Right-Clicking Iron Sword Launches Player

I need some code that when a player right-clicks their iron sword it will launch them into the air 3-5 blocks. If you don't know what I am talking about, go onto the server mcctf.com and play as a soldier.

 

when they rightclick whit the sword, increase there Y of their velocity

 

ferrybig Can you show me some example code?

 

When you say launch do you mean straight up or into the direction their going with a slight jump (like when you get hit)

 

chasechocolate

Code:

@EventHandler
public void onInteract(PlayerInteractEvent event) {
    Player player = event.getPlayer();
 
    if (player.getItemInHand().getType() == Material.IRON_SWORD && (event.getAction() == Action.RIGHT_CLICK_AIR || event.getAction() == Action.RIGHT_CLICK_BLOCK)) {
        net.minecraft.server.EntityPlayer pl = (net.minecraft.server.EntityPlayer)((CraftPlayer)player).getHandle();
        if (pl.onGround) {
            player.setVelocity(player.getVelocity().add(new Vector(0, 1, 0)));
        }
    }
}

I need to stop just giving people code >_>, I don't know that it helps much.. So I'll explain what it's doing :

Listens for a PlayerInteractEvent
Checks if they have an iron sword in hand and they right clicked
Checks if they're on the ground or in a block (so they don't just keep right clicking)
Sets their velocity to fly up a few blocks


EDIT: Better "on ground" detection

 

your on groudn detection wont work whit other versions than craftbukkit that implement bukkit, loosing a compacability part

 

The problem with detecting if a player is on the ground is that it can get extremely complicated with things like, standing off the edge of stairs. It's possible, but it would probably use up at least 50 lines rather than a much simpler 2.

 

check the block below and if it is not air then continue.

 

The player can be floating above the block though, so you have to check if player.getLocation().getY() % 1 == 0, but then that doesn't work for non full blocks, and also if you're standing on the very edge of a block it won't work because the block under the player can still be air if they're standing on the edge of another block.

 

If the server has commandbook, perform the command /rocket <player>

 

All OP does is ask for source code..