Launching Projectiles

Hello everyone!

I am still working on that RPG plugin for Wands Special Weapons etc, and have come across a problem. What I want to do is make a spread of Snowballs (about 5 - 7) and if one of those Snowballs Hits a player, it would set them on fire! The problem I am having is setting the Metadata and a Vector to the same Projectile (Snowball.class).

Code:

Code:java

 @EventHandler
public void Snowball_to_fire_event(PlayerInteractEvent event){
 
ItemStack is = new ItemStack(Material.STICK);
ItemMeta im = is.getItemMeta();
im.setDisplayName(ChatColor.DARK_RED + "SnowballFire Wand");
im.setLore(Arrays.asList(ChatColor.GOLD + "Spawns a Damage Potion"));
is.setItemMeta(im);
 
Player player = event.getPlayer();
if(event.getAction() == Action.RIGHT_CLICK_AIR || event.getAction() == Action.RIGHT_CLICK_BLOCK){
if(player.getItemInHand().equals(is)){
if(player.hasPermission("wand.snowballfire")){
//Cooldown Stuff
if(Snowballfirewandcooldown.containsKey(player.getName())){
player.sendMessage(ChatColor.GOLD + "Woah there, You can't use this spell for another: " +
ChatColor.RED + getTimeLeft(player, Snowballfirewandcooldown) + ChatColor.GOLD + " seconds!");
 
}else{
 
//I can set the Metadata, but I can not set the Velocity!
 
player.launchProjectile(Snowball.class).setMetadata("SnowballToFire", new FixedMetadataValue(p, true));
}
}else{
player.sendMessage(deny);
}
}
}
 
 
 
 
}

I tried doing this:

Code:java

 Vector first = player.getLocation().getDirection().normalize().multiply(1);
 
Projectile ball = player.launchProjectile(Snowball.class);
ball.setMetadata("SnowballToFire", new FixedMetadataValue(p, true));
ball.setVelocity(first);

But I have not found out a way to launch "ball".

EDIT: Fixed Typo

Thank you for reading!
All help is much appreciated!

 

You could use the player.getWorld().spawnEntity(...) Method store the entity in a variable and set the velocity, location and metadata. To fire them in a cone you could rotate the vector and spawn a new entity at the same location, or a little bit away, so they cant interact with eachother (I would put them in a smal circle around the location where the cone should start).

 

CoderCloud I was able to fire the Snowball using my code, but I am having a problem while using the Vector. When I try to fire the snowball in a certain direction it will fire right in from of me then stop, and drop to the ground. Its very weird. I am not sure what is causing this. It will also start firing in one direction and then curve all of a sudden making a drastic change in direction.

EDIT: Fixed Typo

 

try using this instead

Code:

Snowball ball = event.getEntity().launchProjectile(Snowball.class);

 

Will do monkeymanboy ! Let me test that out really quick.

monkeymanboy You can't do event.getEntity(); in a PlayerInteractEvent.
It wont let me.

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

 

get player then

 

monkeymanboy That makes it even worse

 

XvBaseballkidvX
Im using this in my Plugin:

Code:java

 
Arrow arrow = SpawnEntityAtPlayer(e.getPlayer(), Arrow.class);
arrow.setShooter(e.getPlayer());
arrow.setVelocity(e.getPlayer().getEyeLocation().getDirection().multiply(2));
arrow.setMetadata("ArrowType", new MyMetadata(this, "stick"));
 

Maybe its the getEyeLocation(). You could try to raise the speed of the snowball too.

XvBaseballkidvX I would also recommend to not use schedulers for your cooldowns, for the following reasons:
1. You cant get the exact time left for the cooldown (like 0.5)
2. Threads take up more memory than most other methods would

Im always using this system:

Code:java

    HashMap<String, Long> cooldowns = new HashMap<>();
 
    public float getTimeLeft(Player p, String cooldown) {
        String format = p.getName() + "." + cooldown;
        try {
            long l = cooldowns.get(format);
            long diff = l-System.currentTimeMillis();
            if(diff < 0)
                diff = 0;
            float left = diff/1000f;
            return left;
        } catch (NullPointerException e) {
            return 0f;
        }
    }
 
    public boolean isOnCooldown(Player p, String cooldown) {
        return getTimeLeft(p, cooldown) != 0;
    }
 
    public void setCooldown(Player p, String cooldown, float time) {
        String format = p.getName() + "." + cooldown;
        long l = System.currentTimeMillis() + (long) (time*1000);
        cooldowns.put(format, l);
    }

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

 

CoderCloud Thank you so much! I am going to try that now!

 

XvBaseballkidvX
If its not working i can give you the whole code of the plugin (its only one class).