Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2016. Diorite (by Bartomiej Mazur (aka GotoFinal)) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.diorite.impl.connection.packets.play.clientbound; import javax.vecmath.Vector3f; import java.io.IOException; import java.util.UUID; import org.apache.commons.lang3.builder.ToStringBuilder; import org.apache.commons.lang3.builder.ToStringStyle; import org.diorite.impl.DioriteCore; import org.diorite.impl.connection.EnumProtocol; import org.diorite.impl.connection.EnumProtocolDirection; import org.diorite.impl.connection.packets.PacketClass; import org.diorite.impl.connection.packets.PacketDataSerializer; import org.diorite.impl.connection.packets.play.PacketPlayClientboundListener; import org.diorite.impl.entity.IEntity; import org.diorite.impl.entity.IEntityFactory; import org.diorite.impl.entity.meta.entry.EntityMetadataEntry; @PacketClass(id = 0x03, protocol = EnumProtocol.PLAY, direction = EnumProtocolDirection.CLIENTBOUND, size = 170) public class PacketPlayClientboundSpawnEntityLiving extends PacketPlayClientbound { private int entityId; // ~5 bytes private UUID entityUUID; // 16 bytes private byte entityTypeId; // 1 byte private int x; // 4 bytes, WARNING! This is 'fixed-point' number private int y; // 4 bytes, WARNING! This is 'fixed-point' number private int z; // 4 bytes, WARNING! This is 'fixed-point' number private byte yaw; // 1 byte private byte pitch; // 1 byte private byte headPitch; // 1 byte private short movX; // 2 bytes private short movY; // 2 bytes private short movZ; // 2 bytes private Iterable<EntityMetadataEntry<?>> metadata; // ~not more than 128 bytes public PacketPlayClientboundSpawnEntityLiving() { } private static final IEntityFactory factory = DioriteCore.getInstance().getServerManager().getEntityFactory(); @SuppressWarnings("MagicNumber") public PacketPlayClientboundSpawnEntityLiving(final IEntity entity) { this.entityId = entity.getId(); this.entityUUID = entity.getUniqueID(); this.entityTypeId = (byte) factory.getEntityNetworkID(entity.getType()); this.x = (int) (entity.getX() * 32); this.y = (int) (entity.getY() * 32); this.z = (int) (entity.getZ() * 32); this.yaw = (byte) ((entity.getYaw() * 256.0F) / 360.0F); this.pitch = (byte) ((entity.getPitch() * 256.0F) / 360.0F); this.headPitch = (byte) ((entity.getHeadPitch() * 256.0F) / 360.0F); final Vector3f vel = entity.getVelocity(); this.movX = (short) (vel.x * 8000); // IDK why 8000 this.movY = (short) (vel.y * 8000); this.movZ = (short) (vel.z * 8000); // TODO pasre metadata from entity, or get it if possible this.metadata = entity.getMetadata().getEntries(); } @Override public void readPacket(final PacketDataSerializer data) throws IOException { this.entityId = data.readVarInt(); this.entityUUID = data.readUUID(); this.entityTypeId = data.readByte(); this.x = data.readInt(); this.y = data.readInt(); this.z = data.readInt(); this.yaw = data.readByte(); this.pitch = data.readByte(); this.headPitch = data.readByte(); this.movX = data.readShort(); this.movY = data.readShort(); this.movZ = data.readShort(); this.metadata = data.readEntityMetadata(); } @Override public void writeFields(final PacketDataSerializer data) throws IOException { // System.out.println("write packet...3"); data.writeVarInt(this.entityId); data.writeUUID(this.entityUUID); data.writeByte(this.entityTypeId); data.writeInt(this.x); data.writeInt(this.y); data.writeInt(this.z); data.writeByte(this.yaw); data.writeByte(this.pitch); data.writeByte(this.headPitch); data.writeShort(this.movX); data.writeShort(this.movY); data.writeShort(this.movZ); data.writeEntityMetadata(this.metadata); } @Override public void handle(final PacketPlayClientboundListener listener) { listener.handle(this); } public int getEntityId() { return this.entityId; } public void setEntityId(final int entityId) { this.entityId = entityId; } public byte getEntityTypeId() { return this.entityTypeId; } public void setEntityTypeId(final byte entityTypeId) { this.entityTypeId = entityTypeId; } public int getX() { return this.x; } public void setX(final int x) { this.x = x; } public int getY() { return this.y; } public void setY(final int y) { this.y = y; } public int getZ() { return this.z; } public void setZ(final int z) { this.z = z; } public byte getPitch() { return this.pitch; } public byte getYaw() { return this.yaw; } public void setYaw(final byte yaw) { this.yaw = yaw; } public void setPitch(final byte pitch) { this.pitch = pitch; } public byte getHeadPitch() { return this.headPitch; } public void setHeadPitch(final byte headPitch) { this.headPitch = headPitch; } public short getMovX() { return this.movX; } public void setMovX(final short movX) { this.movX = movX; } public short getMovY() { return this.movY; } public void setMovY(final short movY) { this.movY = movY; } public short getMovZ() { return this.movZ; } public void setMovZ(final short movZ) { this.movZ = movZ; } public Iterable<EntityMetadataEntry<?>> getMetadata() { return this.metadata; } public void setMetadata(final Iterable<EntityMetadataEntry<?>> metadata) { this.metadata = metadata; } @Override public String toString() { return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).appendSuper(super.toString()) .append("entityId", this.entityId).append("entityTypeId", this.entityTypeId).append("x", this.x) .append("y", this.y).append("z", this.z).append("yaw", this.yaw).append("pitch", this.pitch) .append("headPitch", this.headPitch).append("movX", this.movX).append("movY", this.movY) .append("movZ", this.movZ).append("metadata", this.metadata).toString(); } }