Main.java

package me.szczurekyt.magnoliechowany;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scoreboard.Scoreboard;
import org.bukkit.scoreboard.Team;

import java.util.*;


public final class Main extends JavaPlugin {

    public Game game; // Currently, running game
    public Map<String, GameMap> maps = new HashMap<>();
    public Map<Player, Game> gameCreation = new HashMap<>();
    public List<Player> waitingForInput = new ArrayList<>();
    public Scoreboard scoreboard;


    @Override
    public void onEnable() {
        // Plugin startup logic

        // Register commands and events
        this.getCommand("chowany").setExecutor(new ChowanyCMD(this));
        this.getServer().getPluginManager().registerEvents(new DeathListener(this), this);
        this.getServer().getPluginManager().registerEvents(new InventoryListener(this), this);
        this.getServer().getPluginManager().registerEvents(new ChatListener(this), this);

        // create scoreboard
        Bukkit.getScoreboardManager().getMainScoreboard();

        // Create no tag team
        scoreboard.registerNewTeam("NoTag").setOption(Team.Option.NAME_TAG_VISIBILITY, Team.OptionStatus.NEVER);

        // Save default config
        this.saveDefaultConfig();

        // If there is data to load than load it
        if (this.getConfig().contains("maps")) {
            loadMaps();
        }

        // Remove old data
        this.getConfig().set("maps", null);
        this.saveConfig();

    }

    @Override
    public void onDisable() {
        // Plugin shutdown logic

        if (!(maps.isEmpty())) {
            // There are maps to save
            saveMaps();
        }
    }

    public void saveMaps() {
        for (Map.Entry<String, GameMap> map: this.maps.entrySet()) {
            this.getConfig().set("maps." + map.getKey() + ".name", map.getValue().name);
            this.getConfig().set("maps." + map.getKey() + ".icon", map.getValue().icon);
            this.getConfig().set("maps." + map.getKey() + ".lobby", map.getValue().lobbySpawn);
            this.getConfig().set("maps." + map.getKey() + ".spectator", map.getValue().spectatorSpawn);
            this.getConfig().set("maps." + map.getKey() + ".seeker", map.getValue().seekerSpawn);
            this.getConfig().set("maps." + map.getKey() + ".start", map.getValue().startSpawn);
        }
        this.saveConfig();
    }

    public void loadMaps() {
        // Used to load all maps from config

        for (String key: this.getConfig().getConfigurationSection("maps").getKeys(false)) {
            // Iterate over all saved maps

            // Recreate the GameMap
            String name = this.getConfig().getString("maps." + key + ".name");
            GameMap map = new GameMap(name);
            map.icon = this.getConfig().getItemStack("maps." + key + ".icon");
            map.lobbySpawn = this.getConfig().getLocation("maps." + key + ".lobby");
            map.spectatorSpawn = this.getConfig().getLocation("maps." + key + ".spectator");
            map.seekerSpawn = this.getConfig().getLocation("maps." + key + ".seeker");
            map.startSpawn = this.getConfig().getLocation("maps." + key + ".start");

            // Put map in the hashmap
            this.maps.put(name, map);
        }

    }
}