Solved Get Interacted Block y -1

From my current code, how would I go about checking the block under the pressure plate?

@EventHandler
public void onPlayerStep(PlayerInteractEvent e) {
if(e.getAction().equals(Action.PHYSICAL)) {
Player p = e.getPlayer();
if(e.getClickedBlock().equals(Material.STONE_PLATE)) {

 

Samthelord1

Code:

Block b = e.getClickedBlock().getLocation().getBlock().getRelative(BlockFace.DOWN);

or

Code:

Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();

 

Assist so should

public void onPlayerStep(PlayerInteractEvent e) {
if(e.getAction().equals(Action.PHYSICAL)) {
Player p = e.getPlayer();
if(e.getClickedBlock().equals(Material.STONE_PLATE)) {
Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();

if(b.equals(Material.REDSTONE_BLOCK)) {
//to come

}

work, or can I not check if a block is a material?

 

Or maybe just

Code:

Block b = e.getClickedBlock().getRelative(BlockFace.DOWN);

 

raGan.
Or that...

Samthelord1
Check if b.getType().equals(Material.REDSTONE_BLOCK)

 

Samthelord1
You can also use == with enums, like

Code:

b.getType() == Material.REDSTONE_BLOCK

 

Assist off topic, but I don't 100% understand vectors, I looked at LucasEmanuel s tutorial, but I'm still not quite sure how to shoot some forward https://forums.bukkit.org/threads/tutorial-how-to-calculate-vectors.138849/

raGan. I feel like I should be tagging you

Assist any idea?

evilmidget38 I have come across an error, if you have any idea help is appreciated. Here is my code.

@EventHandler
public void onPlayerStep(PlayerInteractEvent e) {
if(e.getAction().equals(Action.PHYSICAL)) {
Player p = e.getPlayer();
if(e.getClickedBlock().getType().equals(Material.STONE_PLATE)) {
Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();

if(b.getType().equals(Material.REDSTONE_BLOCK)) {
p.sendMessage("Debugging..");
p.setVelocity(p.getVelocity().setY(5));
p.setVelocity(p.getVelocity().setZ(15));
I don't get the debugging message

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Samthelord1
That works fine for me, though your vectors are way too fast :>

Setting Y to 1 will shoot up ~20 blocks, so setting Z to 15: "moved too quickly" spam

Suggestion:
p.setVelocity(p.getVelocity().add(new Vector(0, 0.5, 1.5)));

 

Chinwe still not working :/

Chinwe whole code:

HTML:

package me.samthelord1.launchpads;
 
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.Vector;
 
/**
*
* @author Sam
*/
public class Main extends JavaPlugin {
    public void onEnable() {
       
    }
@EventHandler
public void onPlayerStep(PlayerInteractEvent e) {
    if(e.getAction().equals(Action.PHYSICAL)) {
    Player p = e.getPlayer();
    if(e.getClickedBlock().getType().equals(Material.STONE_PLATE)) {
        Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();
       
        if(b.getType().equals(Material.REDSTONE_BLOCK)) {
            p.sendMessage("Debugging..");
p.setVelocity(p.getVelocity().add(new Vector(0, 0.5, 1.5)));
 
                        }
                    } 
                }                     
            }
        }
 

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Theres your problem, you ain't registering your listener
Put this into your onEnable():

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

 

Chinwe oh dear xD

Chinwe I feel disguisted with myself, didnt even implement Listener

Chinwe it's working but how would I make it shoot them in the direction that they're facing?
EDIT: Should I use a switch and return x and z for where the players facing?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Nah, you can use their direction:

Code:

p.setVelocity(p.getVelocity().add(p.getLocation().getDirection().multiply(3)).setY(1));

Trying to resemble HiveMC by any chance?

 

Chinwe yeah, I've seen it requested a few times, as HiveMC is closed source

Chinwe how would I cancel damage whilst this is happening?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

easy way: add to a list, make a delayed task to remove them from it, on damage event check if they are in the list then cancel it

 

MercilessPvP I was thinking for a shorter way, but i guess I'll use it and make a pull request for setInvincible(true/false) on the github

Chinwe if i do this:

PHP:

undamageable.add(p);
                        }
 
                    }
   
    }
}
 
               
@EventHandler
public void anotherEvent(EntityDamageEvent event) {
        Entity e = event.getEntity();
if(e instanceof Player) {
    if(undamageable.contains(e)) {

then schedule my delayed task will it work?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Samthelord1
Hi again, could you show more code ? I mean when do you schedule the task ?

 

Samthelord1
Nupe, because the list will throw huge amounts of NPEs - check undamageable contains the players names before trying to remove too.

Try checking the cause is DamageCause.FALL too (and cancel it if so) :>

And although using a scheduler might make it exploit proof, it would be much simpler just to listen to the damage event: in the chance that the player doesn't take any fall damage, they have only 1 damage event where they are invulnerable.

 

raGan. Chinwe I have

PHP:

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package me.samthelord1.launchpads;
 
import java.util.ArrayList;
import java.util.List;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.Entity;
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.entity.EntityDamageEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
/**
*
* @author Sam
*/
public class Main extends JavaPlugin implements Listener {
    public void onEnable() {
    getServer().getPluginManager().registerEvents(this, this);
 
    }
   
public static List<Player> undamageable = new ArrayList<>();
 
@EventHandler
public void onPlayerStep(PlayerInteractEvent e) {
    if(e.getAction().equals(Action.PHYSICAL)) {
    Player p = e.getPlayer();
    if(e.getClickedBlock().getType().equals(Material.STONE_PLATE)) {
        Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();
       
        if(b.getType().equals(Material.REDSTONE_BLOCK)) {
            p.sendMessage("Debugging..");
p.setVelocity(p.getVelocity().add(p.getLocation().getDirection().multiply(3)).setY(1));
undamageable.add(p);
                        }
 
                    }
   
    }
}
 
               
@EventHandler
public void anotherEvent(EntityDamageEvent event) {
        final Entity e = event.getEntity();
if(e instanceof Player) {
    if(undamageable.contains(e)) {
      event.setCancelled(true);
    this.getServer().getScheduler().scheduleSyncDelayedTask(this, new Runnable() {
  public void run() {
      undamageable.remove(e);
  }
}, 5*20L);
    }
}
 
           
}
        }

 

There's no need to use scheduler at all. Just store each player's start time in the map, and then look how long passed since and if it's within the limit, cancel the event. If the difference is higher then the limit, remove it from the map.

NEVER store player objects, use player names instead.

Code:

static final long LIMIT = 3000; // 3 seconds
final Map<String, Long> launchTimes = new HashMap<String, Long>();
 
//put players you need when they are launched
launchTimes.put(e.getPlayer().getName(), System.currentTimeMillis());
 
//then check in damage event
Long time = launchTimes.get(e.getPlayer().getName());
if(time != null) {
    if(System.currentTimeMillis() - time < LIMIT) {
        e.setCancelled(true);
    }
    else {
        launchTimes.remove(e.getPlayer().getName());
    }
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Chinwe raGan. should /*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package me.samthelord1.launchpads;

import java.util.ArrayList;
import java.util.List;
import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.entity.Entity;
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.entity.EntityDamageEvent;
import org.bukkit.event.entity.EntityDamageEvent.DamageCause;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;

/**
*
* @author Sam
*/
public class Main extends JavaPlugin implements Listener {
public void onEnable() {
getServer().getPluginManager().registerEvents(this, this);

}



@EventHandler
public void onPlayerStep(PlayerInteractEvent e) {
if(e.getAction().equals(Action.PHYSICAL)) {
Player p = e.getPlayer();
if(e.getClickedBlock().getType().equals(Material.STONE_PLATE)) {
Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();

if(b.getType().equals(Material.REDSTONE_BLOCK)) {
p.sendMessage("Debugging..");
p.setVelocity(p.getVelocity().add(p.getLocation().getDirection().multiply(3)).setY(1));
}

}

}}


@EventHandler
public void anotherEvent(EntityDamageEvent event) {
final Entity e = event.getEntity();
if(e instanceof Player) {
if(event.getCause().equals(DamageCause.FALL)) {
event.setCancelled(true);
}

}
}

}
work?

 

Samthelord1
Sorry but I don't feel like reading not formatted code now.

btw no, it will cancel all fall damage for all player all the time

 

raGan. with your code, its the exact thing that I'm annoyed about, from the event, you can't getPlayer() because its a entity, and you cant getName from a entity.

 

Samthelord1
Cast it to a player then

Code:

if(e.getEntity() instanceof Player) {
    Player player = (Player) e.getEntity();
    // do stuff here
}

 

raGan. I did but it still didn't work :/

 

Samthelord1
You can't just say that it does not work. To help you, I need to see what doesn't work, and how it doesn't work.

 

raGan. I meant I tried it earlier, I can't remember but I think it was an error on line 50 or something, I'm not on my computer but ill tell you in about 8 hours

Assist raGan. Chinwe heres my code, not sure why but the player's still taking damage

PHP:

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package me.samthelord1.launchpads;
 
import java.util.HashMap;
import java.util.Map;
import org.bukkit.Material;
import org.bukkit.block.Block;
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.entity.EntityDamageEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
/**
*
* @author Sam
*/
public class Main extends JavaPlugin implements Listener {
    public void onEnable() {
    getServer().getPluginManager().registerEvents(this, this);
 
    }
    static long LIMIT = 3000; // 3 seconds
Map<String, Long> launchTimes = new HashMap<>();
 
 
@EventHandler
public void onPlayerStep(PlayerInteractEvent e) {
    if(e.getAction().equals(Action.PHYSICAL)) {
    Player p = e.getPlayer();
    if(e.getClickedBlock().getType().equals(Material.STONE_PLATE)) {
        Block b = e.getClickedBlock().getLocation().subtract(0, 1, 0).getBlock();
       
        if(b.getType().equals(Material.REDSTONE_BLOCK)) {
            p.sendMessage("Debugging..");
p.setVelocity(p.getVelocity().add(p.getLocation().getDirection().multiply(3)).setY(1));
      launchTimes.put(p.getName(), LIMIT);
       
        }
 
                   
    }
   
    }}
 
               
@EventHandler
public void anotherEvent(EntityDamageEvent event) {
if(event.getEntity() instanceof Player) {
    Player player = (Player) event.getEntity();
    Long time = launchTimes.get(player.getName());
if(time != null) {
    if(System.currentTimeMillis() - time < LIMIT) {
        event.setCancelled(true);
    }
    else {
        launchTimes.remove(player.getName());
    }
}
}
}
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

You need to put current time in lauchTime, not limit.
Change

Code:

launchTimes.put(p.getName(), LIMIT);

to

Code:

launchTimes.put(p.getName(), System.currentTimeMillis());

I even gave you that code.

 

raGan. fixed thanks