Minecraft 1.18.1, 1.18.2 module development 22 Sniper rifle

Minecraft 1.18.1、1.18.2 Module development 05. The emitter + Missiles

Today we implement a sniper gun in the module .

1. With the first 5 This tutorial is similar , We need to make models of guns and bullets first :

However, this time we hope that the sniper gun will enter the opening state when the Deputy , So we need to set up a first person field of view of the sniper gun in the form of an assistant .

Then export as .json file , Will export .json File put in resources\assets\ Your module name \models\item in :

2. stay Items Create a new item class of our bullets in the bag ItemSniperAmmo:

ItemSniperAmmo

package com.joy187.re8joymod.items;

import com.joy187.re8joymod.Main;
import com.joy187.re8joymod.entity.EntitySniperAmmo;

import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Item.Properties;
import net.minecraft.world.level.Level;

public class ItemSniperAmmo extends Item {
    public ItemSniperAmmo() {
        super(new Properties().tab(Main.TUTORIAL_TAB).stacksTo(16));
    }

    public EntitySniperAmmo createArrow(Level p_200887_1_, ItemStack p_200887_2_, LivingEntity p_200887_3_) {
        EntitySniperAmmo arrowentity = new EntitySniperAmmo(p_200887_1_, p_200887_3_);
        return arrowentity;
    }


    public boolean isInfinite(ItemStack stack, ItemStack bow, net.minecraft.world.entity.player.Player player) {
        int enchant = net.minecraft.world.item.enchantment.EnchantmentHelper.getItemEnchantmentLevel(net.minecraft.world.item.enchantment.Enchantments.INFINITY_ARROWS, bow);
        return enchant <= 0 ? false : this.getClass() == ItemSniperAmmo.class;
     }
}

stay Init Bag ItemInit Class to add our throwing object declaration :

ItemInit.java

public class ItemInit {
    public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS,
            Main.MOD_ID);

    // Our throw item statement 
    public static RegistryObject<Item> SNIPERAMMO = ITEMS.register("sniperammo",()->
    {
        return new ItemSniperAmmo();
    });

    private static <T extends Item> RegistryObject<T> register(final String name, final Supplier<T> item) {
        return ITEMS.register(name, item);
    }

}

3. stay entity Create our bullet entity class in the package EntitySniperAmmo

EntitySniperAmmo.java

package com.joy187.re8joymod.entity;

import com.joy187.re8joymod.init.EntityInit;
import com.joy187.re8joymod.init.ItemInit;

import io.netty.buffer.Unpooled;
import net.minecraft.network.FriendlyByteBuf;
import net.minecraft.network.protocol.Packet;
import net.minecraft.network.syncher.EntityDataAccessor;
import net.minecraft.network.syncher.EntityDataSerializers;
import net.minecraft.network.syncher.SynchedEntityData;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.monster.AbstractSkeleton;
import net.minecraft.world.entity.monster.Blaze;
import net.minecraft.world.entity.monster.Ravager;
import net.minecraft.world.entity.projectile.ThrowableItemProjectile;
import net.minecraft.world.item.Item;
import net.minecraft.world.level.Level;
import net.minecraft.world.phys.EntityHitResult;
import net.minecraftforge.network.NetworkHooks;


public class EntitySniperAmmo extends ThrowableItemProjectile{
    
	public int explosionPower = 1,id=91082;
    public double damage;
    private int ticksInGround;
    private static final EntityDataAccessor<Integer> ID_EFFECT_COLOR = SynchedEntityData.defineId(EntitySniperAmmo.class, EntityDataSerializers.INT);

	
	public EntitySniperAmmo(EntityType<?> entityIn, Level level) {
		super((EntityType<? extends EntitySniperAmmo>) entityIn, level);
        //this.size(1.0F, 1.0F);
        this.damage = 24D;
		// TODO Auto-generated constructor stub
	}
	
	public EntitySniperAmmo(Level world, LivingEntity entity) {
	    super(EntityInit.SNIPERAMMO.get(), entity, world);
	    this.damage= 24D;
	}
	
	// Our bullets are bound to previous items 
	@Override
	protected Item getDefaultItem() {
		return ItemInit.SNIPERAMMO.get();
	}
	   
	// Damage caused when an object strikes an entity 
    protected void onHitEntity(EntityHitResult result) {
        super.onHitEntity(result);
        Entity entity = result.getEntity();


        int i = 24;
        if(entity instanceof Blaze || entity instanceof Ravager){
            i = 28;
        }
        if(entity instanceof EntityBei || entity instanceof EntityHeisen){
            i= 35;
        }
        if(entity instanceof EntityUrias || entity instanceof EntityUriass){
            i= 25;
        }
        if(entity instanceof EntityLycana || entity instanceof AbstractSkeleton){
            i= 45;
        }
        entity.hurt(DamageSource.thrown(this, this.getOwner()), (float)(i+random.nextFloat()*0.5*this.damage));

    }
    
    
    protected void onHit(EntityHitResult p_70227_1_) {
        super.onHit(p_70227_1_);
        if (!this.level.isClientSide) {
            this.level.broadcastEntityEvent(this, (byte)3);
            this.remove(Entity.RemovalReason.KILLED);
        }
    }
    
    @Override
    public Packet<?> getAddEntityPacket() {
    	FriendlyByteBuf pack = new FriendlyByteBuf(Unpooled.buffer());
        pack.writeDouble(getX());
        pack.writeDouble(getY());
        pack.writeDouble(getZ());
        pack.writeInt(getId());
        pack.writeUUID(getUUID());

        return NetworkHooks.getEntitySpawningPacket(this);

    }
    
}

4. Render our missiles ,render Create a new rendering class in the package RenderSniperAmmo

RenderSniperAmmo.java

package com.joy187.re8joymod.entity.render;

import com.joy187.re8joymod.Main;
import com.joy187.re8joymod.entity.EntitySniperAmmo;
import com.mojang.blaze3d.vertex.PoseStack;
import com.mojang.blaze3d.vertex.VertexConsumer;
import com.mojang.math.Matrix3f;
import com.mojang.math.Matrix4f;
import com.mojang.math.Vector3f;

import net.minecraft.client.renderer.MultiBufferSource;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.client.renderer.block.model.ItemTransforms;
import net.minecraft.client.renderer.entity.EntityRenderer;
import net.minecraft.client.renderer.entity.EntityRendererProvider;
import net.minecraft.client.renderer.entity.ItemRenderer;
import net.minecraft.client.renderer.texture.OverlayTexture;
import net.minecraft.core.BlockPos;
import net.minecraft.resources.ResourceLocation;


public class RenderSniperAmmo extends EntityRenderer<EntitySniperAmmo> {

    // The mapping position of your bullet 
	public static final ResourceLocation TEXTURE = new ResourceLocation(Main.MOD_ID ,"textures/item/zhihu.png");
	private static final float MIN_CAMERA_DISTANCE_SQUARED = 12.25F;
	private final ItemRenderer itemRenderer;
	   private final float scale;
	   private final boolean fullBright;
	   
    public RenderSniperAmmo(EntityRendererProvider.Context manager) {
        //this.itemRenderer = manager.getItemRenderer();
        super(manager);
        this.itemRenderer=manager.getItemRenderer();
        this.scale=0.25F;
        this.fullBright=false;

     }
    

    private static final RenderType field_229044_e_ = RenderType.entityCutoutNoCull(TEXTURE);


    protected int getSkyLightLevel(EntitySniperAmmo p_239381_1_, BlockPos p_239381_2_) {
        return 1;
    }
    @Override
    public ResourceLocation getTextureLocation(EntitySniperAmmo p_110775_1_) {
        return TEXTURE;
    }
    
    public void render(EntitySniperAmmo entityIn, float entityYaw, float partialTicks, PoseStack poseStackIn, MultiBufferSource bufferIn, int packedLightIn) {
        if (entityIn.tickCount >= 2 || !(this.entityRenderDispatcher.camera.getEntity().distanceToSqr(entityIn) < 12.25D)) {
           poseStackIn.pushPose();
           poseStackIn.scale(this.scale, this.scale, this.scale);
           poseStackIn.mulPose(this.entityRenderDispatcher.cameraOrientation());
           poseStackIn.mulPose(Vector3f.YP.rotationDegrees(180.0F));
           this.itemRenderer.renderStatic(entityIn.getItem(), ItemTransforms.TransformType.GROUND, packedLightIn, OverlayTexture.NO_OVERLAY, poseStackIn, bufferIn, entityIn.getId());
           poseStackIn.popPose();
           super.render(entityIn, entityYaw, partialTicks, poseStackIn, bufferIn, packedLightIn);
           
        }
     }
    
    private static void vertexRender(VertexConsumer p_229045_0_, Matrix4f p_229045_1_, Matrix3f p_229045_2_, int p_229045_3_, float p_229045_4_, int p_229045_5_, int p_229045_6_, int p_229045_7_) {
        p_229045_0_.vertex(p_229045_1_, p_229045_4_ - 0.5F, (float)p_229045_5_ - 0.25F, 0.0F).color(255, 255, 255, 255).overlayCoords(OverlayTexture.NO_OVERLAY).normal(p_229045_2_, 0.0F, 1.0F, 0.0F).endVertex();
    }

}

stay ClientModEventSubscriber.java Add the rendering event registration of our throwing object :

ClientModEventSubscriber.java

package com.joy187.re8joymod;

import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventBusSubscriber;
import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent;

import com.joy187.re8joymod.entity.EntityRe8Dimi;
import com.joy187.re8joymod.entity.model.ModelRe8Dimi;
import com.joy187.re8joymod.entity.render.RenderMoSpitter;
import com.joy187.re8joymod.entity.render.RenderRe8Dimi;
import com.joy187.re8joymod.init.EntityInit;

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.entity.EntityRendererProvider;
import net.minecraft.client.renderer.entity.ThrownItemRenderer;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntityType;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.client.event.EntityRenderersEvent;
import net.minecraftforge.event.entity.EntityAttributeCreationEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;

@Mod.EventBusSubscriber(modid = Main.MOD_ID, value = Dist.CLIENT, bus = Mod.EventBusSubscriber.Bus.MOD)
public class ClientModEventSubscriber
{

    @SubscribeEvent
    public static void onRegisterLayers(EntityRenderersEvent.RegisterLayerDefinitions event) {
        event.registerLayerDefinition(ModelRe8Dimi.LAYER_LOCATION, ModelRe8Dimi::createBodyLayer);
    }

    @SubscribeEvent
    public static void onRegisterRenderer(EntityRenderersEvent.RegisterRenderers event) {
        event.registerEntityRenderer(EntityInit.RE8DIMI.get(), RenderRe8Dimi::new);

        // Add rendering events for our missiles 
        event.registerEntityRenderer(EntityInit.SNIPERAMMO.get(), RenderSniperAmmo::new);

    }

    @SubscribeEvent
    public static void onAttributeCreate(EntityAttributeCreationEvent event) {
        event.put(EntityInit.RE8DIMI.get(), EntityRe8Dimi.prepareAttributes().build());
    }
} 

5. The bullet is finished , Come to the firearms section . stay Item Our new sniper guns ItemF2

ItemF2.java

package com.joy187.re8joymod.items;

import java.util.List;
import java.util.function.Predicate;

import javax.annotation.Nullable;

import com.joy187.re8joymod.ClientModEventSubscriber;
import com.joy187.re8joymod.Main;
import com.joy187.re8joymod.entity.EntitySniperAmmo;
import com.joy187.re8joymod.init.ItemInit;
import com.joy187.re8joymod.init.SoundInit;

import net.minecraft.ChatFormatting;
import net.minecraft.client.Minecraft;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.TextComponent;
import net.minecraft.sounds.SoundSource;
import net.minecraft.stats.Stats;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResultHolder;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.ProjectileWeaponItem;
import net.minecraft.world.item.TooltipFlag;
import net.minecraft.world.item.Vanishable;
import net.minecraft.world.item.enchantment.EnchantmentHelper;
import net.minecraft.world.item.enchantment.Enchantments;
import net.minecraft.world.level.Level;


public class ItemF2 extends ProjectileWeaponItem implements Vanishable {

    public ItemF2() {
        super(new ItemF2.Properties().tab(Main.TUTORIAL_TAB).stacksTo(1));
    }
    
	public ItemF2(Item.Properties name) {
		  super(name);
	}

    public void releaseUsing(ItemStack p_77615_1_, Level level, LivingEntity p_77615_3_, int p_77615_4_) {
        if (p_77615_3_ instanceof Player) {
            Player Player = (Player)p_77615_3_;
            //OneHandedPose.renderFirstPersonArms(Player, Player.HAND_SLOTS, p_77615_1_, Player.getPose(), Player.buffer, p_77615_4_, p_77615_4_);
            
            boolean flag = Player.getAbilities().instabuild || EnchantmentHelper.getItemEnchantmentLevel(Enchantments.INFINITY_ARROWS, p_77615_1_) > 0;
//            ItemStack itemstack = Player.getProjectile(p_77615_1_);

            ItemStack itemstack = this.findAmmo(Player);

            int i = this.getUseDuration(p_77615_1_) - p_77615_4_;
            i = net.minecraftforge.event.ForgeEventFactory.onArrowLoose(p_77615_1_, level, Player, i, !itemstack.isEmpty() || flag);
            if (i < 0) return;

            if (!itemstack.isEmpty() || flag) {
                if (itemstack.isEmpty()) {
                    itemstack = new ItemStack(ItemInit.SNIPERAMMO.get().asItem());
                }

                float f = getPowerForTime(i);
                if (!((double)f < 0.1D)) {
                    boolean flag1 = Player.getAbilities().instabuild || (itemstack.getItem() instanceof ItemSniperAmmo && ((ItemSniperAmmo)itemstack.getItem()).isInfinite(itemstack, p_77615_1_, Player));
                    if (!level.isClientSide) {
                        ItemSniperAmmo arrowitem = (ItemSniperAmmo)(itemstack.getItem() instanceof ItemSniperAmmo ? itemstack.getItem() : ItemInit.SNIPERAMMO.get().asItem());
                        EntitySniperAmmo abstractarrowentity = arrowitem.createArrow(level, itemstack, Player);

                        abstractarrowentity = customArrow(abstractarrowentity);
                        //abstractarrowentity.setItem(itemstack);
                        abstractarrowentity.shootFromRotation(Player, Player.getXRot(), Player.getYRot(), 0.2F, f * 30.0F, 0.75F);

                        abstractarrowentity.level.addParticle(ParticleTypes.FLAME, abstractarrowentity.getX(), abstractarrowentity.getY(), abstractarrowentity.getZ(), abstractarrowentity.position().x , abstractarrowentity.position().y, abstractarrowentity.position().z);
                        abstractarrowentity.playSound(SoundInit.R2FIRE.get(), 4.5F,4.5F);


                        if (EnchantmentHelper.getItemEnchantmentLevel(Enchantments.FLAMING_ARROWS, p_77615_1_) > 0) {
                            abstractarrowentity.setSecondsOnFire(100);
                        }

                        p_77615_1_.hurtAndBreak(1, Player, (p_220009_1_) -> {
                            p_220009_1_.broadcastBreakEvent(Player.getUsedItemHand());
                        });


                        abstractarrowentity.level.addParticle(ParticleTypes.FLAME, abstractarrowentity.getX(), abstractarrowentity.getY(), abstractarrowentity.getZ(), abstractarrowentity.position().x * -0.2D, 0.08D, abstractarrowentity.position().z * -0.2D);

                        level.addFreshEntity(abstractarrowentity);
                    }
                    
                    // The sound emitted 
                    level.playSound((Player)null, Player.getX(), Player.getY(), Player.getZ(), SoundInit.R2FIRE.get(), SoundSource.PLAYERS, 4.5F, 4.5F / (Player.getRandom().nextFloat() * 0.2F + 1.2F) + f * 0.5F);
                    if (!flag1 && !Player.getAbilities().instabuild) {
                        itemstack.shrink(1);
                        if (itemstack.isEmpty()) {
                            Player.getInventory().removeItem(itemstack);
                        }
                    }
                    
                    // After each successful launch, the interval 1.5s Launch again (30=20*1.5)
                    Player.getCooldowns().addCooldown(this, 30);

                    Player.awardStat(Stats.ITEM_USED.get(this));
                }
            }
        }
    }

    public InteractionResultHolder<ItemStack> use(Level level, Player palyerIn, InteractionHand handIn) {
        ItemStack itemstack = palyerIn.getItemInHand(handIn);
        boolean flag = !this.findAmmo(palyerIn).isEmpty();

        InteractionResultHolder<ItemStack> ret = net.minecraftforge.event.ForgeEventFactory.onArrowNock(itemstack, level, palyerIn, handIn, flag);
        if (ret != null) return ret;

        if (!palyerIn.getAbilities().instabuild && !flag) {
            return InteractionResultHolder.fail(itemstack);
        } else {
            palyerIn.startUsingItem(handIn);
            return InteractionResultHolder.consume(itemstack);
        }
    }

    public static float getPowerForTime(int p_185059_0_) {
        float f = (float)p_185059_0_ / 20.0F;
        f = (f * f + f * 2.0F) / 3.0F;
        if (f > 1.0F) {
            f = 1.0F;
        }

        return f;
    }


    public int getUseDuration(ItemStack p_77626_1_) {
        return 500;
    }


    public Predicate<ItemStack> getAllSupportedProjectiles() {
        return ARROW_OR_FIREWORK;
    }

    public  EntitySniperAmmo customArrow(EntitySniperAmmo arrow) {
        return arrow;
    }
    public int getDefaultProjectileRange() {
        return 15;
    }
    
    // Determine whether we can find our exclusive bullets 
    protected ItemStack findAmmo(Player player)
    {
        if (this.isSniperAmmo(player.getItemInHand(InteractionHand.OFF_HAND)))
        {
            return player.getItemInHand(InteractionHand.OFF_HAND);
        }
        else if (this.isSniperAmmo(player.getItemInHand(InteractionHand.MAIN_HAND)))
        {
            return player.getItemInHand(InteractionHand.MAIN_HAND);
        }
        else
        {
            for (int i = 0; i < player.getInventory().getContainerSize(); ++i)
            {
                ItemStack itemstack = player.getInventory().getItem(i);

                if (this.isSniperAmmo(itemstack))
                {
                    return itemstack;
                }
            }

            return ItemStack.EMPTY;
        }
    }

    protected boolean isSniperAmmo(ItemStack stack)
    {
        return stack.getItem() instanceof ItemSniperAmmo;
    }
	
    @Override
    public boolean onEntitySwing(ItemStack stack, LivingEntity entity)
    {
        return true;
    }
	
    public void initializeClient(java.util.function.Consumer<net.minecraftforge.client.IItemRenderProperties> consumer) {
    
    }
    
    // Monitor the state of firearms 
    public void inventoryTick(ItemStack p_77663_1_, Level p_77663_2_, Entity p_77663_3_, int p_77663_4_, boolean p_77663_5_) {
        if(p_77663_3_ instanceof Player)
        {
            ItemStack item = ((Player)p_77663_3_).getItemInHand(InteractionHand.OFF_HAND);
            
          // If the player's deputy is equipped with this gun 
          if(item.getItem() == ItemInit.F2RIFLE.get())
          {
             // Let the field of vision become open ( The smaller the value, the larger the magnification )
        	 Minecraft.getInstance().options.fov=12;
          }
          else {
             // Return to the field of vision when you are not in the Deputy 
         	 Minecraft.getInstance().options.fov=70;
          }
        }

    }
    
    @Override
    public void appendHoverText(ItemStack stack, @Nullable Level worldIn, List<Component> tooltip, TooltipFlag flagIn) {
    	tooltip.add(Component.nullToEmpty(ChatFormatting.GOLD+"Press 'F' to offhand for scoping."));
    	tooltip.add(Component.nullToEmpty(ChatFormatting.GOLD+"Ammo Type:Sniper Rifle Ammo"));
    }
    
}

stay ItemInit Class to add our gun declaration :

ItemInit.java

    public static RegistryObject<Item> SA110 = ITEMS.register("sa110",()->
    {
        return new ItemF2();
    });

6. We designed a special sound for our guns , stay SoundInit Register in :

SoundInit.java

package com.joy187.re8joymod.init;

import net.minecraftforge.registries.RegistryObject;

import com.joy187.re8joymod.Main;

import net.minecraft.resources.ResourceLocation;
import net.minecraft.sounds.SoundEvent;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;

public class SoundInit {


    public static final DeferredRegister<SoundEvent> SOUNDS = DeferredRegister.create(ForgeRegistries.SOUND_EVENTS, Main.MOD_ID);
    
    // The sound of our guns 
    public static final RegistryObject<SoundEvent> R2FIRE = build("entity.m1851.f2rifle");


    private static RegistryObject<SoundEvent> build(String id)
    {
        return SOUNDS.register(id, () -> new SoundEvent(new ResourceLocation(Main.MOD_ID, id)));
    }
}

In the main class of the project Main Function will be SoundInit Class to register ：

	public Main() {
		IEventBus bus = FMLJavaModLoadingContext.get().getModEventBus();

		ItemInit.ITEMS.register(bus);
		BlockInit.BLOCKS.register(bus);
		EntityInit.ENTITY_TYPES.register(bus);
		EffectInit.EFFECTS.register(bus);
		PotionInit.POTIONS.register(bus);

        // Add this 
		SoundInit.SOUNDS.register(bus);

	}

Convert sound files to .ogg Format , Put in src\main\resources\assets\ Yours modid\sounds\entity\m1851 Under the path .

7. The code section ends , Enter the resource pack production process . stay resources In bag sounds.json Add our gun sound to the file :

sounds.json

  "entity.m1851.f2rifle":{
    "category":"entity",
    "subtitle" :"entity.m1851.f2rifle.sub",
    "sounds":[{ "name": "re8joymod:entity/m1851/f2rifle", "stream":true }]
  },

stay lang In bag en_us.json Add guns 、 Bullet items 、 English name of bullet entity :

en_us.json

  "entity.re8joymod.sniperammo": "Sniper Rifle Ammo",

  "item.re8joymod.f2rifle": "F2 Rifle",
  "item.re8joymod.sniperammo": "Sniper Rifle Ammo",

stay lang In bag zh_cn.json Add guns 、 Bullet items 、 Chinese name of bullet entity :

zh_cn.json

  "item.re8joymod.sniperammo": " Sniper gun bullets ",
  "item.re8joymod.f2rifle": "F2  sniper rifle ",
  "entity.re8joymod.sniperammo": " Sniper gun bullets ",

8. Save the project , Run game tests :

The main hand is in the form of sniper gun ：

Press ’F’ Key to switch to the sniper gun form when the second hand

Pong! Pong!