SignTeleporter

package ST;

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

public class SignTeleport extends JavaPlugin implements Listener{
    @Override
    public void onEnable(){
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }
    @Override
    public void onDisable(){

    }

    @EventHandler
    public void pressOnSign(PlayerInteractEvent e){
        Player p = e.getPlayer();
        Block clickBlock = e.getClickedBlock();
        Sign sign = (Sign)e.getClickedBlock().getState();
        if(e.getAction() == Action.RIGHT_CLICK_AIR || e.getAction() == Action.RIGHT_CLICK_BLOCK) {
             if(clickBlock.getType() == org.bukkit.Material.WALL_SIGN) {
                  if(canMakeTp(sign, p)){
                      double foodLevel=p.getFoodLevel();
                      int   range=Math.abs(Integer.parseInt(sign.getLine(2))-sign.getY()),
                            delFoodLevel=((range/13) + 1);
                      if(delFoodLevel>foodLevel){
                          p.sendMessage("У тебя недостаточно сытости для телепортации");
                      }else{
                          p.setFoodLevel((int)(foodLevel - delFoodLevel)); //можно заменить снятие голода на что-то другое
                          p.teleport(new Location(sign.getWorld(),sign.getX()+0.5,Integer.parseInt(sign.getLine(2)),sign.getZ()+0.5));
                      }
                  }
             }
        }
    }

    public static Material whichBlockPlacedSign(Sign s){
        Location l=s.getLocation();
        Block b;
        switch(s.getData().getData()){
        case 2:
            l.setZ(l.getZ()+1);
            b = s.getWorld().getBlockAt(l);
            return b.getType();
        case 4:
            l.setX(l.getX()+1);
            b = s.getWorld().getBlockAt(l);
            return b.getType();
        case 3:
            l.setZ(l.getZ()-1);
            b = s.getWorld().getBlockAt(l);
            return b.getType();
        case 5:
            l.setX(l.getX()-1);
            b = s.getWorld().getBlockAt(l);
            return b.getType();
        default: return Material.AIR;
        }
    }

    public boolean canMakeTp(Sign s, Player p){
        Location l=s.getLocation();
        int num;
        // возможно мир называется по другому
        if(!l.getWorld().getName().equals("world")){
            return false;
        }

        if(!s.getLine(1).matches("ALL")&&!s.getLine(1).matches(p.getName()))
            return false;

        try{
            num=Integer.parseInt(s.getLine(2));
        }catch(NumberFormatException e){
            return false;
        }
        if(!whichBlockPlacedSign(s).equals(Material.DIAMOND_BLOCK))
            return false;
        Block   b0=otherBlock(l.getBlock(), num-1),
                b1=otherBlock(l.getBlock(), num),
                b2=otherBlock(l.getBlock(), num+1);
        if(num<=255 && num>=5){
            switch(s.getLine(0)){
            case "UP":
            case "DOWN":
                if(!b1.getType().equals(Material.AIR) || b0.getType().equals(Material.AIR) || b0.isLiquid() || !b2.getType().equals(Material.AIR))
                    return false;
                break;
            default: return false;
            }
        }
        return true;
    }

    public Block otherBlock(Block b, int y){
        return b.getWorld().getBlockAt(b.getX(),y,b.getZ());
    }
}