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 BlockRedstoneRepeater extends BlockDirectional 008 { 009 /** The offsets for the two torches in redstone repeater blocks. */ 010 public static final double[] repeaterTorchOffset = new double[] { -0.0625D, 0.0625D, 0.1875D, 0.3125D}; 011 012 /** The states in which the redstone repeater blocks can be. */ 013 private static final int[] repeaterState = new int[] {1, 2, 3, 4}; 014 015 /** Tells whether the repeater is powered or not */ 016 private final boolean isRepeaterPowered; 017 018 protected BlockRedstoneRepeater(int par1, boolean par2) 019 { 020 super(par1, 6, Material.circuits); 021 this.isRepeaterPowered = par2; 022 this.setBlockBounds(0.0F, 0.0F, 0.0F, 1.0F, 0.125F, 1.0F); 023 } 024 025 /** 026 * If this block doesn't render as an ordinary block it will return False (examples: signs, buttons, stairs, etc) 027 */ 028 public boolean renderAsNormalBlock() 029 { 030 return false; 031 } 032 033 /** 034 * Checks to see if its valid to put this block at the specified coordinates. Args: world, x, y, z 035 */ 036 public boolean canPlaceBlockAt(World par1World, int par2, int par3, int par4) 037 { 038 return !par1World.doesBlockHaveSolidTopSurface(par2, par3 - 1, par4) ? false : super.canPlaceBlockAt(par1World, par2, par3, par4); 039 } 040 041 /** 042 * Can this block stay at this position. Similar to canPlaceBlockAt except gets checked often with plants. 043 */ 044 public boolean canBlockStay(World par1World, int par2, int par3, int par4) 045 { 046 return !par1World.doesBlockHaveSolidTopSurface(par2, par3 - 1, par4) ? false : super.canBlockStay(par1World, par2, par3, par4); 047 } 048 049 /** 050 * Ticks the block if it's been scheduled 051 */ 052 public void updateTick(World par1World, int par2, int par3, int par4, Random par5Random) 053 { 054 int var6 = par1World.getBlockMetadata(par2, par3, par4); 055 boolean var7 = this.func_82523_e(par1World, par2, par3, par4, var6); 056 057 if (!var7) 058 { 059 boolean var8 = this.ignoreTick(par1World, par2, par3, par4, var6); 060 061 if (this.isRepeaterPowered && !var8) 062 { 063 par1World.setBlockAndMetadataWithNotify(par2, par3, par4, Block.redstoneRepeaterIdle.blockID, var6); 064 } 065 else if (!this.isRepeaterPowered) 066 { 067 par1World.setBlockAndMetadataWithNotify(par2, par3, par4, Block.redstoneRepeaterActive.blockID, var6); 068 069 if (!var8) 070 { 071 int var9 = (var6 & 12) >> 2; 072 par1World.scheduleBlockUpdate(par2, par3, par4, Block.redstoneRepeaterActive.blockID, repeaterState[var9] * 2); 073 } 074 } 075 } 076 } 077 078 /** 079 * From the specified side and block metadata retrieves the blocks texture. Args: side, metadata 080 */ 081 public int getBlockTextureFromSideAndMetadata(int par1, int par2) 082 { 083 return par1 == 0 ? (this.isRepeaterPowered ? 99 : 115) : (par1 == 1 ? (this.isRepeaterPowered ? 147 : 131) : 5); 084 } 085 086 @SideOnly(Side.CLIENT) 087 088 /** 089 * Returns true if the given side of this block type should be rendered, if the adjacent block is at the given 090 * coordinates. Args: blockAccess, x, y, z, side 091 */ 092 public boolean shouldSideBeRendered(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5) 093 { 094 return par5 != 0 && par5 != 1; 095 } 096 097 /** 098 * The type of render function that is called for this block 099 */ 100 public int getRenderType() 101 { 102 return 15; 103 } 104 105 /** 106 * Returns the block texture based on the side being looked at. Args: side 107 */ 108 public int getBlockTextureFromSide(int par1) 109 { 110 return this.getBlockTextureFromSideAndMetadata(par1, 0); 111 } 112 113 /** 114 * Is this block indirectly powering the block on the specified side 115 */ 116 public boolean isIndirectlyPoweringTo(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5) 117 { 118 return this.isPoweringTo(par1IBlockAccess, par2, par3, par4, par5); 119 } 120 121 /** 122 * Is this block powering the block on the specified side 123 */ 124 public boolean isPoweringTo(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5) 125 { 126 if (!this.isRepeaterPowered) 127 { 128 return false; 129 } 130 else 131 { 132 int var6 = getDirection(par1IBlockAccess.getBlockMetadata(par2, par3, par4)); 133 return var6 == 0 && par5 == 3 ? true : (var6 == 1 && par5 == 4 ? true : (var6 == 2 && par5 == 2 ? true : var6 == 3 && par5 == 5)); 134 } 135 } 136 137 /** 138 * Lets the block know when one of its neighbor changes. Doesn't know which neighbor changed (coordinates passed are 139 * their own) Args: x, y, z, neighbor blockID 140 */ 141 public void onNeighborBlockChange(World par1World, int par2, int par3, int par4, int par5) 142 { 143 if (!this.canBlockStay(par1World, par2, par3, par4)) 144 { 145 this.dropBlockAsItem(par1World, par2, par3, par4, par1World.getBlockMetadata(par2, par3, par4), 0); 146 par1World.setBlockWithNotify(par2, par3, par4, 0); 147 par1World.notifyBlocksOfNeighborChange(par2 + 1, par3, par4, this.blockID); 148 par1World.notifyBlocksOfNeighborChange(par2 - 1, par3, par4, this.blockID); 149 par1World.notifyBlocksOfNeighborChange(par2, par3, par4 + 1, this.blockID); 150 par1World.notifyBlocksOfNeighborChange(par2, par3, par4 - 1, this.blockID); 151 par1World.notifyBlocksOfNeighborChange(par2, par3 - 1, par4, this.blockID); 152 par1World.notifyBlocksOfNeighborChange(par2, par3 + 1, par4, this.blockID); 153 } 154 else 155 { 156 int var6 = par1World.getBlockMetadata(par2, par3, par4); 157 boolean var7 = this.func_82523_e(par1World, par2, par3, par4, var6); 158 159 if (!var7) 160 { 161 boolean var8 = this.ignoreTick(par1World, par2, par3, par4, var6); 162 int var9 = (var6 & 12) >> 2; 163 164 if (this.isRepeaterPowered && !var8 || !this.isRepeaterPowered && var8) 165 { 166 byte var10 = 0; 167 int var11 = getDirection(var6); 168 169 if (func_82524_c(par1World.getBlockId(par2 - Direction.offsetX[var11], par3, par4 - Direction.offsetZ[var11]))) 170 { 171 var10 = -1; 172 } 173 174 par1World.func_82740_a(par2, par3, par4, this.blockID, repeaterState[var9] * 2, var10); 175 } 176 } 177 } 178 } 179 180 private boolean ignoreTick(World par1World, int par2, int par3, int par4, int par5) 181 { 182 int var6 = getDirection(par5); 183 184 switch (var6) 185 { 186 case 0: 187 return par1World.isBlockIndirectlyProvidingPowerTo(par2, par3, par4 + 1, 3) || par1World.getBlockId(par2, par3, par4 + 1) == Block.redstoneWire.blockID && par1World.getBlockMetadata(par2, par3, par4 + 1) > 0; 188 case 1: 189 return par1World.isBlockIndirectlyProvidingPowerTo(par2 - 1, par3, par4, 4) || par1World.getBlockId(par2 - 1, par3, par4) == Block.redstoneWire.blockID && par1World.getBlockMetadata(par2 - 1, par3, par4) > 0; 190 case 2: 191 return par1World.isBlockIndirectlyProvidingPowerTo(par2, par3, par4 - 1, 2) || par1World.getBlockId(par2, par3, par4 - 1) == Block.redstoneWire.blockID && par1World.getBlockMetadata(par2, par3, par4 - 1) > 0; 192 case 3: 193 return par1World.isBlockIndirectlyProvidingPowerTo(par2 + 1, par3, par4, 5) || par1World.getBlockId(par2 + 1, par3, par4) == Block.redstoneWire.blockID && par1World.getBlockMetadata(par2 + 1, par3, par4) > 0; 194 default: 195 return false; 196 } 197 } 198 199 public boolean func_82523_e(IBlockAccess par1IBlockAccess, int par2, int par3, int par4, int par5) 200 { 201 int var6 = getDirection(par5); 202 203 switch (var6) 204 { 205 case 0: 206 case 2: 207 return par1IBlockAccess.isBlockProvidingPowerTo(par2 - 1, par3, par4, 4) && func_82524_c(par1IBlockAccess.getBlockId(par2 - 1, par3, par4)) || par1IBlockAccess.isBlockProvidingPowerTo(par2 + 1, par3, par4, 5) && func_82524_c(par1IBlockAccess.getBlockId(par2 + 1, par3, par4)); 208 case 1: 209 case 3: 210 return par1IBlockAccess.isBlockProvidingPowerTo(par2, par3, par4 + 1, 3) && func_82524_c(par1IBlockAccess.getBlockId(par2, par3, par4 + 1)) || par1IBlockAccess.isBlockProvidingPowerTo(par2, par3, par4 - 1, 2) && func_82524_c(par1IBlockAccess.getBlockId(par2, par3, par4 - 1)); 211 default: 212 return false; 213 } 214 } 215 216 /** 217 * Called upon block activation (right click on the block.) 218 */ 219 public boolean onBlockActivated(World par1World, int par2, int par3, int par4, EntityPlayer par5EntityPlayer, int par6, float par7, float par8, float par9) 220 { 221 int var10 = par1World.getBlockMetadata(par2, par3, par4); 222 int var11 = (var10 & 12) >> 2; 223 var11 = var11 + 1 << 2 & 12; 224 par1World.setBlockMetadataWithNotify(par2, par3, par4, var11 | var10 & 3); 225 return true; 226 } 227 228 /** 229 * Can this block provide power. Only wire currently seems to have this change based on its state. 230 */ 231 public boolean canProvidePower() 232 { 233 return true; 234 } 235 236 /** 237 * Called when the block is placed in the world. 238 */ 239 public void onBlockPlacedBy(World par1World, int par2, int par3, int par4, EntityLiving par5EntityLiving) 240 { 241 int var6 = ((MathHelper.floor_double((double)(par5EntityLiving.rotationYaw * 4.0F / 360.0F) + 0.5D) & 3) + 2) % 4; 242 par1World.setBlockMetadataWithNotify(par2, par3, par4, var6); 243 boolean var7 = this.ignoreTick(par1World, par2, par3, par4, var6); 244 245 if (var7) 246 { 247 par1World.scheduleBlockUpdate(par2, par3, par4, this.blockID, 1); 248 } 249 } 250 251 /** 252 * Called whenever the block is added into the world. Args: world, x, y, z 253 */ 254 public void onBlockAdded(World par1World, int par2, int par3, int par4) 255 { 256 par1World.notifyBlocksOfNeighborChange(par2 + 1, par3, par4, this.blockID); 257 par1World.notifyBlocksOfNeighborChange(par2 - 1, par3, par4, this.blockID); 258 par1World.notifyBlocksOfNeighborChange(par2, par3, par4 + 1, this.blockID); 259 par1World.notifyBlocksOfNeighborChange(par2, par3, par4 - 1, this.blockID); 260 par1World.notifyBlocksOfNeighborChange(par2, par3 - 1, par4, this.blockID); 261 par1World.notifyBlocksOfNeighborChange(par2, par3 + 1, par4, this.blockID); 262 } 263 264 /** 265 * Called right before the block is destroyed by a player. Args: world, x, y, z, metaData 266 */ 267 public void onBlockDestroyedByPlayer(World par1World, int par2, int par3, int par4, int par5) 268 { 269 if (this.isRepeaterPowered) 270 { 271 par1World.notifyBlocksOfNeighborChange(par2 + 1, par3, par4, this.blockID); 272 par1World.notifyBlocksOfNeighborChange(par2 - 1, par3, par4, this.blockID); 273 par1World.notifyBlocksOfNeighborChange(par2, par3, par4 + 1, this.blockID); 274 par1World.notifyBlocksOfNeighborChange(par2, par3, par4 - 1, this.blockID); 275 par1World.notifyBlocksOfNeighborChange(par2, par3 - 1, par4, this.blockID); 276 par1World.notifyBlocksOfNeighborChange(par2, par3 + 1, par4, this.blockID); 277 } 278 279 super.onBlockDestroyedByPlayer(par1World, par2, par3, par4, par5); 280 } 281 282 /** 283 * Is this block (a) opaque and (b) a full 1m cube? This determines whether or not to render the shared face of two 284 * adjacent blocks and also whether the player can attach torches, redstone wire, etc to this block. 285 */ 286 public boolean isOpaqueCube() 287 { 288 return false; 289 } 290 291 /** 292 * Returns the ID of the items to drop on destruction. 293 */ 294 public int idDropped(int par1, Random par2Random, int par3) 295 { 296 return Item.redstoneRepeater.shiftedIndex; 297 } 298 299 @SideOnly(Side.CLIENT) 300 301 /** 302 * A randomly called display update to be able to add particles or other items for display 303 */ 304 public void randomDisplayTick(World par1World, int par2, int par3, int par4, Random par5Random) 305 { 306 if (this.isRepeaterPowered) 307 { 308 int var6 = par1World.getBlockMetadata(par2, par3, par4); 309 int var7 = getDirection(var6); 310 double var8 = (double)((float)par2 + 0.5F) + (double)(par5Random.nextFloat() - 0.5F) * 0.2D; 311 double var10 = (double)((float)par3 + 0.4F) + (double)(par5Random.nextFloat() - 0.5F) * 0.2D; 312 double var12 = (double)((float)par4 + 0.5F) + (double)(par5Random.nextFloat() - 0.5F) * 0.2D; 313 double var14 = 0.0D; 314 double var16 = 0.0D; 315 316 if (par5Random.nextInt(2) == 0) 317 { 318 switch (var7) 319 { 320 case 0: 321 var16 = -0.3125D; 322 break; 323 case 1: 324 var14 = 0.3125D; 325 break; 326 case 2: 327 var16 = 0.3125D; 328 break; 329 case 3: 330 var14 = -0.3125D; 331 } 332 } 333 else 334 { 335 int var18 = (var6 & 12) >> 2; 336 337 switch (var7) 338 { 339 case 0: 340 var16 = repeaterTorchOffset[var18]; 341 break; 342 case 1: 343 var14 = -repeaterTorchOffset[var18]; 344 break; 345 case 2: 346 var16 = -repeaterTorchOffset[var18]; 347 break; 348 case 3: 349 var14 = repeaterTorchOffset[var18]; 350 } 351 } 352 353 par1World.spawnParticle("reddust", var8 + var14, var10, var12 + var16, 0.0D, 0.0D, 0.0D); 354 } 355 } 356 357 @SideOnly(Side.CLIENT) 358 359 /** 360 * only called by clickMiddleMouseButton , and passed to inventory.setCurrentItem (along with isCreative) 361 */ 362 public int idPicked(World par1World, int par2, int par3, int par4) 363 { 364 return Item.redstoneRepeater.shiftedIndex; 365 } 366 367 public static boolean func_82524_c(int par0) 368 { 369 return par0 == Block.redstoneRepeaterActive.blockID || par0 == Block.redstoneRepeaterIdle.blockID; 370 } 371 }