GTA:

Hi guys Ive been working on my 1st Java plugin, however I dont really know how to code....
I watched a video to do this, but I dont undertsand how it works, so I dont know how to do more:

Code:java

package me.simplerocks.uhs;
 
 
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Fireball;
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.EntityDamageByEntityEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class UHS extends JavaPlugin implements Listener {
 
    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }
 
    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent e) {
        if (!(e.getAction() == Action.RIGHT_CLICK_AIR)) return;
 
        if (!(e.getItem().getType() == Material.FURNACE)) return;
 
        Fireball f = e.getPlayer().launchProjectile(Fireball.class);
        f.setIsIncendiary(false);
        f.setYield(0);
    }
 
    @EventHandler
    public void onEntityDamage(EntityDamageByEntityEvent e) {
        if (e.getDamager() instanceof Fireball) {
            Fireball f = (Fireball) e.getDamager();
            if (f.getShooter() instanceof Player) {
                Player shooter = (Player) f.getShooter();
                if (shooter.getItemInHand().getType() == Material.FURNACE) {
                    e.setDamage(10.0);
                }
            }
        }
    }
}

I know that that this shoots a fireball from a dispenser, ddoes 10 hearts nad dosent damage the environment, but can someone explain how it does this specifically.

As well as this if I wanted to another gun underneath this, how would i do it.
And how would I make it run of ammo with slight cooldowns.

If possible, could you explain this like im an idiot as Im quite a java noob.

 

You can use http://jd.bukkit.org/rb/apidocs/ to read up on all of the code you used.
For example to read about your onPlayerInteract method ctrl+f for PlayerInteractEvent.

Code:java

@EventHandler
public void onPlayerInteract(PlayerInteractEvent e) {
//called every time a player interacts
if (!(e.getAction() == Action.RIGHT_CLICK_AIR)) return;
//checks if the player right clicked air
if (!(e.getItem().getType() == Material.FURNACE)) return;
//checks if the player holds a furnace
Fireball f = e.getPlayer().launchProjectile(Fireball.class);
//creates a fireball
f.setIsIncendiary(false);
//sets the fireball to not cause fire
f.setYield(0);
//sets the fireball to have no explosion
}
 
@EventHandler
public void onEntityDamage(EntityDamageByEntityEvent e) {
//called every time something takes damage
if (e.getDamager() instanceof Fireball) {
//checks if the damage is from a fireball
Fireball f = (Fireball) e.getDamager();
//sets a variable equal to the entity that caused the damage
if (f.getShooter() instanceof Player) {
//checks if the damager is a player
Player shooter = (Player) f.getShooter();
//sets a variable equal to the causer of damage player
if (shooter.getItemInHand().getType() == Material.FURNACE) {
//checks if that player holds a furnace
e.setDamage(10.0);
//sets damage received to 10
}
}
}
}
}

 

beaudigi
The Bukkit API is hard to learn if you don't have an understanding of Java. I would spend time learning Java first, THEN learning the Bukkit API and coding.

But the easiest way to learn HOW something does what it does is to follow skilcox instructions

 

Thankyou for all ypur support guys, I will use your methods
Um but how do I Say start a new gun underneath the one posted above,, as it always comes up with an error..when I just copy paste that gun below it

Code:java

package me.simplerocks.uhs;
 
 
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Fireball;
import org.bukkit.entity.Player;
import org.bukkit.entity.Snowball;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class UHS extends JavaPlugin implements Listener {
 
    public void onEnable() {
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
    }
 
    @EventHandler
    public void onPlayerInteract(PlayerInteractEvent e) {
        //called every time a player interacts
        if (!(e.getAction() == Action.RIGHT_CLICK_AIR)) return;
        //checks if the player right clicked air
        if (!(e.getItem().getType() == Material.FURNACE)) return;
        //checks if the player holds a furnace
        Fireball f = e.getPlayer().launchProjectile(Fireball.class);
        //creates a Verbal
        f.setIsIncendiary(false);
        //sets the Verbal to not cause fire
        f.setYield(0);
        //sets the Verbal to have no explosion
    }
 
    @EventHandler
    public void onEntityDamage(EntityDamageByEntityEvent e) {
        //called every time something takes damage
        if (e.getDamager() instanceof Fireball) {
            //checks if the damage is from a verbal
            Fireball f = (Fireball) e.getDamager();
            //sets a variable equal to the entity that caused the damage
            if (f.getShooter() instanceof Player) {
                //checks if the damager is a player
                Player shooter = (Player) f.getShooter();
                //sets a variable equal to the causer of damage player
                if (shooter.getItemInHand().getType() == Material.FURNACE) {
                    //checks if that player holds a furnace
                    e.setDamage(10.0);    [SIZE=5][FONT=arial black]   (im Getting an error here: it says wrong syntax }. I have replaced it but it still comes up with this issue)[/FONT][/SIZE]
                    //sets damage received to 10
 
 
                    @EventHandler
                    public void onPlayerInteract1(PlayerInteractEvent e) {
                        //called every time a player interacts
                        if (!(e.getAction() == Action.RIGHT_CLICK_AIR)) return;
                        //checks if the player right clicked air
                        if (!(e.getItem().getType() == Material.INK_SACK)) return;
                        //checks if the player holds a furnace
                        Snowball s = e.getPlayer().launchProjectile(Snowball.class);
 
                    }
 
                    @EventHandler
                    public void onEntityDamage1(EntityDamageByEntityEvent e) {
                        //called every time something takes damage
                        if (e.getDamager() instanceof Snowball) {
                            //checks if the damage is from a verbal
                            Snowball s = (Snowball) e.getDamager();
                            //sets a variable equal to the entity that caused the damage
                            if (s.getShooter() instanceof Player) {
                                //checks if the damager is a player
                                Player shooter = (Player) s.getShooter();
                                //sets a variable equal to the causer of damage player
                                if (shooter.getItemInHand().getType() == Material.INK_SACK) {
                                    //checks if that player holds a furnace
                                    e.setDamage(2.0);
                                    //sets damage received to 10
                }
            }
        }
    }
}

'



Btw How do I add ammo and a cooldown, ive been watching some more vids, but I think its easier when you guys explain it

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

 

Moved to Plugin Development.

 

It's great that your learning how to code but, you also need to learn to be self sufficient. So

asking whenever you get stuck isn't going to be so great in the future. Just saying.

 

Ok im still learning the lingo of the forums. i wish to be an active member
Ive fixed the problem ive been having and added a pistol type weapon. Although it is very similar
Im going to only post when needed now, as ill try watch a video on how to do it first.

 

Thanks! Sorry if I sound like a jerk, I'm not trying to be. Just trying to keep peopling from getting bugged and hopefully this will help you learn to be self sufficient.

 

you could also do an else if in the same method, or make a method that takes input from the listener method to clean up and keep it small