Tnt Blasting and Player Spawn

I just want a way to set a spawn where the ignited tnt spawns and gets shot at a specific area.

Is there a way to do this?

If there isn't how do I make it so tnt explodes in an area but it happens at random places in the area?

Thanks

 

• Set a spawn for what? Blocks? Entities? Players?
• How does the ignited tnt "spawn"? Do players place it? Do you spawn it with your code?
• How does it shoot? Tnt cannon? Velocity?

 

TheMcScavenger
I want to make it so one command sets the spawn for players and one command from where the tnt shoots out of and a command for where the tnt lands, in this case a random area.
And yes I want it so the velocity changes depending on where the tnt shoots out of.
What i am trying to create is a minigame similar to this:
http://www.mariowiki.com/Bombs_Away_(minigame)

 

Set spawn:

Code:

player.getWorld().setSpawnLocation(x, y, z);

Spawn TNT & Set Velocity:

Code:

World world = player.getWorld();
Location location = player.getLocation();
TNTPrimed tnt = (TNTPrimed) world.spawn(location, TNTPrimed.class);
tnt.setVelocity(velocity);