    001package net.minecraft.block;
    002
    003import cpw.mods.fml.relauncher.Side;
    004import cpw.mods.fml.relauncher.SideOnly;
    005import java.util.Random;
    006import net.minecraft.block.material.Material;
    007import net.minecraft.client.renderer.texture.IconRegister;
    008import net.minecraft.creativetab.CreativeTabs;
    009import net.minecraft.entity.player.EntityPlayer;
    010import net.minecraft.item.Item;
    011import net.minecraft.item.ItemStack;
    012import net.minecraft.stats.StatList;
    013import net.minecraft.util.AxisAlignedBB;
    014import net.minecraft.world.EnumSkyBlock;
    015import net.minecraft.world.IBlockAccess;
    016import net.minecraft.world.World;
    017
    018public class BlockSnow extends Block
    019{
    020    protected BlockSnow(int par1)
    021    {
    022        super(par1, Material.snow);
    023        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.125F, 1.0F);
    024        this.setTickRandomly(true);
    025        this.setCreativeTab(CreativeTabs.tabDecorations);
    026        this.func_96478_d(0);
    027    }
    028
    029    @SideOnly(Side.CLIENT)
    030    public void func_94332_a(IconRegister par1IconRegister)
    031    {
    032        this.field_94336_cN = par1IconRegister.func_94245_a("snow");
    033    }
    034
    035    /**
    036     * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
    037     * cleared to be reused)
    038     */
    039    public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
    040    {
    041        int l = par1World.getBlockMetadata(par2, par3, par4) & 7;
    042        float f = 0.125F;
    043        return AxisAlignedBB.getAABBPool().getAABB((double)par2 + this.minX, (double)par3 + this.minY, (double)par4 + this.minZ, (double)par2 + this.maxX, (double)((float)par3 + (float)l * f), (double)par4 + this.maxZ);
    044    }
    045
    046    /**
    047     * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
    048     * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
    049     */
    050    public boolean isOpaqueCube()
    051    {
    052        return false;
    053    }
    054
    055    /**
    056     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
    057     */
    058    public boolean renderAsNormalBlock()
    059    {
    060        return false;
    061    }
    062
    063    /**
    064     * Sets the block's bounds for rendering it as an item
    065     */
    066    public void setBlockBoundsForItemRender()
    067    {
    068        this.func_96478_d(0);
    069    }
    070
    071    /**
    072     * Updates the blocks bounds based on its current state. Args: world, x, y, z
    073     */
    074    public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
    075    {
    076        this.func_96478_d(par1IBlockAccess.getBlockMetadata(par2, par3, par4));
    077    }
    078
    079    protected void func_96478_d(int par1)
    080    {
    081        int j = par1 & 7;
    082        float f = (float)(2 * (1 + j)) / 16.0F;
    083        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, f, 1.0F);
    084    }
    085
    086    /**
    087     * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
    088     */
    089    public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
    090    {
    091        int l = par1World.getBlockId(par2, par3 - 1, par4);
    092        Block block = Block.blocksList[l];
    093        if (block == null) return false;
    094        if (block == this && (par1World.getBlockMetadata(par2, par3 - 1, par4) & 7) == 7) return true;
    095        if (!block.isLeaves(par1World, par2, par3 - 1, par4) && !Block.blocksList[l].isOpaqueCube()) return false;
    096        return par1World.getBlockMaterial(par2, par3 - 1, par4).blocksMovement();
    097    }
    098
    099    /**
    100     * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
    101     * their own) Args: x, y, z, neighbor blockID
    102     */
    103    public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
    104    {
    105        this.canSnowStay(par1World, par2, par3, par4);
    106    }
    107
    108    /**
    109     * Checks if this snow block can stay at this location.
    110     */
    111    private boolean canSnowStay(World par1World, int par2, int par3, int par4)
    112    {
    113        if (!this.canPlaceBlockAt(par1World, par2, par3, par4))
    114        {
    115            par1World.func_94571_i(par2, par3, par4);
    116            return false;
    117        }
    118        else
    119        {
    120            return true;
    121        }
    122    }
    123
    124    /**
    125     * Called when the player destroys a block with an item that can harvest it. (i, j, k) are the coordinates of the
    126     * block and l is the block's subtype/damage.
    127     */
    128    public void harvestBlock(World par1World, EntityPlayer par2EntityPlayer, int par3, int par4, int par5, int par6)
    129    {
    130        super.harvestBlock(par1World, par2EntityPlayer, par3, par4, par5, par6);
    131        par1World.func_94571_i(par3, par4, par5);
    132    }
    133
    134    /**
    135     * Returns the ID of the items to drop on destruction.
    136     */
    137    public int idDropped(int par1, Random par2Random, int par3)
    138    {
    139        return Item.snowball.itemID;
    140    }
    141
    142    /**
    143     * Returns the quantity of items to drop on block destruction.
    144     */
    145    public int quantityDropped(Random par1Random)
    146    {
    147        return 1;
    148    }
    149
    150    /**
    151     * Ticks the block if it's been scheduled
    152     */
    153    public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random)
    154    {
    155        if (par1World.getSavedLightValue(EnumSkyBlock.Block, par2, par3, par4) > 11)
    156        {
    157            par1World.func_94571_i(par2, par3, par4);
    158        }
    159    }
    160
    161    @SideOnly(Side.CLIENT)
    162
    163    /**
    164     * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given
    165     * coordinates.  Args: blockAccess, x, y, z, side
    166     */
    167    public boolean shouldSideBeRendered(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5)
    168    {
    169        return par5 == 1 ? true : super.shouldSideBeRendered(par1IBlockAccess, par2, par3, par4, par5);
    170    }
    171
    172    @Override
    173    public int quantityDropped(int meta, int fortune, Random random)
    174    {
    175        return (meta & 7) + 1;
    176    }
    177}