package codechicken.lib.inventory;
import codechicken.lib.vec.Vector3;
import com.google.common.base.Objects;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Items;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.InventoryLargeChest;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTBase;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityChest;
import net.minecraft.util.BlockPos;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumFacing.Plane;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;
public class InventoryUtils {
/**
* Constructor for ItemStack with tag
*/
public static ItemStack newItemStack(Item item, int size, int damage, NBTTagCompound tag) {
ItemStack stack = new ItemStack(item, size, damage);
stack.setTagCompound(tag);
return stack;
}
/**
* Gets the actual damage of an item without asking the Item
*/
public static int actualDamage(ItemStack stack) {
return Items.diamond.getDamage(stack);
}
/**
* Static default implementation for IInventory method
*/
public static ItemStack decrStackSize(IInventory inv, int slot, int size) {
ItemStack item = inv.getStackInSlot(slot);
if (item != null) {
if (item.stackSize <= size) {
inv.setInventorySlotContents(slot, null);
inv.markDirty();
return item;
}
ItemStack itemstack1 = item.splitStack(size);
if (item.stackSize == 0) {
inv.setInventorySlotContents(slot, null);
} else {
inv.setInventorySlotContents(slot, item);
}
inv.markDirty();
return itemstack1;
}
return null;
}
/**
* Static default implementation for IInventory method
*/
public static ItemStack getStackInSlotOnClosing(IInventory inv, int slot) {
ItemStack stack = inv.getStackInSlot(slot);
inv.setInventorySlotContents(slot, null);
return stack;
}
/**
* @return The quantity of items from addition that can be added to base
*/
public static int incrStackSize(ItemStack base, ItemStack addition) {
if (canStack(base, addition)) {
return incrStackSize(base, addition.stackSize);
}
return 0;
}
/**
* @return The quantity of items from addition that can be added to base
*/
public static int incrStackSize(ItemStack base, int addition) {
int totalSize = base.stackSize + addition;
if (totalSize <= base.getMaxStackSize()) {
return addition;
} else if (base.stackSize < base.getMaxStackSize()) {
return base.getMaxStackSize() - base.stackSize;
}
return 0;
}
/**
* NBT item saving function
*/
public static NBTTagList writeItemStacksToTag(ItemStack[] items) {
return writeItemStacksToTag(items, 64);
}
/**
* NBT item saving function with support for stack sizes > 32K
*/
public static NBTTagList writeItemStacksToTag(ItemStack[] items, int maxQuantity) {
NBTTagList tagList = new NBTTagList();
for (int i = 0; i < items.length; i++) {
if (items[i] != null) {
NBTTagCompound tag = new NBTTagCompound();
tag.setShort("Slot", (short) i);
items[i].writeToNBT(tag);
if (maxQuantity > Short.MAX_VALUE) {
tag.setInteger("Quantity", items[i].stackSize);
} else if (maxQuantity > Byte.MAX_VALUE) {
tag.setShort("Quantity", (short) items[i].stackSize);
}
tagList.appendTag(tag);
}
}
return tagList;
}
/**
* NBT item loading function with support for stack sizes > 32K
*/
public static void readItemStacksFromTag(ItemStack[] items, NBTTagList tagList) {
for (int i = 0; i < tagList.tagCount(); i++) {
NBTTagCompound tag = tagList.getCompoundTagAt(i);
int b = tag.getShort("Slot");
items[b] = ItemStack.loadItemStackFromNBT(tag);
if (tag.hasKey("Quantity")) {
items[b].stackSize = ((NBTBase.NBTPrimitive) tag.getTag("Quantity")).getInt();
}
}
}
/**
* Spawns an itemstack in the world at a location
*/
public static void dropItem(ItemStack stack, World world, Vector3 dropLocation) {
EntityItem item = new EntityItem(world, dropLocation.x, dropLocation.y, dropLocation.z, stack);
item.motionX = world.rand.nextGaussian() * 0.05;
item.motionY = world.rand.nextGaussian() * 0.05 + 0.2F;
item.motionZ = world.rand.nextGaussian() * 0.05;
world.spawnEntityInWorld(item);
}
/**
* Copies an itemstack with a new quantity
*/
public static ItemStack copyStack(ItemStack stack, int quantity) {
if (stack == null) {
return null;
}
stack = stack.copy();
stack.stackSize = quantity;
return stack;
}
/**
* Gets the maximum quantity of an item that can be inserted into inv
*/
public static int getInsertibleQuantity(InventoryRange inv, ItemStack stack) {
int quantity = 0;
stack = copyStack(stack, Integer.MAX_VALUE);
for (int slot : inv.slots) {
quantity += fitStackInSlot(inv, slot, stack);
}
return quantity;
}
public static int getInsertibleQuantity(IInventory inv, ItemStack stack) {
return getInsertibleQuantity(new InventoryRange(inv), stack);
}
public static int fitStackInSlot(InventoryRange inv, int slot, ItemStack stack) {
ItemStack base = inv.inv.getStackInSlot(slot);
if (!canStack(base, stack) || !inv.canInsertItem(slot, stack)) {
return 0;
}
int fit = base != null ? incrStackSize(base, inv.inv.getInventoryStackLimit() - base.stackSize) : inv.inv.getInventoryStackLimit();
return Math.min(fit, stack.stackSize);
}
public static int fitStackInSlot(IInventory inv, int slot, ItemStack stack) {
return fitStackInSlot(new InventoryRange(inv), slot, stack);
}
/**
* @param simulate If set to true, no items will actually be inserted
* @return The number of items unable to be inserted
*/
public static int insertItem(InventoryRange inv, ItemStack stack, boolean simulate) {
stack = stack.copy();
for (int pass = 0; pass < 2; pass++) {
for (int slot : inv.slots) {
ItemStack base = inv.inv.getStackInSlot(slot);
if ((pass == 0) == (base == null)) {
continue;
}
int fit = fitStackInSlot(inv, slot, stack);
if (fit == 0) {
continue;
}
if (base != null) {
stack.stackSize -= fit;
if (!simulate) {
base.stackSize += fit;
inv.inv.setInventorySlotContents(slot, base);
}
} else {
if (!simulate) {
inv.inv.setInventorySlotContents(slot, copyStack(stack, fit));
}
stack.stackSize -= fit;
}
if (stack.stackSize == 0) {
return 0;
}
}
}
return stack.stackSize;
}
public static int insertItem(IInventory inv, ItemStack stack, boolean simulate) {
return insertItem(new InventoryRange(inv), stack, simulate);
}
/**
* Gets the stack in slot if it can be extracted
*/
public static ItemStack getExtractableStack(InventoryRange inv, int slot) {
ItemStack stack = inv.inv.getStackInSlot(slot);
if (stack == null || !inv.canExtractItem(slot, stack)) {
return null;
}
return stack;
}
public static ItemStack getExtractableStack(IInventory inv, int slot) {
return getExtractableStack(new InventoryRange(inv), slot);
}
public static boolean areStacksIdentical(ItemStack stack1, ItemStack stack2) {
if (stack1 == null || stack2 == null) {
return stack1 == stack2;
}
return stack1.getItem() == stack2.getItem() && stack1.getItemDamage() == stack2.getItemDamage() && stack1.stackSize == stack2.stackSize && Objects.equal(stack1.getTagCompound(), stack2.getTagCompound());
}
/**
* Gets an IInventory from a coordinate with support for double chests
*/
public static IInventory getInventory(World world, BlockPos pos) {
TileEntity tile = world.getTileEntity(pos);
if (!(tile instanceof IInventory)) {
return null;
}
if (tile instanceof TileEntityChest) {
return getChest((TileEntityChest) tile);
}
return (IInventory) tile;
}
public static IInventory getChest(TileEntityChest chest) {
for (EnumFacing fside : Plane.HORIZONTAL) {
if (chest.getWorld().getBlockState(chest.getPos().offset(fside)).getBlock() == chest.getBlockType()) {
return new InventoryLargeChest("container.chestDouble", (TileEntityChest) chest.getWorld().getTileEntity(chest.getPos().offset(fside)), chest);
}
}
return chest;
}
public static boolean canStack(ItemStack stack1, ItemStack stack2) {
return stack1 == null || stack2 == null ||
(stack1.getItem() == stack2.getItem() &&
(!stack2.getHasSubtypes() || stack2.getItemDamage() == stack1.getItemDamage()) &&
ItemStack.areItemStackTagsEqual(stack2, stack1)) && stack1.isStackable();
}
/**
* Consumes one item from slot in inv with support for containers.
*/
public static void consumeItem(IInventory inv, int slot) {
ItemStack stack = inv.getStackInSlot(slot);
Item item = stack.getItem();
if (item.hasContainerItem(stack)) {
ItemStack container = item.getContainerItem(stack);
inv.setInventorySlotContents(slot, container);
} else {
inv.decrStackSize(slot, 1);
}
}
/**
* Gets the size of the stack in a slot. Returns 0 on null stacks
*/
public static int stackSize(IInventory inv, int slot) {
ItemStack stack = inv.getStackInSlot(slot);
return stack == null ? 0 : stack.stackSize;
}
/**
* Drops all items from inv using getStackInSlotOnClosing
*/
public static void dropOnClose(EntityPlayer player, IInventory inv) {
for (int i = 0; i < inv.getSizeInventory(); i++) {
ItemStack stack = inv.removeStackFromSlot(i);
if (stack != null) {
player.dropPlayerItemWithRandomChoice(stack, false);
}
}
}
public static NBTTagCompound savePersistant(ItemStack stack, NBTTagCompound tag) {
stack.writeToNBT(tag);
tag.removeTag("id");
tag.setString("name", Item.itemRegistry.getNameForObject(stack.getItem()).toString());
return tag;
}
public static ItemStack loadPersistant(NBTTagCompound tag) {
String name = tag.getString("name");
Item item = (Item) Item.itemRegistry.getObject(new ResourceLocation(name));
if (item == null) {
return null;
}
int count = tag.hasKey("Count") ? tag.getByte("Count") : 1;
int damage = tag.hasKey("Damage") ? tag.getShort("Damage") : 0;
ItemStack stack = new ItemStack(item, count, damage);
if (tag.hasKey("tag", 10)) {
stack.setTagCompound(tag.getCompoundTag("tag"));
}
return stack;
}
}