    001package net.minecraft.item;
    002
    003import cpw.mods.fml.relauncher.Side;
    004import cpw.mods.fml.relauncher.SideOnly;
    005import net.minecraft.block.Block;
    006import net.minecraft.block.BlockHalfSlab;
    007import net.minecraft.entity.player.EntityPlayer;
    008import net.minecraft.util.Icon;
    009import net.minecraft.world.World;
    010
    011public class ItemSlab extends ItemBlock
    012{
    013    private final boolean isFullBlock;
    014
    015    /** Instance of BlockHalfSlab. */
    016    private final BlockHalfSlab theHalfSlab;
    017
    018    /** The double-slab block corresponding to this item. */
    019    private final BlockHalfSlab doubleSlab;
    020
    021    public ItemSlab(int par1, BlockHalfSlab par2BlockHalfSlab, BlockHalfSlab par3BlockHalfSlab, boolean par4)
    022    {
    023        super(par1);
    024        this.theHalfSlab = par2BlockHalfSlab;
    025        this.doubleSlab = par3BlockHalfSlab;
    026        this.isFullBlock = par4;
    027        this.setMaxDamage(0);
    028        this.setHasSubtypes(true);
    029    }
    030
    031    @SideOnly(Side.CLIENT)
    032
    033    /**
    034     * Gets an icon index based on an item's damage value
    035     */
    036    public Icon getIconFromDamage(int par1)
    037    {
    038        return Block.blocksList[this.itemID].getIcon(2, par1);
    039    }
    040
    041    /**
    042     * Returns the metadata of the block which this Item (ItemBlock) can place
    043     */
    044    public int getMetadata(int par1)
    045    {
    046        return par1;
    047    }
    048
    049    /**
    050     * Returns the unlocalized name of this item. This version accepts an ItemStack so different stacks can have
    051     * different names based on their damage or NBT.
    052     */
    053    public String getUnlocalizedName(ItemStack par1ItemStack)
    054    {
    055        return this.theHalfSlab.getFullSlabName(par1ItemStack.getItemDamage());
    056    }
    057
    058    /**
    059     * Callback for item usage. If the item does something special on right clicking, he will have one of those. Return
    060     * True if something happen and false if it don't. This is for ITEMS, not BLOCKS
    061     */
    062    public boolean onItemUse(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7, float par8, float par9, float par10)
    063    {
    064        if (this.isFullBlock)
    065        {
    066            return super.onItemUse(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7, par8, par9, par10);
    067        }
    068        else if (par1ItemStack.stackSize == 0)
    069        {
    070            return false;
    071        }
    072        else if (!par2EntityPlayer.canPlayerEdit(par4, par5, par6, par7, par1ItemStack))
    073        {
    074            return false;
    075        }
    076        else
    077        {
    078            int i1 = par3World.getBlockId(par4, par5, par6);
    079            int j1 = par3World.getBlockMetadata(par4, par5, par6);
    080            int k1 = j1 & 7;
    081            boolean flag = (j1 & 8) != 0;
    082
    083            if ((par7 == 1 && !flag || par7 == 0 && flag) && i1 == this.theHalfSlab.blockID && k1 == par1ItemStack.getItemDamage())
    084            {
    085                if (par3World.checkNoEntityCollision(this.doubleSlab.getCollisionBoundingBoxFromPool(par3World, par4, par5, par6)) && par3World.setBlock(par4, par5, par6, this.doubleSlab.blockID, k1, 3))
    086                {
    087                    par3World.playSoundEffect((double)((float)par4 + 0.5F), (double)((float)par5 + 0.5F), (double)((float)par6 + 0.5F), this.doubleSlab.stepSound.getPlaceSound(), (this.doubleSlab.stepSound.getVolume() + 1.0F) / 2.0F, this.doubleSlab.stepSound.getPitch() * 0.8F);
    088                    --par1ItemStack.stackSize;
    089                }
    090
    091                return true;
    092            }
    093            else
    094            {
    095                return this.func_77888_a(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7) ? true : super.onItemUse(par1ItemStack, par2EntityPlayer, par3World, par4, par5, par6, par7, par8, par9, par10);
    096            }
    097        }
    098    }
    099
    100    @SideOnly(Side.CLIENT)
    101
    102    /**
    103     * Returns true if the given ItemBlock can be placed on the given side of the given block position.
    104     */
    105    public boolean canPlaceItemBlockOnSide(World par1World, int par2, int par3, int par4, int par5, EntityPlayer par6EntityPlayer, ItemStack par7ItemStack)
    106    {
    107        int i1 = par2;
    108        int j1 = par3;
    109        int k1 = par4;
    110        int l1 = par1World.getBlockId(par2, par3, par4);
    111        int i2 = par1World.getBlockMetadata(par2, par3, par4);
    112        int j2 = i2 & 7;
    113        boolean flag = (i2 & 8) != 0;
    114
    115        if ((par5 == 1 && !flag || par5 == 0 && flag) && l1 == this.theHalfSlab.blockID && j2 == par7ItemStack.getItemDamage())
    116        {
    117            return true;
    118        }
    119        else
    120        {
    121            if (par5 == 0)
    122            {
    123                --par3;
    124            }
    125
    126            if (par5 == 1)
    127            {
    128                ++par3;
    129            }
    130
    131            if (par5 == 2)
    132            {
    133                --par4;
    134            }
    135
    136            if (par5 == 3)
    137            {
    138                ++par4;
    139            }
    140
    141            if (par5 == 4)
    142            {
    143                --par2;
    144            }
    145
    146            if (par5 == 5)
    147            {
    148                ++par2;
    149            }
    150
    151            l1 = par1World.getBlockId(par2, par3, par4);
    152            i2 = par1World.getBlockMetadata(par2, par3, par4);
    153            j2 = i2 & 7;
    154            flag = (i2 & 8) != 0;
    155            return l1 == this.theHalfSlab.blockID && j2 == par7ItemStack.getItemDamage() ? true : super.canPlaceItemBlockOnSide(par1World, i1, j1, k1, par5, par6EntityPlayer, par7ItemStack);
    156        }
    157    }
    158
    159    private boolean func_77888_a(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7)
    160    {
    161        if (par7 == 0)
    162        {
    163            --par5;
    164        }
    165
    166        if (par7 == 1)
    167        {
    168            ++par5;
    169        }
    170
    171        if (par7 == 2)
    172        {
    173            --par6;
    174        }
    175
    176        if (par7 == 3)
    177        {
    178            ++par6;
    179        }
    180
    181        if (par7 == 4)
    182        {
    183            --par4;
    184        }
    185
    186        if (par7 == 5)
    187        {
    188            ++par4;
    189        }
    190
    191        int i1 = par3World.getBlockId(par4, par5, par6);
    192        int j1 = par3World.getBlockMetadata(par4, par5, par6);
    193        int k1 = j1 & 7;
    194
    195        if (i1 == this.theHalfSlab.blockID && k1 == par1ItemStack.getItemDamage())
    196        {
    197            if (par3World.checkNoEntityCollision(this.doubleSlab.getCollisionBoundingBoxFromPool(par3World, par4, par5, par6)) && par3World.setBlock(par4, par5, par6, this.doubleSlab.blockID, k1, 3))
    198            {
    199                par3World.playSoundEffect((double)((float)par4 + 0.5F), (double)((float)par5 + 0.5F), (double)((float)par6 + 0.5F), this.doubleSlab.stepSound.getPlaceSound(), (this.doubleSlab.stepSound.getVolume() + 1.0F) / 2.0F, this.doubleSlab.stepSound.getPitch() * 0.8F);
    200                --par1ItemStack.stackSize;
    201            }
    202
    203            return true;
    204        }
    205        else
    206        {
    207            return false;
    208        }
    209    }
    210}