LibGamerule
Built on Fabric, the LibGamerule library simplifies the creation of custom game rules. This tool is primarily aimed at mod developers but also offers capabilities for those working with datapacks and modpacks.
For Mod Developers
The module provides a straightforward interface for registering various rule types. Here's an example of creating a boolean rule:
// Registering a boolean rule
GameRules.RuleKey<BooleanRule> MY_GAMERULE = Gamerule.register(
"myGameRule", // command name in /gamerule
BooleanRule.create(true) // default value: true
);
// Getting the rule value boolean value = Gamerule.get(MY_GAMERULE);
Available rule types include:
- BooleanRule — boolean values
- DoubleRule — floating-point numbers (with optional min/max constraints)
- IntRule — integer values (also with range setting capability)
- EnumRule — support for any enumerations
- StringRule — arbitrary length string values
Libcd Integration
For modpack and datapack authors, compatibility with Libcd is implemented, allowing rule configuration through scripts and conditions.
Application Conditions
Please note that this functionality is not available for enumerations.
{
"when": [
{
"comment": "Boolean rule check",
"libgamerule:gamerule_has_value": "my_gamerule"
},
{
"comment": "Typed rule check",
"libgamerule:gamerule_has_value": {
"name": "my_gamerule_typed",
"type": "int",
"value": 10
}
}
]
}
Dynamic Rule Creation
New rules can be added directly in scripts:
var GameruleTweaker = libcd.require("libgamerule.GameruleTweaker");
GameruleTweaker.addGamerule("my_gamerule", "boolean", false);
GameruleTweaker.addGamerule("my_gamerule_typed", "integer", 7);
