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.entity.player.EntityPlayer;
009import net.minecraft.tileentity.TileEntity;
010import net.minecraft.tileentity.TileEntityPiston;
011import net.minecraft.util.AxisAlignedBB;
012import net.minecraft.util.Facing;
013import net.minecraft.world.IBlockAccess;
014import net.minecraft.world.World;
015
016public class BlockPistonMoving extends BlockContainer
017{
018    public BlockPistonMoving(int par1)
019    {
020        super(par1, Material.piston);
021        this.setHardness(-1.0F);
022    }
023
024    /**
025     * Returns a new instance of a block's tile entity class. Called on placing the block.
026     */
027    public TileEntity createNewTileEntity(World par1World)
028    {
029        return null;
030    }
031
032    /**
033     * Called whenever the block is added into the world. Args: world, x, y, z
034     */
035    public void onBlockAdded(World par1World, int par2, int par3, int par4) {}
036
037    /**
038     * ejects contained items into the world, and notifies neighbours of an update, as appropriate
039     */
040    public void breakBlock(World par1World, int par2, int par3, int par4, int par5, int par6)
041    {
042        TileEntity tileentity = par1World.getBlockTileEntity(par2, par3, par4);
043
044        if (tileentity instanceof TileEntityPiston)
045        {
046            ((TileEntityPiston)tileentity).clearPistonTileEntity();
047        }
048        else
049        {
050            super.breakBlock(par1World, par2, par3, par4, par5, par6);
051        }
052    }
053
054    /**
055     * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
056     */
057    public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
058    {
059        return false;
060    }
061
062    /**
063     * checks to see if you can place this block can be placed on that side of a block: BlockLever overrides
064     */
065    public boolean canPlaceBlockOnSide(World par1World, int par2, int par3, int par4, int par5)
066    {
067        return false;
068    }
069
070    /**
071     * The type of render function that is called for this block
072     */
073    public int getRenderType()
074    {
075        return -1;
076    }
077
078    /**
079     * Is this block (a) opaque and (b) a full 1m cube?  This determines whether or not to render the shared face of two
080     * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
081     */
082    public boolean isOpaqueCube()
083    {
084        return false;
085    }
086
087    /**
088     * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
089     */
090    public boolean renderAsNormalBlock()
091    {
092        return false;
093    }
094
095    /**
096     * Called upon block activation (right click on the block.)
097     */
098    public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9)
099    {
100        if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
101        {
102            par1World.setBlockToAir(par2, par3, par4);
103            return true;
104        }
105        else
106        {
107            return false;
108        }
109    }
110
111    /**
112     * Returns the ID of the items to drop on destruction.
113     */
114    public int idDropped(int par1, Random par2Random, int par3)
115    {
116        return 0;
117    }
118
119    /**
120     * Drops the block items with a specified chance of dropping the specified items
121     */
122    public void dropBlockAsItemWithChance(World par1World, int par2, int par3, int par4, int par5, float par6, int par7)
123    {
124        if (!par1World.isRemote)
125        {
126            TileEntityPiston tileentitypiston = this.getTileEntityAtLocation(par1World, par2, par3, par4);
127
128            if (tileentitypiston != null)
129            {
130                Block.blocksList[tileentitypiston.getStoredBlockID()].dropBlockAsItem(par1World, par2, par3, par4, tileentitypiston.getBlockMetadata(), 0);
131            }
132        }
133    }
134
135    /**
136     * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
137     * their own) Args: x, y, z, neighbor blockID
138     */
139    public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
140    {
141        if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
142        {
143            ;
144        }
145    }
146
147    /**
148     * gets a new TileEntityPiston created with the arguments provided.
149     */
150    public static TileEntity getTileEntity(int par0, int par1, int par2, boolean par3, boolean par4)
151    {
152        return new TileEntityPiston(par0, par1, par2, par3, par4);
153    }
154
155    /**
156     * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
157     * cleared to be reused)
158     */
159    public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
160    {
161        TileEntityPiston tileentitypiston = this.getTileEntityAtLocation(par1World, par2, par3, par4);
162
163        if (tileentitypiston == null)
164        {
165            return null;
166        }
167        else
168        {
169            float f = tileentitypiston.getProgress(0.0F);
170
171            if (tileentitypiston.isExtending())
172            {
173                f = 1.0F - f;
174            }
175
176            return this.getAxisAlignedBB(par1World, par2, par3, par4, tileentitypiston.getStoredBlockID(), f, tileentitypiston.getPistonOrientation());
177        }
178    }
179
180    /**
181     * Updates the blocks bounds based on its current state. Args: world, x, y, z
182     */
183    public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
184    {
185        TileEntityPiston tileentitypiston = this.getTileEntityAtLocation(par1IBlockAccess, par2, par3, par4);
186
187        if (tileentitypiston != null)
188        {
189            Block block = Block.blocksList[tileentitypiston.getStoredBlockID()];
190
191            if (block == null || block == this)
192            {
193                return;
194            }
195
196            block.setBlockBoundsBasedOnState(par1IBlockAccess, par2, par3, par4);
197            float f = tileentitypiston.getProgress(0.0F);
198
199            if (tileentitypiston.isExtending())
200            {
201                f = 1.0F - f;
202            }
203
204            int l = tileentitypiston.getPistonOrientation();
205            this.minX = block.getBlockBoundsMinX() - (double)((float)Facing.offsetsXForSide[l] * f);
206            this.minY = block.getBlockBoundsMinY() - (double)((float)Facing.offsetsYForSide[l] * f);
207            this.minZ = block.getBlockBoundsMinZ() - (double)((float)Facing.offsetsZForSide[l] * f);
208            this.maxX = block.getBlockBoundsMaxX() - (double)((float)Facing.offsetsXForSide[l] * f);
209            this.maxY = block.getBlockBoundsMaxY() - (double)((float)Facing.offsetsYForSide[l] * f);
210            this.maxZ = block.getBlockBoundsMaxZ() - (double)((float)Facing.offsetsZForSide[l] * f);
211        }
212    }
213
214    public AxisAlignedBB getAxisAlignedBB(World par1World, int par2, int par3, int par4, int par5, float par6, int par7)
215    {
216        if (par5 != 0 && par5 != this.blockID)
217        {
218            AxisAlignedBB axisalignedbb = Block.blocksList[par5].getCollisionBoundingBoxFromPool(par1World, par2, par3, par4);
219
220            if (axisalignedbb == null)
221            {
222                return null;
223            }
224            else
225            {
226                if (Facing.offsetsXForSide[par7] < 0)
227                {
228                    axisalignedbb.minX -= (double)((float)Facing.offsetsXForSide[par7] * par6);
229                }
230                else
231                {
232                    axisalignedbb.maxX -= (double)((float)Facing.offsetsXForSide[par7] * par6);
233                }
234
235                if (Facing.offsetsYForSide[par7] < 0)
236                {
237                    axisalignedbb.minY -= (double)((float)Facing.offsetsYForSide[par7] * par6);
238                }
239                else
240                {
241                    axisalignedbb.maxY -= (double)((float)Facing.offsetsYForSide[par7] * par6);
242                }
243
244                if (Facing.offsetsZForSide[par7] < 0)
245                {
246                    axisalignedbb.minZ -= (double)((float)Facing.offsetsZForSide[par7] * par6);
247                }
248                else
249                {
250                    axisalignedbb.maxZ -= (double)((float)Facing.offsetsZForSide[par7] * par6);
251                }
252
253                return axisalignedbb;
254            }
255        }
256        else
257        {
258            return null;
259        }
260    }
261
262    /**
263     * gets the piston tile entity at the specified location
264     */
265    private TileEntityPiston getTileEntityAtLocation(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
266    {
267        TileEntity tileentity = par1IBlockAccess.getBlockTileEntity(par2, par3, par4);
268        return tileentity instanceof TileEntityPiston ? (TileEntityPiston)tileentity : null;
269    }
270
271    @SideOnly(Side.CLIENT)
272
273    /**
274     * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
275     */
276    public int idPicked(World par1World, int par2, int par3, int par4)
277    {
278        return 0;
279    }
280
281    @SideOnly(Side.CLIENT)
282
283    /**
284     * When this method is called, your block should register all the icons it needs with the given IconRegister. This
285     * is the only chance you get to register icons.
286     */
287    public void registerIcons(IconRegister par1IconRegister)
288    {
289        this.blockIcon = par1IconRegister.registerIcon("piston_top");
290    }
291}