Minecraft Forums

Gamerules are really useful and can effect gameplay in many ways, and are really easy to use.

Making gamerules are however might be hard to do if you don't know where to start.

Step 1: make the FMLServerStartingEvent in your @Mod class

@EventHandler
	public void serverStart(FMLServerStartingEvent event) {}

this is called when you open your world(Single Player) or opening your server(Multiplayer)

this event is also used to make commands (Look It Up)

Step 2: use the event variable to get the world

World world = event.getServer().getEntityWorld();

Step 3: If you've ever messed around with the World class and/or have messed around with gamerules in code before

you should know what to do.

world.getGameRules().setOrCreateGameRule("<your gamerule name>", "<value>");

You can use this again to set the value.

Full Code:

@EventHandler
 public void serverStart(FMLServerStartingEvent event) {

       World world = event.getServer().getEntityWorld();

 world.getGameRules().setOrCreateGameRule("", "");
}

Now You're Done!