    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.entity.player.EntityPlayer;
    008import net.minecraft.tileentity.TileEntity;
    009import net.minecraft.tileentity.TileEntityPiston;
    010import net.minecraft.util.AxisAlignedBB;
    011import net.minecraft.util.Facing;
    012import net.minecraft.world.IBlockAccess;
    013import net.minecraft.world.World;
    014
    015public class BlockPistonMoving extends BlockContainer
    016{
    017    public BlockPistonMoving(int par1)
    018    {
    019        super(par1, Material.piston);
    020        this.setHardness(-1.0F);
    021    }
    022
    023    /**
    024     * Returns a new instance of a block's tile entity class. Called on placing the block.
    025     */
    026    public TileEntity createNewTileEntity(World par1World)
    027    {
    028        return null;
    029    }
    030
    031    /**
    032     * Called whenever the block is added into the world. Args: world, x, y, z
    033     */
    034    public void onBlockAdded(World par1World, int par2, int par3, int par4) {}
    035
    036    /**
    037     * ejects contained items into the world, and notifies neighbours of an update, as appropriate
    038     */
    039    public void breakBlock(World par1World, int par2, int par3, int par4, int par5, int par6)
    040    {
    041        TileEntity var7 = par1World.getBlockTileEntity(par2, par3, par4);
    042
    043        if (var7 instanceof TileEntityPiston)
    044        {
    045            ((TileEntityPiston)var7).clearPistonTileEntity();
    046        }
    047        else
    048        {
    049            super.breakBlock(par1World, par2, par3, par4, par5, par6);
    050        }
    051    }
    052
    053    /**
    054     * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
    055     */
    056    public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
    057    {
    058        return false;
    059    }
    060
    061    /**
    062     * checks to see if you can place this block can be placed on that side of a block: BlockLever overrides
    063     */
    064    public boolean canPlaceBlockOnSide(World par1World, int par2, int par3, int par4, int par5)
    065    {
    066        return false;
    067    }
    068
    069    /**
    070     * The type of render function that is called for this block
    071     */
    072    public int getRenderType()
    073    {
    074        return -1;
    075    }
    076
    077    /**
    078     * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
    079     * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
    080     */
    081    public boolean isOpaqueCube()
    082    {
    083        return false;
    084    }
    085
    086    /**
    087     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
    088     */
    089    public boolean renderAsNormalBlock()
    090    {
    091        return false;
    092    }
    093
    094    /**
    095     * Called upon block activation (right click on the block.)
    096     */
    097    public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9)
    098    {
    099        if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
    100        {
    101            par1World.setBlockWithNotify(par2, par3, par4, 0);
    102            return true;
    103        }
    104        else
    105        {
    106            return false;
    107        }
    108    }
    109
    110    /**
    111     * Returns the ID of the items to drop on destruction.
    112     */
    113    public int idDropped(int par1, Random par2Random, int par3)
    114    {
    115        return 0;
    116    }
    117
    118    /**
    119     * Drops the block items with a specified chance of dropping the specified items
    120     */
    121    public void dropBlockAsItemWithChance(World par1World, int par2, int par3, int par4, int par5, float par6, int par7)
    122    {
    123        if (!par1World.isRemote)
    124        {
    125            TileEntityPiston var8 = this.getTileEntityAtLocation(par1World, par2, par3, par4);
    126
    127            if (var8 != null)
    128            {
    129                Block.blocksList[var8.getStoredBlockID()].dropBlockAsItem(par1World, par2, par3, par4, var8.getBlockMetadata(), 0);
    130            }
    131        }
    132    }
    133
    134    /**
    135     * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
    136     * their own) Args: x, y, z, neighbor blockID
    137     */
    138    public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
    139    {
    140        if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
    141        {
    142            ;
    143        }
    144    }
    145
    146    /**
    147     * gets a new TileEntityPiston created with the arguments provided.
    148     */
    149    public static TileEntity getTileEntity(int par0, int par1, int par2, boolean par3, boolean par4)
    150    {
    151        return new TileEntityPiston(par0, par1, par2, par3, par4);
    152    }
    153
    154    /**
    155     * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
    156     * cleared to be reused)
    157     */
    158    public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
    159    {
    160        TileEntityPiston var5 = this.getTileEntityAtLocation(par1World, par2, par3, par4);
    161
    162        if (var5 == null)
    163        {
    164            return null;
    165        }
    166        else
    167        {
    168            float var6 = var5.getProgress(0.0F);
    169
    170            if (var5.isExtending())
    171            {
    172                var6 = 1.0F - var6;
    173            }
    174
    175            return this.getAxisAlignedBB(par1World, par2, par3, par4, var5.getStoredBlockID(), var6, var5.getPistonOrientation());
    176        }
    177    }
    178
    179    /**
    180     * Updates the blocks bounds based on its current state. Args: world, x, y, z
    181     */
    182    public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
    183    {
    184        TileEntityPiston var5 = this.getTileEntityAtLocation(par1IBlockAccess, par2, par3, par4);
    185
    186        if (var5 != null)
    187        {
    188            Block var6 = Block.blocksList[var5.getStoredBlockID()];
    189
    190            if (var6 == null || var6 == this)
    191            {
    192                return;
    193            }
    194
    195            var6.setBlockBoundsBasedOnState(par1IBlockAccess, par2, par3, par4);
    196            float var7 = var5.getProgress(0.0F);
    197
    198            if (var5.isExtending())
    199            {
    200                var7 = 1.0F - var7;
    201            }
    202
    203            int var8 = var5.getPistonOrientation();
    204            this.minX = var6.getBlockBoundsMinX() - (double)((float)Facing.offsetsXForSide[var8] * var7);
    205            this.minY = var6.getBlockBoundsMinY() - (double)((float)Facing.offsetsYForSide[var8] * var7);
    206            this.minZ = var6.getBlockBoundsMinZ() - (double)((float)Facing.offsetsZForSide[var8] * var7);
    207            this.maxX = var6.getBlockBoundsMaxX() - (double)((float)Facing.offsetsXForSide[var8] * var7);
    208            this.maxY = var6.getBlockBoundsMaxY() - (double)((float)Facing.offsetsYForSide[var8] * var7);
    209            this.maxZ = var6.getBlockBoundsMaxZ() - (double)((float)Facing.offsetsZForSide[var8] * var7);
    210        }
    211    }
    212
    213    public AxisAlignedBB getAxisAlignedBB(World par1World, int par2, int par3, int par4, int par5, float par6, int par7)
    214    {
    215        if (par5 != 0 && par5 != this.blockID)
    216        {
    217            AxisAlignedBB var8 = Block.blocksList[par5].getCollisionBoundingBoxFromPool(par1World, par2, par3, par4);
    218
    219            if (var8 == null)
    220            {
    221                return null;
    222            }
    223            else
    224            {
    225                if (Facing.offsetsXForSide[par7] < 0)
    226                {
    227                    var8.minX -= (double)((float)Facing.offsetsXForSide[par7] * par6);
    228                }
    229                else
    230                {
    231                    var8.maxX -= (double)((float)Facing.offsetsXForSide[par7] * par6);
    232                }
    233
    234                if (Facing.offsetsYForSide[par7] < 0)
    235                {
    236                    var8.minY -= (double)((float)Facing.offsetsYForSide[par7] * par6);
    237                }
    238                else
    239                {
    240                    var8.maxY -= (double)((float)Facing.offsetsYForSide[par7] * par6);
    241                }
    242
    243                if (Facing.offsetsZForSide[par7] < 0)
    244                {
    245                    var8.minZ -= (double)((float)Facing.offsetsZForSide[par7] * par6);
    246                }
    247                else
    248                {
    249                    var8.maxZ -= (double)((float)Facing.offsetsZForSide[par7] * par6);
    250                }
    251
    252                return var8;
    253            }
    254        }
    255        else
    256        {
    257            return null;
    258        }
    259    }
    260
    261    /**
    262     * gets the piston tile entity at the specified location
    263     */
    264    private TileEntityPiston getTileEntityAtLocation(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
    265    {
    266        TileEntity var5 = par1IBlockAccess.getBlockTileEntity(par2, par3, par4);
    267        return var5 instanceof TileEntityPiston ? (TileEntityPiston)var5 : null;
    268    }
    269
    270    @SideOnly(Side.CLIENT)
    271
    272    /**
    273     * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
    274     */
    275    public int idPicked(World par1World, int par2, int par3, int par4)
    276    {
    277        return 0;
    278    }
    279}