Bukkit 1.20 CMI 玩家Shift+右键箱子显示HolographicDisplays文字

这是一个使用Java编写的Bukkit插件，可以实现玩家Shift+右键箱子时，在该箱子上方显示HolographicDisplays文字。当两个箱子合并后，文字将只显示一条，同时支持多个箱子。

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;

import com.gmail.filoghost.holographicdisplays.api.Hologram;
import com.gmail.filoghost.holographicdisplays.api.HologramsAPI;

public class ChestHologramPlugin extends JavaPlugin implements Listener {

    private Plugin holographicDisplaysPlugin;

    @Override
    public void onEnable() {
        if (!setupHolographicDisplays()) {
            getLogger().severe('HolographicDisplays plugin not found!');
            getServer().getPluginManager().disablePlugin(this);
            return;
        }

        getServer().getPluginManager().registerEvents(this, this);
    }

    private boolean setupHolographicDisplays() {
        holographicDisplaysPlugin = getServer().getPluginManager().getPlugin('HolographicDisplays');

        return holographicDisplaysPlugin != null;
    }

    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent event) {
        Player player = event.getPlayer();
        Action action = event.getAction();

        if (action == Action.RIGHT_CLICK_BLOCK && player.isSneaking()) {
            Block clickedBlock = event.getClickedBlock();

            if (clickedBlock != null && clickedBlock.getType() == Material.CHEST) {
                Block aboveBlock = clickedBlock.getRelative(BlockFace.UP);

                if (aboveBlock.getType() == Material.AIR) {
                    // Create a new hologram above the chest
                    Hologram hologram = HologramsAPI.createHologram(this, aboveBlock.getLocation().add(0.5, 1.0, 0.5));
                    hologram.appendTextLine(ChatColor.GREEN + 'Chest contents');

                    // Store the hologram in the chest's metadata
                    clickedBlock.setMetadata('hologram', new FixedMetadataValue(this, hologram));
                } else if (aboveBlock.getType() == Material.CHEST) {
                    // Get the hologram from the first chest
                    Hologram hologram = null;

                    if (clickedBlock.hasMetadata('hologram')) {
                        hologram = (Hologram) clickedBlock.getMetadata('hologram').get(0).value();
                    }

                    // Get the hologram from the second chest
                    if (aboveBlock.hasMetadata('hologram')) {
                        Hologram aboveHologram = (Hologram) aboveBlock.getMetadata('hologram').get(0).value();

                        if (hologram != null) {
                            // Merge the holograms
                            for (String line : aboveHologram.getLines()) {
                                hologram.appendTextLine(line);
                            }

                            // Remove the hologram from the second chest
                            aboveHologram.delete();
                        } else {
                            // Move the hologram to the second chest
                            aboveHologram.teleport(aboveBlock.getLocation().add(0.5, 1.0, 0.5));
                            aboveBlock.removeMetadata('hologram', this);
                            clickedBlock.setMetadata('hologram', new FixedMetadataValue(this, aboveHologram));
                        }
                    }
                }
            }
        }
    }
}

请确保已经安装了HolographicDisplays插件，并将该插件放置在Bukkit服务器的插件文件夹中。