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+/*
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+ * This file is part of architectury.
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+ * Copyright (C) 2020, 2021 architectury
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+ *
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+ * This program 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; either
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+ * version 3 of the License, or (at your option) any later version.
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+ *
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+ * This program 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 License
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+ * along with this program; if not, write to the Free Software Foundation,
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+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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+ */
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+
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+package me.shedaniel.architectury.networking.fabric;
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+
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+import me.shedaniel.architectury.networking.NetworkManager;
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+import net.fabricmc.api.EnvType;
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+import net.fabricmc.api.Environment;
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+import net.fabricmc.fabric.api.networking.v1.PacketByteBufs;
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+import net.minecraft.client.Minecraft;
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+import net.minecraft.core.Registry;
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+import net.minecraft.network.FriendlyByteBuf;
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+import net.minecraft.network.protocol.Packet;
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+import net.minecraft.resources.ResourceLocation;
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+import net.minecraft.world.entity.Entity;
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+import net.minecraft.world.entity.EntityType;
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+import net.minecraft.world.phys.Vec3;
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+
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+import java.util.UUID;
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+
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+/**
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+ * @see net.minecraft.network.protocol.game.ClientboundAddEntityPacket
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+ */
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+public class SpawnEntityPacket {
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+ private static final ResourceLocation PACKET_ID = new ResourceLocation("architectury", "spawn_entity_packet");
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+
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+ @Environment(EnvType.CLIENT)
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+ public static void register() {
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+ NetworkManager.registerReceiver(NetworkManager.s2c(), PACKET_ID, SpawnEntityPacket::receive);
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+ }
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+
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+ public static Packet<?> create(Entity entity) {
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+ if (entity.level.isClientSide()) {
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+ throw new IllegalStateException("SpawnPacketUtil.create called on the logical client!");
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+ }
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+ FriendlyByteBuf buffer = PacketByteBufs.create();
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+ buffer.writeVarInt(Registry.ENTITY_TYPE.getId(entity.getType()));
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+ buffer.writeUUID(entity.getUUID());
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+ buffer.writeVarInt(entity.getId());
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+ Vec3 position = entity.position();
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+ buffer.writeDouble(position.x);
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+ buffer.writeDouble(position.y);
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+ buffer.writeDouble(position.z);
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+ buffer.writeFloat(entity.xRot);
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+ buffer.writeFloat(entity.yRot);
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+ buffer.writeFloat(entity.getYHeadRot());
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+ Vec3 deltaMovement = entity.getDeltaMovement();
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+ buffer.writeDouble(deltaMovement.x);
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+ buffer.writeDouble(deltaMovement.y);
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+ buffer.writeDouble(deltaMovement.z);
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+ return NetworkManager.toPacket(NetworkManager.s2c(), PACKET_ID, buffer);
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+ }
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+
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+ @Environment(EnvType.CLIENT)
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+ public static void receive(FriendlyByteBuf buf, NetworkManager.PacketContext context) {
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+ int entityTypeId = buf.readVarInt();
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+ UUID uuid = buf.readUUID();
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+ int id = buf.readVarInt();
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+ double x = buf.readDouble();
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+ double y = buf.readDouble();
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+ double z = buf.readDouble();
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+ float xRot = buf.readFloat();
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+ float yRot = buf.readFloat();
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+ float yHeadRot = buf.readFloat();
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+ double deltaX = buf.readDouble();
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+ double deltaY = buf.readDouble();
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+ double deltaZ = buf.readDouble();
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+ context.queue(() -> {
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+ EntityType<?> entityType = Registry.ENTITY_TYPE.byId(entityTypeId);
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+ if (entityType == null) {
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+ throw new IllegalStateException("Entity type (" + entityTypeId + ") is unknown, spawning at (" + x + ", " + y + ", " + z + ")");
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+ }
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+ if (Minecraft.getInstance().level == null) {
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+ throw new IllegalStateException("Client world is null!");
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+ }
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+ Entity entity = entityType.create(Minecraft.getInstance().level);
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+ if (entity == null) {
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+ throw new IllegalStateException("Created entity is null!");
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+ }
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+ entity.setUUID(uuid);
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+ entity.setId(id);
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+ entity.setPacketCoordinates(x, y, z);
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+ entity.absMoveTo(x, y, z, xRot, yRot);
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+ entity.setYHeadRot(yHeadRot);
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+ entity.setYBodyRot(yHeadRot);
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+ Minecraft.getInstance().level.putNonPlayerEntity(id, entity);
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+ entity.lerpMotion(deltaX, deltaY, deltaZ);
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+ });
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+ }
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+}
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canitzp