package net.minecraftforge.common;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import cpw.mods.fml.common.eventhandler.Event;
import cpw.mods.fml.relauncher.ReflectionHelper;
import net.minecraft.block.Block;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.ContainerRepair;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.Item;
import net.minecraft.item.ItemArmor;
import net.minecraft.item.ItemAxe;
import net.minecraft.item.ItemBucket;
import net.minecraft.item.ItemPickaxe;
import net.minecraft.item.ItemSpade;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.NetHandlerPlayServer;
import net.minecraft.network.Packet;
import net.minecraft.network.play.server.S23PacketBlockChange;
import net.minecraft.stats.StatList;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityNote;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.ChatComponentTranslation;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.MovingObjectPosition.MovingObjectType;
import net.minecraft.util.WeightedRandom;
import net.minecraft.world.World;
import net.minecraft.world.WorldSettings.GameType;
import net.minecraftforge.event.AnvilUpdateEvent;
import net.minecraftforge.event.ForgeEventFactory;
import net.minecraftforge.event.ServerChatEvent;
import net.minecraftforge.event.entity.item.ItemTossEvent;
import net.minecraftforge.event.entity.living.LivingAttackEvent;
import net.minecraftforge.event.entity.living.LivingDeathEvent;
import net.minecraftforge.event.entity.living.LivingDropsEvent;
import net.minecraftforge.event.entity.living.LivingEvent.LivingJumpEvent;
import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;
import net.minecraftforge.event.entity.living.LivingFallEvent;
import net.minecraftforge.event.entity.living.LivingHurtEvent;
import net.minecraftforge.event.entity.living.LivingSetAttackTargetEvent;
import net.minecraftforge.event.entity.player.PlayerOpenContainerEvent;
import net.minecraftforge.event.entity.player.AnvilRepairEvent;
import net.minecraftforge.event.world.BlockEvent;
import net.minecraftforge.event.world.NoteBlockEvent;
import static net.minecraft.init.Blocks.*;
public class ForgeHooks
{
static class SeedEntry extends WeightedRandom.Item
{
public final ItemStack seed;
public SeedEntry(ItemStack seed, int weight)
{
super(weight);
this.seed = seed;
}
}
static final List<SeedEntry> seedList = new ArrayList<SeedEntry>();
public static ItemStack getGrassSeed(World world)
{
SeedEntry entry = (SeedEntry)WeightedRandom.getRandomItem(world.rand, seedList);
if (entry == null || entry.seed == null)
{
return null;
}
return entry.seed.copy();
}
private static boolean toolInit = false;
//static HashSet<List> toolEffectiveness = new HashSet<List>();
public static boolean canHarvestBlock(Block block, EntityPlayer player, int metadata)
{
if (block.getMaterial().isToolNotRequired())
{
return true;
}
ItemStack stack = player.inventory.getCurrentItem();
String tool = block.getHarvestTool(metadata);
if (stack == null || tool == null)
{
return player.canHarvestBlock(block);
}
int toolLevel = stack.getItem().getHarvestLevel(stack, tool);
if (toolLevel < 0)
{
return player.canHarvestBlock(block);
}
return toolLevel >= block.getHarvestLevel(metadata);
}
public static boolean canToolHarvestBlock(Block block, int metadata, ItemStack stack)
{
String tool = block.getHarvestTool(metadata);
if (stack == null || tool == null) return false;
return stack.getItem().getHarvestLevel(stack, tool) >= block.getHarvestLevel(metadata);
}
public static float blockStrength(Block block, EntityPlayer player, World world, int x, int y, int z)
{
int metadata = world.getBlockMetadata(x, y, z);
float hardness = block.getBlockHardness(world, x, y, z);
if (hardness < 0.0F)
{
return 0.0F;
}
if (!canHarvestBlock(block, player, metadata))
{
return player.getBreakSpeed(block, true, metadata, x, y, z) / hardness / 100F;
}
else
{
return player.getBreakSpeed(block, false, metadata, x, y, z) / hardness / 30F;
}
}
public static boolean isToolEffective(ItemStack stack, Block block, int metadata)
{
for (String type : stack.getItem().getToolClasses(stack))
{
if (block.isToolEffective(type, metadata))
return true;
}
return false;
}
static void initTools()
{
if (toolInit)
{
return;
}
toolInit = true;
Set<Block> blocks = ReflectionHelper.getPrivateValue(ItemPickaxe.class, null, 0);
for (Block block : blocks)
{
block.setHarvestLevel("pickaxe", 0);
}
blocks = ReflectionHelper.getPrivateValue(ItemSpade.class, null, 0);
for (Block block : blocks)
{
block.setHarvestLevel("shovel", 0);
}
blocks = ReflectionHelper.getPrivateValue(ItemAxe.class, null, 0);
for (Block block : blocks)
{
block.setHarvestLevel("axe", 0);
}
Blocks.obsidian.setHarvestLevel("pickaxe", 3);
for (Block block : new Block[]{emerald_ore, emerald_block, diamond_ore, diamond_block, gold_ore, gold_block, redstone_ore, lit_redstone_ore})
{
block.setHarvestLevel("pickaxe", 2);
}
Blocks.iron_ore.setHarvestLevel("pickaxe", 1);
Blocks.iron_block.setHarvestLevel("pickaxe", 1);
Blocks.lapis_ore.setHarvestLevel("pickaxe", 1);
Blocks.lapis_block.setHarvestLevel("pickaxe", 1);
}
public static int getTotalArmorValue(EntityPlayer player)
{
int ret = 0;
for (int x = 0; x < player.inventory.armorInventory.length; x++)
{
ItemStack stack = player.inventory.armorInventory[x];
if (stack != null && stack.getItem() instanceof ISpecialArmor)
{
ret += ((ISpecialArmor)stack.getItem()).getArmorDisplay(player, stack, x);
}
else if (stack != null && stack.getItem() instanceof ItemArmor)
{
ret += ((ItemArmor)stack.getItem()).damageReduceAmount;
}
}
return ret;
}
static
{
seedList.add(new SeedEntry(new ItemStack(Items.wheat_seeds), 10));
initTools();
}
/**
* Called when a player uses 'pick block', calls new Entity and Block hooks.
*/
public static boolean onPickBlock(MovingObjectPosition target, EntityPlayer player, World world)
{
ItemStack result = null;
boolean isCreative = player.capabilities.isCreativeMode;
if (target.typeOfHit == MovingObjectType.BLOCK)
{
int x = target.blockX;
int y = target.blockY;
int z = target.blockZ;
Block block = world.getBlock(x, y, z);
if (block.isAir(world, x, y, z))
{
return false;
}
result = block.getPickBlock(target, world, x, y, z, player);
}
else
{
if (target.typeOfHit != MovingObjectType.ENTITY || target.entityHit == null || !isCreative)
{
return false;
}
result = target.entityHit.getPickedResult(target);
}
if (result == null)
{
return false;
}
for (int x = 0; x < 9; x++)
{
ItemStack stack = player.inventory.getStackInSlot(x);
if (stack != null && stack.isItemEqual(result) && ItemStack.areItemStackTagsEqual(stack, result))
{
player.inventory.currentItem = x;
return true;
}
}
if (!isCreative)
{
return false;
}
int slot = player.inventory.getFirstEmptyStack();
if (slot < 0 || slot >= 9)
{
slot = player.inventory.currentItem;
}
player.inventory.setInventorySlotContents(slot, result);
player.inventory.currentItem = slot;
return true;
}
//Optifine Helper Functions u.u, these are here specifically for Optifine
//Note: When using Optfine, these methods are invoked using reflection, which
//incurs a major performance penalty.
public static void onLivingSetAttackTarget(EntityLivingBase entity, EntityLivingBase target)
{
MinecraftForge.EVENT_BUS.post(new LivingSetAttackTargetEvent(entity, target));
}
public static boolean onLivingUpdate(EntityLivingBase entity)
{
return MinecraftForge.EVENT_BUS.post(new LivingUpdateEvent(entity));
}
public static boolean onLivingAttack(EntityLivingBase entity, DamageSource src, float amount)
{
return MinecraftForge.EVENT_BUS.post(new LivingAttackEvent(entity, src, amount));
}
public static float onLivingHurt(EntityLivingBase entity, DamageSource src, float amount)
{
LivingHurtEvent event = new LivingHurtEvent(entity, src, amount);
return (MinecraftForge.EVENT_BUS.post(event) ? 0 : event.ammount);
}
public static boolean onLivingDeath(EntityLivingBase entity, DamageSource src)
{
return MinecraftForge.EVENT_BUS.post(new LivingDeathEvent(entity, src));
}
public static boolean onLivingDrops(EntityLivingBase entity, DamageSource source, ArrayList<EntityItem> drops, int lootingLevel, boolean recentlyHit, int specialDropValue)
{
return MinecraftForge.EVENT_BUS.post(new LivingDropsEvent(entity, source, drops, lootingLevel, recentlyHit, specialDropValue));
}
public static float onLivingFall(EntityLivingBase entity, float distance)
{
LivingFallEvent event = new LivingFallEvent(entity, distance);
return (MinecraftForge.EVENT_BUS.post(event) ? 0.0f : event.distance);
}
public static boolean isLivingOnLadder(Block block, World world, int x, int y, int z, EntityLivingBase entity)
{
if (!ForgeModContainer.fullBoundingBoxLadders)
{
return block != null && block.isLadder(world, x, y, z, entity);
}
else
{
AxisAlignedBB bb = entity.boundingBox;
int mX = MathHelper.floor_double(bb.minX);
int mY = MathHelper.floor_double(bb.minY);
int mZ = MathHelper.floor_double(bb.minZ);
for (int y2 = mY; y2 < bb.maxY; y2++)
{
for (int x2 = mX; x2 < bb.maxX; x2++)
{
for (int z2 = mZ; z2 < bb.maxZ; z2++)
{
block = world.getBlock(x2, y2, z2);
if (block != null && block.isLadder(world, x2, y2, z2, entity))
{
return true;
}
}
}
}
return false;
}
}
public static void onLivingJump(EntityLivingBase entity)
{
MinecraftForge.EVENT_BUS.post(new LivingJumpEvent(entity));
}
public static EntityItem onPlayerTossEvent(EntityPlayer player, ItemStack item, boolean includeName)
{
player.captureDrops = true;
EntityItem ret = player.func_146097_a(item, false, includeName);
player.capturedDrops.clear();
player.captureDrops = false;
if (ret == null)
{
return null;
}
ItemTossEvent event = new ItemTossEvent(ret, player);
if (MinecraftForge.EVENT_BUS.post(event))
{
return null;
}
player.joinEntityItemWithWorld(event.entityItem);
return event.entityItem;
}
public static float getEnchantPower(World world, int x, int y, int z)
{
return world.getBlock(x, y, z).getEnchantPowerBonus(world, x, y, z);
}
public static ChatComponentTranslation onServerChatEvent(NetHandlerPlayServer net, String raw, ChatComponentTranslation comp)
{
ServerChatEvent event = new ServerChatEvent(net.playerEntity, raw, comp);
if (MinecraftForge.EVENT_BUS.post(event))
{
return null;
}
return event.component;
}
public static boolean canInteractWith(EntityPlayer player, Container openContainer)
{
PlayerOpenContainerEvent event = new PlayerOpenContainerEvent(player, openContainer);
MinecraftForge.EVENT_BUS.post(event);
return event.getResult() == Event.Result.DEFAULT ? event.canInteractWith : event.getResult() == Event.Result.ALLOW ? true : false;
}
public static BlockEvent.BreakEvent onBlockBreakEvent(World world, GameType gameType, EntityPlayerMP entityPlayer, int x, int y, int z)
{
// Logic from tryHarvestBlock for pre-canceling the event
boolean preCancelEvent = false;
if (gameType.isAdventure() && !entityPlayer.isCurrentToolAdventureModeExempt(x, y, z))
{
preCancelEvent = true;
}
else if (gameType.isCreative() && entityPlayer.getHeldItem() != null && entityPlayer.getHeldItem().getItem() instanceof ItemSword)
{
preCancelEvent = true;
}
// Tell client the block is gone immediately then process events
if (world.getTileEntity(x, y, z) == null)
{
S23PacketBlockChange packet = new S23PacketBlockChange(x, y, z, world);
packet.field_148883_d = Blocks.air;
packet.field_148884_e = 0;
entityPlayer.playerNetServerHandler.sendPacket(packet);
}
// Post the block break event
Block block = world.getBlock(x, y, z);
int blockMetadata = world.getBlockMetadata(x, y, z);
BlockEvent.BreakEvent event = new BlockEvent.BreakEvent(x, y, z, world, block, blockMetadata, entityPlayer);
event.setCanceled(preCancelEvent);
MinecraftForge.EVENT_BUS.post(event);
// Handle if the event is canceled
if (event.isCanceled())
{
// Let the client know the block still exists
entityPlayer.playerNetServerHandler.sendPacket(new S23PacketBlockChange(x, y, z, world));
// Update any tile entity data for this block
TileEntity tileentity = world.getTileEntity(x, y, z);
if (tileentity != null)
{
Packet pkt = tileentity.getDescriptionPacket();
if (pkt != null)
{
entityPlayer.playerNetServerHandler.sendPacket(pkt);
}
}
}
return event;
}
public static boolean onPlaceItemIntoWorld(ItemStack itemstack, EntityPlayer player, World world, int x, int y, int z, int side, float hitX, float hitY, float hitZ)
{
// handle all placement events here
int meta = itemstack.getItemDamage();
int size = itemstack.stackSize;
NBTTagCompound nbt = null;
if (itemstack.getTagCompound() != null)
{
nbt = (NBTTagCompound)itemstack.getTagCompound().copy();
}
if (!(itemstack.getItem() instanceof ItemBucket)) // if not bucket
{
world.captureBlockSnapshots = true;
}
boolean flag = itemstack.getItem().onItemUse(itemstack, player, world, x, y, z, side, hitX, hitY, hitZ);
world.captureBlockSnapshots = false;
if (flag)
{
// save new item data
int newMeta = itemstack.getItemDamage();
int newSize = itemstack.stackSize;
NBTTagCompound newNBT = null;
if (itemstack.getTagCompound() != null)
{
newNBT = (NBTTagCompound)itemstack.getTagCompound().copy();
}
net.minecraftforge.event.world.BlockEvent.PlaceEvent placeEvent = null;
List<net.minecraftforge.common.util.BlockSnapshot> blockSnapshots = (List<net.minecraftforge.common.util.BlockSnapshot>) world.capturedBlockSnapshots.clone();
world.capturedBlockSnapshots.clear();
// make sure to set pre-placement item data for event
itemstack.setItemDamage(meta);
itemstack.stackSize = size;
if (nbt != null)
{
itemstack.setTagCompound(nbt);
}
if (blockSnapshots.size() > 1)
{
placeEvent = ForgeEventFactory.onPlayerMultiBlockPlace(player, blockSnapshots, net.minecraftforge.common.util.ForgeDirection.getOrientation(side));
}
else if (blockSnapshots.size() == 1)
{
placeEvent = ForgeEventFactory.onPlayerBlockPlace(player, blockSnapshots.get(0), net.minecraftforge.common.util.ForgeDirection.getOrientation(side));
}
if (placeEvent != null && (placeEvent.isCanceled()))
{
flag = false; // cancel placement
// revert back all captured blocks
for (net.minecraftforge.common.util.BlockSnapshot blocksnapshot : blockSnapshots)
{
world.restoringBlockSnapshots = true;
blocksnapshot.restore(true, false);
world.restoringBlockSnapshots = false;
}
}
else
{
// Change the stack to its new content
itemstack.setItemDamage(newMeta);
itemstack.stackSize = newSize;
if (nbt != null)
{
itemstack.setTagCompound(newNBT);
}
for (net.minecraftforge.common.util.BlockSnapshot blocksnapshot : blockSnapshots)
{
int blockX = blocksnapshot.x;
int blockY = blocksnapshot.y;
int blockZ = blocksnapshot.z;
int metadata = world.getBlockMetadata(blockX, blockY, blockZ);
int updateFlag = blocksnapshot.flag;
Block oldBlock = blocksnapshot.replacedBlock;
Block newBlock = world.getBlock(blockX, blockY, blockZ);
if (newBlock != null && !(newBlock.hasTileEntity(metadata))) // Containers get placed automatically
{
newBlock.onBlockAdded(world, blockX, blockY, blockZ);
}
world.markAndNotifyBlock(blockX, blockY, blockZ, null, oldBlock, newBlock, updateFlag);
}
player.addStat(StatList.objectUseStats[Item.getIdFromItem(itemstack.getItem())], 1);
}
}
world.capturedBlockSnapshots.clear();
return flag;
}
public static boolean onAnvilChange(ContainerRepair container, ItemStack left, ItemStack right, IInventory outputSlot, String name, int baseCost)
{
AnvilUpdateEvent e = new AnvilUpdateEvent(left, right, name, baseCost);
if (MinecraftForge.EVENT_BUS.post(e)) return false;
if (e.output == null) return true;
outputSlot.setInventorySlotContents(0, e.output);
container.maximumCost = e.cost;
container.stackSizeToBeUsedInRepair = e.materialCost;
return false;
}
public static float onAnvilRepair(EntityPlayer player, ItemStack output, ItemStack left, ItemStack right)
{
AnvilRepairEvent e = new AnvilRepairEvent(player, left, right, output);
MinecraftForge.EVENT_BUS.post(e);
return e.breakChance;
}
public static boolean onNoteChange(TileEntityNote te, byte old)
{
NoteBlockEvent.Change e = new NoteBlockEvent.Change(te.getWorldObj(), te.xCoord, te.yCoord, te.zCoord, te.getBlockMetadata(), old, te.note);
if (MinecraftForge.EVENT_BUS.post(e))
{
te.note = old;
return false;
}
te.note = (byte)e.getVanillaNoteId();
return true;
}
}