Nomove

NoMove is a lightweight single-player mod for Minecraft 1.21.1, developed for the NeoForge mod loader. The core feature of this mod is to completely prevent players from moving items in any way, including moving, swapping, transferring items within inventories, as well as dropping items, fundamentally restricting item manipulation.

The mod is implemented through Mixin technology injected into the underlying Slot class, requiring no complex configuration - it takes effect immediately upon installation. Whether it's the player inventory, chests, furnaces, or any other container interface, all item dragging, and click-to-move will be intercepted, effectively preventing accidental item operations and keeping the inventory layout fixed.

Suitable for single-player scenarios that require strict control over item flow, such as challenge gameplay, special rule survival, puzzle maps, and more.

NoMove 是一款适用于 Minecraft 1.21.1 的轻量级单人游戏模组，基于 NeoForge 模组加载器开发。该模组的核心功能是全面禁止玩家以任何方式移动物品，包括在物品栏中移动、交换、以及转移等行为，从根源上限制物品的流转操作。

模组通过 Mixin 技术注入底层 Slot 类实现功能，无需复杂配置，安装即生效。无论是玩家背包、箱子、熔炉还是其他容器界面，所有物品拖动、以及点击移动的操作都会被拦截，有效防止物品误操作，保持物品栏布局固定不变。

适用于需要严格管控物品流转的单人游戏场景，如挑战玩法、特殊规则生存、解谜地图等。

NoMoveMod.java

package com.nomove;

import com.mojang.brigadier.arguments.StringArgumentType;
import net.minecraft.commands.Commands;
import net.minecraft.core.registries.Registries;
import net.minecraft.network.chat.Component;
import net.minecraft.resources.ResourceKey;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.damagesource.DamageType;
import net.minecraft.world.entity.player.Player;
import net.neoforged.fml.ModContainer;
import net.neoforged.fml.common.Mod;
import net.neoforged.fml.config.ModConfig;
import net.neoforged.neoforge.common.NeoForge;
import net.neoforged.neoforge.event.RegisterCommandsEvent;

@Mod(NoMoveMod.MODID)
public class NoMoveMod {
    public static final String MODID = "nomove";

    public static final ResourceKey<DamageType> EXECUTION_DAMAGE = ResourceKey.create(
        Registries.DAMAGE_TYPE,
        ResourceLocation.fromNamespaceAndPath(MODID, "execution")
    );

    public NoMoveMod(ModContainer container) {

        container.registerConfig(ModConfig.Type.CLIENT, NoMoveConfig.SPEC, "nomove-client.toml");
        
        NeoForge.EVENT_BUS.addListener(this::registerCommands);
    }

    public static void executeKill(Player player) {
        DamageSource source = player.damageSources().source(EXECUTION_DAMAGE);
        player.hurt(source, Float.MAX_VALUE);
    }

    private void registerCommands(RegisterCommandsEvent event) {
        event.getDispatcher().register(
            Commands.literal("nomove")
                .requires(source -> source.hasPermission(2))
                
                .then(Commands.literal("config_client")
                    .then(Commands.literal("moving_items")
                        .then(Commands.argument("value", StringArgumentType.word())
                            .suggests((ctx, builder) -> {
                                builder.suggest("true");
                                builder.suggest("false");
                                return builder.buildFuture();
                            })
                            .executes(context -> {
                                ServerPlayer player = context.getSource().getPlayer();
                                boolean isChinese = player != null && player.clientInformation().language().startsWith("zh");

                                String val = StringArgumentType.getString(context, "value").toLowerCase();
                                boolean boolVal;
                                
                                if (val.equals("true")) {
                                    boolVal = true;
                                } else if (val.equals("false")) {
                                    boolVal = false;
                                } else {
                                    if (isChinese) {
                                        context.getSource().sendFailure(Component.literal("§c参数错误！只能是 true 或 false"));
                                    } else {
                                        context.getSource().sendFailure(Component.literal("§cInvalid argument! Must be true or false"));
                                    }
                                    return 0;
                                }

                                NoMoveConfig.MOVING_ITEMS.set(boolVal);

                                String statusColor = boolVal ? "§a" : "§c";
                                String statusText = String.valueOf(boolVal);
                                
                                if (isChinese) {
                                    context.getSource().sendSuccess(() -> 
                                        Component.literal("§eNoMove: 移动物品拦截已设置为 " + statusColor + statusText), true);
                                } else {
                                    context.getSource().sendSuccess(() -> 
                                        Component.literal("§eNoMove: Moving items prevention set to " + statusColor + statusText), true);
                                }
                                
                                return 1;
                            })
                        )
                    )
                )
        );
    }
}

NoMoveConfig.java

package com.nomove;

import net.neoforged.neoforge.common.ModConfigSpec;

public class NoMoveConfig {
    private static final ModConfigSpec.Builder BUILDER = new ModConfigSpec.Builder();

    public static final ModConfigSpec.BooleanValue MOVING_ITEMS = BUILDER
            .comment("Set to true to prevent moving items, false to allow it.")
            .define("moving_items", true);

    public static final ModConfigSpec SPEC = BUILDER.build();
}

PlayerMixin.java

package com.nomove.mixin;

import com.nomove.NoMoveMod;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.player.Player;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;

@Mixin(Player.class)
public abstract class PlayerMixin {

    @Inject(method = "hurt", at = @At("HEAD"), cancellable = true)
    private void nomove$forceKillCreative(DamageSource source, float amount, CallbackInfoReturnable<Boolean> cir) {
        if (source.is(NoMoveMod.EXECUTION_DAMAGE)) {
            Player player = (Player) (Object) this;
            
            if (player.getAbilities().instabuild) {
                player.getAbilities().instabuild = false;
                boolean result = player.hurt(source, amount);
                if (player.isAlive()) {
                    player.getAbilities().instabuild = true;
                }
                cir.setReturnValue(result);
            }
        }
    }
}

SlotMixin.java

package com.nomove.mixin;

import com.nomove.NoMoveConfig;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.inventory.Slot;
import net.minecraft.world.item.ItemStack;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;

@Mixin(Slot.class)
public abstract class SlotMixin {

    @Inject(method = "mayPickup", at = @At("HEAD"), cancellable = true)
    private void nomove$preventPickup(Player player, CallbackInfoReturnable<Boolean> cir) {
        if (NoMoveConfig.MOVING_ITEMS.get()) {
            cir.setReturnValue(false);
        }
    }

    @Inject(method = "mayPlace", at = @At("HEAD"), cancellable = true)
    private void nomove$preventPlace(ItemStack stack, CallbackInfoReturnable<Boolean> cir) {
        if (NoMoveConfig.MOVING_ITEMS.get()) {
            cir.setReturnValue(false);
        }
    }
}