cheat.java

import net.fabricmc.api.ClientModInitializer;
import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
import net.minecraft.client.MinecraftClient;
import net.minecraft.client.options.KeyBinding;
import net.minecraft.client.util.InputUtil;
import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
import net.minecraft.text.Text;
import org.lwjgl.glfw.GLFW;

public class CheatMod implements ModInitializer {

    private static KeyBinding flyKeyBinding;
    private static boolean isFlyEnabled = false;

    @override
    public void onInitialize() {
        flyKeyBinding = KeyBindingHelper.registerKeyBinding(new KeyBinding(
                "key.cheatmod.fly",
                InputUtil.Type.KEYSYM,
                GLFW.GLFW_KEY_G,
                "category.cheatmod.keys"
        ));

        ClientTickEvents.END_CLIENT_TICK.register(client -> {
            while (flyKeyBinding.wasPressed()) {
                isFlyEnabled = !isFlyEnabled;
                if (client.player != null) {
                    client.player.getAbilities().allowFlying = isFlyEnabled;
                    client.player.getAbilities().flying = isFlyEnabled;

                    String status = isFlyEnabled ? "enabled" : "disabled";
                    client.player.sendMessage(Text.of("Fly mode " + status), true);
                }
        });
    }
}