====== Adding a Gamerule ======

==== Registering a Gamerule ====

To create a gamerule, register it using the ''GameRuleRegistry'' of the Fabric API:

<code java [enable_line_numbers="true"]>
// Create and register a boolean game rule with the name "shouldPigsFly" which is true by default.
public static final GameRules.Key<GameRules.BooleanRule> SHOULD_PIGS_FLY =
GameRuleRegistry.register("shouldPigsFly", Category.MOBS, GameRuleFactory.createBooleanRule(true));
</code>

==== Using the gamerule ====

To get access to the value of a game rule you need to get the server world:

<code java [enable_line_numbers="true"]>
world.getGameRules().getBoolean(SHOULD_PIGS_FLY)
</code>

==== Translation ====

The registered gamerule now shows up untranslated in the game rule list, which can be opened in the world creation screen.
To translate the name, add a ''gamerule.gameruleName'' entry (see [[tutorial:lang|lang]] for more info):

<code json>
{
  "gamerule.shouldPigsFly": "Pigs should fly"
}
</code>