Java tutorial
/** * Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team * http://www.mod-buildcraft.com * * BuildCraft is distributed under the terms of the Minecraft Mod Public * License 1.0, or MMPL. Please check the contents of the license located in * http://www.mod-buildcraft.com/MMPL-1.0.txt */ package buildcraft.builders; import java.util.ArrayList; import java.util.HashSet; import io.netty.buffer.ByteBuf; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.item.ItemStack; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.util.AxisAlignedBB; import cpw.mods.fml.relauncher.Side; import net.minecraftforge.common.util.ForgeDirection; import buildcraft.BuildCraftCore; import buildcraft.api.core.Position; import buildcraft.core.Box; import buildcraft.core.Box.Kind; import buildcraft.core.IBoxProvider; import buildcraft.core.LaserData; import buildcraft.core.TileBuildCraft; import buildcraft.core.blueprints.Blueprint; import buildcraft.core.blueprints.BlueprintBase; import buildcraft.core.blueprints.BptBuilderBase; import buildcraft.core.blueprints.BptBuilderBlueprint; import buildcraft.core.blueprints.BptContext; import buildcraft.core.builders.BuildingItem; import buildcraft.core.builders.IBuildingItemsProvider; import buildcraft.core.network.BuildCraftPacket; import buildcraft.core.network.CommandWriter; import buildcraft.core.network.ICommandReceiver; import buildcraft.core.network.PacketCommand; import buildcraft.core.utils.Utils; public class TileConstructionMarker extends TileBuildCraft implements IBuildingItemsProvider, IBoxProvider, ICommandReceiver { public static HashSet<TileConstructionMarker> currentMarkers = new HashSet<TileConstructionMarker>(); public ForgeDirection direction = ForgeDirection.UNKNOWN; public LaserData laser; public ItemStack itemBlueprint; public Box box = new Box(); public BptBuilderBase bluePrintBuilder; public BptContext bptContext; private ArrayList<BuildingItem> buildersInAction = new ArrayList<BuildingItem>(); private NBTTagCompound initNBT; @Override public void initialize() { super.initialize(); box.kind = Kind.BLUE_STRIPES; if (worldObj.isRemote) { BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadBuildersInAction", null)); } } private BuildCraftPacket createLaunchItemPacket(final BuildingItem i) { return new PacketCommand(this, "launchItem", new CommandWriter() { public void write(ByteBuf data) { i.writeData(data); } }); } @Override public void updateEntity() { super.updateEntity(); BuildingItem toRemove = null; for (BuildingItem i : buildersInAction) { i.update(); if (i.isDone) { toRemove = i; } } if (toRemove != null) { buildersInAction.remove(toRemove); } if (worldObj.isRemote) { return; } if (itemBlueprint != null && ItemBlueprint.getId(itemBlueprint) != null && bluePrintBuilder == null) { BlueprintBase bpt = BlueprintBase.instantiate(itemBlueprint, worldObj, xCoord, yCoord, zCoord, direction); if (bpt instanceof Blueprint) { bluePrintBuilder = new BptBuilderBlueprint((Blueprint) bpt, worldObj, xCoord, yCoord, zCoord); bptContext = bluePrintBuilder.getContext(); box.initialize(bluePrintBuilder); sendNetworkUpdate(); } else { return; } } if (laser == null && direction != ForgeDirection.UNKNOWN) { laser = new LaserData(); laser.head = new Position(xCoord + 0.5F, yCoord + 0.5F, zCoord + 0.5F); laser.tail = new Position(xCoord + 0.5F + direction.offsetX * 0.5F, yCoord + 0.5F + direction.offsetY * 0.5F, zCoord + 0.5F + direction.offsetZ * 0.5F); laser.isVisible = true; sendNetworkUpdate(); } if (initNBT != null) { if (bluePrintBuilder != null) { bluePrintBuilder.loadBuildStateToNBT(initNBT.getCompoundTag("builderState"), this); } initNBT = null; } } @Override public void writeToNBT(NBTTagCompound nbt) { super.writeToNBT(nbt); nbt.setByte("direction", (byte) direction.ordinal()); if (itemBlueprint != null) { NBTTagCompound bptNBT = new NBTTagCompound(); itemBlueprint.writeToNBT(bptNBT); nbt.setTag("itemBlueprint", bptNBT); } NBTTagCompound bptNBT = new NBTTagCompound(); if (bluePrintBuilder != null) { NBTTagCompound builderCpt = new NBTTagCompound(); bluePrintBuilder.saveBuildStateToNBT(builderCpt, this); bptNBT.setTag("builderState", builderCpt); } nbt.setTag("bptBuilder", bptNBT); } @Override public void readFromNBT(NBTTagCompound nbt) { super.readFromNBT(nbt); direction = ForgeDirection.getOrientation(nbt.getByte("direction")); if (nbt.hasKey("itemBlueprint")) { itemBlueprint = ItemStack.loadItemStackFromNBT(nbt.getCompoundTag("itemBlueprint")); } // The rest of load has to be done upon initialize. initNBT = (NBTTagCompound) nbt.getCompoundTag("bptBuilder").copy(); } public void setBlueprint(ItemStack currentItem) { itemBlueprint = currentItem; sendNetworkUpdate(); } @Override public ArrayList<BuildingItem> getBuilders() { return buildersInAction; } @Override public void validate() { super.validate(); if (!worldObj.isRemote) { currentMarkers.add(this); } } @Override public void invalidate() { super.invalidate(); if (!worldObj.isRemote) { currentMarkers.remove(this); } } public boolean needsToBuild() { return bluePrintBuilder != null && !bluePrintBuilder.isDone(this); } public BptContext getContext() { return bptContext; } @Override public void addAndLaunchBuildingItem(BuildingItem item) { buildersInAction.add(item); BuildCraftCore.instance.sendToPlayersNear(createLaunchItemPacket(item), this); } @Override public void receiveCommand(String command, Side side, Object sender, ByteBuf stream) { if (side.isServer() && "uploadBuildersInAction".equals(command)) { BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadBuildersInAction", null)); for (BuildingItem i : buildersInAction) { BuildCraftCore.instance.sendToPlayer((EntityPlayer) sender, createLaunchItemPacket(i)); } } else if (side.isClient() && "launchItem".equals(command)) { BuildingItem item = new BuildingItem(); item.readData(stream); buildersInAction.add(item); } } @Override public Box getBox() { return box; } @Override public AxisAlignedBB getRenderBoundingBox() { Box renderBox = new Box(this).extendToEncompass(box); return renderBox.expand(50).getBoundingBox(); } @Override public void writeData(ByteBuf stream) { box.writeData(stream); stream.writeByte((laser != null ? 1 : 0) | (itemBlueprint != null ? 2 : 0)); if (laser != null) { laser.writeData(stream); } if (itemBlueprint != null) { Utils.writeStack(stream, itemBlueprint); } } @Override public void readData(ByteBuf stream) { box.readData(stream); int flags = stream.readUnsignedByte(); if ((flags & 1) != 0) { laser = new LaserData(); laser.readData(stream); } else { laser = null; } if ((flags & 2) != 0) { itemBlueprint = Utils.readStack(stream); } else { itemBlueprint = null; } } }