AnvilUpdateEvent is fired when the inputs (either input stack, or the name) of an anvil are changed. You can listen to this event to add custom anvil recipes.

The event is cancelable.

If the event is canceled, vanilla behavior will not run, and the output will be set to <item:minecraft:air>.

If the event is not canceled, but the output is not empty, it will set the output and not run vanilla behavior.

The event does not have a result.

It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.

ZenScript
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import crafttweaker.api.event.MCAnvilUpdateEvent;

MCAnvilUpdateEvent extends MCEvent. That means all methods available in MCEvent are also available in MCAnvilUpdateEvent

名称	类型	可获得	可设置	描述
名称 left	类型 IItemstack	可获得 true	可设置 false	描述 No Description Provided
名称 levelCost	类型 int	可获得 true	可设置 true	描述 No Description Provided
名称 材料成本	类型 int	可获得 true	可设置 true	描述 No Description Provided
名称 name（名称）	类型 string?	可获得 true	可设置 false	描述 No Description Provided
名称 output（输出）	类型 IItemstack	可获得 true	可设置 true	描述 No Description Provided
名称 player	类型 MCPlayerEntity?	可获得 true	可设置 false	描述 No Description Provided
名称 right	类型 IItemstack	可获得 true	可设置 false	描述 No Description Provided