180 lines
7.4 KiB
Java
180 lines
7.4 KiB
Java
package me.totalfreedom.totalfreedommod;
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import com.google.common.collect.Multimap;
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import io.papermc.lib.PaperLib;
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import java.util.Collection;
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import java.util.Map;
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import java.util.Objects;
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import org.bukkit.ChatColor;
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import org.bukkit.Location;
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import org.bukkit.Material;
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import org.bukkit.attribute.Attribute;
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import org.bukkit.attribute.AttributeModifier;
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import org.bukkit.entity.Player;
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import org.bukkit.event.EventHandler;
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import org.bukkit.event.EventPriority;
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import org.bukkit.event.player.PlayerItemHeldEvent;
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import org.bukkit.event.player.PlayerLoginEvent;
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import org.bukkit.event.player.PlayerMoveEvent;
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import org.bukkit.event.player.PlayerTeleportEvent;
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import org.bukkit.inventory.ItemStack;
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import org.bukkit.inventory.meta.ItemMeta;
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public class MovementValidator extends FreedomService
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{
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public static final int MAX_XYZ_COORD = 29999998;
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public static final int MAX_DISTANCE_TRAVELED = 100;
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@Override
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public void onStart()
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{
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}
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@Override
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public void onStop()
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{
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}
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@EventHandler(priority = EventPriority.HIGH)
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public void onPlayerTeleport(PlayerTeleportEvent event)
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{
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// Check absolute value to account for negatives
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if (Math.abs(Objects.requireNonNull(event.getTo()).getX()) >= MAX_XYZ_COORD || Math.abs(event.getTo().getZ()) >= MAX_XYZ_COORD || Math.abs(event.getTo().getY()) >= MAX_XYZ_COORD)
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{
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event.setCancelled(true); // illegal position, cancel it
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}
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}
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@EventHandler(priority = EventPriority.HIGH)
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public void onPlayerMove(PlayerMoveEvent event)
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{
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final Player player = event.getPlayer();
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Location from = event.getFrom();
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Location to = event.getTo();
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assert to != null;
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if (to.getX() >= from.getX() + MAX_DISTANCE_TRAVELED || to.getY() >= from.getY() + MAX_DISTANCE_TRAVELED || to.getZ() >= from.getZ() + MAX_DISTANCE_TRAVELED)
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{
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event.setCancelled(true);
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player.kickPlayer(ChatColor.RED + "You were moving too quickly!");
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}
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// Check absolute value to account for negatives
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if (Math.abs(event.getTo().getX()) >= MAX_XYZ_COORD || Math.abs(event.getTo().getZ()) >= MAX_XYZ_COORD || Math.abs(event.getTo().getY()) >= MAX_XYZ_COORD)
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{
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event.setCancelled(true);
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PaperLib.teleportAsync(player, player.getWorld().getSpawnLocation());
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}
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if (exploitItem(event.getPlayer().getInventory().getHelmet()))
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{
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event.getPlayer().getInventory().setHelmet(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your helmet slot.");
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event.setCancelled(true);
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}
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if (exploitItem(event.getPlayer().getInventory().getBoots()))
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{
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event.getPlayer().getInventory().setBoots(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your boots slot.");
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event.setCancelled(true);
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}
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if (exploitItem(event.getPlayer().getInventory().getLeggings()))
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{
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event.getPlayer().getInventory().setLeggings(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your leggings slot.");
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event.setCancelled(true);
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}
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if (exploitItem(event.getPlayer().getInventory().getChestplate()))
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{
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event.getPlayer().getInventory().setChestplate(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your chestplate slot.");
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event.setCancelled(true);
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}
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if (exploitItem(event.getPlayer().getInventory().getItemInMainHand()))
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{
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event.getPlayer().getInventory().setItemInMainHand(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your hand.");
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event.setCancelled(true);
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}
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if (exploitItem(event.getPlayer().getInventory().getItemInOffHand()))
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{
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event.getPlayer().getInventory().setItemInOffHand(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your offhand.");
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event.setCancelled(true);
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}
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}
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@EventHandler(priority = EventPriority.HIGH)
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public void onPlayerLogin(PlayerLoginEvent event)
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{
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final Player player = event.getPlayer();
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// Validate position
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if (Math.abs(player.getLocation().getX()) >= MAX_XYZ_COORD || Math.abs(player.getLocation().getZ()) >= MAX_XYZ_COORD || Math.abs(player.getLocation().getY()) >= MAX_XYZ_COORD)
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{
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PaperLib.teleportAsync(player, player.getWorld().getSpawnLocation()); // Illegal position, teleport to spawn
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}
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}
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@EventHandler
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public void onPlayerHoldItem(PlayerItemHeldEvent event)
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{
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if (exploitItem(event.getPlayer().getInventory().getItemInMainHand()))
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{
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event.getPlayer().getInventory().setItemInMainHand(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your hand.");
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}
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if (exploitItem(event.getPlayer().getInventory().getItemInOffHand()))
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{
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event.getPlayer().getInventory().setItemInOffHand(new ItemStack(Material.AIR));
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event.getPlayer().sendMessage(ChatColor.RED + "An item with both negative infinity and positive infinity attributes was cleared from your offhand.");
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}
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}
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private Boolean exploitItem(ItemStack item)
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{
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if (item == null)
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{
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return false;
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}
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ItemMeta meta = item.getItemMeta();
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if (meta != null)
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{
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Multimap<Attribute, AttributeModifier> attributes = meta.getAttributeModifiers();
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if (attributes != null)
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{
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Map<Attribute, Collection<AttributeModifier>> attrMap = attributes.asMap();
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// For every attribute...
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for (Attribute attr : attributes.keySet())
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{
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// Default values
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boolean posInf = false;
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boolean negInf = false;
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// For every AttributeModifier...
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for (AttributeModifier modifier : attrMap.get(attr))
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{
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// Are they ∞ or -∞?
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if (modifier.getAmount() == Double.POSITIVE_INFINITY)
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{
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posInf = true;
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}
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else if (modifier.getAmount() == Double.NEGATIVE_INFINITY)
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{
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negInf = true;
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}
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}
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// Are both values set as true?
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if (posInf && negInf)
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{
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return true;
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}
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}
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}
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}
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return false;
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}
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} |