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.client.renderer.texture.IconRegister;
009import net.minecraft.entity.Entity;
010import net.minecraft.util.AxisAlignedBB;
011import net.minecraft.util.Facing;
012import net.minecraft.util.Icon;
013import net.minecraft.world.IBlockAccess;
014import net.minecraft.world.World;
015
016public class BlockPistonExtension extends Block
017{
018    /** The texture for the 'head' of the piston. Sticky or normal. */
019    private Icon headTexture = null;
020
021    public BlockPistonExtension(int par1)
022    {
023        super(par1, Material.piston);
024        this.setStepSound(soundStoneFootstep);
025        this.setHardness(0.5F);
026    }
027
028    @SideOnly(Side.CLIENT)
029    public void setHeadTexture(Icon par1Icon)
030    {
031        this.headTexture = par1Icon;
032    }
033
034    /**
035     * ejects contained items into the world, and notifies neighbours of an update, as appropriate
036     */
037    public void breakBlock(World par1World, int par2, int par3, int par4, int par5, int par6)
038    {
039        super.breakBlock(par1World, par2, par3, par4, par5, par6);
040        int j1 = Facing.faceToSide[getDirectionMeta(par6)];
041        par2 += Facing.offsetsXForSide[j1];
042        par3 += Facing.offsetsYForSide[j1];
043        par4 += Facing.offsetsZForSide[j1];
044        int k1 = par1World.getBlockId(par2, par3, par4);
045
046        if (k1 == Block.pistonBase.blockID || k1 == Block.pistonStickyBase.blockID)
047        {
048            par6 = par1World.getBlockMetadata(par2, par3, par4);
049
050            if (BlockPistonBase.isExtended(par6))
051            {
052                Block.blocksList[k1].dropBlockAsItem(par1World, par2, par3, par4, par6, 0);
053                par1World.func_94571_i(par2, par3, par4);
054            }
055        }
056    }
057
058    @SideOnly(Side.CLIENT)
059    public void clearHeadTexture()
060    {
061        this.headTexture = null;
062    }
063
064    @SideOnly(Side.CLIENT)
065
066    /**
067     * From the specified side and block metadata retrieves the blocks texture. Args: side, metadata
068     */
069    public Icon getBlockTextureFromSideAndMetadata(int par1, int par2)
070    {
071        int k = getDirectionMeta(par2);
072        return par1 == k ? (this.headTexture != null ? this.headTexture : ((par2 & 8) != 0 ? BlockPistonBase.func_94496_b("piston_top_sticky") : BlockPistonBase.func_94496_b("piston_top"))) : (k < 6 && par1 == Facing.faceToSide[k] ? BlockPistonBase.func_94496_b("piston_top") : BlockPistonBase.func_94496_b("piston_side"));
073    }
074
075    @SideOnly(Side.CLIENT)
076    public void func_94332_a(IconRegister par1IconRegister) {}
077
078    /**
079     * The type of render function that is called for this block
080     */
081    public int getRenderType()
082    {
083        return 17;
084    }
085
086    /**
087     * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
088     * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
089     */
090    public boolean isOpaqueCube()
091    {
092        return false;
093    }
094
095    /**
096     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
097     */
098    public boolean renderAsNormalBlock()
099    {
100        return false;
101    }
102
103    /**
104     * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
105     */
106    public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
107    {
108        return false;
109    }
110
111    /**
112     * checks to see if you can place this block can be placed on that side of a block: BlockLever overrides
113     */
114    public boolean canPlaceBlockOnSide(World par1World, int par2, int par3, int par4, int par5)
115    {
116        return false;
117    }
118
119    /**
120     * Returns the quantity of items to drop on block destruction.
121     */
122    public int quantityDropped(Random par1Random)
123    {
124        return 0;
125    }
126
127    /**
128     * Adds all intersecting collision boxes to a list. (Be sure to only add boxes to the list if they intersect the
129     * mask.) Parameters: World, X, Y, Z, mask, list, colliding entity
130     */
131    public void addCollisionBoxesToList(World par1World, int par2, int par3, int par4, AxisAlignedBB par5AxisAlignedBB, List par6List, Entity par7Entity)
132    {
133        int l = par1World.getBlockMetadata(par2, par3, par4);
134
135        switch (getDirectionMeta(l))
136        {
137            case 0:
138                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.25F, 1.0F);
139                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
140                this.setBlockBounds(0.375F, 0.25F, 0.375F, 0.625F, 1.0F, 0.625F);
141                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
142                break;
143            case 1:
144                this.setBlockBounds(0.0F, 0.75F, 0.0F, 1.0F, 1.0F, 1.0F);
145                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
146                this.setBlockBounds(0.375F, 0.0F, 0.375F, 0.625F, 0.75F, 0.625F);
147                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
148                break;
149            case 2:
150                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.25F);
151                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
152                this.setBlockBounds(0.25F, 0.375F, 0.25F, 0.75F, 0.625F, 1.0F);
153                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
154                break;
155            case 3:
156                this.setBlockBounds(0.0F, 0.0F, 0.75F, 1.0F, 1.0F, 1.0F);
157                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
158                this.setBlockBounds(0.25F, 0.375F, 0.0F, 0.75F, 0.625F, 0.75F);
159                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
160                break;
161            case 4:
162                this.setBlockBounds(0.0F, 0.0F, 0.0F, 0.25F, 1.0F, 1.0F);
163                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
164                this.setBlockBounds(0.375F, 0.25F, 0.25F, 0.625F, 0.75F, 1.0F);
165                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
166                break;
167            case 5:
168                this.setBlockBounds(0.75F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
169                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
170                this.setBlockBounds(0.0F, 0.375F, 0.25F, 0.75F, 0.625F, 0.75F);
171                super.addCollisionBoxesToList(par1World, par2, par3, par4, par5AxisAlignedBB, par6List, par7Entity);
172        }
173
174        this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
175    }
176
177    /**
178     * Updates the blocks bounds based on its current state. Args: world, x, y, z
179     */
180    public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
181    {
182        int l = par1IBlockAccess.getBlockMetadata(par2, par3, par4);
183
184        switch (getDirectionMeta(l))
185        {
186            case 0:
187                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.25F, 1.0F);
188                break;
189            case 1:
190                this.setBlockBounds(0.0F, 0.75F, 0.0F, 1.0F, 1.0F, 1.0F);
191                break;
192            case 2:
193                this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 1.0F, 0.25F);
194                break;
195            case 3:
196                this.setBlockBounds(0.0F, 0.0F, 0.75F, 1.0F, 1.0F, 1.0F);
197                break;
198            case 4:
199                this.setBlockBounds(0.0F, 0.0F, 0.0F, 0.25F, 1.0F, 1.0F);
200                break;
201            case 5:
202                this.setBlockBounds(0.75F, 0.0F, 0.0F, 1.0F, 1.0F, 1.0F);
203        }
204    }
205
206    /**
207     * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
208     * their own) Args: x, y, z, neighbor blockID
209     */
210    public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
211    {
212        int i1 = getDirectionMeta(par1World.getBlockMetadata(par2, par3, par4));
213        int j1 = par1World.getBlockId(par2 - Facing.offsetsXForSide[i1], par3 - Facing.offsetsYForSide[i1], par4 - Facing.offsetsZForSide[i1]);
214
215        if (j1 != Block.pistonBase.blockID && j1 != Block.pistonStickyBase.blockID)
216        {
217            par1World.func_94571_i(par2, par3, par4);
218        }
219        else
220        {
221            Block.blocksList[j1].onNeighborBlockChange(par1World, par2 - Facing.offsetsXForSide[i1], par3 - Facing.offsetsYForSide[i1], par4 - Facing.offsetsZForSide[i1], par5);
222        }
223    }
224
225    public static int getDirectionMeta(int par0)
226    {
227        return par0 & 7;
228    }
229
230    @SideOnly(Side.CLIENT)
231
232    /**
233     * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
234     */
235    public int idPicked(World par1World, int par2, int par3, int par4)
236    {
237        return 0;
238    }
239}