BlockSnow.java

package net.minecraft.block;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.util.Random;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.stats.StatList;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.world.EnumSkyBlock;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;

public class BlockSnow extends Block
{
    private static final String __OBFID = "CL_00000309";

    protected BlockSnow()
    {
        super(Material.snow);
        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.125F, 1.0F);
        this.setTickRandomly(true);
        this.setCreativeTab(CreativeTabs.tabDecorations);
        this.func_150154_b(0);
    }

    @SideOnly(Side.CLIENT)
    public void registerIcons(IIconRegister reg)
    {
        this.blockIcon = reg.registerIcon("snow");
    }

    /**
     * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
     * cleared to be reused)
     */
    public AxisAlignedBB getCollisionBoundingBoxFromPool(World worldIn, int x, int y, int z)
    {
        int l = worldIn.getBlockMetadata(x, y, z) & 7;
        float f = 0.125F;
        return AxisAlignedBB.getBoundingBox((double)x + this.minX, (double)y + this.minY, (double)z + this.minZ, (double)x + this.maxX, (double)((float)y + (float)l * f), (double)z + this.maxZ);
    }

    public boolean isOpaqueCube()
    {
        return false;
    }

    public boolean renderAsNormalBlock()
    {
        return false;
    }

    /**
     * Sets the block's bounds for rendering it as an item
     */
    public void setBlockBoundsForItemRender()
    {
        this.func_150154_b(0);
    }

    public void setBlockBoundsBasedOnState(IBlockAccess worldIn, int x, int y, int z)
    {
        this.func_150154_b(worldIn.getBlockMetadata(x, y, z));
    }

    protected void func_150154_b(int p_150154_1_)
    {
        int j = p_150154_1_ & 7;
        float f = (float)(2 * (1 + j)) / 16.0F;
        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, f, 1.0F);
    }

    public boolean canPlaceBlockAt(World worldIn, int x, int y, int z)
    {
        Block block = worldIn.getBlock(x, y - 1, z);
        return block != Blocks.ice && block != Blocks.packed_ice ? (block.isLeaves(worldIn, x, y - 1, z) ? true : (block == this && (worldIn.getBlockMetadata(x, y - 1, z) & 7) == 7 ? true : block.isOpaqueCube() && block.blockMaterial.blocksMovement())) : false;
    }

    public void onNeighborBlockChange(World worldIn, int x, int y, int z, Block neighbor)
    {
        this.func_150155_m(worldIn, x, y, z);
    }

    private boolean func_150155_m(World p_150155_1_, int p_150155_2_, int p_150155_3_, int p_150155_4_)
    {
        if (!this.canPlaceBlockAt(p_150155_1_, p_150155_2_, p_150155_3_, p_150155_4_))
        {
            p_150155_1_.setBlockToAir(p_150155_2_, p_150155_3_, p_150155_4_);
            return false;
        }
        else
        {
            return true;
        }
    }

    public void harvestBlock(World worldIn, EntityPlayer player, int x, int y, int z, int meta)
    {
        super.harvestBlock(worldIn, player, x, y, z, meta);
        worldIn.setBlockToAir(x, y, z);
    }

    public Item getItemDropped(int meta, Random random, int fortune)
    {
        return Items.snowball;
    }

    /**
     * Returns the quantity of items to drop on block destruction.
     */
    public int quantityDropped(Random random)
    {
        return 1;
    }

    /**
     * Ticks the block if it's been scheduled
     */
    public void updateTick(World worldIn, int x, int y, int z, Random random)
    {
        if (worldIn.getSavedLightValue(EnumSkyBlock.Block, x, y, z) > 11)
        {
            worldIn.setBlockToAir(x, y, z);
        }
    }

    /**
     * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given
     * coordinates.  Args: blockAccess, x, y, z, side
     */
    @SideOnly(Side.CLIENT)
    public boolean shouldSideBeRendered(IBlockAccess worldIn, int x, int y, int z, int side)
    {
        return side == 1 ? true : super.shouldSideBeRendered(worldIn, x, y, z, side);
    }

    /**
     * Metadata and fortune sensitive version, this replaces the old (int meta, Random rand)
     * version in 1.1.
     *
     * @param meta Blocks Metadata
     * @param fortune Current item fortune level
     * @param random Random number generator
     * @return The number of items to drop
     */
    public int quantityDropped(int meta, int fortune, Random random)
    {
        return (meta & 7) + 1;
    }

    /**
     * Determines if a new block can be replace the space occupied by this one,
     * Used in the player's placement code to make the block act like water, and lava.
     *
     * @param world The current world
     * @param x X Position
     * @param y Y position
     * @param z Z position
     * @return True if the block is replaceable by another block
     */
    public boolean isReplaceable(IBlockAccess world, int x, int y, int z)
    {
        int meta = world.getBlockMetadata(x, y, z);
        return meta >= 7 ? false : blockMaterial.isReplaceable();
    }
}