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 io.netty.buffer.ByteBuf; import net.minecraft.block.Block; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.tileentity.TileEntity; import net.minecraft.world.World; import buildcraft.BuildCraftBuilders; import buildcraft.api.core.IAreaProvider; import buildcraft.api.core.ISerializable; import buildcraft.api.core.Position; import buildcraft.core.DefaultProps; import buildcraft.core.EntityBlock; import buildcraft.core.LaserKind; import buildcraft.core.TileBuildCraft; import buildcraft.core.proxy.CoreProxy; import buildcraft.core.utils.Utils; public class TileMarker extends TileBuildCraft implements IAreaProvider { public static class TileWrapper implements ISerializable { public int x, y, z; private TileMarker marker; public TileWrapper() { x = Integer.MAX_VALUE; y = Integer.MAX_VALUE; z = Integer.MAX_VALUE; } public TileWrapper(int x, int y, int z) { this.x = x; this.y = y; this.z = z; } public boolean isSet() { return x != Integer.MAX_VALUE; } public TileMarker getMarker(World world) { if (!isSet()) { return null; } if (marker == null) { TileEntity tile = world.getTileEntity(x, y, z); if (tile instanceof TileMarker) { marker = (TileMarker) tile; } } return marker; } public void reset() { x = Integer.MAX_VALUE; y = Integer.MAX_VALUE; z = Integer.MAX_VALUE; } @Override public void readData(ByteBuf stream) { x = stream.readInt(); if (isSet()) { y = stream.readShort(); z = stream.readInt(); } } @Override public void writeData(ByteBuf stream) { stream.writeInt(x); if (isSet()) { // Only X is used for checking if a vector is set, so we can save space on the Y coordinate. stream.writeShort(y); stream.writeInt(z); } } } public static class Origin implements ISerializable { public TileWrapper vectO = new TileWrapper(); public TileWrapper[] vect = { new TileWrapper(), new TileWrapper(), new TileWrapper() }; public int xMin, yMin, zMin, xMax, yMax, zMax; public boolean isSet() { return vectO.isSet(); } @Override public void writeData(ByteBuf stream) { vectO.writeData(stream); for (TileWrapper tw : vect) { tw.writeData(stream); } stream.writeInt(xMin); stream.writeShort(yMin); stream.writeInt(zMin); stream.writeInt(xMax); stream.writeShort(yMax); stream.writeInt(zMax); } @Override public void readData(ByteBuf stream) { vectO.readData(stream); for (TileWrapper tw : vect) { tw.readData(stream); } xMin = stream.readInt(); yMin = stream.readShort(); zMin = stream.readInt(); xMax = stream.readInt(); yMax = stream.readShort(); zMax = stream.readInt(); } } public Origin origin = new Origin(); public boolean showSignals = false; private Position initVectO; private Position[] initVect; private EntityBlock[] lasers; private EntityBlock[] signals; public void updateSignals() { if (!worldObj.isRemote) { showSignals = worldObj.isBlockIndirectlyGettingPowered(xCoord, yCoord, zCoord); sendNetworkUpdate(); } } private void switchSignals() { if (signals != null) { for (EntityBlock b : signals) { if (b != null) { CoreProxy.proxy.removeEntity(b); } } signals = null; } if (showSignals) { signals = new EntityBlock[6]; if (!origin.isSet() || !origin.vect[0].isSet()) { signals[0] = Utils.createLaser(worldObj, new Position(xCoord, yCoord, zCoord), new Position(xCoord + DefaultProps.MARKER_RANGE - 1, yCoord, zCoord), LaserKind.Blue); signals[1] = Utils.createLaser(worldObj, new Position(xCoord - DefaultProps.MARKER_RANGE + 1, yCoord, zCoord), new Position(xCoord, yCoord, zCoord), LaserKind.Blue); } if (!origin.isSet() || !origin.vect[1].isSet()) { signals[2] = Utils.createLaser(worldObj, new Position(xCoord, yCoord, zCoord), new Position(xCoord, yCoord + DefaultProps.MARKER_RANGE - 1, zCoord), LaserKind.Blue); signals[3] = Utils.createLaser(worldObj, new Position(xCoord, yCoord - DefaultProps.MARKER_RANGE + 1, zCoord), new Position(xCoord, yCoord, zCoord), LaserKind.Blue); } if (!origin.isSet() || !origin.vect[2].isSet()) { signals[4] = Utils.createLaser(worldObj, new Position(xCoord, yCoord, zCoord), new Position(xCoord, yCoord, zCoord + DefaultProps.MARKER_RANGE - 1), LaserKind.Blue); signals[5] = Utils.createLaser(worldObj, new Position(xCoord, yCoord, zCoord - DefaultProps.MARKER_RANGE + 1), new Position(xCoord, yCoord, zCoord), LaserKind.Blue); } } } @Override public void initialize() { super.initialize(); updateSignals(); if (initVectO != null) { origin = new Origin(); origin.vectO = new TileWrapper((int) initVectO.x, (int) initVectO.y, (int) initVectO.z); for (int i = 0; i < 3; ++i) { if (initVect[i] != null) { linkTo((TileMarker) worldObj.getTileEntity((int) initVect[i].x, (int) initVect[i].y, (int) initVect[i].z), i); } } } } public void tryConnection() { if (worldObj.isRemote) { return; } for (int j = 0; j < 3; ++j) { if (!origin.isSet() || !origin.vect[j].isSet()) { setVect(j); } } sendNetworkUpdate(); } void setVect(int n) { int[] coords = new int[3]; coords[0] = xCoord; coords[1] = yCoord; coords[2] = zCoord; if (!origin.isSet() || !origin.vect[n].isSet()) { for (int j = 1; j < DefaultProps.MARKER_RANGE; ++j) { coords[n] += j; Block block = worldObj.getBlock(coords[0], coords[1], coords[2]); if (block == BuildCraftBuilders.markerBlock) { TileMarker marker = (TileMarker) worldObj.getTileEntity(coords[0], coords[1], coords[2]); if (linkTo(marker, n)) { break; } } coords[n] -= j; coords[n] -= j; block = worldObj.getBlock(coords[0], coords[1], coords[2]); if (block == BuildCraftBuilders.markerBlock) { TileMarker marker = (TileMarker) worldObj.getTileEntity(coords[0], coords[1], coords[2]); if (linkTo(marker, n)) { break; } } coords[n] += j; } } } private boolean linkTo(TileMarker marker, int n) { if (marker == null) { return false; } if (origin.isSet() && marker.origin.isSet()) { return false; } if (!origin.isSet() && !marker.origin.isSet()) { origin = new Origin(); marker.origin = origin; origin.vectO = new TileWrapper(xCoord, yCoord, zCoord); origin.vect[n] = new TileWrapper(marker.xCoord, marker.yCoord, marker.zCoord); } else if (!origin.isSet()) { origin = marker.origin; origin.vect[n] = new TileWrapper(xCoord, yCoord, zCoord); } else { marker.origin = origin; origin.vect[n] = new TileWrapper(marker.xCoord, marker.yCoord, marker.zCoord); } origin.vectO.getMarker(worldObj).createLasers(); updateSignals(); marker.updateSignals(); return true; } private void createLasers() { if (lasers != null) { for (EntityBlock entity : lasers) { if (entity != null) { CoreProxy.proxy.removeEntity(entity); } } } lasers = new EntityBlock[12]; Origin o = origin; if (!origin.vect[0].isSet()) { o.xMin = origin.vectO.x; o.xMax = origin.vectO.x; } else if (origin.vect[0].x < xCoord) { o.xMin = origin.vect[0].x; o.xMax = xCoord; } else { o.xMin = xCoord; o.xMax = origin.vect[0].x; } if (!origin.vect[1].isSet()) { o.yMin = origin.vectO.y; o.yMax = origin.vectO.y; } else if (origin.vect[1].y < yCoord) { o.yMin = origin.vect[1].y; o.yMax = yCoord; } else { o.yMin = yCoord; o.yMax = origin.vect[1].y; } if (!origin.vect[2].isSet()) { o.zMin = origin.vectO.z; o.zMax = origin.vectO.z; } else if (origin.vect[2].z < zCoord) { o.zMin = origin.vect[2].z; o.zMax = zCoord; } else { o.zMin = zCoord; o.zMax = origin.vect[2].z; } lasers = Utils.createLaserBox(worldObj, o.xMin, o.yMin, o.zMin, o.xMax, o.yMax, o.zMax, LaserKind.Red); } @Override public int xMin() { if (origin.isSet()) { return origin.xMin; } return xCoord; } @Override public int yMin() { if (origin.isSet()) { return origin.yMin; } return yCoord; } @Override public int zMin() { if (origin.isSet()) { return origin.zMin; } return zCoord; } @Override public int xMax() { if (origin.isSet()) { return origin.xMax; } return xCoord; } @Override public int yMax() { if (origin.isSet()) { return origin.yMax; } return yCoord; } @Override public int zMax() { if (origin.isSet()) { return origin.zMax; } return zCoord; } @Override public void invalidate() { super.invalidate(); destroy(); } @Override public void destroy() { TileMarker markerOrigin = null; if (origin.isSet()) { markerOrigin = origin.vectO.getMarker(worldObj); Origin o = origin; if (markerOrigin != null && markerOrigin.lasers != null) { for (EntityBlock entity : markerOrigin.lasers) { if (entity != null) { entity.setDead(); } } markerOrigin.lasers = null; } for (TileWrapper m : o.vect) { TileMarker mark = m.getMarker(worldObj); if (mark != null) { if (mark.lasers != null) { for (EntityBlock entity : mark.lasers) { if (entity != null) { entity.setDead(); } } mark.lasers = null; } if (mark != this) { mark.origin = new Origin(); } } } if (markerOrigin != this && markerOrigin != null) { markerOrigin.origin = new Origin(); } for (TileWrapper wrapper : o.vect) { TileMarker mark = wrapper.getMarker(worldObj); if (mark != null) { mark.updateSignals(); } } if (markerOrigin != null) { markerOrigin.updateSignals(); } } if (signals != null) { for (EntityBlock block : signals) { if (block != null) { block.setDead(); } } } signals = null; if (!worldObj.isRemote && markerOrigin != null && markerOrigin != this) { markerOrigin.sendNetworkUpdate(); } } @Override public void removeFromWorld() { if (!origin.isSet()) { return; } Origin o = origin; for (TileWrapper m : o.vect.clone()) { if (m.isSet()) { worldObj.setBlockToAir(m.x, m.y, m.z); BuildCraftBuilders.markerBlock.dropBlockAsItem(worldObj, m.x, m.y, m.z, 0, 0); } } worldObj.setBlockToAir(o.vectO.x, o.vectO.y, o.vectO.z); BuildCraftBuilders.markerBlock.dropBlockAsItem(worldObj, o.vectO.x, o.vectO.y, o.vectO.z, 0, 0); } @Override public void readFromNBT(NBTTagCompound nbttagcompound) { super.readFromNBT(nbttagcompound); if (nbttagcompound.hasKey("vectO")) { initVectO = new Position(nbttagcompound.getCompoundTag("vectO")); initVect = new Position[3]; for (int i = 0; i < 3; ++i) { if (nbttagcompound.hasKey("vect" + i)) { initVect[i] = new Position(nbttagcompound.getCompoundTag("vect" + i)); } } } } @Override public void writeToNBT(NBTTagCompound nbttagcompound) { super.writeToNBT(nbttagcompound); if (origin.isSet() && origin.vectO.getMarker(worldObj) == this) { NBTTagCompound vectO = new NBTTagCompound(); new Position(origin.vectO.getMarker(worldObj)).writeToNBT(vectO); nbttagcompound.setTag("vectO", vectO); for (int i = 0; i < 3; ++i) { if (origin.vect[i].isSet()) { NBTTagCompound vect = new NBTTagCompound(); new Position(origin.vect[i].x, origin.vect[i].y, origin.vect[i].z).writeToNBT(vect); nbttagcompound.setTag("vect" + i, vect); } } } } @Override public void writeData(ByteBuf stream) { origin.writeData(stream); stream.writeBoolean(showSignals); } @Override public void readData(ByteBuf stream) { origin.readData(stream); showSignals = stream.readBoolean(); switchSignals(); if (origin.vectO.isSet() && origin.vectO.getMarker(worldObj) != null) { origin.vectO.getMarker(worldObj).updateSignals(); for (TileWrapper w : origin.vect) { TileMarker m = w.getMarker(worldObj); if (m != null) { m.updateSignals(); } } } createLasers(); } }