Spawn Mobs in an Area

Hey Bukkit Forums!

I am making a plugin where I spawn 50 mobs within an area, but I can not get it to work. I am doing this:

Code:

    public static void startGame() {
 
        File file = new File(Bukkit.getServer().getPluginManager().getPlugin("SquireGames").getDataFolder().getAbsolutePath(), "main.yml");
        YamlConfiguration yml = YamlConfiguration.loadConfiguration(file);
 
        Location loc = new Location(Bukkit.getWorld(yml.getString("spawn.world")), yml.getDouble("spawn.x"), yml.getDouble("spawn.y"), yml.getDouble("spawn.z"));
        World world = loc.getWorld();
 
        for (int i = 0; i < 50; i++) {
            Location spawnSpot = loc;
            spawnSpot.setX(spawnSpot.getX() - 50);
            spawnSpot.setZ(spawnSpot.getZ() - 50);
 
            spawnSpot.setX(spawnSpot.getX() + Math.random() * 100);
            spawnSpot.setZ(spawnSpot.getZ() + Math.random() * 100);
 
            world.spawnEntity(spawnSpot, EntityType.ZOMBIE);
            Bukkit.broadcastMessage(spawnSpot.toString());
        }
 
    }

And it is spawning mobs randomly all over the place, both inside and outside where I want them. I have a box that is 100x100 and I have the center point defined in a config. How do I get this to work? What am I doing wrong?

 

EnderTroll68
For starters, that algorithm won't work.

 

xTrollxDudex Just saying it will not work doesn't really help him fix it...

EnderTroll68
I believe something like this should work

Code:java

 
Location spawnSpot = ...;
for (int i = 0; i < 50; i++) {
 
Random r = new Random();
int i = r.nextInt(200)-100;
spawnSpot.setX(spawnSpot.getX() + i);
spawnSpot.setZ(spawnSpot.getZ() + i);
 
world.spawnEntity(spawnSpot, EntityType.ZOMBIE);
Bukkit.broadcastMessage(spawnSpot.toString());
}
 

 

xXSniperzzXx_SD
Two things went wrong:
First, yes, it will help. It's basic math, I expect him to look at the algorithm closely again.
Second, don't spoon feed. That's counterintuitive and doesn't help anymore than my post.

 

xXSniperzzXx_SD
The only thing I have to call from the files is the very center of the area, and then I am going from there.

xTrollxDudex
I was not asking to be spoon fed code, and also I am aware that it does not work, what I am asking is for the math aspect of this, not the code.

 

EnderTroll68
I was referring to Sniperzz about the spoonfeeding.

I recommend you to this SO post about bounded randoms.

 

xTrollxDudex

Code:java

        Location loc = new Location(Bukkit.getWorld(yml.getString("spawn.world")), yml.getDouble("spawn.x"), yml.getDouble("spawn.y"), yml.getDouble("spawn.z"));
        World world = loc.getWorld();
        for (int i = 0; i < 50; i++) {
            Location spawnSpot = loc;
            spawnSpot.setX(spawnSpot.getX() + (-50 + (Math.random() * 101)));
            spawnSpot.setY(spawnSpot.getY() + (-50 + (Math.random() * 101)));
            world.spawnEntity(spawnSpot, EntityType.ZOMBIE);
        }

So like that then?