109 lines
4.1 KiB
Java
109 lines
4.1 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2019.
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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.fml.network;
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import it.unimi.dsi.fastutil.objects.Reference2ReferenceArrayMap;
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import net.minecraft.network.IPacket;
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import net.minecraft.network.PacketBuffer;
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import net.minecraft.network.login.client.CCustomPayloadLoginPacket;
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import net.minecraft.network.login.server.SCustomPayloadLoginPacket;
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import net.minecraft.network.play.client.CCustomPayloadPacket;
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import net.minecraft.network.play.server.SCustomPayloadPlayPacket;
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import net.minecraft.util.ResourceLocation;
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import net.minecraftforge.fml.unsafe.UnsafeHacks;
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import java.lang.reflect.Field;
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import java.lang.reflect.Modifier;
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import java.util.Arrays;
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import java.util.Optional;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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public interface ICustomPacket<T extends IPacket<?>> {
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@SuppressWarnings("OptionalUsedAsFieldOrParameterType")
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enum Fields {
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CPACKETCUSTOMPAYLOAD(CCustomPayloadPacket.class),
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SPACKETCUSTOMPAYLOAD(SCustomPayloadPlayPacket.class),
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CPACKETCUSTOMLOGIN(CCustomPayloadLoginPacket.class),
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SPACKETCUSTOMLOGIN(SCustomPayloadLoginPacket.class),
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;
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static final Reference2ReferenceArrayMap<Class<?>, Fields> lookup;
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static {
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lookup = Stream.of(values()).
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collect(Collectors.toMap(Fields::getClazz, Function.identity(), (m1, m2)->m1, Reference2ReferenceArrayMap::new));
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}
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private final Class<?> clazz;
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final Optional<Field> data;
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final Optional<Field> channel;
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final Optional<Field> index;
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Fields(Class<?> customPacketClass)
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{
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this.clazz = customPacketClass;
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Field[] fields = customPacketClass.getDeclaredFields();
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data = Arrays.stream(fields).filter(f-> !Modifier.isStatic(f.getModifiers()) && f.getType() == PacketBuffer.class).findFirst();
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channel = Arrays.stream(fields).filter(f->!Modifier.isStatic(f.getModifiers()) && f.getType() == ResourceLocation.class).findFirst();
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index = Arrays.stream(fields).filter(f->!Modifier.isStatic(f.getModifiers()) && f.getType() == int.class).findFirst();
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}
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private Class<?> getClazz()
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{
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return clazz;
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}
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}
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default PacketBuffer getInternalData() {
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return Fields.lookup.get(this.getClass()).data.map(f->UnsafeHacks.<PacketBuffer>getField(f, this)).orElse(null);
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}
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default ResourceLocation getName() {
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return Fields.lookup.get(this.getClass()).channel.map(f->UnsafeHacks.<ResourceLocation>getField(f, this)).orElse(FMLLoginWrapper.WRAPPER);
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}
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default int getIndex() {
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return Fields.lookup.get(this.getClass()).index.map(f->UnsafeHacks.getIntField(f, this)).orElse(Integer.MIN_VALUE);
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}
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default void setData(PacketBuffer buffer) {
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Fields.lookup.get(this.getClass()).data.ifPresent(f->UnsafeHacks.setField(f, this, buffer));
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}
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default void setName(ResourceLocation channelName) {
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Fields.lookup.get(this.getClass()).channel.ifPresent(f->UnsafeHacks.setField(f, this, channelName));
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}
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default void setIndex(int index) {
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Fields.lookup.get(this.getClass()).index.ifPresent(f->UnsafeHacks.setIntField(f, this, index));
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}
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default NetworkDirection getDirection() {
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return NetworkDirection.directionFor(this.getClass());
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}
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@SuppressWarnings("unchecked")
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default T getThis() {
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return (T)this;
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}
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}
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