001package net.minecraft.block;
002
003import cpw.mods.fml.relauncher.Side;
004import cpw.mods.fml.relauncher.SideOnly;
005import java.util.List;
006import java.util.Random;
007import net.minecraft.block.material.Material;
008import net.minecraft.entity.Entity;
009import net.minecraft.util.AxisAlignedBB;
010import net.minecraft.util.Facing;
011import net.minecraft.world.IBlockAccess;
012import net.minecraft.world.World;
013
014public class BlockPistonExtension extends Block
015{
016    /** The texture for the 'head' of the piston. Sticky or normal. */
017    private int headTexture = -1;
018
019    public BlockPistonExtension(int par1, int par2)
020    {
021        super(par1, par2, Material.piston);
022        this.setStepSound(soundStoneFootstep);
023        this.setHardness(0.5F);
024    }
025
026    @SideOnly(Side.CLIENT)
027    public void setHeadTexture(int par1)
028    {
029        this.headTexture = par1;
030    }
031
032    @SideOnly(Side.CLIENT)
033    public void clearHeadTexture()
034    {
035        this.headTexture = -1;
036    }
037
038    /**
039     * ejects contained items into the world, and notifies neighbours of an update, as appropriate
040     */
041    public void breakBlock(World par1World, int par2, int par3, int par4, int par5, int par6)
042    {
043        super.breakBlock(par1World, par2, par3, par4, par5, par6);
044        int var7 = Facing.faceToSide[getDirectionMeta(par6)];
045        par2 += Facing.offsetsXForSide[var7];
046        par3 += Facing.offsetsYForSide[var7];
047        par4 += Facing.offsetsZForSide[var7];
048        int var8 = par1World.getBlockId(par2, par3, par4);
049
050        if (var8 == Block.pistonBase.blockID || var8 == Block.pistonStickyBase.blockID)
051        {
052            par6 = par1World.getBlockMetadata(par2, par3, par4);
053
054            if (BlockPistonBase.isExtended(par6))
055            {
056                Block.blocksList[var8].dropBlockAsItem(par1World, par2, par3, par4, par6, 0);
057                par1World.setBlockWithNotify(par2, par3, par4, 0);
058            }
059        }
060    }
061
062    /**
063     * From the specified side and block metadata retrieves the blocks texture. Args: side, metadata
064     */
065    public int getBlockTextureFromSideAndMetadata(int par1, int par2)
066    {
067        int var3 = getDirectionMeta(par2);
068        return par1 == var3 ? (this.headTexture >= 0 ? this.headTexture : ((par2 & 8) != 0 ? this.blockIndexInTexture - 1 : this.blockIndexInTexture)) : (var3 < 6 && par1 == Facing.faceToSide[var3] ? 107 : 108);
069    }
070
071    /**
072     * The type of render function that is called for this block
073     */
074    public int getRenderType()
075    {
076        return 17;
077    }
078
079    /**
080     * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
081     * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
082     */
083    public boolean isOpaqueCube()
084    {
085        return false;
086    }
087
088    /**
089     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
090     */
091    public boolean renderAsNormalBlock()
092    {
093        return false;
094    }
095
096    /**
097     * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
098     */
099    public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
100    {
101        return false;
102    }
103
104    /**
105     * checks to see if you can place this block can be placed on that side of a block: BlockLever overrides
106     */
107    public boolean canPlaceBlockOnSide(World par1World, int par2, int par3, int par4, int par5)
108    {
109        return false;
110    }
111
112    /**
113     * Returns the quantity of items to drop on block destruction.
114     */
115    public int quantityDropped(Random par1Random)
116    {
117        return 0;
118    }
119
120    /**
121     * if the specified block is in the given AABB, add its collision bounding box to the given list
122     */
123    public void addCollidingBlockToList(World par1World, int par2, int par3, int par4, AxisAlignedBB par5AxisAlignedBB, List par6List, Entity par7Entity)
124    {
125        int var8 = par1World.getBlockMetadata(par2, par3, par4);
126
127        switch (getDirectionMeta(var8))
128        {
129            case 0:
130                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.25F, 1.0F);
131                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
132                this.setBlockBounds(0.375F, 0.25F, 0.375F, 0.625F, 1.0F, 0.625F);
133                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
134                break;
135            case 1:
136                this.setBlockBounds(0.0F, 0.75F, 0.0F, 1.0F, 1.0F, 1.0F);
137                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
138                this.setBlockBounds(0.375F, 0.0F, 0.375F, 0.625F, 0.75F, 0.625F);
139                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
140                break;
141            case 2:
142                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.25F);
143                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
144                this.setBlockBounds(0.25F, 0.375F, 0.25F, 0.75F, 0.625F, 1.0F);
145                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
146                break;
147            case 3:
148                this.setBlockBounds(0.0F, 0.0F, 0.75F, 1.0F, 1.0F, 1.0F);
149                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
150                this.setBlockBounds(0.25F, 0.375F, 0.0F, 0.75F, 0.625F, 0.75F);
151                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
152                break;
153            case 4:
154                this.setBlockBounds(0.0F, 0.0F, 0.0F, 0.25F, 1.0F, 1.0F);
155                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
156                this.setBlockBounds(0.375F, 0.25F, 0.25F, 0.625F, 0.75F, 1.0F);
157                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
158                break;
159            case 5:
160                this.setBlockBounds(0.75F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
161                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
162                this.setBlockBounds(0.0F, 0.375F, 0.25F, 0.75F, 0.625F, 0.75F);
163                super.addCollidingBlockToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
164        }
165
166        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
167    }
168
169    /**
170     * Updates the blocks bounds based on its current state. Args: world, x, y, z
171     */
172    public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
173    {
174        int var5 = par1IBlockAccess.getBlockMetadata(par2, par3, par4);
175
176        switch (getDirectionMeta(var5))
177        {
178            case 0:
179                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.25F, 1.0F);
180                break;
181            case 1:
182                this.setBlockBounds(0.0F, 0.75F, 0.0F, 1.0F, 1.0F, 1.0F);
183                break;
184            case 2:
185                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.25F);
186                break;
187            case 3:
188                this.setBlockBounds(0.0F, 0.0F, 0.75F, 1.0F, 1.0F, 1.0F);
189                break;
190            case 4:
191                this.setBlockBounds(0.0F, 0.0F, 0.0F, 0.25F, 1.0F, 1.0F);
192                break;
193            case 5:
194                this.setBlockBounds(0.75F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
195        }
196    }
197
198    /**
199     * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
200     * their own) Args: x, y, z, neighbor blockID
201     */
202    public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
203    {
204        int var6 = getDirectionMeta(par1World.getBlockMetadata(par2, par3, par4));
205        int var7 = par1World.getBlockId(par2 - Facing.offsetsXForSide[var6], par3 - Facing.offsetsYForSide[var6], par4 - Facing.offsetsZForSide[var6]);
206
207        if (var7 != Block.pistonBase.blockID && var7 != Block.pistonStickyBase.blockID)
208        {
209            par1World.setBlockWithNotify(par2, par3, par4, 0);
210        }
211        else
212        {
213            Block.blocksList[var7].onNeighborBlockChange(par1World, par2 - Facing.offsetsXForSide[var6], par3 - Facing.offsetsYForSide[var6], par4 - Facing.offsetsZForSide[var6], par5);
214        }
215    }
216
217    public static int getDirectionMeta(int par0)
218    {
219        return par0 & 7;
220    }
221
222    @SideOnly(Side.CLIENT)
223
224    /**
225     * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
226     */
227    public int idPicked(World par1World, int par2, int par3, int par4)
228    {
229        return 0;
230    }
231}