Java tutorial
/* * This file is part of Applied Energistics 2. * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. * * Applied Energistics 2 is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Applied Energistics 2 is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>. */ package appeng.core.sync.packets; import java.io.IOException; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.entity.player.EntityPlayerMP; import net.minecraft.item.ItemStack; import net.minecraft.tileentity.TileEntity; import appeng.api.storage.data.IAEItemStack; import appeng.client.ClientHelper; import appeng.container.AEBaseContainer; import appeng.container.ContainerOpenContext; import appeng.container.implementations.ContainerCraftAmount; import appeng.core.sync.AppEngPacket; import appeng.core.sync.GuiBridge; import appeng.core.sync.network.INetworkInfo; import appeng.helpers.InventoryAction; import appeng.util.Platform; import appeng.util.item.AEItemStack; public class PacketInventoryAction extends AppEngPacket { private final InventoryAction action; private final int slot; private final long id; private final IAEItemStack slotItem; // automatic. public PacketInventoryAction(final ByteBuf stream) throws IOException { this.action = InventoryAction.values()[stream.readInt()]; this.slot = stream.readInt(); this.id = stream.readLong(); final boolean hasItem = stream.readBoolean(); if (hasItem) { this.slotItem = AEItemStack.loadItemStackFromPacket(stream); } else { this.slotItem = null; } } // api public PacketInventoryAction(final InventoryAction action, final int slot, final IAEItemStack slotItem) throws IOException { if (Platform.isClient()) { throw new IllegalStateException("invalid packet, client cannot post inv actions with stacks."); } this.action = action; this.slot = slot; this.id = 0; this.slotItem = slotItem; final ByteBuf data = Unpooled.buffer(); data.writeInt(this.getPacketID()); data.writeInt(action.ordinal()); data.writeInt(slot); data.writeLong(this.id); if (slotItem == null) { data.writeBoolean(false); } else { data.writeBoolean(true); slotItem.writeToPacket(data); } this.configureWrite(data); } // api public PacketInventoryAction(final InventoryAction action, final int slot, final long id) { this.action = action; this.slot = slot; this.id = id; this.slotItem = null; final ByteBuf data = Unpooled.buffer(); data.writeInt(this.getPacketID()); data.writeInt(action.ordinal()); data.writeInt(slot); data.writeLong(id); data.writeBoolean(false); this.configureWrite(data); } @Override public void serverPacketData(final INetworkInfo manager, final AppEngPacket packet, final EntityPlayer player) { final EntityPlayerMP sender = (EntityPlayerMP) player; if (sender.openContainer instanceof AEBaseContainer) { final AEBaseContainer baseContainer = (AEBaseContainer) sender.openContainer; if (this.action == InventoryAction.AUTO_CRAFT) { final ContainerOpenContext context = baseContainer.getOpenContext(); if (context != null) { final TileEntity te = context.getTile(); Platform.openGUI(sender, te, baseContainer.getOpenContext().getSide(), GuiBridge.GUI_CRAFTING_AMOUNT); if (sender.openContainer instanceof ContainerCraftAmount) { final ContainerCraftAmount cca = (ContainerCraftAmount) sender.openContainer; if (baseContainer.getTargetStack() != null) { // Force to stack size 1 to fix a client-side display problem... ItemStack displayIs = baseContainer.getTargetStack().getItemStack().copy(); displayIs.stackSize = 1; cca.getCraftingItem().putStack(displayIs); // This is the *actual* item that matters, not the display item above cca.setItemToCraft(baseContainer.getTargetStack()); } cca.detectAndSendChanges(); } } } else { baseContainer.doAction(sender, this.action, this.slot, this.id); } } } @Override public void clientPacketData(final INetworkInfo network, final AppEngPacket packet, final EntityPlayer player) { if (this.action == InventoryAction.UPDATE_HAND) { if (this.slotItem == null) { ClientHelper.proxy.getPlayers().get(0).inventory.setItemStack(null); } else { ClientHelper.proxy.getPlayers().get(0).inventory.setItemStack(this.slotItem.getItemStack()); } } } }