Class PlayerHotbarSelectedSlotChangeAfterEvent

Example: hotbarSlotChangeListener.ts

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

// Example of handling hotbar slot change events
function setupHotbarSlotChangeListener() {
    // Basic event subscription without options
    world.afterEvents.playerHotbarSelectedSlotChange.subscribe(
        (event: PlayerHotbarSelectedSlotChangeAfterEvent) => {
            console.log(`${event.player.name} changed hotbar selection:`);
            console.log(`Previous slot: ${event.previousSlotSelected}`);
            console.log(`New slot: ${event.newSlotSelected}`);

            if (event.itemStack) {
                console.log(
                    `Selected item: ${event.itemStack.typeId} (amount: ${event.itemStack.amount})`,
                );
            } else {
                console.log("Selected empty slot");
            }
        },
    );

    // Subscription with filtering options - only monitor specific slots
    const hotbarOptions: HotbarEventOptions = {
        allowedSlots: [0, 1, 2, 8], // Only monitor first 3 slots and last slot
    };

    world.afterEvents.playerHotbarSelectedSlotChange.subscribe(
        (event: PlayerHotbarSelectedSlotChangeAfterEvent) => {
            console.log(`Important slot change detected!`);
            console.log(`Player: ${event.player.name}`);
            console.log(
                `Changed to slot ${event.newSlotSelected} (monitored slot)`,
            );

            // React to specific slot selections
            switch (event.newSlotSelected) {
                case 0:
                    console.log("Player selected their primary weapon slot");
                    break;
                case 1:
                    console.log("Player selected their secondary tool slot");
                    break;
                case 2:
                    console.log("Player selected their utility slot");
                    break;
                case 8:
                    console.log("Player selected their special item slot");
                    break;
            }
        },
        hotbarOptions,
    );
}

// Call this function to set up the event listeners
setupHotbarSlotChangeListener();
Copy