Hello, my goal is if player A kills player B he get a gift (magiccoin). But if player A kills player B again within a hour then he don't get a coin. First after one hour but if player A kills player C then he get another one magiccoin. I tried early with Arraylist but it wasn't work. Now it works too not soo how I want. If someone can fix that please. Code (Java): package pl.tokzen.core.listeners; import java.util.HashMap; import org.bukkit.Bukkit; import org.bukkit.Material; import org.bukkit.enchantments.Enchantment; import org.bukkit.entity.Player; import org.bukkit.event.EventHandler; import org.bukkit.event.Listener; import org.bukkit.event.entity.PlayerDeathEvent; import org.bukkit.inventory.ItemStack; import pl.tokzen.core.Main; import pl.tokzen.core.data.Lang; import pl.tokzen.core.utils.ItemBuilder; import pl.tokzen.core.utils.Util; public class DeathListener implements Listener{ public static HashMap<Player, Player> map = new HashMap<>(); @EventHandler public void onDeath(PlayerDeathEvent e) { e.getEntity().getWorld().strikeLightningEffect(e.getEntity().getLocation()); if(e.getEntity().getKiller() instanceof Player) { Player killer = (Player)e.getEntity().getKiller(); Player victim = (Player)e.getEntity(); if((map.containsKey(killer)) && (map.containsValue(victim))) { killer.sendMessage(Util.fixColor("&8>> &4&oBlad: &cOstatnio zabiles tego samego gracza! Nagroda nie zostala przyznana.")); } else { killer.sendMessage(Util.fixColor("&8>> &7Zabiles &f" + victim.getName() + " &7i dostales nagrode! &fx1 " + Lang.ITEMS_MAGICCOIN)); ItemStack coin = new ItemBuilder(Material.DOUBLE_PLANT, 1).setName(Util.fixColor(Lang.ITEMS_MAGICCOIN)).addEnchant(Enchantment.DURABILITY, 10).toItemStack(); killer.getInventory().addItem(coin); killer.updateInventory(); map.put(killer, victim); Bukkit.getServer().getScheduler().scheduleSyncDelayedTask(Main.getPlugin(), new Runnable() { @Override public void run() { if((map.containsKey(killer)) && (map.containsValue(victim))) { map.remove(killer, victim); } } }, 3600*20); } } } }
Ok. If you understood java properly you should be able to write a class that tracks every data you want. For example: we have a class called PlayerData That just maintains a Code (Text): Map<UUID, Long> killedPlayers; where the key (uuid) is the players ID and the value (long) is the unix time in ms (the time you get by calling System.currentTimeMillis()) Now you maintain a Code (Text): Map<Player, PlayerData> playerDataMap; where you put every player in when he joins and take him out when he leaves. Now if a player kills another then you can simply get the PlayerData from the map then check if he has killed a player with this UUID. If yes get the long and check the time difference to currentTimeMillis() PS If you want a simple solution: Use a Table<UUID, UUID, Long> You can figure out how to use it here https://www.baeldung.com/guava-table guava is already part of spigot so you can skip all the importing. PPS watch some more Java tutorials
