注册了蝴蝶弹

src/main/java/com/atsuishio/superbwarfare/compat/CompatHolder.java

@@ -2,6 +2,8 @@ package com.atsuishio.superbwarfare.compat;
 
 import com.atsuishio.superbwarfare.compat.clothconfig.ClothConfigHelper;
 import net.minecraft.world.effect.MobEffect;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.entity.projectile.Projectile;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 import net.minecraftforge.fml.DistExecutor;
@@ -23,6 +25,9 @@ public class CompatHolder {
     @ObjectHolder(registryName = "minecraft:mob_effect", value = VRC + ":curse_flame")
     public static final MobEffect VRC_CURSE_FLAME = null;
 
+    @ObjectHolder(registryName = "minecraft:entity_type", value = VRC + ":rain_shower_butterfly")
+    public static final EntityType<? extends Projectile> VRC_RAIN_SHOWER_BUTTERFLY = null;
+
     @SubscribeEvent
     public static void onInterModEnqueue(final InterModEnqueueEvent event) {
         event.enqueueWork(() -> hasMod(CLOTH_CONFIG, () -> DistExecutor.safeRunWhenOn(Dist.CLIENT, () -> ClothConfigHelper::registerScreen)));

src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java

@@ -1,25 +1,28 @@
 package com.atsuishio.superbwarfare.event;
 
 import com.atsuishio.superbwarfare.ModUtils;
+import com.atsuishio.superbwarfare.compat.CompatHolder;
 import com.atsuishio.superbwarfare.entity.projectile.ProjectileEntity;
-import com.atsuishio.superbwarfare.network.ModVariables;
-import com.atsuishio.superbwarfare.tools.GunsTool;
-import com.atsuishio.superbwarfare.tools.SoundTool;
 import com.atsuishio.superbwarfare.event.modevent.ReloadEvent;
 import com.atsuishio.superbwarfare.init.ModItems;
 import com.atsuishio.superbwarfare.init.ModPerks;
 import com.atsuishio.superbwarfare.init.ModSounds;
 import com.atsuishio.superbwarfare.init.ModTags;
+import com.atsuishio.superbwarfare.network.ModVariables;
 import com.atsuishio.superbwarfare.perk.AmmoPerk;
 import com.atsuishio.superbwarfare.perk.Perk;
 import com.atsuishio.superbwarfare.perk.PerkHelper;
 import com.atsuishio.superbwarfare.tools.GunInfo;
+import com.atsuishio.superbwarfare.tools.GunsTool;
+import com.atsuishio.superbwarfare.tools.SoundTool;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.sounds.SoundEvent;
+import net.minecraft.util.Mth;
 import net.minecraft.world.effect.MobEffectInstance;
 import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.entity.projectile.Projectile;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.ClipContext;
 import net.minecraft.world.phys.Vec3;
@@ -186,6 +189,10 @@ public class GunEventHandler {
             boolean zoom = player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).orElse(new ModVariables.PlayerVariables()).zoom;
             var perk = PerkHelper.getPerkByType(heldItem, Perk.Type.AMMO);
 
+            if (perk != null && perk.descriptionId.equals("butterfly_bullet")) {
+                if (handleButterflyBullet(perk, heldItem, player)) return;
+            }
+
             ProjectileEntity projectile = new ProjectileEntity(player.level())
                     .shooter(player)
                     .damage(perk instanceof AmmoPerk ammoPerk && ammoPerk.slug ? projectileAmount * damage : damage)
@@ -258,6 +265,38 @@ public class GunEventHandler {
         return 1;
     }
 
+    private static boolean handleButterflyBullet(Perk perk, ItemStack heldItem, Player player) {
+        int perkLevel = PerkHelper.getItemPerkLevel(perk, heldItem);
+
+        var entityType = CompatHolder.VRC_RAIN_SHOWER_BUTTERFLY;
+        if (entityType != null) {
+            Projectile projectile = entityType.create(player.level());
+
+            float inaccuracy = Math.max(0.0f, 1.1f - perkLevel * .1f);
+            projectile.setOwner(player);
+            projectile.setPos(player.getX() - 0.1 * player.getLookAngle().x,
+                    player.getEyeY() - 0.1 - 0.1 * player.getLookAngle().y, player.getZ() + -0.1 * player.getLookAngle().z);
+
+            Vec3 vec3 = (new Vec3(player.getLookAngle().x, player.getLookAngle().y + 0.001f, player.getLookAngle().z)).normalize().scale(1.2).
+                    add(player.level().random.triangle(0.0D, 0.0172275D * (double) inaccuracy),
+                            player.level().random.triangle(0.0D, 0.0172275D * (double) inaccuracy),
+                            player.level().random.triangle(0.0D, 0.0172275D * (double) inaccuracy)).
+                    add(player.getDeltaMovement().x, player.onGround() ? 0.0 : 0.05 * player.getDeltaMovement().y, player.getDeltaMovement().z).
+                    scale(5.0f);
+            projectile.setDeltaMovement(vec3);
+            projectile.setYRot((float) (Mth.atan2(vec3.x, vec3.z) * (double) (180F / (float) Math.PI)));
+            projectile.setXRot((float) (Mth.atan2(vec3.y, vec3.horizontalDistance()) * (double) (180F / (float) Math.PI)));
+            projectile.yRotO = projectile.getYRot();
+            projectile.xRotO = projectile.getXRot();
+
+            projectile.setNoGravity(true);
+            player.level().addFreshEntity(projectile);
+            return true;
+        }
+
+        return false;
+    }
+
     /**
      * 通用的武器换弹流程
      */

src/main/java/com/atsuishio/superbwarfare/init/ModPerks.java

@@ -79,6 +79,8 @@ public class ModPerks {
         if (ModList.get().isLoaded(CompatHolder.VRC)) {
             AMMO_PERKS.register("curse_flame_bullet", () -> new AmmoPerk(new AmmoPerk.Builder("curse_flame_bullet", Perk.Type.AMMO)
                     .bypassArmorRate(0.0f).damageRate(1.2f).speedRate(0.9f).rgb(0xB1, 0xC1, 0xF2).mobEffect(() -> CompatHolder.VRC_CURSE_FLAME)));
+            AMMO_PERKS.register("butterfly_bullet", () -> new AmmoPerk(new AmmoPerk.Builder("butterfly_bullet", Perk.Type.AMMO)
+                    .bypassArmorRate(0.0f)));
         }
     }
 

src/main/resources/assets/superbwarfare/lang/en_us.json

@@ -250,6 +250,8 @@
   "des.superbwarfare.he_bullet": "The bullet will explode after hitting the target",
   "item.superbwarfare.incendiary_bullet": "Incendiary Bullet",
   "des.superbwarfare.incendiary_bullet": "The bullet will ignites the target after hitting the target",
+  "item.superbwarfare.butterfly_bullet": "Butterfly Bullet",
+  "des.superbwarfare.butterfly_bullet": "Replace the bullet with Rain Shower Butterfly",
 
   "item.superbwarfare.heal_clip": "Heal Clip",
   "des.superbwarfare.heal_clip": "Reloading after dealing a final blow will heal you and your nearby allies",

src/main/resources/assets/superbwarfare/lang/zh_cn.json

@@ -250,6 +250,8 @@
   "des.superbwarfare.he_bullet": "子弹在命中后会爆炸",
   "item.superbwarfare.incendiary_bullet": "燃烧弹",
   "des.superbwarfare.incendiary_bullet": "子弹在命中后点燃目标",
+  "item.superbwarfare.butterfly_bullet": "蝴蝶弹",
+  "des.superbwarfare.butterfly_bullet": "将子弹替换成骤雨之蝶",
 
   "item.superbwarfare.heal_clip": "治疗弹匣",
   "des.superbwarfare.heal_clip": "最后一击后短时间内填装，可治疗自身和附近队友",