package net.minecraft.entity.item;
import java.util.Iterator;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.Event.Result;
import net.minecraftforge.event.entity.item.ItemExpireEvent;
import net.minecraftforge.event.entity.player.EntityItemPickupEvent;
import cpw.mods.fml.common.registry.GameRegistry;
import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.stats.AchievementList;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.StatCollector;
import net.minecraft.world.World;
public class EntityItem extends Entity
{
/**
* The age of this EntityItem (used to animate it up and down as well as expire it)
*/
public int age;
public int delayBeforeCanPickup;
/** The health of this EntityItem. (For example, damage for tools) */
private int health;
/** The EntityItem's random initial float height. */
public float hoverStart;
/**
* The maximum age of this EntityItem. The item is expired once this is reached.
*/
public int lifespan = 6000;
public EntityItem(World par1World, double par2, double par4, double par6)
{
super(par1World);
this.age = 0;
this.health = 5;
this.hoverStart = (float)(Math.random() * Math.PI * 2.0D);
this.setSize(0.25F, 0.25F);
this.yOffset = this.height / 2.0F;
this.setPosition(par2, par4, par6);
this.rotationYaw = (float)(Math.random() * 360.0D);
this.motionX = (double)((float)(Math.random() * 0.20000000298023224D - 0.10000000149011612D));
this.motionY = 0.20000000298023224D;
this.motionZ = (double)((float)(Math.random() * 0.20000000298023224D - 0.10000000149011612D));
}
public EntityItem(World par1World, double par2, double par4, double par6, ItemStack par8ItemStack)
{
this(par1World, par2, par4, par6);
this.setEntityItemStack(par8ItemStack);
this.lifespan = (par8ItemStack.getItem() == null ? 6000 : par8ItemStack.getItem().getEntityLifespan(par8ItemStack, par1World));
}
/**
* returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
* prevent them from trampling crops
*/
protected boolean canTriggerWalking()
{
return false;
}
public EntityItem(World par1World)
{
super(par1World);
this.age = 0;
this.health = 5;
this.hoverStart = (float)(Math.random() * Math.PI * 2.0D);
this.setSize(0.25F, 0.25F);
this.yOffset = this.height / 2.0F;
}
protected void entityInit()
{
this.getDataWatcher().addObjectByDataType(10, 5);
}
/**
* Called to update the entity's position/logic.
*/
public void onUpdate()
{
ItemStack stack = this.getDataWatcher().getWatchableObjectItemStack(10);
if (stack != null && stack.getItem() != null)
{
if (stack.getItem().onEntityItemUpdate(this))
{
return;
}
}
super.onUpdate();
if (this.delayBeforeCanPickup > 0)
{
--this.delayBeforeCanPickup;
}
this.prevPosX = this.posX;
this.prevPosY = this.posY;
this.prevPosZ = this.posZ;
this.motionY -= 0.03999999910593033D;
this.noClip = this.pushOutOfBlocks(this.posX, (this.boundingBox.minY + this.boundingBox.maxY) / 2.0D, this.posZ);
this.moveEntity(this.motionX, this.motionY, this.motionZ);
boolean flag = (int)this.prevPosX != (int)this.posX || (int)this.prevPosY != (int)this.posY || (int)this.prevPosZ != (int)this.posZ;
if (flag || this.ticksExisted % 25 == 0)
{
if (this.worldObj.getBlockMaterial(MathHelper.floor_double(this.posX), MathHelper.floor_double(this.posY), MathHelper.floor_double(this.posZ)) == Material.lava)
{
this.motionY = 0.20000000298023224D;
this.motionX = (double)((this.rand.nextFloat() - this.rand.nextFloat()) * 0.2F);
this.motionZ = (double)((this.rand.nextFloat() - this.rand.nextFloat()) * 0.2F);
this.playSound("random.fizz", 0.4F, 2.0F + this.rand.nextFloat() * 0.4F);
}
if (!this.worldObj.isRemote)
{
this.searchForOtherItemsNearby();
}
}
float f = 0.98F;
if (this.onGround)
{
f = 0.58800006F;
int i = this.worldObj.getBlockId(MathHelper.floor_double(this.posX), MathHelper.floor_double(this.boundingBox.minY) - 1, MathHelper.floor_double(this.posZ));
if (i > 0)
{
f = Block.blocksList[i].slipperiness * 0.98F;
}
}
this.motionX *= (double)f;
this.motionY *= 0.9800000190734863D;
this.motionZ *= (double)f;
if (this.onGround)
{
this.motionY *= -0.5D;
}
++this.age;
ItemStack item = getDataWatcher().getWatchableObjectItemStack(10);
if (!this.worldObj.isRemote && this.age >= lifespan)
{
if (item != null)
{
ItemExpireEvent event = new ItemExpireEvent(this, (item.getItem() == null ? 6000 : item.getItem().getEntityLifespan(item, worldObj)));
if (MinecraftForge.EVENT_BUS.post(event))
{
lifespan += event.extraLife;
}
else
{
this.setDead();
}
}
else
{
this.setDead();
}
}
if (item != null && item.stackSize <= 0)
{
this.setDead();
}
}
/**
* Looks for other itemstacks nearby and tries to stack them together
*/
private void searchForOtherItemsNearby()
{
Iterator iterator = this.worldObj.getEntitiesWithinAABB(EntityItem.class, this.boundingBox.expand(0.5D, 0.0D, 0.5D)).iterator();
while (iterator.hasNext())
{
EntityItem entityitem = (EntityItem)iterator.next();
this.combineItems(entityitem);
}
}
/**
* Tries to merge this item with the item passed as the parameter. Returns true if successful. Either this item or
* the other item will be removed from the world.
*/
public boolean combineItems(EntityItem par1EntityItem)
{
if (par1EntityItem == this)
{
return false;
}
else if (par1EntityItem.isEntityAlive() && this.isEntityAlive())
{
ItemStack itemstack = this.getEntityItem();
ItemStack itemstack1 = par1EntityItem.getEntityItem();
if (itemstack1.getItem() != itemstack.getItem())
{
return false;
}
else if (itemstack1.hasTagCompound() ^ itemstack.hasTagCompound())
{
return false;
}
else if (itemstack1.hasTagCompound() && !itemstack1.getTagCompound().equals(itemstack.getTagCompound()))
{
return false;
}
else if (itemstack1.getItem().getHasSubtypes() && itemstack1.getItemDamage() != itemstack.getItemDamage())
{
return false;
}
else if (itemstack1.stackSize < itemstack.stackSize)
{
return par1EntityItem.combineItems(this);
}
else if (itemstack1.stackSize + itemstack.stackSize > itemstack1.getMaxStackSize())
{
return false;
}
else
{
itemstack1.stackSize += itemstack.stackSize;
par1EntityItem.delayBeforeCanPickup = Math.max(par1EntityItem.delayBeforeCanPickup, this.delayBeforeCanPickup);
par1EntityItem.age = Math.min(par1EntityItem.age, this.age);
par1EntityItem.setEntityItemStack(itemstack1);
this.setDead();
return true;
}
}
else
{
return false;
}
}
/**
* sets the age of the item so that it'll despawn one minute after it has been dropped (instead of five). Used when
* items are dropped from players in creative mode
*/
public void setAgeToCreativeDespawnTime()
{
this.age = 4800;
}
/**
* Returns if this entity is in water and will end up adding the waters velocity to the entity
*/
public boolean handleWaterMovement()
{
return this.worldObj.handleMaterialAcceleration(this.boundingBox, Material.water, this);
}
/**
* Will deal the specified amount of damage to the entity if the entity isn't immune to fire damage. Args:
* amountDamage
*/
protected void dealFireDamage(int par1)
{
this.attackEntityFrom(DamageSource.inFire, par1);
}
/**
* Called when the entity is attacked.
*/
public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
{
if (this.isEntityInvulnerable())
{
return false;
}
else if (this.getEntityItem() != null && this.getEntityItem().itemID == Item.netherStar.itemID && par1DamageSource.isExplosion())
{
return false;
}
else
{
this.setBeenAttacked();
this.health -= par2;
if (this.health <= 0)
{
this.setDead();
}
return false;
}
}
/**
* (abstract) Protected helper method to write subclass entity data to NBT.
*/
public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
{
par1NBTTagCompound.setShort("Health", (short)((byte)this.health));
par1NBTTagCompound.setShort("Age", (short)this.age);
par1NBTTagCompound.setInteger("Lifespan", lifespan);
if (this.getEntityItem() != null)
{
par1NBTTagCompound.setCompoundTag("Item", this.getEntityItem().writeToNBT(new NBTTagCompound()));
}
}
/**
* (abstract) Protected helper method to read subclass entity data from NBT.
*/
public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
{
this.health = par1NBTTagCompound.getShort("Health") & 255;
this.age = par1NBTTagCompound.getShort("Age");
NBTTagCompound nbttagcompound1 = par1NBTTagCompound.getCompoundTag("Item");
this.setEntityItemStack(ItemStack.loadItemStackFromNBT(nbttagcompound1));
ItemStack item = getDataWatcher().getWatchableObjectItemStack(10);
if (item == null || item.stackSize <= 0)
{
this.setDead();
}
if (par1NBTTagCompound.hasKey("Lifespan"))
{
lifespan = par1NBTTagCompound.getInteger("Lifespan");
}
}
/**
* Called by a player entity when they collide with an entity
*/
public void onCollideWithPlayer(EntityPlayer par1EntityPlayer)
{
if (!this.worldObj.isRemote)
{
if (this.delayBeforeCanPickup > 0)
{
return;
}
EntityItemPickupEvent event = new EntityItemPickupEvent(par1EntityPlayer, this);
if (MinecraftForge.EVENT_BUS.post(event))
{
return;
}
ItemStack itemstack = this.getEntityItem();
int i = itemstack.stackSize;
if (this.delayBeforeCanPickup <= 0 && (event.getResult() == Result.ALLOW || i <= 0 || par1EntityPlayer.inventory.addItemStackToInventory(itemstack)))
{
if (itemstack.itemID == Block.wood.blockID)
{
par1EntityPlayer.triggerAchievement(AchievementList.mineWood);
}
if (itemstack.itemID == Item.leather.itemID)
{
par1EntityPlayer.triggerAchievement(AchievementList.killCow);
}
if (itemstack.itemID == Item.diamond.itemID)
{
par1EntityPlayer.triggerAchievement(AchievementList.diamonds);
}
if (itemstack.itemID == Item.blazeRod.itemID)
{
par1EntityPlayer.triggerAchievement(AchievementList.blazeRod);
}
GameRegistry.onPickupNotification(par1EntityPlayer, this);
this.playSound("random.pop", 0.2F, ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.0F) * 2.0F);
par1EntityPlayer.onItemPickup(this, i);
if (itemstack.stackSize <= 0)
{
this.setDead();
}
}
}
}
/**
* Gets the username of the entity.
*/
public String getEntityName()
{
return StatCollector.translateToLocal("item." + this.getEntityItem().getItemName());
}
/**
* If returns false, the item will not inflict any damage against entities.
*/
public boolean canAttackWithItem()
{
return false;
}
/**
* Teleports the entity to another dimension. Params: Dimension number to teleport to
*/
public void travelToDimension(int par1)
{
super.travelToDimension(par1);
if (!this.worldObj.isRemote)
{
this.searchForOtherItemsNearby();
}
}
/**
* Returns the ItemStack corresponding to the Entity (Note: if no item exists, will log an error but still return an
* ItemStack containing Block.stone)
*/
public ItemStack getEntityItem()
{
ItemStack itemstack = this.getDataWatcher().getWatchableObjectItemStack(10);
if (itemstack == null)
{
if (this.worldObj != null)
{
this.worldObj.getWorldLogAgent().logSevere("Item entity " + this.entityId + " has no item?!");
}
return new ItemStack(Block.stone);
}
else
{
return itemstack;
}
}
/**
* Sets the ItemStack for this entity
*/
public void setEntityItemStack(ItemStack par1ItemStack)
{
this.getDataWatcher().updateObject(10, par1ItemStack);
this.getDataWatcher().setObjectWatched(10);
}
}