43 lines
2.2 KiB
Java
43 lines
2.2 KiB
Java
/*
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* This file is part of ViaProxy - https://github.com/RaphiMC/ViaProxy
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* Copyright (C) 2023 RK_01/RaphiMC and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.raphimc.viaproxy.injection.mixins;
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import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
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import com.viaversion.viaversion.api.type.Type;
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import com.viaversion.viaversion.protocols.protocol1_9to1_8.Protocol1_9To1_8;
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import org.spongepowered.asm.mixin.Mixin;
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import org.spongepowered.asm.mixin.injection.At;
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import org.spongepowered.asm.mixin.injection.Inject;
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import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
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@Mixin(targets = "com.viaversion.viaversion.protocols.protocol1_9to1_8.packets.EntityPackets$6$1", remap = false)
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public abstract class MixinEntityPackets_6_1 {
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@SuppressWarnings({"UnresolvedMixinReference", "MixinAnnotationTarget"})
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@Inject(method = "transform(Lcom/viaversion/viaversion/api/protocol/packet/PacketWrapper;Ljava/lang/Short;)Ljava/lang/Integer;", at = @At(value = "INVOKE", target = "Lcom/viaversion/viaversion/api/data/entity/EntityTracker;clientEntityId()I"), cancellable = true)
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private void fixOutOfBoundsSlot(PacketWrapper wrapper, Short slot, CallbackInfoReturnable<Integer> cir) throws Exception {
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final int entityId = wrapper.get(Type.VAR_INT, 0);
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final int clientPlayerId = wrapper.user().getEntityTracker(Protocol1_9To1_8.class).clientEntityId();
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if (slot < 0 || slot > 4 || (entityId == clientPlayerId && slot > 3)) {
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wrapper.cancel();
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cir.setReturnValue(0);
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}
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}
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}
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