@minecraft/server
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    Class WorldBeforeEventsBeta

    A set of events that fire before an actual action occurs. In most cases, you can potentially cancel or modify the impending event. Note that in before events any APIs that modify gameplay state will not function and will throw an error. (e.g., dimension.spawnEntity)

    Index

    Properties

    chatSend effectAdd entityRemove explosion itemUse playerBreakBlock playerGameModeChange playerInteractWithBlock playerInteractWithEntity playerLeave playerPlaceBlock weatherChange

    Properties

    chatSend: ChatSendBeforeEventSignal

    This event is triggered after a chat message has been broadcast or sent to players.

    This property can be read in early-execution mode.

    import { world, DimensionLocation } from "@minecraft/server";

    function customCommand(targetLocation: DimensionLocation) {
      const chatCallback = world.beforeEvents.chatSend.subscribe((eventData) => {
        if (eventData.message.includes("cancel")) {
          // Cancel event if the message contains "cancel"
          eventData.cancel = true;
        } else {
          const args = eventData.message.split(" ");

          if (args.length > 0) {
            switch (args[0].toLowerCase()) {
              case "echo":
                // Send a modified version of chat message
                world.sendMessage(`Echo '${eventData.message.substring(4).trim()}'`);
                break;
              case "help":
                world.sendMessage(`Available commands: echo <message>`);
                break;
            }
          }
        }
      });
    }
    effectAdd: EffectAddBeforeEventSignal

    This event is triggered after an event has been added to an entity.

    This property can be read in early-execution mode.

    entityRemove: EntityRemoveBeforeEventSignal

    Fires before an entity is removed from the world (for example, unloaded or removed after being killed.)

    This property can be read in early-execution mode.

    explosion: ExplosionBeforeEventSignal

    This event is fired after an explosion occurs.

    This property can be read in early-execution mode.

    itemUse: ItemUseBeforeEventSignal

    This event fires when an item is successfully used by a player.

    This property can be read in early-execution mode.

    playerBreakBlock: PlayerBreakBlockBeforeEventSignal

    This event fires before a block is broken by a player.

    This property can be read in early-execution mode.

    playerGameModeChange: PlayerGameModeChangeBeforeEventSignal

    This property can be read in early-execution mode.

    playerInteractWithBlock: PlayerInteractWithBlockBeforeEventSignal

    Fires before a player interacts with a block.

    This property can be read in early-execution mode.

    playerInteractWithEntity: PlayerInteractWithEntityBeforeEventSignal

    Fires before a player interacts with an entity.

    This property can be read in early-execution mode.

    playerLeave: PlayerLeaveBeforeEventSignal

    Fires when a player leaves the game.

    This property can be read in early-execution mode.

    playerPlaceBlock: PlayerPlaceBlockBeforeEventSignal

    This event fires before a block is placed by a player.

    This property can be read in early-execution mode.

    weatherChange: WeatherChangeBeforeEventSignal

    This property can be read in early-execution mode.

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