OnPlayerMove Enable and Disable

How can I make if a player puts /grass then it will do and they can activate and deactivate

Code:

package grass.LBJDaKing23.replace;

import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.event.player.PlayerListener;
import org.bukkit.event.player.PlayerMoveEvent;

public class listener extends PlayerListener {
    public static replace plugin;
    listener(replace instance) {
        plugin = instance;
    }
 
    public void onPlayerMove(PlayerMoveEvent event) {
        Block block = event.getPlayer().getWorld().getBlockAt(event.getPlayer().getLocation().getBlockX(), event.getPlayer().getLocation().getBlockY() - 1, event.getPlayer().getLocation().getBlockZ());
        if ((block.getType() == Material.DIRT)){
            block.setType(Material.GRASS);
        }
    }
}

 

Put in a boolean variable to enable / disable it, and set it from the command handler to either true or false. Or even better make a List containing all players that have enabled the command and make your method from the listener check if the person who moved is in that list.

 

Code:

        Block block = event.getPlayer().getWorld().getBlockAt(event.getPlayer().getLocation().getBlockX(), event.getPlayer().getLocation().getBlockY() - 1, event.getPlayer().getLocation().getBlockZ());

Can be simplified to a getRelative call.

 

I suggest a HashSet.

 

I got it by watching a tutorial

Code:

package grass.LBJDaKing23.replace;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Logger;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Event;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class replace extends JavaPlugin {
Logger log = Logger.getLogger("Minecraft");
private final listener playerListener = new listener(this);
private Set<Player> grass = new HashSet<Player>();

    public void onDisable() {
        log.info("Dirt Replacement Enabled!");
    }

    public void onEnable() {
        log.info("Dirt Replacement Enabled!");
        PluginManager pm = getServer().getPluginManager();

        pm.registerEvent(Event.Type.PLAYER_MOVE, playerListener, Event.Priority.Highest, this);
    }

    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if(!(sender instanceof Player)){
            return false;
        }
        if(label.equalsIgnoreCase("grass")){
            if (sender instanceof Player){
                Player player = (Player)sender;
                setGrass(player, !hasGrass(player));
            } else {
                sender.sendMessage(ChatColor.RED + "Who are you? You don't get grass!");
            }

        }
        return true;
    }

    public boolean hasGrass(Player player) {
       return grass.contains(player);
    }

    public void setGrass(Player player, boolean enabled) {
       if (enabled){
       grass.add(player);
       player.sendMessage(ChatColor.YELLOW + "[Dirt Replace] Dirt will now turn into grass!");
       } else {
       grass.remove(player);
       player.sendMessage(ChatColor.YELLOW + "[Dirt Replace] Dirt will stay normal!");
    }
    }
}

Code:

package grass.LBJDaKing23.replace;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.block.BlockFace;
import org.bukkit.entity.Player;
import org.bukkit.event.player.PlayerEggThrowEvent;
import org.bukkit.event.player.PlayerListener;
import org.bukkit.event.player.PlayerMoveEvent;

public class listener extends PlayerListener {

    public static replace plugin;
    listener(replace instance) {
        plugin = instance;
    }

    public void onPlayerMove(PlayerMoveEvent event) {
        Player player = event.getPlayer();
        if (!plugin.hasGrass(player)){
            return;
        }
          Block block = player.getLocation().getBlock().getRelative(BlockFace.DOWN);
          if ((block.getType() == Material.DIRT)){
            block.setType(Material.GRASS);
        }
    }
}