Java tutorial
/* * This file is part of Applied Energistics 2. * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved. * * Applied Energistics 2 is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Applied Energistics 2 is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>. */ package appeng.util.item; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.security.InvalidParameterException; import java.util.List; import javax.annotation.Nullable; import io.netty.buffer.ByteBuf; import net.minecraft.item.Item; import net.minecraft.item.ItemStack; import net.minecraft.nbt.CompressedStreamTools; import net.minecraft.nbt.NBTTagCompound; import net.minecraft.util.ResourceLocation; import net.minecraftforge.fml.relauncher.Side; import net.minecraftforge.fml.relauncher.SideOnly; import appeng.api.config.FuzzyMode; import appeng.api.storage.StorageChannel; import appeng.api.storage.data.IAEItemStack; import appeng.api.storage.data.IAETagCompound; import appeng.util.Platform; public final class AEItemStack extends AEStack<IAEItemStack> implements IAEItemStack, Comparable<AEItemStack> { private AEItemDef def; private AEItemStack(final AEItemStack is) { this.setDefinition(is.getDefinition()); this.setStackSize(is.getStackSize()); this.setCraftable(is.isCraftable()); this.setCountRequestable(is.getCountRequestable()); } private AEItemStack(final ItemStack is) { if (is == null) { throw new InvalidParameterException("null is not a valid ItemStack for AEItemStack."); } final Item item = is.getItem(); if (item == null) { throw new InvalidParameterException( "Contained item is null, thus not a valid ItemStack for AEItemStack."); } this.setDefinition(new AEItemDef(item)); if (this.getDefinition().getItem() == null) { throw new InvalidParameterException("This ItemStack is bad, it has a null item."); } /* * Prevent an Item from changing the damage value on me... Either, this or a core mod. */ /* * Super hackery. * is.itemID = appeng.api.Materials.matQuartz.itemID; damageValue = is.getItemDamage(); is.itemID = itemID; */ /* * Kinda hackery */ this.getDefinition().setDamageValue(this.def.getDamageValueHack(is)); if (!is.getItem().isDamageable()) { this.getDefinition().setDisplayDamage(Integer.MAX_VALUE); } else { this.getDefinition() .setDisplayDamage((int) (is.getItem().getDurabilityForDisplay(is) * Integer.MAX_VALUE)); } this.getDefinition().setMaxDamage(is.getMaxDamage()); final NBTTagCompound tagCompound = is.getTagCompound(); if (tagCompound != null) { this.getDefinition().setTagCompound((AESharedNBT) AESharedNBT.getSharedTagCompound(tagCompound, is)); } this.setStackSize(is.stackSize); this.setCraftable(false); this.setCountRequestable(0); this.getDefinition().reHash(); this.getDefinition().setIsOre(OreHelper.INSTANCE.isOre(is)); } public static IAEItemStack loadItemStackFromNBT(final NBTTagCompound i) { if (i == null) { return null; } final ItemStack itemstack = ItemStack.loadItemStackFromNBT(i); if (itemstack == null) { return null; } final AEItemStack item = AEItemStack.create(itemstack); // item.priority = i.getInteger( "Priority" ); item.setStackSize(i.getLong("Cnt")); item.setCountRequestable(i.getLong("Req")); item.setCraftable(i.getBoolean("Craft")); return item; } @Nullable public static AEItemStack create(final ItemStack stack) { if (stack == null) { return null; } return new AEItemStack(stack); } public static IAEItemStack loadItemStackFromPacket(final ByteBuf data) throws IOException { final byte mask = data.readByte(); // byte PriorityType = (byte) (mask & 0x03); final byte stackType = (byte) ((mask & 0x0C) >> 2); final byte countReqType = (byte) ((mask & 0x30) >> 4); final boolean isCraftable = (mask & 0x40) > 0; final boolean hasTagCompound = (mask & 0x80) > 0; // don't send this... final NBTTagCompound d = new NBTTagCompound(); // For some insane reason, Vanilla can only parse numeric item ids if they are strings short itemNumericId = data.readShort(); d.setString("id", String.valueOf(itemNumericId)); d.setShort("Damage", data.readShort()); d.setByte("Count", (byte) 0); if (hasTagCompound) { final int len = data.readInt(); final byte[] bd = new byte[len]; data.readBytes(bd); final ByteArrayInputStream di = new ByteArrayInputStream(bd); d.setTag("tag", CompressedStreamTools.read(new DataInputStream(di))); } // long priority = getPacketValue( PriorityType, data ); final long stackSize = getPacketValue(stackType, data); final long countRequestable = getPacketValue(countReqType, data); final ItemStack itemstack = ItemStack.loadItemStackFromNBT(d); if (itemstack == null) { return null; } final AEItemStack item = AEItemStack.create(itemstack); // item.priority = (int) priority; item.setStackSize(stackSize); item.setCountRequestable(countRequestable); item.setCraftable(isCraftable); return item; } @Override public void add(final IAEItemStack option) { if (option == null) { return; } // if ( priority < ((AEItemStack) option).priority ) // priority = ((AEItemStack) option).priority; this.incStackSize(option.getStackSize()); this.setCountRequestable(this.getCountRequestable() + option.getCountRequestable()); this.setCraftable(this.isCraftable() || option.isCraftable()); } @Override public void writeToNBT(final NBTTagCompound i) { /* * Mojang Fucked this over ; GC Optimization - Ugly Yes, but it saves a lot in the memory department. */ /* * NBTBase id = i.getTag( "id" ); NBTBase Count = i.getTag( "Count" ); NBTBase Cnt = i.getTag( "Cnt" ); NBTBase * Req = i.getTag( "Req" ); NBTBase Craft = i.getTag( "Craft" ); NBTBase Damage = i.getTag( "Damage" ); */ /* * if ( id != null && id instanceof NBTTagShort ) ((NBTTagShort) id).data = (short) this.def.item.itemID; else */ // i.setShort( "id", (short) Item.REGISTRY.getIDForObject( this.getDefinition().getItem() ) ); ResourceLocation resourcelocation = Item.REGISTRY.getNameForObject(this.getItem()); i.setString("id", resourcelocation == null ? "minecraft:air" : resourcelocation.toString()); /* * if ( Count != null && Count instanceof NBTTagByte ) ((NBTTagByte) Count).data = (byte) 0; else */ i.setByte("Count", (byte) 0); /* * if ( Cnt != null && Cnt instanceof NBTTagLong ) ((NBTTagLong) Cnt).data = this.stackSize; else */ i.setLong("Cnt", this.getStackSize()); /* * if ( Req != null && Req instanceof NBTTagLong ) ((NBTTagLong) Req).data = this.stackSize; else */ i.setLong("Req", this.getCountRequestable()); /* * if ( Craft != null && Craft instanceof NBTTagByte ) ((NBTTagByte) Craft).data = (byte) (this.isCraftable() ? * 1 : 0); else */ i.setBoolean("Craft", this.isCraftable()); /* * if ( Damage != null && Damage instanceof NBTTagShort ) ((NBTTagShort) Damage).data = (short) * this.def.damageValue; else */ i.setShort("Damage", (short) this.getDefinition().getDamageValue()); if (this.getDefinition().getTagCompound() != null) { i.setTag("tag", this.getDefinition().getTagCompound()); } else { i.removeTag("tag"); } } @Override public boolean fuzzyComparison(final Object st, final FuzzyMode mode) { if (st instanceof IAEItemStack) { final IAEItemStack o = (IAEItemStack) st; if (this.sameOre(o)) { return true; } if (o.getItem() == this.getItem()) { if (this.getDefinition().getItem().isDamageable()) { final ItemStack a = this.getItemStack(); final ItemStack b = o.getItemStack(); try { if (mode == FuzzyMode.IGNORE_ALL) { return true; } else if (mode == FuzzyMode.PERCENT_99) { final Item ai = a.getItem(); final Item bi = b.getItem(); return (ai.getDurabilityForDisplay(a) < 0.001f) == (bi .getDurabilityForDisplay(b) < 0.001f); } else { final Item ai = a.getItem(); final Item bi = b.getItem(); final float percentDamageOfA = 1.0f - (float) ai.getDurabilityForDisplay(a); final float percentDamageOfB = 1.0f - (float) bi.getDurabilityForDisplay(b); return (percentDamageOfA > mode.breakPoint) == (percentDamageOfB > mode.breakPoint); } } catch (final Throwable e) { if (mode == FuzzyMode.IGNORE_ALL) { return true; } else if (mode == FuzzyMode.PERCENT_99) { return (a.getItemDamage() > 1) == (b.getItemDamage() > 1); } else { final float percentDamageOfA = (float) a.getItemDamage() / (float) a.getMaxDamage(); final float percentDamageOfB = (float) b.getItemDamage() / (float) b.getMaxDamage(); return (percentDamageOfA > mode.breakPoint) == (percentDamageOfB > mode.breakPoint); } } } return this.getItemDamage() == o.getItemDamage(); } } if (st instanceof ItemStack) { final ItemStack o = (ItemStack) st; OreHelper.INSTANCE.sameOre(this, o); if (o.getItem() == this.getItem()) { if (this.getDefinition().getItem().isDamageable()) { final ItemStack a = this.getItemStack(); try { if (mode == FuzzyMode.IGNORE_ALL) { return true; } else if (mode == FuzzyMode.PERCENT_99) { final Item ai = a.getItem(); final Item bi = o.getItem(); return (ai.getDurabilityForDisplay(a) < 0.001f) == (bi .getDurabilityForDisplay(o) < 0.001f); } else { final Item ai = a.getItem(); final Item bi = o.getItem(); final float percentDamageOfA = 1.0f - (float) ai.getDurabilityForDisplay(a); final float percentDamageOfB = 1.0f - (float) bi.getDurabilityForDisplay(o); return (percentDamageOfA > mode.breakPoint) == (percentDamageOfB > mode.breakPoint); } } catch (final Throwable e) { if (mode == FuzzyMode.IGNORE_ALL) { return true; } else if (mode == FuzzyMode.PERCENT_99) { return (a.getItemDamage() > 1) == (o.getItemDamage() > 1); } else { final float percentDamageOfA = (float) a.getItemDamage() / (float) a.getMaxDamage(); final float percentDamageOfB = (float) o.getItemDamage() / (float) o.getMaxDamage(); return (percentDamageOfA > mode.breakPoint) == (percentDamageOfB > mode.breakPoint); } } } return this.getItemDamage() == o.getItemDamage(); } } return false; } @Override public IAEItemStack copy() { return new AEItemStack(this); } @Override public IAEItemStack empty() { final IAEItemStack dup = this.copy(); dup.reset(); return dup; } @Override public IAETagCompound getTagCompound() { return this.getDefinition().getTagCompound(); } @Override public boolean isItem() { return true; } @Override public boolean isFluid() { return false; } @Override public StorageChannel getChannel() { return StorageChannel.ITEMS; } @Override public ItemStack getItemStack() { final ItemStack is = new ItemStack(this.getDefinition().getItem(), (int) Math.min(Integer.MAX_VALUE, this.getStackSize()), this.getDefinition().getDamageValue()); if (this.getDefinition().getTagCompound() != null) { is.setTagCompound(this.getDefinition().getTagCompound().getNBTTagCompoundCopy()); } return is; } @Override public Item getItem() { return this.getDefinition().getItem(); } @Override public int getItemDamage() { return this.getDefinition().getDamageValue(); } @Override public boolean sameOre(final IAEItemStack is) { return OreHelper.INSTANCE.sameOre(this, is); } @Override public boolean isSameType(final IAEItemStack otherStack) { if (otherStack == null) { return false; } return this.getDefinition().equals(((AEItemStack) otherStack).getDefinition()); } @Override public boolean isSameType(final ItemStack otherStack) { if (otherStack == null) { return false; } return this.getDefinition().isItem(otherStack); } @Override public int hashCode() { return this.getDefinition().getMyHash(); } @Override public boolean equals(final Object ia) { if (ia instanceof AEItemStack) { return ((AEItemStack) ia).getDefinition().equals(this.def);// && def.tagCompound == ((AEItemStack) // ia).def.tagCompound; } else if (ia instanceof ItemStack) { final ItemStack is = (ItemStack) ia; if (is.getItem() == this.getDefinition().getItem() && is.getItemDamage() == this.getDefinition().getDamageValue()) { final NBTTagCompound ta = this.getDefinition().getTagCompound(); final NBTTagCompound tb = is.getTagCompound(); if (ta == tb) { return true; } if ((ta == null && tb == null) || (ta != null && ta.hasNoTags() && tb == null) || (tb != null && tb.hasNoTags() && ta == null) || (ta != null && ta.hasNoTags() && tb != null && tb.hasNoTags())) { return true; } if ((ta == null && tb != null) || (ta != null && tb == null)) { return false; } if (AESharedNBT.isShared(tb)) { return ta == tb; } return Platform.itemComparisons().isNbtTagEqual(ta, tb); } } return false; } @Override public String toString() { return this.getItemStack().toString(); } @Override public int compareTo(final AEItemStack b) { final int id = this.getDefinition().getItemID() - b.getDefinition().getItemID(); if (id != 0) { return id; } final int damageValue = this.getDefinition().getDamageValue() - b.getDefinition().getDamageValue(); if (damageValue != 0) { return damageValue; } final int displayDamage = this.getDefinition().getDisplayDamage() - b.getDefinition().getDisplayDamage(); if (displayDamage != 0) { return displayDamage; } return (this.getDefinition().getTagCompound() == b.getDefinition().getTagCompound()) ? 0 : this.compareNBT(b.getDefinition()); } private int compareNBT(final AEItemDef b) { final int nbt = this.compare( (this.getDefinition().getTagCompound() == null ? 0 : this.getDefinition().getTagCompound().getHash()), (b.getTagCompound() == null ? 0 : b.getTagCompound().getHash())); if (nbt == 0) { return this.compare(System.identityHashCode(this.getDefinition().getTagCompound()), System.identityHashCode(b.getTagCompound())); } return nbt; } private int compare(final int l, final int m) { return l < m ? -1 : (l > m ? 1 : 0); } @SideOnly(Side.CLIENT) public List getToolTip() { if (this.getDefinition().getTooltip() != null) { return this.getDefinition().getTooltip(); } return this.getDefinition().setTooltip(Platform.getTooltip(this.getItemStack())); } @SideOnly(Side.CLIENT) public String getDisplayName() { if (this.getDefinition().getDisplayName() == null) { this.getDefinition().setDisplayName(Platform.getItemDisplayName(this.getItemStack())); } return this.getDefinition().getDisplayName(); } @SideOnly(Side.CLIENT) public String getModID() { if (this.getDefinition().getUniqueID() != null) { return this.getModName(this.getDefinition().getUniqueID()); } return this.getModName( this.getDefinition().setUniqueID(Item.REGISTRY.getNameForObject(this.getDefinition().getItem()))); } private String getModName(final ResourceLocation uniqueIdentifier) { if (uniqueIdentifier == null) { return "** Null"; } return uniqueIdentifier.getResourceDomain() == null ? "** Null" : uniqueIdentifier.getResourceDomain(); } IAEItemStack getLow(final FuzzyMode fuzzy, final boolean ignoreMeta) { final AEItemStack bottom = new AEItemStack(this); final AEItemDef newDef = bottom.setDefinition(bottom.getDefinition().copy()); if (ignoreMeta) { newDef.setDisplayDamage(newDef.setDamageValue(0)); newDef.reHash(); return bottom; } if (newDef.getItem().isDamageable()) { if (fuzzy == FuzzyMode.IGNORE_ALL) { newDef.setDisplayDamage(0); } else if (fuzzy == FuzzyMode.PERCENT_99) { if (this.getDefinition().getDamageValue() == 0) { newDef.setDisplayDamage(0); } else { newDef.setDisplayDamage(1); } } else { final int breakpoint = fuzzy.calculateBreakPoint(this.getDefinition().getMaxDamage()); newDef.setDisplayDamage(breakpoint <= this.getDefinition().getDisplayDamage() ? breakpoint : 0); } newDef.setDamageValue(newDef.getDisplayDamage()); } newDef.setTagCompound(AEItemDef.LOW_TAG); newDef.reHash(); return bottom; } IAEItemStack getHigh(final FuzzyMode fuzzy, final boolean ignoreMeta) { final AEItemStack top = new AEItemStack(this); final AEItemDef newDef = top.setDefinition(top.getDefinition().copy()); if (ignoreMeta) { newDef.setDisplayDamage(newDef.setDamageValue(Integer.MAX_VALUE)); newDef.reHash(); return top; } if (newDef.getItem().isDamageable()) { if (fuzzy == FuzzyMode.IGNORE_ALL) { newDef.setDisplayDamage(this.getDefinition().getMaxDamage() + 1); } else if (fuzzy == FuzzyMode.PERCENT_99) { if (this.getDefinition().getDamageValue() == 0) { newDef.setDisplayDamage(0); } else { newDef.setDisplayDamage(this.getDefinition().getMaxDamage() + 1); } } else { final int breakpoint = fuzzy.calculateBreakPoint(this.getDefinition().getMaxDamage()); newDef.setDisplayDamage(this.getDefinition().getDisplayDamage() < breakpoint ? breakpoint - 1 : this.getDefinition().getMaxDamage() + 1); } newDef.setDamageValue(newDef.getDisplayDamage()); } newDef.setTagCompound(AEItemDef.HIGH_TAG); newDef.reHash(); return top; } public boolean isOre() { return this.getDefinition().getIsOre() != null; } @Override void writeIdentity(final ByteBuf i) throws IOException { i.writeShort(Item.REGISTRY.getIDForObject(this.getDefinition().getItem())); i.writeShort(this.getItemDamage()); } @Override void readNBT(final ByteBuf i) throws IOException { if (this.hasTagCompound()) { final ByteArrayOutputStream bytes = new ByteArrayOutputStream(); final DataOutputStream data = new DataOutputStream(bytes); CompressedStreamTools.write((NBTTagCompound) this.getTagCompound(), data); final byte[] tagBytes = bytes.toByteArray(); final int size = tagBytes.length; i.writeInt(size); i.writeBytes(tagBytes); } } @Override public boolean hasTagCompound() { return this.getDefinition().getTagCompound() != null; } AEItemDef getDefinition() { return this.def; } private AEItemDef setDefinition(final AEItemDef def) { this.def = def; return def; } }