650 lines
29 KiB
Java
650 lines
29 KiB
Java
package de.epiceric.shopchest.utils;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Base64;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import java.util.Set;
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import java.util.UUID;
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import java.util.concurrent.atomic.AtomicInteger;
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import org.bukkit.Bukkit;
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import org.bukkit.Location;
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import org.bukkit.Material;
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import org.bukkit.block.Chest;
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import org.bukkit.block.DoubleChest;
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import org.bukkit.configuration.InvalidConfigurationException;
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import org.bukkit.configuration.file.YamlConfiguration;
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import org.bukkit.entity.EntityType;
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import org.bukkit.entity.Player;
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import org.bukkit.inventory.Inventory;
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import org.bukkit.inventory.InventoryHolder;
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import org.bukkit.inventory.ItemStack;
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import org.bukkit.inventory.PlayerInventory;
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import org.bukkit.inventory.meta.BookMeta;
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import org.bukkit.inventory.meta.ItemMeta;
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import org.bukkit.util.Vector;
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import org.inventivetalent.reflection.resolver.FieldResolver;
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import org.inventivetalent.reflection.resolver.minecraft.NMSClassResolver;
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import de.epiceric.shopchest.ShopChest;
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import de.epiceric.shopchest.config.Placeholder;
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import de.epiceric.shopchest.language.LanguageUtils;
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import de.epiceric.shopchest.language.Message;
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import de.epiceric.shopchest.language.Replacement;
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import de.epiceric.shopchest.nms.CustomBookMeta;
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import de.epiceric.shopchest.nms.JsonBuilder;
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import de.epiceric.shopchest.shop.Shop;
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public class Utils {
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static NMSClassResolver nmsClassResolver = new NMSClassResolver();
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static Class<?> entityClass = nmsClassResolver.resolveSilent("world.entity.Entity");
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static Class<?> entityArmorStandClass = nmsClassResolver.resolveSilent("world.entity.decoration.EntityArmorStand");
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static Class<?> entityItemClass = nmsClassResolver.resolveSilent("world.entity.item.EntityItem");
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static Class<?> dataWatcherClass = nmsClassResolver.resolveSilent("network.syncher.DataWatcher");
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static Class<?> dataWatcherObjectClass = nmsClassResolver.resolveSilent("network.syncher.DataWatcherObject");
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static Class<?> chatSerializerClass = nmsClassResolver.resolveSilent("ChatSerializer", "network.chat.IChatBaseComponent$ChatSerializer");
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private Utils() {}
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/**
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* Check if two items are similar to each other
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* @param itemStack1 The first item
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* @param itemStack2 The second item
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* @return {@code true} if the given items are similar or {@code false} if not
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*/
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public static boolean isItemSimilar(ItemStack itemStack1, ItemStack itemStack2) {
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if (itemStack1 == null || itemStack2 == null) {
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return false;
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}
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ItemMeta itemMeta1 = itemStack1.getItemMeta();
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ItemMeta itemMeta2 = itemStack2.getItemMeta();
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if (itemMeta1 instanceof BookMeta && itemMeta2 instanceof BookMeta) {
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BookMeta bookMeta1 = (BookMeta) itemStack1.getItemMeta();
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BookMeta bookMeta2 = (BookMeta) itemStack2.getItemMeta();
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if ((getMajorVersion() == 9 && getRevision() == 1) || getMajorVersion() == 8) {
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CustomBookMeta.Generation generation1 = CustomBookMeta.getGeneration(itemStack1);
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CustomBookMeta.Generation generation2 = CustomBookMeta.getGeneration(itemStack2);
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if (generation1 == null) CustomBookMeta.setGeneration(itemStack1, CustomBookMeta.Generation.ORIGINAL);
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if (generation2 == null) CustomBookMeta.setGeneration(itemStack2, CustomBookMeta.Generation.ORIGINAL);
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} else {
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if (bookMeta1.getGeneration() == null) bookMeta1.setGeneration(BookMeta.Generation.ORIGINAL);
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if (bookMeta2.getGeneration() == null) bookMeta2.setGeneration(BookMeta.Generation.ORIGINAL);
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}
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itemStack1.setItemMeta(bookMeta1);
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itemStack2.setItemMeta(bookMeta2);
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itemStack1 = decode(encode(itemStack1));
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itemStack2 = decode(encode(itemStack2));
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}
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return itemStack1.isSimilar(itemStack2);
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}
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/**
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* Gets the amount of items in an inventory
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*
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* @param inventory The inventory, in which the items are counted
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* @param itemStack The items to count
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* @return Amount of given items in the given inventory
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*/
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public static int getAmount(Inventory inventory, ItemStack itemStack) {
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int amount = 0;
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ArrayList<ItemStack> inventoryItems = new ArrayList<>();
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if (inventory instanceof PlayerInventory) {
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for (int i = 0; i < 37; i++) {
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if (i == 36) {
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if (getMajorVersion() < 9) {
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break;
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}
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i = 40;
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}
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inventoryItems.add(inventory.getItem(i));
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}
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} else {
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for (int i = 0; i < inventory.getSize(); i++) {
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inventoryItems.add(inventory.getItem(i));
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}
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}
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for (ItemStack item : inventoryItems) {
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if (isItemSimilar(item, itemStack)) {
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amount += item.getAmount();
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}
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}
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return amount;
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}
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/**
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* Get the amount of the given item, that fits in the given inventory
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*
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* @param inventory Inventory, where to search for free space
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* @param itemStack Item, of which the amount that fits in the inventory should be returned
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* @return Amount of the given item, that fits in the given inventory
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*/
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public static int getFreeSpaceForItem(Inventory inventory, ItemStack itemStack) {
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HashMap<Integer, Integer> slotFree = new HashMap<>();
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if (inventory instanceof PlayerInventory) {
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for (int i = 0; i < 37; i++) {
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if (i == 36) {
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if (getMajorVersion() < 9) {
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break;
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}
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i = 40;
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}
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ItemStack item = inventory.getItem(i);
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if (item == null || item.getType() == Material.AIR) {
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slotFree.put(i, itemStack.getMaxStackSize());
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} else {
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if (isItemSimilar(item, itemStack)) {
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int amountInSlot = item.getAmount();
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int amountToFullStack = itemStack.getMaxStackSize() - amountInSlot;
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slotFree.put(i, amountToFullStack);
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}
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}
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}
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} else {
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for (int i = 0; i < inventory.getSize(); i++) {
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ItemStack item = inventory.getItem(i);
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if (item == null || item.getType() == Material.AIR) {
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slotFree.put(i, itemStack.getMaxStackSize());
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} else {
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if (isItemSimilar(item, itemStack)) {
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int amountInSlot = item.getAmount();
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int amountToFullStack = itemStack.getMaxStackSize() - amountInSlot;
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slotFree.put(i, amountToFullStack);
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}
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}
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}
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}
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int freeAmount = 0;
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for (int value : slotFree.values()) {
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freeAmount += value;
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}
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return freeAmount;
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}
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/**
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* @param p Player whose item in his main hand should be returned
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* @return {@link ItemStack} in his main hand, or {@code null} if he doesn't hold one
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*/
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public static ItemStack getItemInMainHand(Player p) {
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if (getMajorVersion() < 9) {
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if (p.getItemInHand().getType() == Material.AIR)
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return null;
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else
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return p.getItemInHand();
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}
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if (p.getInventory().getItemInMainHand().getType() == Material.AIR)
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return null;
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else
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return p.getInventory().getItemInMainHand();
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}
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/**
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* @param p Player whose item in his off hand should be returned
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* @return {@link ItemStack} in his off hand, or {@code null} if he doesn't hold one or the server version is below 1.9
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*/
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public static ItemStack getItemInOffHand(Player p) {
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if (getMajorVersion() < 9)
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return null;
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else if (p.getInventory().getItemInOffHand().getType() == Material.AIR)
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return null;
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else
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return p.getInventory().getItemInOffHand();
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}
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/**
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* @param p Player whose item in his hand should be returned
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* @return Item in his main hand, or the item in his off if he doesn't have one in this main hand, or {@code null}
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* if he doesn't have one in both hands
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*/
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public static ItemStack getPreferredItemInHand(Player p) {
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if (getMajorVersion() < 9)
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return getItemInMainHand(p);
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else if (getItemInMainHand(p) != null)
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return getItemInMainHand(p);
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else
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return getItemInOffHand(p);
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}
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/**
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* @param p Player to check if he has an axe in one of his hands
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* @return Whether a player has an axe in one of his hands
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*/
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public static boolean hasAxeInHand(Player p) {
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List<String> axes;
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if (Utils.getMajorVersion() < 13)
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axes = Arrays.asList("WOOD_AXE", "STONE_AXE", "IRON_AXE", "GOLD_AXE", "DIAMOND_AXE");
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else
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axes = Arrays.asList("WOODEN_AXE", "STONE_AXE", "IRON_AXE", "GOLDEN_AXE", "DIAMOND_AXE");
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ItemStack item = getItemInMainHand(p);
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if (item == null || !axes.contains(item.getType().toString())) {
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item = getItemInOffHand(p);
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}
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return item != null && axes.contains(item.getType().toString());
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}
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/**
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* <p>Check if a player is allowed to create a shop that sells or buys the given item.</p>
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* @param player Player to check
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* @param item Item to be sold or bought
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* @param buy Whether buying should be enabled
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* @param sell Whether selling should be enabled
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* @return Whether the player is allowed
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*/
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public static boolean hasPermissionToCreateShop(Player player, ItemStack item, boolean buy, boolean sell) {
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if (hasPermissionToCreateShop(player, item, Permissions.CREATE)) {
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return true;
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} else if (!sell && buy && hasPermissionToCreateShop(player, item,Permissions.CREATE_BUY)) {
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return true;
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} else if (!buy && sell && hasPermissionToCreateShop(player, item, Permissions.CREATE_SELL)) {
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return true;
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} else if (buy && sell && hasPermissionToCreateShop(player, item, Permissions.CREATE_BUY, Permissions.CREATE_SELL)) {
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return true;
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}
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return false;
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}
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private static boolean hasPermissionToCreateShop(Player player, ItemStack item, String... permissions) {
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for (String permission : permissions) {
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boolean b1 = false;
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boolean b2 = false;
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boolean b3 = false;
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if (player.hasPermission(permission)) {
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b1 = true;
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}
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if (item != null) {
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if (item.getDurability() == 0) {
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String perm1 = permission + "." + item.getType().toString();
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String perm2 = permission + "." + item.getType().toString() + ".0";
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if (player.hasPermission(perm1) || player.hasPermission(perm2)) {
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b2 = true;
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}
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}
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if (player.hasPermission(permission + "." + item.getType().toString() + "." + item.getDurability())) {
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b3 = true;
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}
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}
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if (!(b1 || b2 || b3)) {
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return false;
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}
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}
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return true;
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}
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/**
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* Get a set for the location(s) of the shop's chest(s)
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* @param shop The shop
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* @return A set of 1 or 2 locations
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*/
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public static Set<Location> getChestLocations(Shop shop) {
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Set<Location> chestLocations = new HashSet<>();
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InventoryHolder ih = shop.getInventoryHolder();
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if (ih instanceof DoubleChest) {
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DoubleChest dc = (DoubleChest) ih;
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chestLocations.add(((Chest) dc.getLeftSide()).getLocation());
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chestLocations.add(((Chest) dc.getRightSide()).getLocation());
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} else {
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chestLocations.add(shop.getLocation());
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}
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return chestLocations;
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}
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/**
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* Send a clickable update notification to the given player.
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* @param plugin An instance of the {@link ShopChest} plugin
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* @param p The player to receive the notification
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*/
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public static void sendUpdateMessage(ShopChest plugin, Player p) {
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JsonBuilder jb = new JsonBuilder(plugin);
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Map<String, JsonBuilder.Part> hoverEvent = new HashMap<>();
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hoverEvent.put("action", new JsonBuilder.Part("show_text"));
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hoverEvent.put("value", new JsonBuilder.Part(LanguageUtils.getMessage(Message.UPDATE_CLICK_TO_DOWNLOAD)));
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Map<String, JsonBuilder.Part> clickEvent = new HashMap<>();
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clickEvent.put("action", new JsonBuilder.Part("open_url"));
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clickEvent.put("value", new JsonBuilder.Part(plugin.getDownloadLink()));
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JsonBuilder.PartMap rootPart = JsonBuilder.parse(LanguageUtils.getMessage(Message.UPDATE_AVAILABLE,
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new Replacement(Placeholder.VERSION, plugin.getLatestVersion()))).toMap();
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rootPart.setValue("hoverEvent", new JsonBuilder.PartMap(hoverEvent));
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rootPart.setValue("clickEvent", new JsonBuilder.PartMap(clickEvent));
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jb.setRootPart(rootPart);
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jb.sendJson(p);
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}
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/**
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* Create a NMS data watcher object to send via a {@code PacketPlayOutEntityMetadata} packet.
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* Gravity will be disabled and the custom name will be displayed if available.
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* @param customName Custom Name of the entity or {@code null}
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* @param nmsItemStack NMS ItemStack or {@code null} if armor stand
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*/
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public static Object createDataWatcher(String customName, Object nmsItemStack) {
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String version = getServerVersion();
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int majorVersion = getMajorVersion();
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try {
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byte entityFlags = nmsItemStack == null ? (byte) 0b100000 : 0; // invisible if armor stand
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byte armorStandFlags = nmsItemStack == null ? (byte) 0b10000 : 0; // marker (since 1.8_R2)
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Object dataWatcher = dataWatcherClass.getConstructor(entityClass).newInstance((Object) null);
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if (majorVersion < 9) {
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if (getRevision() == 1) armorStandFlags = 0; // Marker not supported on 1.8_R1
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Method a = dataWatcherClass.getMethod("a", int.class, Object.class);
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a.invoke(dataWatcher, 0, entityFlags); // flags
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a.invoke(dataWatcher, 1, (short) 300); // air ticks (?)
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a.invoke(dataWatcher, 3, (byte) (customName != null ? 1 : 0)); // custom name visible
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a.invoke(dataWatcher, 2, customName != null ? customName : ""); // custom name
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a.invoke(dataWatcher, 4, (byte) 1); // silent
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a.invoke(dataWatcher, 10, nmsItemStack == null ? armorStandFlags : nmsItemStack); // item / armor stand flags
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} else {
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Method register = dataWatcherClass.getMethod("register", dataWatcherObjectClass, Object.class);
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String[] dataWatcherObjectFieldNames;
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if ("v1_9_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"ax", "ay", "aA", "az", "aB", null, "c", "a"};
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} else if ("v1_9_R2".equals(version)){
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dataWatcherObjectFieldNames = new String[] {"ay", "az", "aB", "aA", "aC", null, "c", "a"};
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} else if ("v1_10_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"aa", "az", "aB", "aA", "aC", "aD", "c", "a"};
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} else if ("v1_11_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"Z", "az", "aB", "aA", "aC", "aD", "c", "a"};
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} else if ("v1_12_R1".equals(version) || "v1_12_R2".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"Z", "aA", "aC", "aB", "aD", "aE", "c", "a"};
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} else if ("v1_13_R1".equals(version) || "v1_13_R2".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"ac", "aD", "aF", "aE", "aG", "aH", "b", "a"};
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} else if ("v1_14_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"W", "AIR_TICKS", "aA", "az", "aB", "aC", "ITEM", "b"};
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} else if ("v1_15_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"T", "AIR_TICKS", "aA", "az", "aB", "aC", "ITEM", "b"};
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} else if ("v1_16_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"T", "AIR_TICKS", "ay", "ax", "az", "aA", "ITEM", "b"};
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} else if ("v1_16_R2".equals(version) || "v1_16_R3".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"S", "AIR_TICKS", "ar", "aq", "as", "at", "ITEM", "b"};
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} else if ("v1_17_R1".equals(version)) {
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dataWatcherObjectFieldNames = new String[] {"Z", "aI", "aK", "aJ", "aL", "aM", "c", "bG"};
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} else {
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return null;
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}
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Field fEntityFlags = entityClass.getDeclaredField(dataWatcherObjectFieldNames[0]);
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Field fAirTicks = entityClass.getDeclaredField(dataWatcherObjectFieldNames[1]);
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Field fNameVisible = entityClass.getDeclaredField(dataWatcherObjectFieldNames[2]);
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Field fCustomName = entityClass.getDeclaredField(dataWatcherObjectFieldNames[3]);
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Field fSilent = entityClass.getDeclaredField(dataWatcherObjectFieldNames[4]);
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Field fNoGravity = majorVersion >= 10 ? entityClass.getDeclaredField(dataWatcherObjectFieldNames[5]) : null;
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Field fItem = entityItemClass.getDeclaredField(dataWatcherObjectFieldNames[6]);
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Field fArmorStandFlags = entityArmorStandClass.getDeclaredField(dataWatcherObjectFieldNames[7]);
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fEntityFlags.setAccessible(true);
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fAirTicks.setAccessible(true);
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fNameVisible.setAccessible(true);
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fCustomName.setAccessible(true);
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fSilent.setAccessible(true);
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if (majorVersion >= 10) fNoGravity.setAccessible(true);
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fItem.setAccessible(true);
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fArmorStandFlags.setAccessible(true);
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register.invoke(dataWatcher, fEntityFlags.get(null), entityFlags);
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register.invoke(dataWatcher, fAirTicks.get(null), 300);
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register.invoke(dataWatcher, fNameVisible.get(null), customName != null);
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register.invoke(dataWatcher, fSilent.get(null), true);
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if (majorVersion < 13) register.invoke(dataWatcher, fCustomName.get(null), customName != null ? customName : "");
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if (nmsItemStack != null) {
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register.invoke(dataWatcher, fItem.get(null), majorVersion < 11 ? com.google.common.base.Optional.of(nmsItemStack) : nmsItemStack);
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} else {
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register.invoke(dataWatcher, fArmorStandFlags.get(null), armorStandFlags);
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}
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if (majorVersion >= 10) {
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register.invoke(dataWatcher, fNoGravity.get(null), true);
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if (majorVersion >= 13) {
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if (customName != null) {
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Object iChatBaseComponent = chatSerializerClass.getMethod("a", String.class).invoke(null, JsonBuilder.parse(customName).toString());
|
|
register.invoke(dataWatcher, fCustomName.get(null), Optional.of(iChatBaseComponent));
|
|
} else {
|
|
register.invoke(dataWatcher, fCustomName.get(null), Optional.empty());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return dataWatcher;
|
|
} catch (InstantiationException | InvocationTargetException | NoSuchFieldException | IllegalAccessException | NoSuchMethodException e) {
|
|
ShopChest.getInstance().getLogger().severe("Failed to create data watcher!");
|
|
ShopChest.getInstance().debug("Failed to create data watcher");
|
|
ShopChest.getInstance().debug(e);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Get a free entity ID for use in {@link #createPacketSpawnEntity(ShopChest, int, UUID, Location, Vector, EntityType)}
|
|
*
|
|
* @return The id or {@code -1} if a free entity ID could not be retrieved.
|
|
*/
|
|
public static int getFreeEntityId() {
|
|
try {
|
|
Field entityCountField = new FieldResolver(entityClass).resolve("entityCount", "b");
|
|
entityCountField.setAccessible(true);
|
|
if (entityCountField.getType() == int.class) {
|
|
int id = entityCountField.getInt(null);
|
|
entityCountField.setInt(null, id+1);
|
|
return id;
|
|
} else if (entityCountField.getType() == AtomicInteger.class) {
|
|
return ((AtomicInteger) entityCountField.get(null)).incrementAndGet();
|
|
}
|
|
|
|
return -1;
|
|
} catch (Exception e) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create a {@code PacketPlayOutSpawnEntity} object.
|
|
* Only {@link EntityType#ARMOR_STAND} and {@link EntityType#DROPPED_ITEM} are supported!
|
|
*/
|
|
public static Object createPacketSpawnEntity(ShopChest plugin, int id, UUID uuid, Location loc, EntityType type) {
|
|
try {
|
|
Class<?> packetPlayOutSpawnEntityClass = nmsClassResolver.resolveSilent("network.protocol.game.PacketPlayOutSpawnEntity");
|
|
Class<?> entityTypesClass = nmsClassResolver.resolveSilent("world.entity.EntityTypes");
|
|
Class<?> vec3dClass = nmsClassResolver.resolveSilent("world.phys.Vec3D");
|
|
|
|
boolean isPre9 = getMajorVersion() < 9;
|
|
boolean isPre14 = getMajorVersion() < 14;
|
|
|
|
double y = loc.getY();
|
|
if (type == EntityType.ARMOR_STAND && !getServerVersion().equals("v1_8_R1")) {
|
|
// Marker armor stand => lift by normal armor stand height
|
|
y += 1.975;
|
|
}
|
|
|
|
if (getMajorVersion() >= 17) {
|
|
// Empty packet constructor does not exist anymore in 1.17+
|
|
Constructor<?> c = packetPlayOutSpawnEntityClass.getConstructor(int.class, UUID.class, double.class, double.class, double.class,
|
|
float.class, float.class, entityTypesClass, int.class, vec3dClass);
|
|
|
|
Object vec3d = vec3dClass.getField("a").get(null);
|
|
Object entityType = entityTypesClass.getField(type == EntityType.ARMOR_STAND ? "c" : "Q").get(null);
|
|
|
|
return c.newInstance(id, uuid, loc.getX(), y, loc.getZ(), 0f, 0f, entityType, 0, vec3d);
|
|
}
|
|
|
|
Object packet = packetPlayOutSpawnEntityClass.getConstructor().newInstance();
|
|
|
|
Field[] fields = new Field[12];
|
|
fields[0] = packetPlayOutSpawnEntityClass.getDeclaredField("a"); // ID
|
|
fields[1] = packetPlayOutSpawnEntityClass.getDeclaredField("b"); // UUID (Only 1.9+)
|
|
fields[2] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "b" : "c"); // Loc X
|
|
fields[3] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "c" : "d"); // Loc Y
|
|
fields[4] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "d" : "e"); // Loc Z
|
|
fields[5] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "e" : "f"); // Mot X
|
|
fields[6] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "f" : "g"); // Mot Y
|
|
fields[7] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "g" : "h"); // Mot Z
|
|
fields[8] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "h" : "i"); // Pitch
|
|
fields[9] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "i" : "j"); // Yaw
|
|
fields[10] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "j" : "k"); // Type
|
|
fields[11] = packetPlayOutSpawnEntityClass.getDeclaredField(isPre9 ? "k" : "l"); // Data
|
|
|
|
for (Field field : fields) {
|
|
field.setAccessible(true);
|
|
}
|
|
|
|
Object entityType = null;
|
|
if (!isPre14) {
|
|
entityType = entityTypesClass.getField(type == EntityType.ARMOR_STAND ? "ARMOR_STAND" : "ITEM").get(null);
|
|
}
|
|
|
|
fields[0].set(packet, id);
|
|
if (!isPre9) fields[1].set(packet, uuid);
|
|
if (isPre9) {
|
|
fields[2].set(packet, (int)(loc.getX() * 32));
|
|
fields[3].set(packet, (int)(y * 32));
|
|
fields[4].set(packet, (int)(loc.getZ() * 32));
|
|
} else {
|
|
fields[2].set(packet, loc.getX());
|
|
fields[3].set(packet, y);
|
|
fields[4].set(packet, loc.getZ());
|
|
}
|
|
fields[5].set(packet, 0);
|
|
fields[6].set(packet, 0);
|
|
fields[7].set(packet, 0);
|
|
fields[8].set(packet, 0);
|
|
fields[9].set(packet, 0);
|
|
if (isPre14) fields[10].set(packet, type == EntityType.ARMOR_STAND ? 78 : 2);
|
|
else fields[10].set(packet, entityType);
|
|
fields[11].set(packet, 0);
|
|
|
|
return packet;
|
|
} catch (NoSuchMethodException | NoSuchFieldException | IllegalAccessException | InvocationTargetException | InstantiationException e) {
|
|
plugin.getLogger().severe("Failed to create packet to spawn entity!");
|
|
plugin.debug("Failed to create packet to spawn entity!");
|
|
plugin.debug(e);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Send a packet to a player
|
|
* @param plugin An instance of the {@link ShopChest} plugin
|
|
* @param packet Packet to send
|
|
* @param player Player to which the packet should be sent
|
|
* @return {@code true} if the packet was sent, or {@code false} if an exception was thrown
|
|
*/
|
|
public static boolean sendPacket(ShopChest plugin, Object packet, Player player) {
|
|
try {
|
|
if (packet == null) {
|
|
plugin.debug("Failed to send packet: Packet is null");
|
|
return false;
|
|
}
|
|
|
|
Class<?> packetClass = nmsClassResolver.resolveSilent("network.protocol.Packet");
|
|
if (packetClass == null) {
|
|
plugin.debug("Failed to send packet: Could not find Packet class");
|
|
return false;
|
|
}
|
|
|
|
Object nmsPlayer = player.getClass().getMethod("getHandle").invoke(player);
|
|
Field fConnection = (new FieldResolver(nmsPlayer.getClass())).resolve("playerConnection", "b");
|
|
Object playerConnection = fConnection.get(nmsPlayer);
|
|
|
|
playerConnection.getClass().getMethod("sendPacket", packetClass).invoke(playerConnection, packet);
|
|
|
|
return true;
|
|
} catch (NoSuchMethodException | NoSuchFieldException | IllegalAccessException | InvocationTargetException e) {
|
|
plugin.getLogger().severe("Failed to send packet " + packet.getClass().getName());
|
|
plugin.debug("Failed to send packet " + packet.getClass().getName());
|
|
plugin.debug(e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return The current server version with revision number (e.g. v1_9_R2, v1_10_R1)
|
|
*/
|
|
public static String getServerVersion() {
|
|
String packageName = Bukkit.getServer().getClass().getPackage().getName();
|
|
|
|
return packageName.substring(packageName.lastIndexOf('.') + 1);
|
|
}
|
|
|
|
/**
|
|
* @return The revision of the current server version (e.g. <i>2</i> for v1_9_R2, <i>1</i> for v1_10_R1)
|
|
*/
|
|
public static int getRevision() {
|
|
return Integer.parseInt(getServerVersion().substring(getServerVersion().length() - 1));
|
|
}
|
|
|
|
/**
|
|
* @return The major version of the server (e.g. <i>9</i> for 1.9.2, <i>10</i> for 1.10)
|
|
*/
|
|
public static int getMajorVersion() {
|
|
return Integer.parseInt(getServerVersion().split("_")[1]);
|
|
}
|
|
|
|
/**
|
|
* Encodes an {@link ItemStack} in a Base64 String
|
|
* @param itemStack {@link ItemStack} to encode
|
|
* @return Base64 encoded String
|
|
*/
|
|
public static String encode(ItemStack itemStack) {
|
|
YamlConfiguration config = new YamlConfiguration();
|
|
config.set("i", itemStack);
|
|
return Base64.getEncoder().encodeToString(config.saveToString().getBytes(StandardCharsets.UTF_8));
|
|
}
|
|
|
|
/**
|
|
* Decodes an {@link ItemStack} from a Base64 String
|
|
* @param string Base64 encoded String to decode
|
|
* @return Decoded {@link ItemStack}
|
|
*/
|
|
public static ItemStack decode(String string) {
|
|
YamlConfiguration config = new YamlConfiguration();
|
|
try {
|
|
config.loadFromString(new String(Base64.getDecoder().decode(string), StandardCharsets.UTF_8));
|
|
} catch (IllegalArgumentException | InvalidConfigurationException e) {
|
|
e.printStackTrace();
|
|
return null;
|
|
}
|
|
return config.getItemStack("i", null);
|
|
}
|
|
|
|
|
|
}
|