001 package net.minecraft.src;
002
003 import cpw.mods.fml.common.Side;
004 import cpw.mods.fml.common.asm.SideOnly;
005 import java.util.Random;
006
007 public class BlockPistonMoving extends BlockContainer
008 {
009 public BlockPistonMoving(int par1)
010 {
011 super(par1, Material.piston);
012 this.setHardness(-1.0F);
013 }
014
015 /**
016 * Returns a new instance of a block's tile entity class. Called on placing the block.
017 */
018 public TileEntity createNewTileEntity(World par1World)
019 {
020 return null;
021 }
022
023 /**
024 * Called whenever the block is added into the world. Args: world, x, y, z
025 */
026 public void onBlockAdded(World par1World, int par2, int par3, int par4) {}
027
028 /**
029 * ejects contained items into the world, and notifies neighbours of an update, as appropriate
030 */
031 public void breakBlock(World par1World, int par2, int par3, int par4, int par5, int par6)
032 {
033 TileEntity var7 = par1World.getBlockTileEntity(par2, par3, par4);
034
035 if (var7 instanceof TileEntityPiston)
036 {
037 ((TileEntityPiston)var7).clearPistonTileEntity();
038 }
039 else
040 {
041 super.breakBlock(par1World, par2, par3, par4, par5, par6);
042 }
043 }
044
045 /**
046 * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z
047 */
048 public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4)
049 {
050 return false;
051 }
052
053 /**
054 * checks to see if you can place this block can be placed on that side of a block: BlockLever overrides
055 */
056 public boolean canPlaceBlockOnSide(World par1World, int par2, int par3, int par4, int par5)
057 {
058 return false;
059 }
060
061 /**
062 * The type of render function that is called for this block
063 */
064 public int getRenderType()
065 {
066 return -1;
067 }
068
069 /**
070 * Is this block (a) opaque and (b) a full 1m cube? This determines whether or not to render the shared face of two
071 * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block.
072 */
073 public boolean isOpaqueCube()
074 {
075 return false;
076 }
077
078 /**
079 * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc)
080 */
081 public boolean renderAsNormalBlock()
082 {
083 return false;
084 }
085
086 /**
087 * Called upon block activation (right click on the block.)
088 */
089 public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9)
090 {
091 if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
092 {
093 par1World.setBlockWithNotify(par2, par3, par4, 0);
094 return true;
095 }
096 else
097 {
098 return false;
099 }
100 }
101
102 /**
103 * Returns the ID of the items to drop on destruction.
104 */
105 public int idDropped(int par1, Random par2Random, int par3)
106 {
107 return 0;
108 }
109
110 /**
111 * Drops the block items with a specified chance of dropping the specified items
112 */
113 public void dropBlockAsItemWithChance(World par1World, int par2, int par3, int par4, int par5, float par6, int par7)
114 {
115 if (!par1World.isRemote)
116 {
117 TileEntityPiston var8 = this.getTileEntityAtLocation(par1World, par2, par3, par4);
118
119 if (var8 != null)
120 {
121 Block.blocksList[var8.getStoredBlockID()].dropBlockAsItem(par1World, par2, par3, par4, var8.getBlockMetadata(), 0);
122 }
123 }
124 }
125
126 /**
127 * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are
128 * their own) Args: x, y, z, neighbor blockID
129 */
130 public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5)
131 {
132 if (!par1World.isRemote && par1World.getBlockTileEntity(par2, par3, par4) == null)
133 {
134 ;
135 }
136 }
137
138 /**
139 * gets a new TileEntityPiston created with the arguments provided.
140 */
141 public static TileEntity getTileEntity(int par0, int par1, int par2, boolean par3, boolean par4)
142 {
143 return new TileEntityPiston(par0, par1, par2, par3, par4);
144 }
145
146 /**
147 * Returns a bounding box from the pool of bounding boxes (this means this box can change after the pool has been
148 * cleared to be reused)
149 */
150 public AxisAlignedBB getCollisionBoundingBoxFromPool(World par1World, int par2, int par3, int par4)
151 {
152 TileEntityPiston var5 = this.getTileEntityAtLocation(par1World, par2, par3, par4);
153
154 if (var5 == null)
155 {
156 return null;
157 }
158 else
159 {
160 float var6 = var5.getProgress(0.0F);
161
162 if (var5.isExtending())
163 {
164 var6 = 1.0F - var6;
165 }
166
167 return this.getAxisAlignedBB(par1World, par2, par3, par4, var5.getStoredBlockID(), var6, var5.getPistonOrientation());
168 }
169 }
170
171 /**
172 * Updates the blocks bounds based on its current state. Args: world, x, y, z
173 */
174 public void setBlockBoundsBasedOnState(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
175 {
176 TileEntityPiston var5 = this.getTileEntityAtLocation(par1IBlockAccess, par2, par3, par4);
177
178 if (var5 != null)
179 {
180 Block var6 = Block.blocksList[var5.getStoredBlockID()];
181
182 if (var6 == null || var6 == this)
183 {
184 return;
185 }
186
187 var6.setBlockBoundsBasedOnState(par1IBlockAccess, par2, par3, par4);
188 float var7 = var5.getProgress(0.0F);
189
190 if (var5.isExtending())
191 {
192 var7 = 1.0F - var7;
193 }
194
195 int var8 = var5.getPistonOrientation();
196 this.minX = var6.getBlockBoundsMinX() - (double)((float)Facing.offsetsXForSide[var8] * var7);
197 this.minY = var6.getBlockBoundsMinY() - (double)((float)Facing.offsetsYForSide[var8] * var7);
198 this.minZ = var6.getBlockBoundsMinZ() - (double)((float)Facing.offsetsZForSide[var8] * var7);
199 this.maxX = var6.getBlockBoundsMaxX() - (double)((float)Facing.offsetsXForSide[var8] * var7);
200 this.maxY = var6.getBlockBoundsMaxY() - (double)((float)Facing.offsetsYForSide[var8] * var7);
201 this.maxZ = var6.getBlockBoundsMaxZ() - (double)((float)Facing.offsetsZForSide[var8] * var7);
202 }
203 }
204
205 public AxisAlignedBB getAxisAlignedBB(World par1World, int par2, int par3, int par4, int par5, float par6, int par7)
206 {
207 if (par5 != 0 && par5 != this.blockID)
208 {
209 AxisAlignedBB var8 = Block.blocksList[par5].getCollisionBoundingBoxFromPool(par1World, par2, par3, par4);
210
211 if (var8 == null)
212 {
213 return null;
214 }
215 else
216 {
217 if (Facing.offsetsXForSide[par7] < 0)
218 {
219 var8.minX -= (double)((float)Facing.offsetsXForSide[par7] * par6);
220 }
221 else
222 {
223 var8.maxX -= (double)((float)Facing.offsetsXForSide[par7] * par6);
224 }
225
226 if (Facing.offsetsYForSide[par7] < 0)
227 {
228 var8.minY -= (double)((float)Facing.offsetsYForSide[par7] * par6);
229 }
230 else
231 {
232 var8.maxY -= (double)((float)Facing.offsetsYForSide[par7] * par6);
233 }
234
235 if (Facing.offsetsZForSide[par7] < 0)
236 {
237 var8.minZ -= (double)((float)Facing.offsetsZForSide[par7] * par6);
238 }
239 else
240 {
241 var8.maxZ -= (double)((float)Facing.offsetsZForSide[par7] * par6);
242 }
243
244 return var8;
245 }
246 }
247 else
248 {
249 return null;
250 }
251 }
252
253 /**
254 * gets the piston tile entity at the specified location
255 */
256 private TileEntityPiston getTileEntityAtLocation(IBlockAccess par1IBlockAccess, int par2, int par3, int par4)
257 {
258 TileEntity var5 = par1IBlockAccess.getBlockTileEntity(par2, par3, par4);
259 return var5 instanceof TileEntityPiston ? (TileEntityPiston)var5 : null;
260 }
261
262 @SideOnly(Side.CLIENT)
263
264 /**
265 * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative)
266 */
267 public int idPicked(World par1World, int par2, int par3, int par4)
268 {
269 return 0;
270 }
271 }