Package net.minecraft.screen

Interface ScreenHandlerContext

public interface ScreenHandlerContext
A screen handler context allows running code on the server side only. Screen handlers are designed to be used on both sides; any action modifying the world has to be wrapped in a call to the context. This guarantees that no casting error occurs inside the screen handler code.

A context with the world is passed to the screen handler on creation on the server. On the server, the context executes the function with the world and the position. On the client, the empty context is used.

Mappings:
Namespace Name
official bwx
intermediary net/minecraft/class_3914
named net/minecraft/screen/ScreenHandlerContext

  • Field Details

    • EMPTY

      static final ScreenHandlerContext EMPTY
      The dummy screen handler context for clientside screen handlers.
      Mappings:
      Namespace Name Mixin selector
      official a Lbwx;a:Lbwx;
      intermediary field_17304 Lnet/minecraft/class_3914;field_17304:Lnet/minecraft/class_3914;
      named EMPTY Lnet/minecraft/screen/ScreenHandlerContext;EMPTY:Lnet/minecraft/screen/ScreenHandlerContext;

  • Method Details

    • create

      static ScreenHandlerContext create(World world, BlockPos pos)
      Returns an active screen handler context. Used on the logical server.
      Mappings:
      Namespace Name Mixin selector
      official a Lbwx;a(Lcgx;Lgt;)Lbwx;
      intermediary method_17392 Lnet/minecraft/class_3914;method_17392(Lnet/minecraft/class_1937;Lnet/minecraft/class_2338;)Lnet/minecraft/class_3914;
      named create Lnet/minecraft/screen/ScreenHandlerContext;create(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;)Lnet/minecraft/screen/ScreenHandlerContext;

    • get

      <T> Optional<T> get(BiFunction<World,BlockPos,T> getter)
      Gets an optional value from this context's world and position with a BiFunction getter.
      Parameters:
      getter - a function that gets a non-null value from this context's world and position
      Returns:
      a present Optional with the getter's return value, or Optional.empty() if this context is empty
      Mappings:
      Namespace Name Mixin selector
      official a Lbwx;a(Ljava/util/function/BiFunction;)Ljava/util/Optional;
      intermediary method_17395 Lnet/minecraft/class_3914;method_17395(Ljava/util/function/BiFunction;)Ljava/util/Optional;
      named get Lnet/minecraft/screen/ScreenHandlerContext;get(Ljava/util/function/BiFunction;)Ljava/util/Optional;

    • get

      default <T> T get(BiFunction<World,BlockPos,T> getter, T defaultValue)
      Gets a value from this context's world and position with a BiFunction getter.
      Parameters:
      getter - a function that gets a non-null value from this context's world and position
      defaultValue - a fallback default value, used if this context is empty
      Returns:
      the getter's return value if this context is active, the default value otherwise
      Mappings:
      Namespace Name Mixin selector
      official a Lbwx;a(Ljava/util/function/BiFunction;Ljava/lang/Object;)Ljava/lang/Object;
      intermediary method_17396 Lnet/minecraft/class_3914;method_17396(Ljava/util/function/BiFunction;Ljava/lang/Object;)Ljava/lang/Object;
      named get Lnet/minecraft/screen/ScreenHandlerContext;get(Ljava/util/function/BiFunction;Ljava/lang/Object;)Ljava/lang/Object;

    • run

      default void run(BiConsumer<World,BlockPos> function)
      Runs a BiConsumer with this context's world and position if this context is active.
      Mappings:
      Namespace Name Mixin selector
      official a Lbwx;a(Ljava/util/function/BiConsumer;)V
      intermediary method_17393 Lnet/minecraft/class_3914;method_17393(Ljava/util/function/BiConsumer;)V
      named run Lnet/minecraft/screen/ScreenHandlerContext;run(Ljava/util/function/BiConsumer;)V