6金属探测器

这一节我们主要做一个金属探测器，该金属探测器可以向玩家脚下64个高度探测是否有钻石或者铁，如果有的话，会告诉具体的坐标，并且会减少一点耐久

金属探测器代码

public class MetalDetectorItem extends Item {
    public MetalDetectorItem(Settings settings) {
        super(settings);
    }

    @Override
    public ActionResult useOnBlock(ItemUsageContext context) {
        if(!context.getWorld().isClient()) {
            BlockPos positionClicked = context.getBlockPos();
            PlayerEntity player = context.getPlayer();
            boolean foundBlock = false;
            for(int i = 0; i <= positionClicked.getY() + 64; i++) {
                BlockState state = context.getWorld().getBlockState(positionClicked.down(i));
                if(isValuableBlock(state)) {
                    outputValuableCoordinates(positionClicked.down(i), player, state.getBlock());
                    foundBlock = true;
                    break;
                }
            }
            if(!foundBlock) {
                player.sendMessage(Text.literal("没有找到任何有价值的矿石!"));
            }
        }

        context.getStack().damage(1, context.getPlayer(),
                EquipmentSlot.MAINHAND);

        return ActionResult.SUCCESS;
    }

    private void outputValuableCoordinates(BlockPos blockPos, PlayerEntity player, Block block) {
        player.sendMessage(Text.literal("找到" + block.asItem().getName().getString() + " at " +
                "(" + blockPos.getX() + ", " + blockPos.getY() + ", " + blockPos.getZ() + ")"), false);
    }

    private boolean isValuableBlock(BlockState state) {
        return state.isOf(Blocks.IRON_ORE) || state.isOf(Blocks.DIAMOND_ORE);
    }

注册物品

public class ModItems {
    public static final Item RUBY = registerItem("ruby", new Item(new Item.Settings()));
    public static final Item RAW_RUBY = registerItem("raw_ruby", new Item(new Item.Settings()));

    // //这里是注册金属探测器
    public static final Item METAL_DETECTOR = registerItem("metal_detector", new MetalDetectorItem(new Item.Settings().maxCount(1).maxDamage(64)));

    public static void registerModItems() {
        DemoMod1.LOGGER.info("Registering items");
        ItemGroupEvents.modifyEntriesEvent(ItemGroups.INGREDIENTS)
                .register(ModItems::addItemsToIngredientTabItemGroup);
    }

    public static void addItemsToIngredientTabItemGroup(FabricItemGroupEntries entries) {
        entries.add(RUBY);
        entries.add(RAW_RUBY);
        entries.add(METAL_DETECTOR); //这里是注册金属探测器
    }


    public static Item registerItem(String name, Item item) {
        DemoMod1.LOGGER.info("Registering item " + name);
        Registry.register(Registries.ITEM, new Identifier(DemoMod1.MOD_ID, name), item);
        return item;
    }

将其添加到我们的物品组中

public class ModItemGroups {
    public static final ItemGroup RUBY_GROUP = Registry.register(Registries.ITEM_GROUP,
            new Identifier(DemoMod1.MOD_ID, "ruby"),
            FabricItemGroup.builder().displayName(Text.translatable("itemgroup.ruby"))
                    .icon(() -> new ItemStack(ModItems.RUBY)).entries((displayContext, entries) -> {
                        entries.add(ModItems.RUBY);
                        entries.add(ModItems.RAW_RUBY);
                        entries.add(Items.DIAMOND);
                        entries.add(ModBlocks.RUBY_BLOCK);
                        entries.add(ModBlocks.RAW_RUBY_BLOCK);

                        entries.add(ModBlocks.RUBY_ORE);
                        entries.add(ModBlocks.DEEPSLATE_RUBY_ORE);
                        entries.add(ModBlocks.NETHER_RUBY_ORE);
                        entries.add(ModBlocks.END_STONE_RUBY_ORE);
                        entries.add(ModItems.METAL_DETECTOR);
                    }).build());
    public static void registerItemGroups() {
        DemoMod1.LOGGER.info("Registering Item Groups for " + DemoMod1.MOD_ID);
    }
}

效果展示

当有铁的时候，会给出提示

6金属探测器

金属探测器代码​

金属探测器代码