ExampleEvents.java

package com.example.examplemod;

import net.fabricmc.fabric.api.event.lifecycle.v1.ServerTickEvents;
import net.fabricmc.fabric.api.event.player.PlayerBlockBreakEvents;
import net.minecraft.server.MinecraftServer;
import net.minecraft.text.Text;

/**
 * Example event listeners. Register these inside ModInitializer#onInitialize().
 * Event API has not had breaking changes across 1.21.7 - 1.21.11.
 */
public final class ExampleEvents {

    private ExampleEvents() {}

    public static void register() {

        // Fires right before a block is broken; return false to cancel it.
        PlayerBlockBreakEvents.BEFORE.register((world, player, pos, state, entity) -> {
            if (state.getBlock() == ExampleMod.EXAMPLE_BLOCK) {
                player.sendMessage(Text.literal("You're breaking the example block!"), true);
            }
            return true; // allow the break
        });

        // Fires once per server tick (20x/sec). Useful for timers, scheduled tasks, etc.
        ServerTickEvents.END_SERVER_TICK.register(ExampleEvents::onServerTick);
    }

    private static int tickCounter = 0;

    private static void onServerTick(MinecraftServer server) {
        tickCounter++;
        if (tickCounter % 200 == 0) { // every 10 seconds
            server.getPlayerManager().broadcast(
                    Text.literal("Server has been running for " + (tickCounter / 20) + " seconds."),
                    false
            );
        }
    }
}