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.creativetab.CreativeTabs;
008import net.minecraft.entity.player.EntityPlayer;
009import net.minecraft.item.Item;
010import net.minecraft.item.ItemStack;
011import net.minecraft.stats.StatList;
012import net.minecraft.util.AxisAlignedBB;
013import net.minecraft.world.EnumSkyBlock;
014import net.minecraft.world.IBlockAccess;
015import net.minecraft.world.World;
016
017public class BlockSnow extends Block
018{
019    protected BlockSnow(int par1, int par2)
020    {
021        super(par1, par2, Material.snow);
022        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.125F, 1.0F);
023        this.setTickRandomly(true);
024        this.setCreativeTab(CreativeTabs.tabDecorations);
025    }
026
027    /**
028     * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
029     * cleared to be reused)
030     */
031    public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
032    {
033        int var5 = par1World.getBlockMetadata(par2, par3, par4) & 7;
034        return var5 >= 3 ? AxisAlignedBB.getAABBPool().addOrModifyAABBInPool((double)par2 + this.minX, (double)par3 + this.minY, (double)par4 + this.minZ, (double)par2 + this.maxX, (double)((float)par3 + 0.5F), (double)par4 + this.maxZ) : null;
035    }
036
037    /**
038     * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
039     * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
040     */
041    public boolean isOpaqueCube()
042    {
043        return false;
044    }
045
046    /**
047     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
048     */
049    public boolean renderAsNormalBlock()
050    {
051        return false;
052    }
053
054    /**
055     * Updates the blocks bounds based on its current state. Args: world, x, y, z
056     */
057    public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
058    {
059        int var5 = par1IBlockAccess.getBlockMetadata(par2, par3, par4) & 7;
060        float var6 = (float)(2 * (1 + var5)) / 16.0F;
061        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, var6, 1.0F);
062    }
063
064    /**
065     * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
066     */
067    public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
068    {
069        int var5 = par1World.getBlockId(par2, par3 - 1, par4);
070        Block block = Block.blocksList[var5];
071        return block != null && (block.isLeaves(par1World, par2, par3 - 1, par4) || Block.blocksList[var5].isOpaqueCube()) ? par1World.getBlockMaterial(par2, par3 - 1, par4).blocksMovement() : false;
072    }
073
074    /**
075     * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
076     * their own) Args: x, y, z, neighbor blockID
077     */
078    public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
079    {
080        this.canSnowStay(par1World, par2, par3, par4);
081    }
082
083    /**
084     * Checks if this snow block can stay at this location.
085     */
086    private boolean canSnowStay(World par1World, int par2, int par3, int par4)
087    {
088        if (!this.canPlaceBlockAt(par1World, par2, par3, par4))
089        {
090            par1World.setBlockWithNotify(par2, par3, par4, 0);
091            return false;
092        }
093        else
094        {
095            return true;
096        }
097    }
098
099    /**
100     * Called when the player destroys a block with an item that can harvest it. (i, j, k) are the coordinates of the
101     * block and l is the block's subtype/damage.
102     */
103    public void harvestBlock(World par1World, EntityPlayer par2EntityPlayer, int par3, int par4, int par5, int par6)
104    {
105        super.harvestBlock(par1World, par2EntityPlayer, par3, par4, par5, par6);
106        par1World.setBlockWithNotify(par3, par4, par5, 0);
107    }
108
109    /**
110     * Returns the ID of the items to drop on destruction.
111     */
112    public int idDropped(int par1, Random par2Random, int par3)
113    {
114        return Item.snowball.itemID;
115    }
116
117    /**
118     * Returns the quantity of items to drop on block destruction.
119     */
120    public int quantityDropped(Random par1Random)
121    {
122        return 1;
123    }
124
125    /**
126     * Ticks the block if it's been scheduled
127     */
128    public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random)
129    {
130        if (par1World.getSavedLightValue(EnumSkyBlock.Block, par2, par3, par4) > 11)
131        {
132            par1World.setBlockWithNotify(par2, par3, par4, 0);
133        }
134    }
135
136    @SideOnly(Side.CLIENT)
137
138    /**
139     * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given
140     * coordinates.  Args: blockAccess, x, y, z, side
141     */
142    public boolean shouldSideBeRendered(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5)
143    {
144        return par5 == 1 ? true : super.shouldSideBeRendered(par1IBlockAccess, par2, par3, par4, par5);
145    }
146}