[UNSOLVED]Velocity and getting nearest player :/

Hi, so I am coding a plugin so where if a player is on the ground, a dispenser fires an arrow at the player and the arrow explodes.

I am having trouble with two things, one is how to make the arrow shoot up in the air when it is fired, two, is how to get the nearest player to the dispenser?

Here is my code:

Code:java

package me.thesamster8.clashofclans.defenses;
 
import org.bukkit.ChatColor;
import org.bukkit.Material;
import org.bukkit.block.Dispenser;
import org.bukkit.entity.Arrow;
import org.bukkit.entity.Projectile;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.event.entity.ProjectileHitEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.PlayerInventory;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.projectiles.BlockProjectileSource;
import org.bukkit.projectiles.ProjectileSource;
 
public class Mortar implements Listener {
 
public void giveMortar(ItemStack mortar, PlayerInventory pi) {
mortar = new ItemStack(Material.DISPENSER);
ItemMeta meta = mortar.getItemMeta();
meta.setDisplayName(ChatColor.GRAY + "" + ChatColor.BOLD + "Mortar");
mortar.setItemMeta(meta);
pi.addItem(mortar);
}
 
@EventHandler
public void onExplode(ProjectileHitEvent e) {
Projectile p = e.getEntity();
if(p instanceof Arrow) {
Arrow a = (Arrow) p;
ProjectileSource shooter = a.getShooter();
if(shooter instanceof BlockProjectileSource) {
if(((BlockProjectileSource) shooter).getBlock() != null) {
if(((BlockProjectileSource) shooter).getBlock().getState() instanceof Dispenser) {
Dispenser d = (Dispenser) a.getShooter();
a.getWorld().createExplosion(a.getLocation(), 4F);
}
}
}
}
}
 
@EventHandler
public void onExploder(EntityExplodeEvent e) {
e.blockList().clear();
}
}

I have tried to mess around with getNearbyEntities but that doesn't work for dispensers, I also tried casting it to a dispenser which failed aswell.

 

ZodiacTheories #.getDistance() to get the distance of each player and find out which distance is the smallest.

 

Glumpz

Can't seem to find the getDistance() method

 

Why are two of your methods named the same thing?

 

JBoss925

Didn't realise that :3 Changed it!

Anyone? (Sorry for the bump, its just really urgent)

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

 

Bump

 

It is player.getLocation().distance(newlocationtocompare)

 

distance() is actually a pretty bad choice. Use distanceSquared instead:

Code:java

 
double distance = loc1.distanceSquared(loc2);
double backSquared = Math.pow(distance, 2);
 

 

MOMOTHEREAL Panjab

Thanks,

now that I have that setup, how would I do the velocity, I have tried a.setVelocity(new Vector although I couldn't find any methods that were to do with the direction of the arrow.

Updated Code:

Code:java

package me.thesamster8.clashofclans.defenses;
 
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.block.Dispenser;
import org.bukkit.entity.Arrow;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Projectile;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.event.entity.ProjectileHitEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.PlayerInventory;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.projectiles.BlockProjectileSource;
import org.bukkit.projectiles.ProjectileSource;
 
public class Mortar implements Listener {
 
    public void giveMortar(ItemStack mortar, PlayerInventory pi) {
        mortar = new ItemStack(Material.DISPENSER);
        ItemMeta meta = mortar.getItemMeta();
        meta.setDisplayName(ChatColor.GRAY + "" + ChatColor.BOLD + "Mortar");
        mortar.setItemMeta(meta);
        pi.addItem(mortar);
        }
 
    @EventHandler
    public void onExplode(ProjectileHitEvent e) {
        Projectile p = e.getEntity();
        if(p instanceof Arrow) {
            Arrow a = (Arrow) p;
            ProjectileSource shooter = a.getShooter();
            if(shooter instanceof BlockProjectileSource) {
                if(((BlockProjectileSource) shooter).getBlock() != null) {
                if(((BlockProjectileSource) shooter).getBlock().getState() instanceof Dispenser) {   
                Dispenser d = (Dispenser) a.getShooter();
                a.getWorld().createExplosion(a.getLocation(), 4F);
                for(Entity ent : a.getNearbyEntities(25, 25, 25)) {
                d.getLocation().distance((Location) ent);
                    }
                }
            }
        }
    }
    }
    @EventHandler
    public void onExploder(EntityExplodeEvent e) {
        e.blockList().clear();
    }
}
 

Thanks

 

Panjab It's distanceSQUARED, why would you use the Math.pow(,2); It should actually be Math.sqrt() <--- but that's the thing that makes distance() a heavy method.

 

Bump

 

Bump :/

 

ZodiacTheories

Code:java

d.getLocation().distance((Location) ent);

At this line you have to ask yourself this: Is the Entity a Location? Can it ever even be a Location? Those are the questions you must ask yourself before casting something. Now, ask yourself this: How do I get the Location of an Entity?

 

Rocoty

I don't get what you mean

 

ZodiacTheories Have you learned about inheritance and polymorphism? If not, you must read about it. It is crucial to your success.

 

Rocoty

Still learning java, I know inheritance, currently learning polymorphism

 

BUMP

 

Bump :/

BUMP this is urgent D:

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

 

Bump. Please help

 

You will get what I mean once you learn inheritance and polymorphism. Basically, you cannot cast an entity to a location because an entity is not, and will never be, a location.

 

Rocoty

I didn't get what you meant because of the wording, not the java behind it.