Java tutorial
/** * Copyright (c) SpaceToad, 2011-2012 * 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.core; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; import net.minecraft.entity.Entity; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.world.World; import buildcraft.BuildCraftCore; import buildcraft.api.blueprints.BptSlotInfo; import buildcraft.api.core.Position; import buildcraft.core.blueprints.BptBuilderBase; import buildcraft.core.blueprints.BptContext; import buildcraft.core.blueprints.BptSlot; import buildcraft.core.blueprints.BptSlot.Mode; import buildcraft.core.proxy.CoreProxy; import buildcraft.core.utils.BlockUtil; import com.google.common.io.ByteArrayDataInput; import com.google.common.io.ByteArrayDataOutput; import cpw.mods.fml.common.registry.IEntityAdditionalSpawnData; public class EntityRobot extends Entity implements IEntityAdditionalSpawnData { private Box box; private int destX, destY, destZ; EntityEnergyLaser laser; public LinkedList<Action> targets = new LinkedList<Action>(); public static int MAX_TARGETS = 20; public int wait = 0; private class Action { public Action(BptSlot slot, BptContext context) { this.slot = slot; this.context = context; } public Action(BptBuilderBase builder) { this.builder = builder; } BptSlot slot; BptBuilderBase builder; BptContext context; } public EntityRobot(World world) { super(world); } public EntityRobot(World world, Box box) { super(world); this.box = box; init(); } protected void init() { destX = (int) box.centerX(); destY = (int) box.centerY(); destZ = (int) box.centerZ(); motionX = 0; motionY = 0; motionZ = 0; setLocationAndAngles(destX, destY, destZ, 0, 0); laser = new EntityEnergyLaser(worldObj, new Position(posX, posY, posZ), new Position(posX, posY, posZ)); worldObj.spawnEntityInWorld(laser); } @Override public void writeSpawnData(ByteArrayDataOutput data) { if (box == null) { box = new Box(); } data.writeInt(box.xMin); data.writeInt(box.yMin); data.writeInt(box.zMin); data.writeInt(box.xMax); data.writeInt(box.yMax); data.writeInt(box.zMax); } @Override public void readSpawnData(ByteArrayDataInput data) { box = new Box(); box.xMin = data.readInt(); box.yMin = data.readInt(); box.zMin = data.readInt(); box.xMax = data.readInt(); box.yMax = data.readInt(); box.zMax = data.readInt(); init(); } @Override protected void entityInit() { } @Override protected void readEntityFromNBT(NBTTagCompound nbttagcompound) { } @Override protected void writeEntityToNBT(NBTTagCompound nbttagcompound) { } @Override public void onUpdate() { move(); build(); updateLaser(); } protected void move() { setPosition(posX + motionX, posY + motionY, posZ + motionZ); if (reachedDesination()) { BlockIndex newDesination = getNewDestination(); if (newDesination != null) { setDestination(newDesination.i, newDesination.j, newDesination.k); } } } protected BlockIndex getNewDestination() { Box movementBoundary = new Box(); movementBoundary.initialize(box); movementBoundary.expand(1); Box moveArea = new Box(); moveArea.initialize(destX, destY, destZ, 1); List<BlockIndex> potentialDestinations = new ArrayList<BlockIndex>(); for (BlockIndex blockIndex : moveArea.getBlocksInArea()) { if (BlockUtil.isSoftBlock(worldObj, blockIndex.i, blockIndex.j, blockIndex.k) && movementBoundary.contains(blockIndex)) { potentialDestinations.add(blockIndex); } } if (!potentialDestinations.isEmpty()) { int i = worldObj.rand.nextInt(potentialDestinations.size()); return potentialDestinations.get(i); } return null; } protected void setDestination(int x, int y, int z) { destX = x; destY = y; destZ = z; motionX = (destX - posX) / 75 * (laser.getPowerAverage() / 2 + 1); motionY = (destY - posY) / 75 * (laser.getPowerAverage() / 2 + 1); motionZ = (destZ - posZ) / 75 * (laser.getPowerAverage() / 2 + 1); } protected boolean reachedDesination() { if (getDistance(destX, destY, destZ) <= .2) return true; return false; } protected void build() { updateWait(); if (targets.size() > 0) { Action a = targets.getFirst(); if (a.slot != null) { BptSlot target = a.slot; //System.out.printf("RobotChanging %d %d %d %s\n",target.x, target.y, target.z, target.mode); if (wait <= 0 && BlockUtil.canChangeBlock(worldObj, target.x, target.y, target.z)) { if (!CoreProxy.proxy.isRenderWorld(worldObj)) { if (target.mode == Mode.ClearIfInvalid) { if (!target.isValid(a.context)) { worldObj.setBlock(target.x, target.y, target.z, 0, 0, 3); } } else if (target.stackToUse != null) { worldObj.setBlock(target.x, target.y, target.z, 0); throw new RuntimeException("NOT IMPLEMENTED"); // target.stackToUse.getItem().onItemUse(target.stackToUse, // CoreProxy.getBuildCraftPlayer(worldObj), worldObj, target.x, target.y - 1, // target.z, 1); } else { try { target.buildBlock(a.context); } catch (Throwable t) { // Defensive code against errors in implementers t.printStackTrace(); BuildCraftCore.bcLog.throwing("EntityRobot", "update", t); } } } targets.pop(); } } else if (a.builder != null) { a.builder.postProcessing(worldObj); targets.pop(); } } } public void updateWait() { if (targets.size() > 0) if (wait == 0) { wait = MAX_TARGETS - targets.size() + 2; } else { wait--; } } private void updateLaser() { if (laser == null) return; if (targets.size() > 0) { Action a = targets.getFirst(); BptSlotInfo target = a.slot; if (target != null) { laser.setPositions(new Position(posX, posY, posZ), new Position(target.x + 0.5, target.y + 0.5, target.z + 0.5)); laser.show(); } } else { laser.hide(); } laser.pushPower(((float) targets.size()) / ((float) MAX_TARGETS) * 4F); } public void scheduleContruction(BptSlot slot, BptContext context) { if (slot != null) { targets.add(new Action(slot, context)); } } public void markEndOfBlueprint(BptBuilderBase builder) { targets.add(new Action(builder)); } public boolean readyToBuild() { return targets.size() < MAX_TARGETS; } public boolean done() { return targets.isEmpty(); } public void setBox(Box box) { this.box = box; setDestination((int) box.centerX(), (int) box.centerY(), (int) box.centerZ()); } @Override public void setDead() { if (laser != null) { laser.setDead(); } super.setDead(); } }