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SchematicBlock.java
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SchematicBlock.java
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/**
* Copyright (c) 2011-2014, 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.api.blueprints;
import java.util.ArrayList;
import java.util.LinkedList;
import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import buildcraft.core.utils.Utils;
public class SchematicBlock extends Schematic implements Comparable<SchematicBlock> {
public Block block = null;
public int meta = 0;
/**
* This field contains requirements for a given block when stored in the
* blueprint. Modders can either rely on this list or compute their own int
* Schematic.
*/
public ItemStack [] storedRequirements = new ItemStack [0];
/**
* Returns the requirements needed to build this block. When the
* requirements are met, they will be removed all at once from the builder,
* before calling buildBlock.
*/
@Override
public void addRequirements(IBuilderContext context, LinkedList<ItemStack> requirements) {
if (block != null) {
if (storedRequirements.length != 0) {
for (ItemStack s : storedRequirements) {
requirements.add(s);
}
} else {
requirements.add(new ItemStack(block, 1, meta));
}
}
}
/**
* This is called each time an item matches a reqquirement, that is: (req id
* == stack id) for damageable items (req id == stack id && req dmg == stack
* dmg) for other items by default, it will increase damage of damageable
* items by the amount of damage of the requirement, and remove the intended
* amount of non damageable item.
*
* Client may override this behavior for default items. Note that this
* subprogram may be called twice with the same parameters, once with a copy
* of requirements and stack to check if the entire requirements can be
* fullfilled, and once with the real inventory. Implementer is responsible
* for updating req (with the remaining requirements if any) and stack
* (after usage)
*
* returns: what was used (similer to req, but created from stack, so that
* any NBT based differences are drawn from the correct source)
*/
@Override
public ItemStack useItem(IBuilderContext context, ItemStack req, ItemStack stack) {
ItemStack result = stack.copy();
if (stack.isItemStackDamageable()) {
if (req.getItemDamage() + stack.getItemDamage() <= stack.getMaxDamage()) {
stack.setItemDamage(req.getItemDamage() + stack.getItemDamage());
result.setItemDamage(req.getItemDamage());
req.stackSize = 0;
}
if (stack.getItemDamage() >= stack.getMaxDamage()) {
stack.stackSize = 0;
}
} else {
if (stack.stackSize >= req.stackSize) {
result.stackSize = req.stackSize;
stack.stackSize -= req.stackSize;
req.stackSize = 0;
} else {
req.stackSize -= stack.stackSize;
stack.stackSize = 0;
}
}
if (stack.stackSize == 0 && stack.getItem().getContainerItem() != null) {
Item container = stack.getItem().getContainerItem();
//stack.itemID = container.itemID;
stack.stackSize = 1;
stack.setItemDamage(0);
}
return result;
}
/**
* Return true if the block on the world correspond to the block stored in
* the blueprint at the location given by the slot. By default, this
* subprogram is permissive and doesn't take into account metadata.
*/
@Override
public boolean isValid(IBuilderContext context, int x, int y, int z) {
return block == context.world().getBlock(x, y, z) && meta == context.world().getBlockMetadata(x, y, z);
}
/**
* Perform a 90 degree rotation to the slot.
*/
@Override
public void rotateLeft(IBuilderContext context) {
}
/**
* Places the block in the world, at the location specified in the slot.
*/
@Override
public void writeToWorld(IBuilderContext context, int x, int y, int z, LinkedList <ItemStack> stacks) {
// Meta needs to be specified twice, depending on the block behavior
context.world().setBlock(x, y, z, block, meta, 3);
context.world().setBlockMetadataWithNotify(x, y, z, meta, 3);
}
/**
* Return true if the block should not be placed to the world. Requirements
* will not be asked on such a block, and building will not be called.
*/
@Override
public boolean ignoreBuilding() {
return false;
}
/**
* Initializes a slot from the blueprint according to an objet placed on {x,
* y, z} on the world. This typically means adding entries in slot.cpt. Note
* that "id" and "meta" will be set automatically, corresponding to the
* block id and meta.
*
* By default, if the block is a BlockContainer, tile information will be to
* save / load the block.
*/
@Override
public void readFromWorld(IBuilderContext context, int x, int y, int z) {
if (block != null) {
ArrayList<ItemStack> req = block.getDrops(context.world(), x,
y, z, context.world().getBlockMetadata(x, y, z), 0);
if (req != null) {
storedRequirements = new ItemStack [req.size()];
req.toArray(storedRequirements);
}
}
}
@Override
public void writeToNBT(NBTTagCompound nbt, MappingRegistry registry) {
nbt.setInteger("blockId", registry.getIdForBlock(block));
nbt.setInteger("blockMeta", meta);
NBTTagList rq = new NBTTagList();
for (ItemStack stack : storedRequirements) {
NBTTagCompound sub = new NBTTagCompound();
stack.writeToNBT(stack.writeToNBT(sub));
sub.setInteger("id", registry.getIdForItem(stack.getItem()));
rq.appendTag(sub);
}
nbt.setTag("rq", rq);
}
@Override
public void readFromNBT(NBTTagCompound nbt, MappingRegistry registry) {
block = registry.getBlockForId(nbt.getInteger("blockId"));
meta = nbt.getInteger("blockMeta");
NBTTagList rq = nbt.getTagList("rq", Utils.NBTTag_Types.NBTTagCompound.ordinal());
ArrayList<ItemStack> rqs = new ArrayList<ItemStack>();
for (int i = 0; i < rq.tagCount(); ++i) {
try {
NBTTagCompound sub = rq.getCompoundTagAt(i);
if (sub.getInteger("id") >= 0) {
// Maps the id in the blueprint to the id in the world
sub.setInteger("id", Item.itemRegistry
.getIDForObject(registry.getItemForId(sub
.getInteger("id"))));
rqs.add(ItemStack.loadItemStackFromNBT(sub));
} else {
// TODO: requirement can't be retreived, this blueprint is
// only useable in creative
}
} catch (Throwable t) {
t.printStackTrace();
// TODO: requirement can't be retreived, this blueprint is
// only useable in creative
}
}
storedRequirements = rqs.toArray(new ItemStack [rqs.size()]);
}
@Override
public int compareTo(SchematicBlock o) {
if (block.isOpaqueCube() == o.block.isOpaqueCube()) {
return 0;
} else if (block.isOpaqueCube()) {
return -1;
} else {
return 1;
}
}
}