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Fix part entities not working at all (#8177)
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/*
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* Minecraft Forge
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* Copyright (c) 2016-2021.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.debug.entity;
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import net.minecraft.client.renderer.entity.PigRenderer;
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import net.minecraft.nbt.CompoundTag;
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import net.minecraft.network.protocol.Packet;
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import net.minecraft.network.protocol.game.ClientboundAddMobPacket;
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import net.minecraft.world.damagesource.DamageSource;
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import net.minecraft.world.entity.Entity;
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import net.minecraft.world.entity.EntityDimensions;
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import net.minecraft.world.entity.EntityType;
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import net.minecraft.world.entity.Pose;
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import net.minecraft.world.entity.MobCategory;
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import net.minecraft.world.entity.animal.Pig;
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import net.minecraft.world.level.Level;
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import net.minecraft.world.phys.Vec3;
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import net.minecraftforge.api.distmarker.Dist;
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import net.minecraftforge.client.event.EntityRenderersEvent;
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import net.minecraftforge.entity.PartEntity;
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import net.minecraftforge.event.entity.EntityAttributeCreationEvent;
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import net.minecraftforge.eventbus.api.SubscribeEvent;
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import net.minecraftforge.fml.common.Mod;
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import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
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import net.minecraftforge.fmllegacy.RegistryObject;
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import net.minecraftforge.registries.DeferredRegister;
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import net.minecraftforge.registries.ForgeRegistries;
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@Mod(value = PartEntityTest.MOD_ID)
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public class PartEntityTest
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{
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static final String MOD_ID = "part_entity_test";
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static final boolean ENABLED = true;
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private static final DeferredRegister<EntityType<?>> ENTITIES = DeferredRegister.create(ForgeRegistries.ENTITIES, MOD_ID);
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private static final RegistryObject<EntityType<TestEntity>> TEST_ENTITY = ENTITIES.register("test_entity", () -> EntityType.Builder.of(TestEntity::new, MobCategory.CREATURE).sized(16.0F, 8.0F).clientTrackingRange(10).build("test_entity"));
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public PartEntityTest()
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{
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if (ENABLED)
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{
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ENTITIES.register(FMLJavaModLoadingContext.get().getModEventBus());
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FMLJavaModLoadingContext.get().getModEventBus().register(this);
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}
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}
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@SubscribeEvent
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public void onRegisterAttributes(final EntityAttributeCreationEvent event)
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{
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event.put(TEST_ENTITY.get(), Pig.createAttributes().build());
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}
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@Mod.EventBusSubscriber(modid = MOD_ID, value = Dist.CLIENT, bus = Mod.EventBusSubscriber.Bus.MOD)
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private static class ClientEvents
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{
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@SubscribeEvent
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public static void onRegisterRenderers(final EntityRenderersEvent.RegisterRenderers event)
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{
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if (!ENABLED) return;
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event.registerEntityRenderer(TEST_ENTITY.get(), PigRenderer::new);
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}
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}
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private static class TestEntity extends Pig
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{
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private final TestEntityPart[] subEntities;
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public final TestEntityPart head;
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private final TestEntityPart neck;
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private final TestEntityPart body;
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private final TestEntityPart tail1;
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private final TestEntityPart tail2;
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private final TestEntityPart tail3;
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private final TestEntityPart wing1;
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private final TestEntityPart wing2;
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public TestEntity(EntityType<? extends Pig> entity, Level world)
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{
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super(entity, world);
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this.head = new TestEntityPart(this, 1.0F, 1.0F);
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this.neck = new TestEntityPart(this, 3.0F, 3.0F);
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this.body = new TestEntityPart(this, 5.0F, 3.0F);
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this.tail1 = new TestEntityPart(this, 2.0F, 2.0F);
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this.tail2 = new TestEntityPart(this, 2.0F, 2.0F);
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this.tail3 = new TestEntityPart(this, 2.0F, 2.0F);
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this.wing1 = new TestEntityPart(this, 4.0F, 2.0F);
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this.wing2 = new TestEntityPart(this, 4.0F, 2.0F);
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this.subEntities = new TestEntityPart[]{this.head, this.neck, this.body, this.tail1, this.tail2, this.tail3, this.wing1, this.wing2};
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}
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@Override
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public void aiStep()
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{
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super.aiStep();
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for (TestEntityPart part : this.subEntities)
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{
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part.setPos(this.getX(), this.getY(), this.getZ());
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}
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Vec3[] vec3 = new Vec3[this.subEntities.length];
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for(int j = 0; j < this.subEntities.length; ++j)
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{
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vec3[j] = new Vec3(this.subEntities[j].getX(), this.subEntities[j].getY(), this.subEntities[j].getZ());
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}
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for(int l = 0; l < this.subEntities.length; ++l)
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{
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this.subEntities[l].xo = vec3[l].x;
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this.subEntities[l].yo = vec3[l].y;
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this.subEntities[l].zo = vec3[l].z;
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this.subEntities[l].xOld = vec3[l].x;
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this.subEntities[l].yOld = vec3[l].y;
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this.subEntities[l].zOld = vec3[l].z;
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}
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}
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@Override
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public boolean isMultipartEntity()
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{
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return true;
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}
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@Override
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public PartEntity<?>[] getParts()
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{
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return this.subEntities;
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}
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@Override
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public void recreateFromPacket(ClientboundAddMobPacket packet)
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{
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super.recreateFromPacket(packet);
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PartEntity<?>[] parts = this.getParts();
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for(int i = 0; i < parts.length; ++i)
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{
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parts[i].setId(i + packet.getId());
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}
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}
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}
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private static class TestEntityPart extends PartEntity<TestEntity>
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{
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public final TestEntity parent;
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private final EntityDimensions size;
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public TestEntityPart(TestEntity parent, float width, float height)
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{
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super(parent);
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this.size = EntityDimensions.scalable(width, height);
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this.refreshDimensions();
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this.parent = parent;
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}
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protected void defineSynchedData() {}
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protected void readAdditionalSaveData(CompoundTag nbt) {}
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protected void addAdditionalSaveData(CompoundTag nbt) {}
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public boolean isPickable()
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{
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return true;
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}
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public boolean hurt(DamageSource source, float amount)
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{
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return !this.isInvulnerableTo(source) && this.parent.hurt(source, amount);
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}
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public boolean is(Entity entity)
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{
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return this == entity || this.parent == entity;
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}
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public Packet<?> getAddEntityPacket()
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{
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throw new UnsupportedOperationException();
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}
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public EntityDimensions getDimensions(Pose matrix)
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{
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return this.size;
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}
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public boolean shouldBeSaved()
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{
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return false;
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}
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}
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}
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