);
+        add(Material.CROSSBOW);
+        add(Material.BOW);
+        add(Material.FLINT_AND_STEEL);
+    }};
+
+    private static final Map<PotionEffectType, Integer> potionEffects = Stream.of(new Object[][]{
+            {PotionEffectType.DOLPHINS_GRACE, 1},
+            {PotionEffectType.CONDUIT_POWER, 1},
+            {PotionEffectType.WATER_BREATHING, 1},
+            {PotionEffectType.SLOW, 2},
+            {PotionEffectType.WEAKNESS, 1},
+    }).collect(Collectors.toMap(data -> (PotionEffectType) data[0], data -> (Integer) data[1]));
+
+    private static final Map<Material, List<Pair<Enchantment, Integer>>> classEnchantment = Stream.of(
+            new AbstractMap.SimpleEntry<>(Material.TRIDENT, Arrays.asList(
+                    new Pair<>(Enchantment.LOYALTY, 3),
+                    new Pair<>(Enchantment.IMPALING, 5),
+                    new Pair<>(Enchantment.CHANNELING, 1)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.NETHERITE_HOE, Collections.singletonList(
+                    new Pair<>(Enchantment.DAMAGE_ALL, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.DIAMOND_HOE, Collections.singletonList(
+                    new Pair<>(Enchantment.DAMAGE_ALL, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.IRON_HOE, Collections.singletonList(
+                    new Pair<>(Enchantment.DAMAGE_ALL, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.WOODEN_HOE, Collections.singletonList(
+                    new Pair<>(Enchantment.DAMAGE_ALL, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.GOLDEN_HOE, Collections.singletonList(
+                    new Pair<>(Enchantment.DAMAGE_ALL, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.STONE_HOE, Collections.singletonList(
+                    new Pair<>(Enchantment.DAMAGE_ALL, 5)
+            )),
+            new AbstractMap.SimpleEntry<>(Material.FISHING_ROD, Arrays.asList(
+                    new Pair<>(Enchantment.LUCK, 3),
+                    new Pair<>(Enchantment.LURE, 3)
+            ))
+    ).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+
+    public static boolean is(Player player) {
+        return player.getActivePotionEffects().stream().map(PotionEffect::getType).collect(Collectors.toList()).containsAll(potionEffects.keySet());
+    }
+
+    public static void reapplyEffects(Player player) {
+        potionEffects.forEach((key, value) -> {
+            player.removePotionEffect(key);
+            player.addPotionEffect(new PotionEffect(key, Integer.MAX_VALUE, value - 1, false, false));
+        });
+    }
+
+    public static boolean isItemForbidden(Material type) {
+        return forbiddenItems.contains(type);
+    }
+}

src/main/java/net/babamod/mineclass/commands/CommandClass.java

@@ -0,0 +1,81 @@
+package net.babamod.mineclass.commands;
+
+import net.babamod.mineclass.classes.*;
+import net.babamod.mineclass.utils.AppliedStatus;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public class CommandClass implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        if (args.length == 0) {
+            sender.sendMessage("You need to use this command with one of the suggested arguments.");
+            return false;
+        }
+        if (sender instanceof Player) {
+            Player player = (Player) sender;
+            if (args[0].equals("dwarf")) {
+                AppliedStatus.getInstance().setElf(player.getName(), false);
+                AppliedStatus.getInstance().setFireDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setNaga(player.getName(), false);
+                AppliedStatus.getInstance().setDwarf(player.getName(), true);
+                ClassWrapper.clearAllClassEffects(player);
+                DwarfClass.reapplyEffects(player);
+                return true;
+            }
+            if (args[0].equals("elf")) {
+                AppliedStatus.getInstance().setDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setFireDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setNaga(player.getName(), false);
+                AppliedStatus.getInstance().setElf(player.getName(), true);
+                ClassWrapper.clearAllClassEffects(player);
+                ElfClass.reapplyEffects(player);
+                return true;
+            }
+            if (args[0].equals("fire_dwarf")) {
+                AppliedStatus.getInstance().setDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setElf(player.getName(), false);
+                AppliedStatus.getInstance().setNaga(player.getName(), false);
+                AppliedStatus.getInstance().setFireDwarf(player.getName(), true);
+                ClassWrapper.clearAllClassEffects(player);
+                FireDwarfClass.reapplyEffects(player);
+                return true;
+            }
+            if (args[0].equals("naga")) {
+                AppliedStatus.getInstance().setDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setElf(player.getName(), false);
+                AppliedStatus.getInstance().setFireDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setNaga(player.getName(), true);
+                ClassWrapper.clearAllClassEffects(player);
+                NagaClass.reapplyEffects(player);
+                return true;
+            }
+            if (args[0].equals("clear")) {
+                AppliedStatus.getInstance().setDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setElf(player.getName(), false);
+                AppliedStatus.getInstance().setFireDwarf(player.getName(), false);
+                AppliedStatus.getInstance().setNaga(player.getName(), false);
+                ClassWrapper.clearAllClassEffects(player);
+                return true;
+            }
+            if (args[0].equals("whoami")) {
+                if (AppliedStatus.getInstance().isDwarf(player.getName())) {
+                    player.sendMessage("You are a dwarf.");
+                }
+                if (AppliedStatus.getInstance().isElf(player.getName())) {
+                    player.sendMessage("You are an elf.");
+                }
+                if (AppliedStatus.getInstance().isFireDwarf(player.getName())) {
+                    player.sendMessage("You are a fire dwarf.");
+                }
+                if (AppliedStatus.getInstance().isNaga(player.getName())) {
+                    player.sendMessage("You are a naga.");
+                }
+                return true;
+            }
+        }
+        return false;
+    }
+}

src/main/java/net/babamod/mineclass/utils/AppliedStatus.java

@@ -0,0 +1,102 @@
+package net.babamod.mineclass.utils;
+
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.Objects;
+
+public class AppliedStatus implements Serializable {
+    /**
+     * Instance unique pré-initialisée
+     */
+    private static AppliedStatus INSTANCE;
+    private final HashMap<String, Boolean> dwarf;
+    private final HashMap<String, Boolean> elf;
+    private final HashMap<String, Boolean> fireDwarf;
+    private final HashMap<String, Boolean> naga;
+
+    /**
+     * Constructeur privé
+     */
+    private AppliedStatus() {
+        dwarf = new HashMap<>();
+        elf = new HashMap<>();
+        fireDwarf = new HashMap<>();
+        naga = new HashMap<>();
+    }
+
+    /**
+     * Point d'accès pour l'instance unique du singleton
+     */
+    public static synchronized AppliedStatus getInstance() {
+        if (INSTANCE == null) {
+            INSTANCE = new AppliedStatus();
+        }
+
+        return INSTANCE;
+    }
+
+    public void setDwarf(String playerName, boolean dwarf) {
+        this.dwarf.put(playerName, dwarf);
+    }
+
+    public void setElf(String playerName, boolean elf) {
+        this.elf.put(playerName, elf);
+    }
+
+    public void setFireDwarf(String playerName, boolean fireDwarf) {
+        this.fireDwarf.put(playerName, fireDwarf);
+    }
+
+    public void setNaga(String playerName, boolean naga) {
+        this.naga.put(playerName, naga);
+    }
+
+    public boolean isDwarf(String playerName) {
+        return dwarf.getOrDefault(playerName, false);
+    }
+
+    public boolean isElf(String playerName) {
+        return elf.getOrDefault(playerName, false);
+    }
+
+    public boolean isFireDwarf(String playerName) {
+        return fireDwarf.getOrDefault(playerName, false);
+    }
+
+    public boolean isNaga(String playerName) {
+        return naga.getOrDefault(playerName, false);
+    }
+
+    public boolean hasAClass(String playerName) {
+        return dwarf.getOrDefault(playerName, false) ||
+                elf.getOrDefault(playerName, false) ||
+                fireDwarf.getOrDefault(playerName, false) ||
+                naga.getOrDefault(playerName, false);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        AppliedStatus that = (AppliedStatus) o;
+        return Objects.equals(dwarf, that.dwarf) &&
+                Objects.equals(elf, that.elf) &&
+                Objects.equals(fireDwarf, that.fireDwarf) &&
+                Objects.equals(naga, that.naga);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(dwarf, elf, fireDwarf, naga);
+    }
+
+    @Override
+    public String toString() {
+        return "AppliedStatus{" +
+                "dwarf=" + dwarf +
+                ", elf=" + elf +
+                ", fireDwarf=" + fireDwarf +
+                ", naga=" + naga +
+                '}';
+    }
+}

src/main/java/net/babamod/mineclass/utils/ApplyClassStatusTask.java

@@ -0,0 +1,23 @@
+package net.babamod.mineclass.utils;
+
+import net.babamod.mineclass.classes.ClassWrapper;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.scheduler.BukkitRunnable;
+
+public class ApplyClassStatusTask extends BukkitRunnable {
+
+    private final JavaPlugin plugin;
+    private final Player player;
+
+    public ApplyClassStatusTask(JavaPlugin plugin, Player player) {
+        this.plugin = plugin;
+        this.player = player;
+    }
+
+    @Override
+    public void run() {
+        ClassWrapper.reapplyRightClassEffects(player, false);
+    }
+
+}

src/main/java/net/babamod/mineclass/utils/MineClassListeners.java

@@ -0,0 +1,46 @@
+package net.babamod.mineclass.utils;
+
+import net.babamod.mineclass.Mineclass;
+import net.babamod.mineclass.classes.ClassWrapper;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.EntityPickupItemEvent;
+import org.bukkit.event.player.PlayerItemConsumeEvent;
+import org.bukkit.event.player.PlayerJoinEvent;
+
+public class MineClassListeners implements Listener {
+
+    private final Mineclass plugin;
+
+    public MineClassListeners(Mineclass plugin) {
+        this.plugin = plugin;
+        this.plugin.getServer().getPluginManager().registerEvents(this, plugin);
+    }
+
+    @EventHandler
+    public void on(PlayerJoinEvent event) {
+        Player player = event.getPlayer();
+        ClassWrapper.reapplyRightClassEffects(player, true);
+    }
+
+    @EventHandler
+    public void on(PlayerItemConsumeEvent event) {
+        if (event.getItem().getType().equals(Material.MILK_BUCKET)) {
+            if (AppliedStatus.getInstance().hasAClass(event.getPlayer().getName())) {
+                new ApplyClassStatusTask(this.plugin, event.getPlayer()).runTaskLater(this.plugin, 10);
+            }
+        }
+    }
+
+    @EventHandler
+    public void on(EntityPickupItemEvent event) {
+        if (event.getEntity() instanceof Player) {
+            Player player = (Player) event.getEntity();
+            if (ClassWrapper.isItemForbidden(player, event.getItem().getItemStack().getType())) {
+                event.setCancelled(true);
+            }
+        }
+    }
+}

src/main/java/net/babamod/mineclass/utils/Pair.java

@@ -0,0 +1,27 @@
+package net.babamod.mineclass.utils;
+
+public class Pair<F, S> {
+    private F first;
+    private S second;
+
+    public Pair(F first, S second) {
+        this.first = first;
+        this.second = second;
+    }
+
+    public F getFirst() {
+        return first;
+    }
+
+    public void setFirst(F first) {
+        this.first = first;
+    }
+
+    public S getSecond() {
+        return second;
+    }
+
+    public void setSecond(S second) {
+        this.second = second;
+    }
+}