first push！

build.gradle

@@ -20,6 +20,9 @@ group = mod_group_id
 
 repositories {
     mavenLocal()
+    maven {
+        url "https://cursemaven.com"
+    }
 }
 
 base {
@@ -97,6 +100,7 @@ dependencies {
     // And its provides the option to then use net.minecraft as the group, and one of; client, server or joined as the module name, plus the game version as version.
     // For all intends and purposes: You can treat this dependency as if it is a normal library you would use.
     implementation "net.neoforged:neoforge:${neo_version}"
+    implementation "curse.maven:cloth-config-348521:5424576"
 
     // Example optional mod dependency with JEI
     // The JEI API is declared for compile time use, while the full JEI artifact is used at runtime

gradle.properties

@@ -26,18 +26,18 @@ loader_version_range=[4,)
 
 # The unique mod identifier for the mod. Must be lowercase in English locale. Must fit the regex [a-z][a-z0-9_]{1,63}
 # Must match the String constant located in the main mod class annotated with @Mod.
-mod_id=examplemod
+mod_id=thinkbeforedrop
 # The human-readable display name for the mod.
-mod_name=Example Mod
+mod_name=Think Before Drop
 # The license of the mod. Review your options at https://choosealicense.com/. All Rights Reserved is the default.
-mod_license=All Rights Reserved
+mod_license=MIT
 # The mod version. See https://semver.org/
-mod_version=1.0.0
+mod_version=2.1
 # The group ID for the mod. It is only important when publishing as an artifact to a Maven repository.
 # This should match the base package used for the mod sources.
 # See https://maven.apache.org/guides/mini/guide-naming-conventions.html
-mod_group_id=com.example.examplemod
+mod_group_id=com.haoooozhang
 # The authors of the mod. This is a simple text string that is used for display purposes in the mod list.
-mod_authors=YourNameHere, OtherNameHere
+mod_authors=HaooooZhang, IAFEnvoy
 # The description of the mod. This is a simple multiline text string that is used for display purposes in the mod list.
-mod_description=Example mod description.\nNewline characters can be used and will be replaced properly.
+mod_description=Press Q twice before drop specific items

src/main/java/net/haoooozhang/thinkbeforedrop/DropManager.java

@@ -0,0 +1,91 @@
+package net.haoooozhang.thinkbeforedrop;
+
+import me.shedaniel.autoconfig.AutoConfig;
+import net.minecraft.core.component.DataComponents;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.*;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.ShulkerBoxBlock;
+import net.neoforged.api.distmarker.Dist;
+import net.neoforged.api.distmarker.OnlyIn;
+
+@OnlyIn(Dist.CLIENT)
+public class DropManager {
+    private static long lastDropTime = 0;
+    private static int lastSlot = -1;
+    private static boolean dropped = false;
+
+    private static boolean shouldHandleDrop(ItemStack stack){
+        ModConfig config = AutoConfig.getConfigHolder(ModConfig.class).getConfig();
+        if (!config.configenable) return false;
+        Item item = stack.getItem();
+        Block block = null;
+        if (item instanceof BlockItem)
+            block = ((BlockItem) item).getBlock();
+        ResourceLocation location = Registries.ITEM.location();//有问题
+        assert location != null;
+        String name = location.toString();
+        if (config.internal.weapon)
+            if (item instanceof SwordItem || item instanceof BowItem || item instanceof CrossbowItem || item instanceof TridentItem || item instanceof ArrowItem)
+                return true;
+        if (config.internal.tool)
+            if (item instanceof AxeItem || item instanceof PickaxeItem || item instanceof ShovelItem || item instanceof HoeItem)
+                return true;
+        if (config.internal.shulkerBox)
+            if (block != null)
+                if (block instanceof ShulkerBoxBlock)
+                    return true;
+        if (config.internal.armor)
+            if (item instanceof ArmorItem || item instanceof ElytraItem)
+                return true;
+        //ore todo
+        if (config.internal.disc)
+            if (item instanceof DiscFragmentItem || item.components().has(DataComponents.JUKEBOX_PLAYABLE))
+                return true;
+        if (config.internal.uncommon)
+            if (item.components().has(DataComponents.RARITY) == Rarity.UNCOMMON)
+                return true;
+        if (config.internal.rare)
+            if (item.components().has(DataComponents.RARITY) == Rarity.RARE)
+                return true;
+        if (config.internal.epic)
+            if (item.components().has(DataComponents.RARITY) == Rarity.EPIC)
+                return true;
+        if (config.internal.enchanted) {
+            if (stack.isEnchanted())
+                return true;
+        }
+        //hasNBT Todo
+        //hasComponent Todo
+        if (config.internal.enchantedBook)
+            if (item instanceof EnchantedBookItem)
+                return true;
+        if (config.internal.book)
+            if (item instanceof WritableBookItem || item instanceof WrittenBookItem)
+                return true;
+        return config.custom.customItems.contains(name);
+    }
+    public static boolean shouldThrow(ItemStack stack, int slot) {
+        ModConfig config = AutoConfig.getConfigHolder(ModConfig.class).getConfig();
+        if (slot != lastSlot) {
+            lastDropTime = 0;
+            dropped = false;
+        }
+        if (!shouldHandleDrop(stack) || dropped) return true;
+        long now = System.currentTimeMillis();
+        if (now - lastDropTime >= config.time.minSecond * 1000 && now - lastDropTime <= config.time.maxSecond * 1000) {
+            if (stack.getCount() != 1)
+                dropped = true;
+            lastDropTime = 0;
+            return true;
+        }
+        lastDropTime = now;
+        lastSlot = slot;
+        return false;
+    }
+    public static Component getWarningText() {
+        return Component.translatable("tbt.warning");
+    }
+}

src/main/java/net/haoooozhang/thinkbeforedrop/ModConfig.java

@@ -0,0 +1,54 @@
+package net.haoooozhang.thinkbeforedrop;
+
+import me.shedaniel.autoconfig.ConfigData;
+import me.shedaniel.autoconfig.annotation.Config;
+import me.shedaniel.autoconfig.annotation.ConfigEntry;
+import net.neoforged.api.distmarker.Dist;
+import net.neoforged.api.distmarker.OnlyIn;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@OnlyIn(Dist.CLIENT)
+@Config(name = ThinkBeforeDrop.MODID)
+public class ModConfig implements ConfigData {
+    public boolean configenable = true;
+    @ConfigEntry.Gui.CollapsibleObject
+    public Time time = new Time();
+    @ConfigEntry.Gui.CollapsibleObject
+    public Internal internal = new Internal();
+    @ConfigEntry.Gui.CollapsibleObject
+    public Custom custom = new Custom();
+
+    //设置两次按下Q的允许间隔
+    @Config(name = "time")
+    public static class Time implements ConfigData {
+        public double minSecond = 0.5;
+        public double maxSecond = 5;
+    }
+
+    //配置表
+    @Config(name = "internal")
+    public static class Internal implements ConfigData {
+        public boolean weapon = false;//所有武器
+        public boolean tool = false;//所有工具
+        public boolean shulkerBox = false;//所有潜影盒
+        public boolean armor = false;//所有装备
+        public boolean ore = false;//所有矿石
+        public boolean disc = false;//所有唱片
+        public boolean uncommon = false;//所有黄名物品
+        public boolean rare = false;//所有蓝名物品
+        public boolean epic = false;//所有紫名物品
+        public boolean enchanted = false;//所有有附魔的物品，包括物品有的附魔（只能指令拿到的那种）
+        public boolean hasNbt = false;//所有有特殊nbt的（不包括耐久、附魔惩罚等）
+        public boolean hasComponent = false;//有hasComponent
+        public boolean enchantedBook = false;//所有附魔书
+        public boolean book = false;//所有成书
+    }
+
+    @Config(name = "custom")
+    public static class Custom implements ConfigData {
+        public List<String> customItems = new ArrayList<>();//自定义，使用英文逗号分隔
+        public List<String> excludeItems = new ArrayList<>();//排除物品，使用英文逗号分隔
+    }
+}