Java tutorial
/** * This class was created by <Vazkii>. It's distributed as * part of the Botania Mod. Get the Source Code in github: * https://github.com/Vazkii/Botania * * Botania is Open Source and distributed under the * Botania License: http://botaniamod.net/license.php * * File Created @ [Nov 8, 2014, 5:25:32 PM (GMT)] */ package vazkii.botania.common.block.tile; import java.util.List; import com.google.common.base.Predicates; import net.minecraft.block.Block; import net.minecraft.entity.Entity; import net.minecraft.entity.item.EntityItem; import net.minecraft.init.Blocks; import net.minecraft.item.ItemStack; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.util.SoundCategory; import net.minecraft.util.math.AxisAlignedBB; import net.minecraft.util.math.BlockPos; import vazkii.botania.api.internal.VanillaPacketDispatcher; import vazkii.botania.api.lexicon.multiblock.Multiblock; import vazkii.botania.api.lexicon.multiblock.MultiblockSet; import vazkii.botania.api.mana.IManaPool; import vazkii.botania.api.mana.spark.ISparkAttachable; import vazkii.botania.api.mana.spark.ISparkEntity; import vazkii.botania.api.mana.spark.SparkHelper; import vazkii.botania.api.sound.BotaniaSoundEvents; import vazkii.botania.common.Botania; import vazkii.botania.common.block.ModBlocks; import vazkii.botania.common.block.tile.mana.TilePool; import vazkii.botania.common.item.ModItems; import vazkii.botania.common.network.PacketBotaniaEffect; import vazkii.botania.common.network.PacketHandler; public class TileTerraPlate extends TileMod implements ISparkAttachable { public static final int MAX_MANA = TilePool.MAX_MANA / 2; private static final BlockPos[] LAPIS_BLOCKS = { new BlockPos(1, 0, 0), new BlockPos(-1, 0, 0), new BlockPos(0, 0, 1), new BlockPos(0, 0, -1) }; private static final BlockPos[] LIVINGROCK_BLOCKS = { new BlockPos(0, 0, 0), new BlockPos(1, 0, 1), new BlockPos(1, 0, -1), new BlockPos(-1, 0, 1), new BlockPos(-1, 0, -1) }; private static final String TAG_MANA = "mana"; int mana; public static MultiblockSet makeMultiblockSet() { Multiblock mb = new Multiblock(); for (BlockPos relativePos : LAPIS_BLOCKS) mb.addComponent(relativePos, Blocks.LAPIS_BLOCK.getDefaultState()); for (BlockPos relativePos : LIVINGROCK_BLOCKS) mb.addComponent(relativePos, ModBlocks.livingrock.getDefaultState()); mb.addComponent(new BlockPos(0, 1, 0), ModBlocks.terraPlate.getDefaultState()); mb.setRenderOffset(new BlockPos(0, 1, 0)); return mb.makeSet(); } @Override public void update() { if (worldObj.isRemote) return; boolean removeMana = true; if (hasValidPlatform()) { List<EntityItem> items = getItems(); if (areItemsValid(items)) { removeMana = false; ISparkEntity spark = getAttachedSpark(); if (spark != null) { List<ISparkEntity> sparkEntities = SparkHelper.getSparksAround(worldObj, pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5); for (ISparkEntity otherSpark : sparkEntities) { if (spark == otherSpark) continue; if (otherSpark.getAttachedTile() != null && otherSpark.getAttachedTile() instanceof IManaPool) otherSpark.registerTransfer(spark); } } if (mana > 0) { VanillaPacketDispatcher.dispatchTEToNearbyPlayers(worldObj, pos); PacketHandler.sendToNearby(worldObj, getPos(), new PacketBotaniaEffect(PacketBotaniaEffect.EffectType.TERRA_PLATE, getPos().getX(), getPos().getY(), getPos().getZ())); } if (mana >= MAX_MANA) { EntityItem item = items.get(0); for (EntityItem otherItem : items) if (otherItem != item) otherItem.setDead(); else item.setEntityItemStack(new ItemStack(ModItems.manaResource, 1, 4)); worldObj.playSound(null, item.posX, item.posY, item.posZ, BotaniaSoundEvents.terrasteelCraft, SoundCategory.BLOCKS, 1, 1); mana = 0; worldObj.updateComparatorOutputLevel(pos, worldObj.getBlockState(pos).getBlock()); VanillaPacketDispatcher.dispatchTEToNearbyPlayers(worldObj, pos); } } } if (removeMana) recieveMana(-1000); } List<EntityItem> getItems() { return worldObj.getEntitiesWithinAABB(EntityItem.class, new AxisAlignedBB(pos, pos.add(1, 1, 1))); } boolean areItemsValid(List<EntityItem> items) { if (items.size() != 3) return false; ItemStack ingot = null; ItemStack pearl = null; ItemStack diamond = null; for (EntityItem item : items) { ItemStack stack = item.getEntityItem(); if (stack.getItem() != ModItems.manaResource || stack.stackSize != 1) return false; int meta = stack.getItemDamage(); if (meta == 0) ingot = stack; else if (meta == 1) pearl = stack; else if (meta == 2) diamond = stack; else return false; } return ingot != null && pearl != null && diamond != null; } boolean hasValidPlatform() { return checkAll(LAPIS_BLOCKS, Blocks.LAPIS_BLOCK) && checkAll(LIVINGROCK_BLOCKS, ModBlocks.livingrock); } boolean checkAll(BlockPos[] relPositions, Block block) { for (BlockPos position : relPositions) { if (!checkPlatform(position.getX(), position.getZ(), block)) return false; } return true; } boolean checkPlatform(int xOff, int zOff, Block block) { return worldObj.getBlockState(pos.add(xOff, -1, zOff)).getBlock() == block; } @Override public void writePacketNBT(NBTTagCompound cmp) { cmp.setInteger(TAG_MANA, mana); } @Override public void readPacketNBT(NBTTagCompound cmp) { mana = cmp.getInteger(TAG_MANA); } @Override public int getCurrentMana() { return mana; } @Override public boolean isFull() { return mana >= MAX_MANA; } @Override public void recieveMana(int mana) { this.mana = Math.max(0, Math.min(MAX_MANA, this.mana + mana)); worldObj.updateComparatorOutputLevel(pos, worldObj.getBlockState(pos).getBlock()); } @Override public boolean canRecieveManaFromBursts() { return areItemsValid(getItems()); } @Override public boolean canAttachSpark(ItemStack stack) { return true; } @Override public void attachSpark(ISparkEntity entity) { } @Override public ISparkEntity getAttachedSpark() { List<Entity> sparks = worldObj.getEntitiesWithinAABB(Entity.class, new AxisAlignedBB(pos.up(), pos.up().add(1, 1, 1)), Predicates.instanceOf(ISparkEntity.class)); if (sparks.size() == 1) { Entity e = sparks.get(0); return (ISparkEntity) e; } return null; } @Override public boolean areIncomingTranfersDone() { return !areItemsValid(getItems()); } @Override public int getAvailableSpaceForMana() { return Math.max(0, MAX_MANA - getCurrentMana()); } }