001package net.minecraft.entity.item; 002 003import cpw.mods.fml.relauncher.Side; 004import cpw.mods.fml.relauncher.SideOnly; 005import java.util.List; 006import net.minecraft.block.Block; 007import net.minecraft.block.BlockRailBase; 008import net.minecraft.entity.Entity; 009import net.minecraft.entity.EntityLiving; 010import net.minecraft.entity.ai.EntityMinecartMobSpawner; 011import net.minecraft.entity.monster.EntityIronGolem; 012import net.minecraft.entity.player.EntityPlayer; 013import net.minecraft.item.Item; 014import net.minecraft.item.ItemStack; 015import net.minecraft.nbt.NBTTagCompound; 016import net.minecraft.server.MinecraftServer; 017import net.minecraft.server.gui.IUpdatePlayerListBox; 018import net.minecraft.util.AxisAlignedBB; 019import net.minecraft.util.DamageSource; 020import net.minecraft.util.MathHelper; 021import net.minecraft.util.Vec3; 022import net.minecraft.world.World; 023import net.minecraft.world.WorldServer; 024import net.minecraftforge.common.IMinecartCollisionHandler; 025import net.minecraftforge.common.MinecraftForge; 026import net.minecraftforge.event.entity.minecart.MinecartCollisionEvent; 027import net.minecraftforge.event.entity.minecart.MinecartUpdateEvent; 028 029public abstract class EntityMinecart extends Entity 030{ 031 protected boolean isInReverse; 032 protected final IUpdatePlayerListBox field_82344_g; 033 protected String field_94102_c; 034 035 /** Minecart rotational logic matrix */ 036 protected static final int[][][] matrix = new int[][][] {{{0, 0, -1}, {0, 0, 1}}, {{ -1, 0, 0}, {1, 0, 0}}, {{ -1, -1, 0}, {1, 0, 0}}, {{ -1, 0, 0}, {1, -1, 0}}, {{0, 0, -1}, {0, -1, 1}}, {{0, -1, -1}, {0, 0, 1}}, {{0, 0, 1}, {1, 0, 0}}, {{0, 0, 1}, { -1, 0, 0}}, {{0, 0, -1}, { -1, 0, 0}}, {{0, 0, -1}, {1, 0, 0}}}; 037 038 /** appears to be the progress of the turn */ 039 protected int turnProgress; 040 protected double minecartX; 041 protected double minecartY; 042 protected double minecartZ; 043 protected double minecartYaw; 044 protected double minecartPitch; 045 @SideOnly(Side.CLIENT) 046 protected double velocityX; 047 @SideOnly(Side.CLIENT) 048 protected double velocityY; 049 @SideOnly(Side.CLIENT) 050 protected double velocityZ; 051 052 /* Forge: Minecart Compatibility Layer Integration. */ 053 public static float defaultMaxSpeedAirLateral = 0.4f; 054 public static float defaultMaxSpeedAirVertical = -1f; 055 public static double defaultDragAir = 0.94999998807907104D; 056 protected boolean canUseRail = true; 057 protected boolean canBePushed = true; 058 private static IMinecartCollisionHandler collisionHandler = null; 059 060 /* Instance versions of the above physics properties */ 061 private float currentSpeedRail = getMaxCartSpeedOnRail(); 062 protected float maxSpeedAirLateral = defaultMaxSpeedAirLateral; 063 protected float maxSpeedAirVertical = defaultMaxSpeedAirVertical; 064 protected double dragAir = defaultDragAir; 065 066 public EntityMinecart(World par1World) 067 { 068 super(par1World); 069 this.isInReverse = false; 070 this.preventEntitySpawning = true; 071 this.setSize(0.98F, 0.7F); 072 this.yOffset = this.height / 2.0F; 073 this.field_82344_g = par1World != null ? par1World.func_82735_a(this) : null; 074 } 075 076 public static EntityMinecart func_94090_a(World par0World, double par1, double par3, double par5, int par7) 077 { 078 switch (par7) 079 { 080 case 1: 081 return new EntityMinecartChest(par0World, par1, par3, par5); 082 case 2: 083 return new EntityMinecartFurnace(par0World, par1, par3, par5); 084 case 3: 085 return new EntityMinecartTNT(par0World, par1, par3, par5); 086 case 4: 087 return new EntityMinecartMobSpawner(par0World, par1, par3, par5); 088 case 5: 089 return new EntityMinecartHopper(par0World, par1, par3, par5); 090 default: 091 return new EntityMinecartEmpty(par0World, par1, par3, par5); 092 } 093 } 094 095 /** 096 * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to 097 * prevent them from trampling crops 098 */ 099 protected boolean canTriggerWalking() 100 { 101 return false; 102 } 103 104 protected void entityInit() 105 { 106 this.dataWatcher.addObject(17, new Integer(0)); 107 this.dataWatcher.addObject(18, new Integer(1)); 108 this.dataWatcher.addObject(19, new Integer(0)); 109 this.dataWatcher.addObject(20, new Integer(0)); 110 this.dataWatcher.addObject(21, new Integer(6)); 111 this.dataWatcher.addObject(22, Byte.valueOf((byte)0)); 112 } 113 114 /** 115 * Returns a boundingBox used to collide the entity with other entities and blocks. This enables the entity to be 116 * pushable on contact, like boats or minecarts. 117 */ 118 public AxisAlignedBB getCollisionBox(Entity par1Entity) 119 { 120 if (getCollisionHandler() != null) 121 { 122 return getCollisionHandler().getCollisionBox(this, par1Entity); 123 } 124 return par1Entity.canBePushed() ? par1Entity.boundingBox : null; 125 } 126 127 /** 128 * returns the bounding box for this entity 129 */ 130 public AxisAlignedBB getBoundingBox() 131 { 132 if (getCollisionHandler() != null) 133 { 134 return getCollisionHandler().getBoundingBox(this); 135 } 136 return null; 137 } 138 139 /** 140 * Returns true if this entity should push and be pushed by other entities when colliding. 141 */ 142 public boolean canBePushed() 143 { 144 return canBePushed; 145 } 146 147 public EntityMinecart(World par1World, double par2, double par4, double par6) 148 { 149 this(par1World); 150 this.setPosition(par2, par4 + (double)this.yOffset, par6); 151 this.motionX = 0.0D; 152 this.motionY = 0.0D; 153 this.motionZ = 0.0D; 154 this.prevPosX = par2; 155 this.prevPosY = par4; 156 this.prevPosZ = par6; 157 } 158 159 /** 160 * Returns the Y offset from the entity's position for any entity riding this one. 161 */ 162 public double getMountedYOffset() 163 { 164 return (double)this.height * 0.0D - 0.30000001192092896D; 165 } 166 167 /** 168 * Called when the entity is attacked. 169 */ 170 public boolean attackEntityFrom(DamageSource par1DamageSource, int par2) 171 { 172 if (!this.worldObj.isRemote && !this.isDead) 173 { 174 if (this.isEntityInvulnerable()) 175 { 176 return false; 177 } 178 else 179 { 180 this.setRollingDirection(-this.getRollingDirection()); 181 this.setRollingAmplitude(10); 182 this.setBeenAttacked(); 183 this.setDamage(this.getDamage() + par2 * 10); 184 boolean flag = par1DamageSource.getEntity() instanceof EntityPlayer && ((EntityPlayer)par1DamageSource.getEntity()).capabilities.isCreativeMode; 185 186 if (flag || this.getDamage() > 40) 187 { 188 if (this.riddenByEntity != null) 189 { 190 this.riddenByEntity.mountEntity(this); 191 } 192 193 if (flag && !this.func_94042_c()) 194 { 195 this.setDead(); 196 } 197 else 198 { 199 this.func_94095_a(par1DamageSource); 200 } 201 } 202 203 return true; 204 } 205 } 206 else 207 { 208 return true; 209 } 210 } 211 212 public void func_94095_a(DamageSource par1DamageSource) 213 { 214 this.setDead(); 215 ItemStack itemstack = new ItemStack(Item.minecartEmpty, 1); 216 217 if (this.field_94102_c != null) 218 { 219 itemstack.setItemName(this.field_94102_c); 220 } 221 222 this.entityDropItem(itemstack, 0.0F); 223 } 224 225 @SideOnly(Side.CLIENT) 226 227 /** 228 * Setups the entity to do the hurt animation. Only used by packets in multiplayer. 229 */ 230 public void performHurtAnimation() 231 { 232 this.setRollingDirection(-this.getRollingDirection()); 233 this.setRollingAmplitude(10); 234 this.setDamage(this.getDamage() + this.getDamage() * 10); 235 } 236 237 /** 238 * Returns true if other Entities should be prevented from moving through this Entity. 239 */ 240 public boolean canBeCollidedWith() 241 { 242 return !this.isDead; 243 } 244 245 /** 246 * Will get destroyed next tick. 247 */ 248 public void setDead() 249 { 250 super.setDead(); 251 252 if (this.field_82344_g != null) 253 { 254 this.field_82344_g.update(); 255 } 256 } 257 258 /** 259 * Called to update the entity's position/logic. 260 */ 261 public void onUpdate() 262 { 263 if (this.field_82344_g != null) 264 { 265 this.field_82344_g.update(); 266 } 267 268 if (this.getRollingAmplitude() > 0) 269 { 270 this.setRollingAmplitude(this.getRollingAmplitude() - 1); 271 } 272 273 if (this.getDamage() > 0) 274 { 275 this.setDamage(this.getDamage() - 1); 276 } 277 278 if (this.posY < -64.0D) 279 { 280 this.kill(); 281 } 282 283 int i; 284 285 if (!this.worldObj.isRemote && this.worldObj instanceof WorldServer) 286 { 287 this.worldObj.theProfiler.startSection("portal"); 288 MinecraftServer minecraftserver = ((WorldServer)this.worldObj).getMinecraftServer(); 289 i = this.getMaxInPortalTime(); 290 291 if (this.inPortal) 292 { 293 if (minecraftserver.getAllowNether()) 294 { 295 if (this.ridingEntity == null && this.timeInPortal++ >= i) 296 { 297 this.timeInPortal = i; 298 this.timeUntilPortal = this.getPortalCooldown(); 299 byte b0; 300 301 if (this.worldObj.provider.dimensionId == -1) 302 { 303 b0 = 0; 304 } 305 else 306 { 307 b0 = -1; 308 } 309 310 this.travelToDimension(b0); 311 } 312 313 this.inPortal = false; 314 } 315 } 316 else 317 { 318 if (this.timeInPortal > 0) 319 { 320 this.timeInPortal -= 4; 321 } 322 323 if (this.timeInPortal < 0) 324 { 325 this.timeInPortal = 0; 326 } 327 } 328 329 if (this.timeUntilPortal > 0) 330 { 331 --this.timeUntilPortal; 332 } 333 334 this.worldObj.theProfiler.endSection(); 335 } 336 337 if (this.worldObj.isRemote) 338 { 339 if (this.turnProgress > 0) 340 { 341 double d0 = this.posX + (this.minecartX - this.posX) / (double)this.turnProgress; 342 double d1 = this.posY + (this.minecartY - this.posY) / (double)this.turnProgress; 343 double d2 = this.posZ + (this.minecartZ - this.posZ) / (double)this.turnProgress; 344 double d3 = MathHelper.wrapAngleTo180_double(this.minecartYaw - (double)this.rotationYaw); 345 this.rotationYaw = (float)((double)this.rotationYaw + d3 / (double)this.turnProgress); 346 this.rotationPitch = (float)((double)this.rotationPitch + (this.minecartPitch - (double)this.rotationPitch) / (double)this.turnProgress); 347 --this.turnProgress; 348 this.setPosition(d0, d1, d2); 349 this.setRotation(this.rotationYaw, this.rotationPitch); 350 } 351 else 352 { 353 this.setPosition(this.posX, this.posY, this.posZ); 354 this.setRotation(this.rotationYaw, this.rotationPitch); 355 } 356 } 357 else 358 { 359 this.prevPosX = this.posX; 360 this.prevPosY = this.posY; 361 this.prevPosZ = this.posZ; 362 this.motionY -= 0.03999999910593033D; 363 int j = MathHelper.floor_double(this.posX); 364 i = MathHelper.floor_double(this.posY); 365 int k = MathHelper.floor_double(this.posZ); 366 367 if (BlockRailBase.isRailBlockAt(this.worldObj, j, i - 1, k)) 368 { 369 --i; 370 } 371 372 double d4 = 0.4D; 373 double d5 = 0.0078125D; 374 int l = this.worldObj.getBlockId(j, i, k); 375 376 if (canUseRail() && BlockRailBase.isRailBlock(l)) 377 { 378 BlockRailBase rail = (BlockRailBase)Block.blocksList[l]; 379 float railMaxSpeed = rail.getRailMaxSpeed(worldObj, this, j, i, k); 380 double maxSpeed = Math.min(railMaxSpeed, getCurrentCartSpeedCapOnRail()); 381 int i1 = rail.getBasicRailMetadata(worldObj, this, j, i, k); 382 this.func_94091_a(j, i, k, maxSpeed, getSlopeAdjustment(), l, i1); 383 384 if (l == Block.field_94337_cv.blockID) 385 { 386 this.func_96095_a(j, i, k, (i1 & 8) != 0); 387 } 388 } 389 else 390 { 391 this.func_94088_b(onGround ? d4 : getMaxSpeedAirLateral()); 392 } 393 394 this.doBlockCollisions(); 395 this.rotationPitch = 0.0F; 396 double d6 = this.prevPosX - this.posX; 397 double d7 = this.prevPosZ - this.posZ; 398 399 if (d6 * d6 + d7 * d7 > 0.001D) 400 { 401 this.rotationYaw = (float)(Math.atan2(d7, d6) * 180.0D / Math.PI); 402 403 if (this.isInReverse) 404 { 405 this.rotationYaw += 180.0F; 406 } 407 } 408 409 double d8 = (double)MathHelper.wrapAngleTo180_float(this.rotationYaw - this.prevRotationYaw); 410 411 if (d8 < -170.0D || d8 >= 170.0D) 412 { 413 this.rotationYaw += 180.0F; 414 this.isInReverse = !this.isInReverse; 415 } 416 417 this.setRotation(this.rotationYaw, this.rotationPitch); 418 419 AxisAlignedBB box; 420 if (getCollisionHandler() != null) 421 { 422 box = getCollisionHandler().getMinecartCollisionBox(this); 423 } 424 else 425 { 426 box = boundingBox.expand(0.2D, 0.0D, 0.2D); 427 } 428 429 List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, box); 430 431 if (list != null && !list.isEmpty()) 432 { 433 for (int j1 = 0; j1 < list.size(); ++j1) 434 { 435 Entity entity = (Entity)list.get(j1); 436 437 if (entity != this.riddenByEntity && entity.canBePushed() && entity instanceof EntityMinecart) 438 { 439 entity.applyEntityCollision(this); 440 } 441 } 442 } 443 444 if (this.riddenByEntity != null && this.riddenByEntity.isDead) 445 { 446 if (this.riddenByEntity.ridingEntity == this) 447 { 448 this.riddenByEntity.ridingEntity = null; 449 } 450 451 this.riddenByEntity = null; 452 } 453 454 MinecraftForge.EVENT_BUS.post(new MinecartUpdateEvent(this, j, i, k)); 455 } 456 } 457 458 public void func_96095_a(int par1, int par2, int par3, boolean par4) {} 459 460 protected void func_94088_b(double par1) 461 { 462 if (this.motionX < -par1) 463 { 464 this.motionX = -par1; 465 } 466 467 if (this.motionX > par1) 468 { 469 this.motionX = par1; 470 } 471 472 if (this.motionZ < -par1) 473 { 474 this.motionZ = -par1; 475 } 476 477 if (this.motionZ > par1) 478 { 479 this.motionZ = par1; 480 } 481 482 double moveY = motionY; 483 if(getMaxSpeedAirVertical() > 0 && motionY > getMaxSpeedAirVertical()) 484 { 485 moveY = getMaxSpeedAirVertical(); 486 if(Math.abs(motionX) < 0.3f && Math.abs(motionZ) < 0.3f) 487 { 488 moveY = 0.15f; 489 motionY = moveY; 490 } 491 } 492 493 if (this.onGround) 494 { 495 this.motionX *= 0.5D; 496 this.motionY *= 0.5D; 497 this.motionZ *= 0.5D; 498 } 499 500 this.moveEntity(this.motionX, moveY, this.motionZ); 501 502 if (!this.onGround) 503 { 504 this.motionX *= getDragAir(); 505 this.motionY *= getDragAir(); 506 this.motionZ *= getDragAir(); 507 } 508 } 509 510 protected void func_94091_a(int par1, int par2, int par3, double par4, double par6, int par8, int par9) 511 { 512 this.fallDistance = 0.0F; 513 Vec3 vec3 = this.func_70489_a(this.posX, this.posY, this.posZ); 514 this.posY = (double)par2; 515 boolean flag = false; 516 boolean flag1 = false; 517 518 if (par8 == Block.railPowered.blockID) 519 { 520 flag = (worldObj.getBlockMetadata(par1, par2, par3) & 8) != 0; 521 flag1 = !flag; 522 } 523 524 if (((BlockRailBase)Block.blocksList[par8]).isPowered()) 525 { 526 par9 &= 7; 527 } 528 529 if (par9 >= 2 && par9 <= 5) 530 { 531 this.posY = (double)(par2 + 1); 532 } 533 534 if (par9 == 2) 535 { 536 this.motionX -= par6; 537 } 538 539 if (par9 == 3) 540 { 541 this.motionX += par6; 542 } 543 544 if (par9 == 4) 545 { 546 this.motionZ += par6; 547 } 548 549 if (par9 == 5) 550 { 551 this.motionZ -= par6; 552 } 553 554 int[][] aint = matrix[par9]; 555 double d2 = (double)(aint[1][0] - aint[0][0]); 556 double d3 = (double)(aint[1][2] - aint[0][2]); 557 double d4 = Math.sqrt(d2 * d2 + d3 * d3); 558 double d5 = this.motionX * d2 + this.motionZ * d3; 559 560 if (d5 < 0.0D) 561 { 562 d2 = -d2; 563 d3 = -d3; 564 } 565 566 double d6 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 567 568 if (d6 > 2.0D) 569 { 570 d6 = 2.0D; 571 } 572 573 this.motionX = d6 * d2 / d4; 574 this.motionZ = d6 * d3 / d4; 575 double d7; 576 double d8; 577 578 if (this.riddenByEntity != null) 579 { 580 d7 = this.riddenByEntity.motionX * this.riddenByEntity.motionX + this.riddenByEntity.motionZ * this.riddenByEntity.motionZ; 581 d8 = this.motionX * this.motionX + this.motionZ * this.motionZ; 582 583 if (d7 > 1.0E-4D && d8 < 0.01D) 584 { 585 this.motionX += this.riddenByEntity.motionX * 0.1D; 586 this.motionZ += this.riddenByEntity.motionZ * 0.1D; 587 flag1 = false; 588 } 589 } 590 591 if (flag1 && shouldDoRailFunctions()) 592 { 593 d7 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 594 595 if (d7 < 0.03D) 596 { 597 this.motionX *= 0.0D; 598 this.motionY *= 0.0D; 599 this.motionZ *= 0.0D; 600 } 601 else 602 { 603 this.motionX *= 0.5D; 604 this.motionY *= 0.0D; 605 this.motionZ *= 0.5D; 606 } 607 } 608 609 d7 = 0.0D; 610 d8 = (double)par1 + 0.5D + (double)aint[0][0] * 0.5D; 611 double d9 = (double)par3 + 0.5D + (double)aint[0][2] * 0.5D; 612 double d10 = (double)par1 + 0.5D + (double)aint[1][0] * 0.5D; 613 double d11 = (double)par3 + 0.5D + (double)aint[1][2] * 0.5D; 614 d2 = d10 - d8; 615 d3 = d11 - d9; 616 double d12; 617 double d13; 618 619 if (d2 == 0.0D) 620 { 621 this.posX = (double)par1 + 0.5D; 622 d7 = this.posZ - (double)par3; 623 } 624 else if (d3 == 0.0D) 625 { 626 this.posZ = (double)par3 + 0.5D; 627 d7 = this.posX - (double)par1; 628 } 629 else 630 { 631 d12 = this.posX - d8; 632 d13 = this.posZ - d9; 633 d7 = (d12 * d2 + d13 * d3) * 2.0D; 634 } 635 636 this.posX = d8 + d2 * d7; 637 this.posZ = d9 + d3 * d7; 638 this.setPosition(this.posX, this.posY + (double)this.yOffset, this.posZ); 639 640 moveMinecartOnRail(par1, par2, par3, par4); 641 642 if (aint[0][1] != 0 && MathHelper.floor_double(this.posX) - par1 == aint[0][0] && MathHelper.floor_double(this.posZ) - par3 == aint[0][2]) 643 { 644 this.setPosition(this.posX, this.posY + (double)aint[0][1], this.posZ); 645 } 646 else if (aint[1][1] != 0 && MathHelper.floor_double(this.posX) - par1 == aint[1][0] && MathHelper.floor_double(this.posZ) - par3 == aint[1][2]) 647 { 648 this.setPosition(this.posX, this.posY + (double)aint[1][1], this.posZ); 649 } 650 651 this.func_94101_h(); 652 Vec3 vec31 = this.func_70489_a(this.posX, this.posY, this.posZ); 653 654 if (vec31 != null && vec3 != null) 655 { 656 double d14 = (vec3.yCoord - vec31.yCoord) * 0.05D; 657 d6 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 658 659 if (d6 > 0.0D) 660 { 661 this.motionX = this.motionX / d6 * (d6 + d14); 662 this.motionZ = this.motionZ / d6 * (d6 + d14); 663 } 664 665 this.setPosition(this.posX, vec31.yCoord, this.posZ); 666 } 667 668 int j1 = MathHelper.floor_double(this.posX); 669 int k1 = MathHelper.floor_double(this.posZ); 670 671 if (j1 != par1 || k1 != par3) 672 { 673 d6 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 674 this.motionX = d6 * (double)(j1 - par1); 675 this.motionZ = d6 * (double)(k1 - par3); 676 } 677 678 if(shouldDoRailFunctions()) 679 { 680 ((BlockRailBase)Block.blocksList[par8]).onMinecartPass(worldObj, this, par1, par2, par3); 681 } 682 683 if (flag && shouldDoRailFunctions()) 684 { 685 double d15 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 686 687 if (d15 > 0.01D) 688 { 689 double d16 = 0.06D; 690 this.motionX += this.motionX / d15 * d16; 691 this.motionZ += this.motionZ / d15 * d16; 692 } 693 else if (par9 == 1) 694 { 695 if (this.worldObj.isBlockNormalCube(par1 - 1, par2, par3)) 696 { 697 this.motionX = 0.02D; 698 } 699 else if (this.worldObj.isBlockNormalCube(par1 + 1, par2, par3)) 700 { 701 this.motionX = -0.02D; 702 } 703 } 704 else if (par9 == 0) 705 { 706 if (this.worldObj.isBlockNormalCube(par1, par2, par3 - 1)) 707 { 708 this.motionZ = 0.02D; 709 } 710 else if (this.worldObj.isBlockNormalCube(par1, par2, par3 + 1)) 711 { 712 this.motionZ = -0.02D; 713 } 714 } 715 } 716 } 717 718 protected void func_94101_h() 719 { 720 if (this.riddenByEntity != null) 721 { 722 this.motionX *= 0.996999979019165D; 723 this.motionY *= 0.0D; 724 this.motionZ *= 0.996999979019165D; 725 } 726 else 727 { 728 this.motionX *= 0.9599999785423279D; 729 this.motionY *= 0.0D; 730 this.motionZ *= 0.9599999785423279D; 731 } 732 } 733 734 @SideOnly(Side.CLIENT) 735 public Vec3 func_70495_a(double par1, double par3, double par5, double par7) 736 { 737 int i = MathHelper.floor_double(par1); 738 int j = MathHelper.floor_double(par3); 739 int k = MathHelper.floor_double(par5); 740 741 if (BlockRailBase.isRailBlockAt(this.worldObj, i, j - 1, k)) 742 { 743 --j; 744 } 745 746 int l = this.worldObj.getBlockId(i, j, k); 747 748 if (!BlockRailBase.isRailBlock(l)) 749 { 750 return null; 751 } 752 else 753 { 754 int i1 = ((BlockRailBase)Block.blocksList[l]).getBasicRailMetadata(worldObj, this, i, j, k); 755 756 par3 = (double)j; 757 758 if (i1 >= 2 && i1 <= 5) 759 { 760 par3 = (double)(j + 1); 761 } 762 763 int[][] aint = matrix[i1]; 764 double d4 = (double)(aint[1][0] - aint[0][0]); 765 double d5 = (double)(aint[1][2] - aint[0][2]); 766 double d6 = Math.sqrt(d4 * d4 + d5 * d5); 767 d4 /= d6; 768 d5 /= d6; 769 par1 += d4 * par7; 770 par5 += d5 * par7; 771 772 if (aint[0][1] != 0 && MathHelper.floor_double(par1) - i == aint[0][0] && MathHelper.floor_double(par5) - k == aint[0][2]) 773 { 774 par3 += (double)aint[0][1]; 775 } 776 else if (aint[1][1] != 0 && MathHelper.floor_double(par1) - i == aint[1][0] && MathHelper.floor_double(par5) - k == aint[1][2]) 777 { 778 par3 += (double)aint[1][1]; 779 } 780 781 return this.func_70489_a(par1, par3, par5); 782 } 783 } 784 785 public Vec3 func_70489_a(double par1, double par3, double par5) 786 { 787 int i = MathHelper.floor_double(par1); 788 int j = MathHelper.floor_double(par3); 789 int k = MathHelper.floor_double(par5); 790 791 if (BlockRailBase.isRailBlockAt(this.worldObj, i, j - 1, k)) 792 { 793 --j; 794 } 795 796 int l = this.worldObj.getBlockId(i, j, k); 797 798 if (BlockRailBase.isRailBlock(l)) 799 { 800 int i1 = ((BlockRailBase)Block.blocksList[l]).getBasicRailMetadata(worldObj, this, i, j, k); 801 par3 = (double)j; 802 803 if (i1 >= 2 && i1 <= 5) 804 { 805 par3 = (double)(j + 1); 806 } 807 808 int[][] aint = matrix[i1]; 809 double d3 = 0.0D; 810 double d4 = (double)i + 0.5D + (double)aint[0][0] * 0.5D; 811 double d5 = (double)j + 0.5D + (double)aint[0][1] * 0.5D; 812 double d6 = (double)k + 0.5D + (double)aint[0][2] * 0.5D; 813 double d7 = (double)i + 0.5D + (double)aint[1][0] * 0.5D; 814 double d8 = (double)j + 0.5D + (double)aint[1][1] * 0.5D; 815 double d9 = (double)k + 0.5D + (double)aint[1][2] * 0.5D; 816 double d10 = d7 - d4; 817 double d11 = (d8 - d5) * 2.0D; 818 double d12 = d9 - d6; 819 820 if (d10 == 0.0D) 821 { 822 par1 = (double)i + 0.5D; 823 d3 = par5 - (double)k; 824 } 825 else if (d12 == 0.0D) 826 { 827 par5 = (double)k + 0.5D; 828 d3 = par1 - (double)i; 829 } 830 else 831 { 832 double d13 = par1 - d4; 833 double d14 = par5 - d6; 834 d3 = (d13 * d10 + d14 * d12) * 2.0D; 835 } 836 837 par1 = d4 + d10 * d3; 838 par3 = d5 + d11 * d3; 839 par5 = d6 + d12 * d3; 840 841 if (d11 < 0.0D) 842 { 843 ++par3; 844 } 845 846 if (d11 > 0.0D) 847 { 848 par3 += 0.5D; 849 } 850 851 return this.worldObj.getWorldVec3Pool().getVecFromPool(par1, par3, par5); 852 } 853 else 854 { 855 return null; 856 } 857 } 858 859 /** 860 * (abstract) Protected helper method to read subclass entity data from NBT. 861 */ 862 protected void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) 863 { 864 if (par1NBTTagCompound.getBoolean("CustomDisplayTile")) 865 { 866 this.func_94094_j(par1NBTTagCompound.getInteger("DisplayTile")); 867 this.func_94092_k(par1NBTTagCompound.getInteger("DisplayData")); 868 this.func_94086_l(par1NBTTagCompound.getInteger("DisplayOffset")); 869 } 870 871 if (par1NBTTagCompound.hasKey("CustomName") && par1NBTTagCompound.getString("CustomName").length() > 0) 872 { 873 this.field_94102_c = par1NBTTagCompound.getString("CustomName"); 874 } 875 } 876 877 /** 878 * (abstract) Protected helper method to write subclass entity data to NBT. 879 */ 880 protected void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) 881 { 882 if (this.func_94100_s()) 883 { 884 par1NBTTagCompound.setBoolean("CustomDisplayTile", true); 885 par1NBTTagCompound.setInteger("DisplayTile", this.func_94089_m() == null ? 0 : this.func_94089_m().blockID); 886 par1NBTTagCompound.setInteger("DisplayData", this.func_94098_o()); 887 par1NBTTagCompound.setInteger("DisplayOffset", this.func_94099_q()); 888 } 889 890 if (this.field_94102_c != null && this.field_94102_c.length() > 0) 891 { 892 par1NBTTagCompound.setString("CustomName", this.field_94102_c); 893 } 894 } 895 896 @SideOnly(Side.CLIENT) 897 public float getShadowSize() 898 { 899 return 0.0F; 900 } 901 902 /** 903 * Applies a velocity to each of the entities pushing them away from each other. Args: entity 904 */ 905 public void applyEntityCollision(Entity par1Entity) 906 { 907 MinecraftForge.EVENT_BUS.post(new MinecartCollisionEvent(this, par1Entity)); 908 if (getCollisionHandler() != null) 909 { 910 getCollisionHandler().onEntityCollision(this, par1Entity); 911 return; 912 } 913 if (!this.worldObj.isRemote) 914 { 915 if (par1Entity != this.riddenByEntity) 916 { 917 if (par1Entity instanceof EntityLiving && !(par1Entity instanceof EntityPlayer) && !(par1Entity instanceof EntityIronGolem) && canBeRidden() && this.motionX * this.motionX + this.motionZ * this.motionZ > 0.01D && this.riddenByEntity == null && par1Entity.ridingEntity == null) 918 { 919 par1Entity.mountEntity(this); 920 } 921 922 double d0 = par1Entity.posX - this.posX; 923 double d1 = par1Entity.posZ - this.posZ; 924 double d2 = d0 * d0 + d1 * d1; 925 926 if (d2 >= 9.999999747378752E-5D) 927 { 928 d2 = (double)MathHelper.sqrt_double(d2); 929 d0 /= d2; 930 d1 /= d2; 931 double d3 = 1.0D / d2; 932 933 if (d3 > 1.0D) 934 { 935 d3 = 1.0D; 936 } 937 938 d0 *= d3; 939 d1 *= d3; 940 d0 *= 0.10000000149011612D; 941 d1 *= 0.10000000149011612D; 942 d0 *= (double)(1.0F - this.entityCollisionReduction); 943 d1 *= (double)(1.0F - this.entityCollisionReduction); 944 d0 *= 0.5D; 945 d1 *= 0.5D; 946 947 if (par1Entity instanceof EntityMinecart) 948 { 949 double d4 = par1Entity.posX - this.posX; 950 double d5 = par1Entity.posZ - this.posZ; 951 Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(d4, 0.0D, d5).normalize(); 952 Vec3 vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool((double)MathHelper.cos(this.rotationYaw * (float)Math.PI / 180.0F), 0.0D, (double)MathHelper.sin(this.rotationYaw * (float)Math.PI / 180.0F)).normalize(); 953 double d6 = Math.abs(vec3.dotProduct(vec31)); 954 955 if (d6 < 0.800000011920929D) 956 { 957 return; 958 } 959 960 double d7 = par1Entity.motionX + this.motionX; 961 double d8 = par1Entity.motionZ + this.motionZ; 962 963 if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart()) 964 { 965 this.motionX *= 0.20000000298023224D; 966 this.motionZ *= 0.20000000298023224D; 967 this.addVelocity(par1Entity.motionX - d0, 0.0D, par1Entity.motionZ - d1); 968 par1Entity.motionX *= 0.949999988079071D; 969 par1Entity.motionZ *= 0.949999988079071D; 970 } 971 else if (!((EntityMinecart)par1Entity).isPoweredCart() && isPoweredCart()) 972 { 973 par1Entity.motionX *= 0.20000000298023224D; 974 par1Entity.motionZ *= 0.20000000298023224D; 975 par1Entity.addVelocity(this.motionX + d0, 0.0D, this.motionZ + d1); 976 this.motionX *= 0.949999988079071D; 977 this.motionZ *= 0.949999988079071D; 978 } 979 else 980 { 981 d7 /= 2.0D; 982 d8 /= 2.0D; 983 this.motionX *= 0.20000000298023224D; 984 this.motionZ *= 0.20000000298023224D; 985 this.addVelocity(d7 - d0, 0.0D, d8 - d1); 986 par1Entity.motionX *= 0.20000000298023224D; 987 par1Entity.motionZ *= 0.20000000298023224D; 988 par1Entity.addVelocity(d7 + d0, 0.0D, d8 + d1); 989 } 990 } 991 else 992 { 993 this.addVelocity(-d0, 0.0D, -d1); 994 par1Entity.addVelocity(d0 / 4.0D, 0.0D, d1 / 4.0D); 995 } 996 } 997 } 998 } 999 } 1000 1001 @SideOnly(Side.CLIENT) 1002 1003 /** 1004 * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX, 1005 * posY, posZ, yaw, pitch 1006 */ 1007 public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9) 1008 { 1009 this.minecartX = par1; 1010 this.minecartY = par3; 1011 this.minecartZ = par5; 1012 this.minecartYaw = (double)par7; 1013 this.minecartPitch = (double)par8; 1014 this.turnProgress = par9 + 2; 1015 this.motionX = this.velocityX; 1016 this.motionY = this.velocityY; 1017 this.motionZ = this.velocityZ; 1018 } 1019 1020 @SideOnly(Side.CLIENT) 1021 1022 /** 1023 * Sets the velocity to the args. Args: x, y, z 1024 */ 1025 public void setVelocity(double par1, double par3, double par5) 1026 { 1027 this.velocityX = this.motionX = par1; 1028 this.velocityY = this.motionY = par3; 1029 this.velocityZ = this.motionZ = par5; 1030 } 1031 1032 /** 1033 * Sets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over 1034 * 40. 1035 */ 1036 public void setDamage(int par1) 1037 { 1038 this.dataWatcher.updateObject(19, Integer.valueOf(par1)); 1039 } 1040 1041 /** 1042 * Gets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over 1043 * 40. 1044 */ 1045 public int getDamage() 1046 { 1047 return this.dataWatcher.getWatchableObjectInt(19); 1048 } 1049 1050 /** 1051 * Sets the rolling amplitude the cart rolls while being attacked. 1052 */ 1053 public void setRollingAmplitude(int par1) 1054 { 1055 this.dataWatcher.updateObject(17, Integer.valueOf(par1)); 1056 } 1057 1058 /** 1059 * Gets the rolling amplitude the cart rolls while being attacked. 1060 */ 1061 public int getRollingAmplitude() 1062 { 1063 return this.dataWatcher.getWatchableObjectInt(17); 1064 } 1065 1066 /** 1067 * Sets the rolling direction the cart rolls while being attacked. Can be 1 or -1. 1068 */ 1069 public void setRollingDirection(int par1) 1070 { 1071 this.dataWatcher.updateObject(18, Integer.valueOf(par1)); 1072 } 1073 1074 /** 1075 * Gets the rolling direction the cart rolls while being attacked. Can be 1 or -1. 1076 */ 1077 public int getRollingDirection() 1078 { 1079 return this.dataWatcher.getWatchableObjectInt(18); 1080 } 1081 1082 public abstract int func_94087_l(); 1083 1084 public Block func_94089_m() 1085 { 1086 if (!this.func_94100_s()) 1087 { 1088 return this.func_94093_n(); 1089 } 1090 else 1091 { 1092 int i = this.getDataWatcher().getWatchableObjectInt(20) & 65535; 1093 return i > 0 && i < Block.blocksList.length ? Block.blocksList[i] : null; 1094 } 1095 } 1096 1097 public Block func_94093_n() 1098 { 1099 return null; 1100 } 1101 1102 public int func_94098_o() 1103 { 1104 return !this.func_94100_s() ? this.func_94097_p() : this.getDataWatcher().getWatchableObjectInt(20) >> 16; 1105 } 1106 1107 public int func_94097_p() 1108 { 1109 return 0; 1110 } 1111 1112 public int func_94099_q() 1113 { 1114 return !this.func_94100_s() ? this.func_94085_r() : this.getDataWatcher().getWatchableObjectInt(21); 1115 } 1116 1117 public int func_94085_r() 1118 { 1119 return 6; 1120 } 1121 1122 public void func_94094_j(int par1) 1123 { 1124 this.getDataWatcher().updateObject(20, Integer.valueOf(par1 & 65535 | this.func_94098_o() << 16)); 1125 this.func_94096_e(true); 1126 } 1127 1128 public void func_94092_k(int par1) 1129 { 1130 Block block = this.func_94089_m(); 1131 int j = block == null ? 0 : block.blockID; 1132 this.getDataWatcher().updateObject(20, Integer.valueOf(j & 65535 | par1 << 16)); 1133 this.func_94096_e(true); 1134 } 1135 1136 public void func_94086_l(int par1) 1137 { 1138 this.getDataWatcher().updateObject(21, Integer.valueOf(par1)); 1139 this.func_94096_e(true); 1140 } 1141 1142 public boolean func_94100_s() 1143 { 1144 return this.getDataWatcher().getWatchableObjectByte(22) == 1; 1145 } 1146 1147 public void func_94096_e(boolean par1) 1148 { 1149 this.getDataWatcher().updateObject(22, Byte.valueOf((byte)(par1 ? 1 : 0))); 1150 } 1151 1152 public void func_96094_a(String par1Str) 1153 { 1154 this.field_94102_c = par1Str; 1155 } 1156 1157 /** 1158 * Gets the username of the entity. 1159 */ 1160 public String getEntityName() 1161 { 1162 return this.field_94102_c != null ? this.field_94102_c : super.getEntityName(); 1163 } 1164 1165 public boolean func_94042_c() 1166 { 1167 return this.field_94102_c != null; 1168 } 1169 1170 public String func_95999_t() 1171 { 1172 return this.field_94102_c; 1173 } 1174 1175 /** 1176 * Moved to allow overrides. 1177 * This code handles minecart movement and speed capping when on a rail. 1178 */ 1179 public void moveMinecartOnRail(int x, int y, int z, double par4){ 1180 double d12 = this.motionX; 1181 double d13 = this.motionZ; 1182 1183 if (this.riddenByEntity != null) 1184 { 1185 d12 *= 0.75D; 1186 d13 *= 0.75D; 1187 } 1188 1189 if (d12 < -par4) 1190 { 1191 d12 = -par4; 1192 } 1193 1194 if (d12 > par4) 1195 { 1196 d12 = par4; 1197 } 1198 1199 if (d13 < -par4) 1200 { 1201 d13 = -par4; 1202 } 1203 1204 if (d13 > par4) 1205 { 1206 d13 = par4; 1207 } 1208 1209 this.moveEntity(d12, 0.0D, d13); 1210 } 1211 1212 /** 1213 * Gets the current global Minecart Collision handler if none 1214 * is registered, returns null 1215 * @return The collision handler or null 1216 */ 1217 public static IMinecartCollisionHandler getCollisionHandler() 1218 { 1219 return collisionHandler; 1220 } 1221 1222 /** 1223 * Sets the global Minecart Collision handler, overwrites any 1224 * that is currently set. 1225 * @param handler The new handler 1226 */ 1227 public static void setCollisionHandler(IMinecartCollisionHandler handler) 1228 { 1229 collisionHandler = handler; 1230 } 1231 1232 /** 1233 * This function returns an ItemStack that represents this cart. 1234 * This should be an ItemStack that can be used by the player to place the cart, 1235 * but is not necessary the item the cart drops when destroyed. 1236 * @return An ItemStack that can be used to place the cart. 1237 */ 1238 public ItemStack getCartItem() 1239 { 1240 if (this instanceof EntityMinecartChest) 1241 { 1242 return new ItemStack(Item.minecartCrate); 1243 } 1244 else if (this instanceof EntityMinecartTNT) 1245 { 1246 return new ItemStack(Item.field_94582_cb); 1247 } 1248 else if (this instanceof EntityMinecartFurnace) 1249 { 1250 return new ItemStack(Item.minecartPowered); 1251 } 1252 else if (this instanceof EntityMinecartHopper) 1253 { 1254 return new ItemStack(Item.field_96600_cc); 1255 } 1256 return new ItemStack(Item.minecartEmpty); 1257 } 1258 1259 /** 1260 * Returns true if this cart can currently use rails. 1261 * This function is mainly used to gracefully detach a minecart from a rail. 1262 * @return True if the minecart can use rails. 1263 */ 1264 public boolean canUseRail() 1265 { 1266 return canUseRail; 1267 } 1268 1269 /** 1270 * Set whether the minecart can use rails. 1271 * This function is mainly used to gracefully detach a minecart from a rail. 1272 * @param use Whether the minecart can currently use rails. 1273 */ 1274 public void setCanUseRail(boolean use) 1275 { 1276 canUseRail = use; 1277 } 1278 1279 /** 1280 * Return false if this cart should not call onMinecartPass() and should ignore Powered Rails. 1281 * @return True if this cart should call onMinecartPass(). 1282 */ 1283 public boolean shouldDoRailFunctions() 1284 { 1285 return true; 1286 } 1287 1288 /** 1289 * Returns true if this cart is self propelled. 1290 * @return True if powered. 1291 */ 1292 public boolean isPoweredCart() 1293 { 1294 return func_94087_l() == 2; 1295 } 1296 1297 /** 1298 * Returns true if this cart can be ridden by an Entity. 1299 * @return True if this cart can be ridden. 1300 */ 1301 public boolean canBeRidden() 1302 { 1303 if(this instanceof EntityMinecartEmpty) 1304 { 1305 return true; 1306 } 1307 return false; 1308 } 1309 1310 /** 1311 * Getters/setters for physics variables 1312 */ 1313 1314 /** 1315 * Returns the carts max speed when traveling on rails. Carts going faster 1316 * than 1.1 cause issues with chunk loading. Carts cant traverse slopes or 1317 * corners at greater than 0.5 - 0.6. This value is compared with the rails 1318 * max speed and the carts current speed cap to determine the carts current 1319 * max speed. A normal rail's max speed is 0.4. 1320 * 1321 * @return Carts max speed. 1322 */ 1323 public float getMaxCartSpeedOnRail() 1324 { 1325 return 1.2f; 1326 } 1327 1328 /** 1329 * Returns the current speed cap for the cart when traveling on rails. This 1330 * functions differs from getMaxCartSpeedOnRail() in that it controls 1331 * current movement and cannot be overridden. The value however can never be 1332 * higher than getMaxCartSpeedOnRail(). 1333 * 1334 * @return 1335 */ 1336 public final float getCurrentCartSpeedCapOnRail() 1337 { 1338 return currentSpeedRail; 1339 } 1340 1341 public final void setCurrentCartSpeedCapOnRail(float value) 1342 { 1343 value = Math.min(value, getMaxCartSpeedOnRail()); 1344 currentSpeedRail = value; 1345 } 1346 1347 public float getMaxSpeedAirLateral() 1348 { 1349 return maxSpeedAirLateral; 1350 } 1351 1352 public void setMaxSpeedAirLateral(float value) 1353 { 1354 maxSpeedAirLateral = value; 1355 } 1356 1357 public float getMaxSpeedAirVertical() 1358 { 1359 return maxSpeedAirVertical; 1360 } 1361 1362 public void setMaxSpeedAirVertical(float value) 1363 { 1364 maxSpeedAirVertical = value; 1365 } 1366 1367 public double getDragAir() 1368 { 1369 return dragAir; 1370 } 1371 1372 public void setDragAir(double value) 1373 { 1374 dragAir = value; 1375 } 1376 1377 public double getSlopeAdjustment() 1378 { 1379 return 0.0078125D; 1380 } 1381}