src/de/steamwar/lobby/LobbySystem.java

@@ -27,6 +27,8 @@ import de.steamwar.lobby.command.PortalCommand;
 import de.steamwar.lobby.jumpandrun.JumpAndRun;
 import de.steamwar.lobby.listener.*;
 import de.steamwar.lobby.map.CustomMapCommand;
+import de.steamwar.lobby.particle.ParticleListener;
+import de.steamwar.lobby.special.easter.EggHunt;
 import de.steamwar.lobby.team.TeamPlayer;
 import de.steamwar.message.Message;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -71,6 +73,8 @@ public class LobbySystem extends JavaPlugin {
         new TeleporterListener();
         new TeamPlayer();
 
+        EggHunt.init();
+
         new AlphaWall(l -> l.getX() > 1199, AlphaWall.REFLECT_X);
         new AlphaWall(l -> l.getX() < 2977, AlphaWall.REFLECT_X);
         new AlphaWall(l -> l.getZ() > 892, AlphaWall.REFLECT_Z);

src/de/steamwar/lobby/LobbySystem.properties

@@ -20,9 +20,15 @@ PARTICLE_INVENTORY = §6Particle
 PARTICLE_DESELECT = §8No particle
 PARTICLE_LOCKED = {0} §8- §c§lLocked
 
-PARTICLE_UNLOCKED_BY_TEAM = §fJoin the team
+PARTICLE_UNLOCKED_BY = §eUnlocked by
+PARTICLE_UNLOCKED_BY_TEAM = §fJoin a team
+PARTICLE_UNLOCKED_BY_SPECIFIC_TEAM = §fTeam {0}
 PARTICLE_UNLOCKED_BY_EVENT = §fEvent participation
 PARTICLE_UNLOCKED_BY_SERVER_TEAM = §fServer Team
+PARTICLE_UNLOCKED_BY_EVENT_PLACEMENT = §f{0} 1., 2. or 3. Place
+PARTICLE_UNLOCKED_BY_EVENT_PARTICIPATION = §f{0}
+PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_HALF = §fFind 45 Easter Eggs
+PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_DIFFICULTY = §fFind all Easter Eggs with difficulty {0}
 
 PARTICLE_ATTRIBUTE_CIRCLE = §8-§f Ring
 PARTICLE_ATTRIBUTE_BI_CIRCLE = §8-§f Double ring
@@ -32,8 +38,6 @@ PARTICLE_ATTRIBUTE_NON_FLOOR = §8-§f in air
 PARTICLE_ATTRIBUTE_WING = §8-§f Wings
 PARTICLE_ATTRIBUTE = §eAttributes§7:
 
-PARTICLE_UNLOCKED_BY = §eUnlocked by
-
 PARTICLE_SELECT = §eClick to select
 
 PARTICLE_SNEEZE = §aSneeze
@@ -71,9 +75,6 @@ PARTICLE_WATER_FIRE = §bWater§7/§cFire
 PARTICLE_MAGIC_ENCHANTING = §5Magic/Enchantment
 PARTICLE_WINGS_EVIL = §5Purple wings
 
-PARTICLE_UNLOCKED_BY_EVENT_PLACEMENT = §f{0} 1., 2. or 3. Place
-PARTICLE_UNLOCKED_BY_EVENT_PARTICIPATION = §f{0}
-
 PARTICLE_EVENT_ENCHANTING = §cEnchantment
 PARTICLE_EVENT_CLOUD = §fClouds
 PARTICLE_EVENT_SMOKE = §7Smoke
@@ -87,3 +88,10 @@ JUMP_AND_RUN_PROGRESS = §e{0}§8/§f{1}   §c{2}   §7{3}
 JUMP_AND_RUN_CANCEL = {0}
 JUMP_AND_RUN_TIME = mm:ss SSS
 JUMP_AND_RUN_FINISHED = §aFinished in {0} with {1} fails
+
+# Easter Egg Hunt
+DIFFICULTY_EASY = §aEasy
+DIFFICULTY_MEDIUM = §eMedium
+DIFFICULTY_HARD = §cHard
+DIFFICULTY_EXTREME = §5Extreme
+DIFFICULTY_ADVANCED = §5Advanced

src/de/steamwar/lobby/LobbySystem_de.properties

@@ -20,9 +20,15 @@ PARTICLE_INVENTORY = §6Partikel
 PARTICLE_DESELECT = §8Keine Partikel
 PARTICLE_LOCKED = {0} §8- §c§lGesperrt
 
+PARTICLE_UNLOCKED_BY = §eFreigeschaltet durch
 PARTICLE_UNLOCKED_BY_TEAM = §fTeambeitritt
+PARTICLE_UNLOCKED_BY_SPECIFIC_TEAM = §fTeam {0}
 PARTICLE_UNLOCKED_BY_EVENT = §fEventteilnahme
 PARTICLE_UNLOCKED_BY_SERVER_TEAM = §fServerteam
+PARTICLE_UNLOCKED_BY_EVENT_PLACEMENT = §f{0} 1., 2. oder 3. Platz
+PARTICLE_UNLOCKED_BY_EVENT_PARTICIPATION = §f{0}
+PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_HALF = §fFinde 45 Oster-Eierer
+PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_DIFFICULTY = §fAlle Eierer mit Schwierigkeit {0} finden
 
 PARTICLE_ATTRIBUTE_CIRCLE = §8-§f Ring
 PARTICLE_ATTRIBUTE_BI_CIRCLE = §8-§f Doppelring
@@ -32,8 +38,6 @@ PARTICLE_ATTRIBUTE_NON_FLOOR = §8-§f in Luft
 PARTICLE_ATTRIBUTE_WING = §8-§f Flügel
 PARTICLE_ATTRIBUTE = §eAttribute§7:
 
-PARTICLE_UNLOCKED_BY = §eFreigeschaltet durch
-
 PARTICLE_SELECT = §eZum Auswählen klicken
 
 PARTICLE_SNEEZE = §aSneeze
@@ -71,11 +75,6 @@ PARTICLE_WATER_FIRE = §bWasser§7/§cFeuer
 PARTICLE_MAGIC_ENCHANTING = §5Magie§7/§eZauber
 PARTICLE_WINGS_EVIL = §5Lila Flügel
 
-PARTICLE_UNLOCKED_BY_EVENT_PLACEMENT = §f{0} 1., 2. oder 3. Platz
-PARTICLE_UNLOCKED_BY_EVENT_PARTICIPATION = §f{0}
-
-JUMP_AND_RUN_FINISHED = §aBeendet in {0} mit {1} Fails
-
 PARTICLE_EVENT_ENCHANTING = §cVerzaubert
 PARTICLE_EVENT_CLOUD = §fWolken
 PARTICLE_EVENT_SMOKE = §7Rauch
@@ -84,3 +83,12 @@ PARTICLE_EVENT_WINGS = §fFlügel
 PARTICLE_EVENT_RAIN_CLOUD = §fRegenwolke
 PARTICLE_EVENT_WGS = §fWGS
 PARTICLE_EVENT_WARGEARCLASH = §fClash
+
+JUMP_AND_RUN_FINISHED = §aBeendet in {0} mit {1} Fails
+
+# Easter Egg Hunt
+DIFFICULTY_EASY = §aLeicht
+DIFFICULTY_MEDIUM = §eMedium
+DIFFICULTY_HARD = §cHart
+DIFFICULTY_EXTREME = §5Extrem
+DIFFICULTY_ADVANCED = §5Advanced

src/de/steamwar/lobby/otherparticle/Particle.java

@@ -0,0 +1,47 @@
+package de.steamwar.lobby.otherparticle;
+
+import de.steamwar.inventory.SWItem;
+import de.steamwar.lobby.LobbySystem;
+import de.steamwar.sql.SteamwarUser;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Predicate;
+
+public class Particle {
+
+    private ParticleItem item;
+
+    private static class ParticleItem {
+
+        private Material material;
+        private String name;
+        private Set<String> attributes = new LinkedHashSet<>();
+        private String unlockedBy;
+
+        public SWItem toSWItem(Player player) {
+            String translatedName = LobbySystem.getMessage().parse(name, player);
+            List<String> lore = new ArrayList<>();
+            lore.add("");
+            if (!attributes.isEmpty()) {
+                lore.add(LobbySystem.getMessage().parse("PARTICLE_ATTRIBUTE", player));
+                attributes.forEach(attribute -> lore.add(LobbySystem.getMessage().parse(attribute, player)));
+                lore.add("");
+            }
+            if (unlockedBy != null) {
+                lore.add(LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY", player));
+                lore.add(LobbySystem.getMessage().parse(unlockedBy, player));
+                lore.add("");
+            }
+            lore.add(LobbySystem.getMessage().parse("PARTICLE_SELECT", player));
+            return new SWItem(material, translatedName, lore, false, clickType -> {});
+        }
+    }
+
+    private Predicate<SteamwarUser> unlocked = player -> true;
+
+}

src/de/steamwar/lobby/otherparticle/ParticleRequirement.java

@@ -0,0 +1,179 @@
+package de.steamwar.lobby.otherparticle;
+
+import de.steamwar.lobby.LobbySystem;
+import de.steamwar.lobby.special.easter.EggDifficulty;
+import de.steamwar.lobby.special.easter.EggHunt;
+import de.steamwar.sql.Event;
+import de.steamwar.sql.SteamwarUser;
+import de.steamwar.sql.Team;
+import de.steamwar.sql.UserGroup;
+import org.bukkit.entity.Player;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+
+public interface ParticleRequirement {
+
+    String getRequirementName(Player player);
+    ParticleRequirementPredicate getRequirement();
+
+    ParticleRequirement NO_REQUIRMENT = new ParticleRequirement() {
+        @Override
+        public String getRequirementName(Player player) {
+            return null;
+        }
+
+        @Override
+        public ParticleRequirementPredicate getRequirement() {
+            return (player, eventTeilname, eggHuntConfig) -> true;
+        }
+    };
+    ParticleRequirement HAS_TEAM = new ParticleRequirement() {
+        @Override
+        public String getRequirementName(Player player) {
+            return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_TEAM", player);
+        }
+
+        @Override
+        public ParticleRequirementPredicate getRequirement() {
+            return (steamwarUser, eventTeilname, eggHuntConfig) -> steamwarUser.getTeam() != 0 || steamwarUser.getUserGroup() != UserGroup.Member;
+        }
+    };
+    ParticleRequirement EVENT_PARTICIPATION = new ParticleRequirement() {
+        @Override
+        public String getRequirementName(Player player) {
+            return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_EVENT", player);
+        }
+
+        @Override
+        public ParticleRequirementPredicate getRequirement() {
+            return (steamwarUser, eventTeilname, eggHuntConfig) -> !eventTeilname.isEmpty();
+        }
+    };
+    ParticleRequirement SERVER_TEAM = new ParticleRequirement() {
+        @Override
+        public String getRequirementName(Player player) {
+            return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_SERVER_TEAM", player);
+        }
+
+        @Override
+        public ParticleRequirementPredicate getRequirement() {
+            return (steamwarUser, eventTeilname, eggHuntConfig) -> false;
+        }
+    };
+    ParticleRequirement EGG_HUNT_EASY = _easterEggHuntDifficulty(EggDifficulty.EASY);
+    ParticleRequirement EGG_HUNT_MEDIUM = _easterEggHuntDifficulty(EggDifficulty.MEDIUM);
+    ParticleRequirement EGG_HUNT_HARD = _easterEggHuntDifficulty(EggDifficulty.HARD);
+    ParticleRequirement EGG_HUNT_EXTREME = _easterEggHuntDifficulty(EggDifficulty.EXTREME);
+    ParticleRequirement EGG_HUNT_ADVANCED = _easterEggHuntDifficulty(EggDifficulty.ADVANCED);
+    ParticleRequirement EGG_HUNT_FOUND_HALF = new ParticleRequirement() {
+        @Override
+        public String getRequirementName(Player player) {
+            return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_HALF", player);
+        }
+
+        @Override
+        public ParticleRequirementPredicate getRequirement() {
+            return (user, eventTeilname, eggHuntConfig) -> {
+                if (eggHuntConfig == null) return false;
+                int count = 0;
+                for (int i = 0; i < eggHuntConfig.length(); i++) {
+                    if (eggHuntConfig.charAt(i) == '1') {
+                        count++;
+                    }
+                }
+                return count >= EggHunt.getEggList().size() / 2;
+            };
+        }
+    };
+
+    static ParticleRequirement specificTeam(int teamId) {
+        if (teamId == 0) return NO_REQUIRMENT;
+        String teamKuerzel = Team.get(teamId).getTeamKuerzel();
+        return new ParticleRequirement() {
+            @Override
+            public String getRequirementName(Player player) {
+                return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_SPECIFIC_TEAM", player, teamKuerzel);
+            }
+
+            @Override
+            public ParticleRequirementPredicate getRequirement() {
+                return (steamwarUser, eventTeilname, eggHuntConfig) -> steamwarUser.getTeam() == teamId;
+            }
+        };
+    }
+
+    static ParticleRequirement eventParticipation(int eventId) {
+        String eventName = Event.get(eventId).getEventName();
+        return new ParticleRequirement() {
+            @Override
+            public String getRequirementName(Player player) {
+                return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_EVENT_PARTICIPATION", player, eventName);
+            }
+
+            @Override
+            public ParticleRequirementPredicate getRequirement() {
+                return (steamwarUser, eventTeilname, eggHuntConfig) -> eventTeilname.contains(eventId);
+            }
+        };
+    }
+
+    static ParticleRequirement eventPlacement(int eventId, int... placementTeams) {
+        String eventName = Event.get(eventId).getEventName();
+        Set<Integer> teams = new HashSet<>();
+        for (int i : placementTeams) teams.add(i);
+        return new ParticleRequirement() {
+            @Override
+            public String getRequirementName(Player player) {
+                return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_EVENT_PLACEMENT", player, eventName);
+            }
+
+            @Override
+            public ParticleRequirementPredicate getRequirement() {
+                return (steamwarUser, eventTeilname, eggHuntConfig) -> {
+                    if (!eventTeilname.contains(eventId)) return false;
+                    return teams.contains(steamwarUser.getTeam());
+                };
+            }
+        };
+    }
+
+    static ParticleRequirement _easterEggHuntDifficulty(EggDifficulty difficulty) {
+        AtomicInteger count = new AtomicInteger();
+        List<Integer> eggs = EggHunt.getEggList()
+                .stream()
+                .map(egg -> {
+                    int id = count.getAndIncrement();
+                    if (egg.getDifficulty() == difficulty) {
+                        return id;
+                    } else {
+                        return null;
+                    }
+                })
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+
+        return new ParticleRequirement() {
+            @Override
+            public String getRequirementName(Player player) {
+                return LobbySystem.getMessage().parse("PARTICLE_UNLOCKED_BY_EASTER_EGG_HUNT_DIFFICULTY", player, LobbySystem.getMessage().parse(difficulty.getMessage(), player));
+            }
+
+            @Override
+            public ParticleRequirementPredicate getRequirement() {
+                return (steamwarUser, integers, eggHuntConfig) -> {
+                    if (eggHuntConfig == null) return false;
+                    return eggs.stream().allMatch(id -> eggHuntConfig.length() >= id && eggHuntConfig.charAt(id) == '1');
+                };
+            }
+        };
+    }
+
+    interface ParticleRequirementPredicate {
+        boolean test(SteamwarUser user, Set<Integer> eventTeilname, String eggHuntConfig);
+    }
+}

src/de/steamwar/lobby/particle/ParticleBuilder.java

@@ -0,0 +1,15 @@
+package de.steamwar.lobby.particle;
+
+public class ParticleBuilder {
+
+    public ParticleBuilder() {
+    }
+
+    public void cloud() {}
+
+    public void offset() {}
+
+    public void rotated() {}
+
+    public void build() {}
+}

src/de/steamwar/lobby/particle/ParticleListener.java

@@ -17,13 +17,12 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package de.steamwar.lobby.listener;
+package de.steamwar.lobby.particle;
 
 import de.steamwar.lobby.LobbySystem;
 import de.steamwar.lobby.jumpandrun.JumpAndRun;
-import de.steamwar.lobby.particle.BaseParticle;
+import de.steamwar.lobby.listener.BasicListener;
-import de.steamwar.lobby.particle.ParticleData;
+import de.steamwar.lobby.listener.PlayerSpawn;
-import de.steamwar.lobby.particle.ParticleInventory;
 import de.steamwar.lobby.particle.particles.ParticleEnum;
 import de.steamwar.lobby.util.LobbyPlayer;
 import org.bukkit.Bukkit;

src/de/steamwar/lobby/special/easter/Egg.java

@@ -0,0 +1,102 @@
+package de.steamwar.lobby.special.easter;
+
+import de.steamwar.inventory.SWItem;
+import de.steamwar.lobby.LobbySystem;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.World;
+import org.bukkit.block.Block;
+import org.bukkit.block.Skull;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.SkullMeta;
+import org.bukkit.profile.PlayerProfile;
+import org.bukkit.util.Vector;
+
+import java.util.Arrays;
+import java.util.Map;
+import java.util.Optional;
+
+public class Egg {
+
+    private static final World world = Bukkit.getWorlds().get(0);
+
+    private final int x;
+    private final int y;
+    private final int z;
+    private final String message;
+    private final EggDifficulty difficulty;
+
+    private Optional<PlayerProfile> playerProfile = null;
+
+    public Egg(Map<String, ?> config) {
+        this.x = (int) config.get("x");
+        this.y = (int) config.get("y");
+        this.z = (int) config.get("z");
+        this.message = (String) config.get("name");
+        this.difficulty = EggDifficulty.valueOf(((String) config.get("difficulty")).toUpperCase());
+    }
+
+    public Vector getVector() {
+        return new Vector(x, y, z);
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public EggDifficulty getDifficulty() {
+        return difficulty;
+    }
+
+    public Block getBlock() {
+        Block block = world.getBlockAt(x, y, z);
+        if (block.getType() != Material.PLAYER_HEAD && block.getType() != Material.PLAYER_WALL_HEAD) {
+            System.out.println("Block is not a skull: " + block.getType() + " " + x + "," + y + "," + z);
+            return null;
+        }
+        return block;
+    }
+
+    public SWItem getItem(Player player, boolean found) {
+        if (playerProfile == null) {
+            Block block = getBlock();
+            if (block == null) {
+                playerProfile = Optional.empty();
+                return null;
+            }
+
+            Skull skull = (Skull) block.getState();
+            PlayerProfile playerProfile = skull.getOwnerProfile();
+            if (playerProfile == null) {
+                this.playerProfile = Optional.empty();
+                return null;
+            }
+            this.playerProfile = Optional.of(playerProfile);
+        }
+
+        if (!playerProfile.isPresent()) {
+            return null;
+        }
+
+        SWItem swItem;
+        if (found) {
+            swItem = new SWItem();
+            ItemStack itemStack = new ItemStack(Material.PLAYER_HEAD);
+            SkullMeta skullMeta = (SkullMeta) itemStack.getItemMeta();
+            skullMeta.setOwnerProfile(playerProfile.get());
+            itemStack.setItemMeta(skullMeta);
+            swItem.setItemStack(itemStack);
+        } else {
+            swItem = SWItem.getPlayerSkull("MHF_Question");
+        }
+
+        swItem.setLore(Arrays.asList(LobbySystem.getMessage().parse(difficulty.getMessage(), player)));
+        try {
+            swItem.setName("§f" + LobbySystem.getMessage().parse(message, player));
+        } catch (Exception e) {
+            swItem.setName("§f" + message);
+        }
+        return swItem;
+    }
+}

src/de/steamwar/lobby/special/easter/EggClickListener.java

@@ -0,0 +1,64 @@
+package de.steamwar.lobby.special.easter;
+
+import de.steamwar.lobby.LobbySystem;
+import de.steamwar.lobby.listener.BasicListener;
+import de.steamwar.sql.UserConfig;
+import org.bukkit.Particle;
+import org.bukkit.Sound;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.util.Vector;
+
+public class EggClickListener extends BasicListener {
+
+    @EventHandler
+    public void onPlayerInteract(PlayerInteractEvent event) {
+        if (event.getAction() != Action.RIGHT_CLICK_BLOCK) {
+            return;
+        }
+        Block block = event.getClickedBlock();
+        if (block == null) {
+            return;
+        }
+        Vector vector = block.getLocation().toVector();
+        Egg egg = null;
+        int index = -1;
+        for (Egg egg1 : EggHunt.getEggList()) {
+            index++;
+            if (egg1.getVector().equals(vector)) {
+                egg = egg1;
+                break;
+            }
+        }
+        if (egg == null) {
+            return;
+        }
+        Player player = event.getPlayer();
+        String found = UserConfig.getConfig(player.getUniqueId(), "egghunt");
+        if (found == null) {
+            found = "";
+        }
+        StringBuilder builder = new StringBuilder(found);
+        while (builder.length() <= index) {
+            builder.append("0");
+        }
+        if (builder.charAt(index) == '1') {
+            return;
+        }
+
+        try {
+            player.sendTitle(LobbySystem.getMessage().parse(egg.getMessage(), player), LobbySystem.getMessage().parse(egg.getDifficulty().getMessage(), player), 0, 80, 5);
+        } catch (Exception e) {
+            player.sendTitle(egg.getMessage(), LobbySystem.getMessage().parse(egg.getDifficulty().getMessage(), player), 0, 10, 5);
+        }
+
+        player.spawnParticle(Particle.END_ROD, block.getLocation().add(0.5, 0.5, 0.5), 10, 0.5, 0.5, 0.5, 0.1);
+        player.playSound(player.getLocation(), Sound.ENTITY_PLAYER_LEVELUP, 0.25f, 1.0f);
+
+        builder.setCharAt(index, '1');
+        UserConfig.updatePlayerConfig(player.getUniqueId(), "egghunt", builder.toString());
+    }
+}

src/de/steamwar/lobby/special/easter/EggDifficulty.java

@@ -0,0 +1,19 @@
+package de.steamwar.lobby.special.easter;
+
+public enum EggDifficulty {
+    EASY("DIFFICULTY_EASY"),
+    MEDIUM("DIFFICULTY_MEDIUM"),
+    HARD("DIFFICULTY_HARD"),
+    EXTREME("DIFFICULTY_EXTREME"),
+    ADVANCED("DIFFICULTY_ADVANCED");
+
+    private final String message;
+
+    EggDifficulty(String message) {
+        this.message = message;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}

src/de/steamwar/lobby/special/easter/EggHunt.java

@@ -0,0 +1,35 @@
+package de.steamwar.lobby.special.easter;
+
+import de.steamwar.lobby.LobbySystem;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class EggHunt {
+
+    private static List<Egg> eggList = new ArrayList<>();
+
+    public static void init() {
+    }
+
+    static {
+        new EggHuntCommand();
+        new EggClickListener();
+
+        File file = new File(LobbySystem.getPlugin().getDataFolder(), "eggs.yml");
+        FileConfiguration fileConfiguration = YamlConfiguration.loadConfiguration(file);
+        fileConfiguration.getList("eggs")
+                        .forEach(o -> {
+                            if (!(o instanceof Map)) return;
+                            eggList.add(new Egg((Map) o));
+                        });
+    }
+
+    public static List<Egg> getEggList() {
+        return eggList;
+    }
+}

src/de/steamwar/lobby/special/easter/EggHuntCommand.java

@@ -0,0 +1,38 @@
+package de.steamwar.lobby.special.easter;
+
+import de.steamwar.command.SWCommand;
+import de.steamwar.inventory.SWItem;
+import de.steamwar.inventory.SWListInv;
+import de.steamwar.sql.UserConfig;
+import org.bukkit.entity.Player;
+
+import java.util.Comparator;
+import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Collectors;
+
+public class EggHuntCommand extends SWCommand {
+
+    public EggHuntCommand() {
+        super("egghunt", "easteregg", "easter", "egg", "eh");
+    }
+
+    @Register
+    public void genericCommand(Player player) {
+        AtomicInteger atomicInteger = new AtomicInteger();
+        String found = UserConfig.getConfig(player.getUniqueId(), "egghunt");
+        List<SWListInv.SWListEntry<Egg>> entries = EggHunt.getEggList().stream()
+                .map(egg -> {
+                    int index = atomicInteger.getAndIncrement();
+                    SWItem swItem = egg.getItem(player, found != null && found.length() > index && found.charAt(index) == '1');
+                    if (swItem == null) return null;
+                    return new SWListInv.SWListEntry<>(swItem, egg);
+                })
+                .sorted(Comparator.comparing(eggSWListEntry -> eggSWListEntry.getObject().getDifficulty()))
+                .filter(Objects::nonNull).collect(Collectors.toList());
+        SWListInv<Egg> inv = new SWListInv<>(player, "", entries, (clickType, egg) -> {
+        });
+        inv.open();
+    }
+}