ItemSnow.java

package net.minecraft.item;

import net.minecraft.block.Block;
import net.minecraft.block.BlockSnow;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.BlockPos;
import net.minecraft.util.EnumFacing;
import net.minecraft.world.World;

public class ItemSnow extends ItemBlock
{
    private static final String __OBFID = "CL_00000068";

    public ItemSnow(Block p_i45781_1_)
    {
        super(p_i45781_1_);
        this.setMaxDamage(0);
        this.setHasSubtypes(true);
    }

    /**
     * Called when a Block is right-clicked with this Item
     *  
     * @param pos The block being right-clicked
     * @param side The side being right-clicked
     */
    public boolean onItemUse(ItemStack stack, EntityPlayer playerIn, World worldIn, BlockPos pos, EnumFacing side, float hitX, float hitY, float hitZ)
    {
        if (stack.stackSize == 0)
        {
            return false;
        }
        else if (!playerIn.func_175151_a(pos, side, stack))
        {
            return false;
        }
        else
        {
            IBlockState var9 = worldIn.getBlockState(pos);
            Block var10 = var9.getBlock();

            if (var10 != this.block && side != EnumFacing.UP)
            {
                pos = pos.offset(side);
                var9 = worldIn.getBlockState(pos);
                var10 = var9.getBlock();
            }

            if (var10 == this.block)
            {
                int var11 = ((Integer)var9.getValue(BlockSnow.LAYERS_PROP)).intValue();

                if (var11 <= 7)
                {
                    IBlockState var12 = var9.withProperty(BlockSnow.LAYERS_PROP, Integer.valueOf(var11 + 1));

                    if (worldIn.checkNoEntityCollision(this.block.getCollisionBoundingBox(worldIn, pos, var12)) && worldIn.setBlockState(pos, var12, 2))
                    {
                        worldIn.playSoundEffect((double)((float)pos.getX() + 0.5F), (double)((float)pos.getY() + 0.5F), (double)((float)pos.getZ() + 0.5F), this.block.stepSound.getPlaceSound(), (this.block.stepSound.getVolume() + 1.0F) / 2.0F, this.block.stepSound.getFrequency() * 0.8F);
                        --stack.stackSize;
                        return true;
                    }
                }
            }

            return super.onItemUse(stack, playerIn, worldIn, pos, side, hitX, hitY, hitZ);
        }
    }

    /**
     * Converts the given ItemStack damage value into a metadata value to be placed in the world when this Item is
     * placed as a Block (mostly used with ItemBlocks).
     */
    public int getMetadata(int damage)
    {
        return damage;
    }
}