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();
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