001package net.minecraft.entity.item; 002 003import cpw.mods.fml.relauncher.Side; 004import cpw.mods.fml.relauncher.SideOnly; 005 006import java.util.ArrayList; 007import java.util.List; 008import net.minecraft.block.Block; 009import net.minecraft.block.BlockRail; 010import net.minecraft.entity.Entity; 011import net.minecraft.entity.EntityLiving; 012import net.minecraft.entity.monster.EntityIronGolem; 013import net.minecraft.entity.player.EntityPlayer; 014import net.minecraft.inventory.IInventory; 015import net.minecraft.item.Item; 016import net.minecraft.item.ItemStack; 017import net.minecraft.nbt.NBTTagCompound; 018import net.minecraft.nbt.NBTTagList; 019import net.minecraft.server.MinecraftServer; 020import net.minecraft.server.gui.IUpdatePlayerListBox; 021import net.minecraft.util.AxisAlignedBB; 022import net.minecraft.util.DamageSource; 023import net.minecraft.util.MathHelper; 024import net.minecraft.util.Vec3; 025import net.minecraft.world.World; 026import net.minecraft.world.WorldServer; 027 028import net.minecraftforge.common.IMinecartCollisionHandler; 029import net.minecraftforge.common.MinecartRegistry; 030import net.minecraftforge.common.MinecraftForge; 031import net.minecraftforge.event.entity.minecart.*; 032 033public class EntityMinecart extends Entity implements IInventory 034{ 035 /** Array of item stacks stored in minecart (for storage minecarts). */ 036 protected ItemStack[] cargoItems; 037 protected int fuel; 038 protected boolean isInReverse; 039 040 /** The type of minecart, 2 for powered, 1 for storage. */ 041 public int minecartType; 042 public double pushX; 043 public double pushZ; 044 protected final IUpdatePlayerListBox field_82344_g; 045 protected boolean field_82345_h; 046 047 /** Minecart rotational logic matrix */ 048 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}}}; 049 050 /** appears to be the progress of the turn */ 051 protected int turnProgress; 052 protected double minecartX; 053 protected double minecartY; 054 protected double minecartZ; 055 protected double minecartYaw; 056 protected double minecartPitch; 057 @SideOnly(Side.CLIENT) 058 protected double velocityX; 059 @SideOnly(Side.CLIENT) 060 protected double velocityY; 061 @SideOnly(Side.CLIENT) 062 protected double velocityZ; 063 064 /* Forge: Minecart Compatibility Layer Integration. */ 065 public static float defaultMaxSpeedRail = 0.4f; 066 public static float defaultMaxSpeedGround = 0.4f; 067 public static float defaultMaxSpeedAirLateral = 0.4f; 068 public static float defaultMaxSpeedAirVertical = -1f; 069 public static double defaultDragRidden = 0.996999979019165D; 070 public static double defaultDragEmpty = 0.9599999785423279D; 071 public static double defaultDragAir = 0.94999998807907104D; 072 protected boolean canUseRail = true; 073 protected boolean canBePushed = true; 074 private static IMinecartCollisionHandler collisionHandler = null; 075 076 /* Instance versions of the above physics properties */ 077 protected float maxSpeedRail; 078 protected float maxSpeedGround; 079 protected float maxSpeedAirLateral; 080 protected float maxSpeedAirVertical; 081 protected double dragAir; 082 083 public EntityMinecart(World par1World) 084 { 085 super(par1World); 086 this.cargoItems = new ItemStack[36]; 087 this.fuel = 0; 088 this.isInReverse = false; 089 this.field_82345_h = true; 090 this.preventEntitySpawning = true; 091 this.setSize(0.98F, 0.7F); 092 this.yOffset = this.height / 2.0F; 093 this.field_82344_g = par1World != null ? par1World.func_82735_a(this) : null; 094 095 maxSpeedRail = defaultMaxSpeedRail; 096 maxSpeedGround = defaultMaxSpeedGround; 097 maxSpeedAirLateral = defaultMaxSpeedAirLateral; 098 maxSpeedAirVertical = defaultMaxSpeedAirVertical; 099 dragAir = defaultDragAir; 100 } 101 102 public EntityMinecart(World world, int type) 103 { 104 this(world); 105 minecartType = type; 106 } 107 108 /** 109 * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to 110 * prevent them from trampling crops 111 */ 112 protected boolean canTriggerWalking() 113 { 114 return false; 115 } 116 117 protected void entityInit() 118 { 119 this.dataWatcher.addObject(16, new Byte((byte)0)); 120 this.dataWatcher.addObject(17, new Integer(0)); 121 this.dataWatcher.addObject(18, new Integer(1)); 122 this.dataWatcher.addObject(19, new Integer(0)); 123 } 124 125 /** 126 * Returns a boundingBox used to collide the entity with other entities and blocks. This enables the entity to be 127 * pushable on contact, like boats or minecarts. 128 */ 129 public AxisAlignedBB getCollisionBox(Entity par1Entity) 130 { 131 if (getCollisionHandler() != null) 132 { 133 return getCollisionHandler().getCollisionBox(this, par1Entity); 134 } 135 return par1Entity.canBePushed() ? par1Entity.boundingBox : null; 136 } 137 138 /** 139 * returns the bounding box for this entity 140 */ 141 public AxisAlignedBB getBoundingBox() 142 { 143 if (getCollisionHandler() != null) 144 { 145 return getCollisionHandler().getBoundingBox(this); 146 } 147 return null; 148 } 149 150 /** 151 * Returns true if this entity should push and be pushed by other entities when colliding. 152 */ 153 public boolean canBePushed() 154 { 155 return canBePushed; 156 } 157 158 public EntityMinecart(World par1World, double par2, double par4, double par6, int par8) 159 { 160 this(par1World); 161 this.setPosition(par2, par4 + (double)this.yOffset, par6); 162 this.motionX = 0.0D; 163 this.motionY = 0.0D; 164 this.motionZ = 0.0D; 165 this.prevPosX = par2; 166 this.prevPosY = par4; 167 this.prevPosZ = par6; 168 this.minecartType = par8; 169 } 170 171 /** 172 * Returns the Y offset from the entity's position for any entity riding this one. 173 */ 174 public double getMountedYOffset() 175 { 176 return (double)this.height * 0.0D - 0.30000001192092896D; 177 } 178 179 /** 180 * Called when the entity is attacked. 181 */ 182 public boolean attackEntityFrom(DamageSource par1DamageSource, int par2) 183 { 184 if (!this.worldObj.isRemote && !this.isDead) 185 { 186 if (this.isEntityInvulnerable()) 187 { 188 return false; 189 } 190 else 191 { 192 this.setRollingDirection(-this.getRollingDirection()); 193 this.setRollingAmplitude(10); 194 this.setBeenAttacked(); 195 this.setDamage(this.getDamage() + par2 * 10); 196 197 if (par1DamageSource.getEntity() instanceof EntityPlayer && ((EntityPlayer)par1DamageSource.getEntity()).capabilities.isCreativeMode) 198 { 199 this.setDamage(100); 200 } 201 202 if (this.getDamage() > 40) 203 { 204 if (this.riddenByEntity != null) 205 { 206 this.riddenByEntity.mountEntity(this); 207 } 208 209 this.setDead(); 210 dropCartAsItem(); 211 } 212 213 return true; 214 } 215 } 216 else 217 { 218 return true; 219 } 220 } 221 222 @SideOnly(Side.CLIENT) 223 224 /** 225 * Setups the entity to do the hurt animation. Only used by packets in multiplayer. 226 */ 227 public void performHurtAnimation() 228 { 229 this.setRollingDirection(-this.getRollingDirection()); 230 this.setRollingAmplitude(10); 231 this.setDamage(this.getDamage() + this.getDamage() * 10); 232 } 233 234 /** 235 * Returns true if other Entities should be prevented from moving through this Entity. 236 */ 237 public boolean canBeCollidedWith() 238 { 239 return !this.isDead; 240 } 241 242 /** 243 * Will get destroyed next tick. 244 */ 245 public void setDead() 246 { 247 if (this.field_82345_h) 248 { 249 for (int var1 = 0; var1 < this.getSizeInventory(); ++var1) 250 { 251 ItemStack var2 = this.getStackInSlot(var1); 252 253 if (var2 != null) 254 { 255 float var3 = this.rand.nextFloat() * 0.8F + 0.1F; 256 float var4 = this.rand.nextFloat() * 0.8F + 0.1F; 257 float var5 = this.rand.nextFloat() * 0.8F + 0.1F; 258 259 while (var2.stackSize > 0) 260 { 261 int var6 = this.rand.nextInt(21) + 10; 262 263 if (var6 > var2.stackSize) 264 { 265 var6 = var2.stackSize; 266 } 267 268 var2.stackSize -= var6; 269 EntityItem var7 = new EntityItem(this.worldObj, this.posX + (double)var3, this.posY + (double)var4, this.posZ + (double)var5, new ItemStack(var2.itemID, var6, var2.getItemDamage())); 270 271 if (var2.hasTagCompound()) 272 { 273 var7.getEntityItem().setTagCompound((NBTTagCompound)var2.getTagCompound().copy()); 274 } 275 276 float var8 = 0.05F; 277 var7.motionX = (double)((float)this.rand.nextGaussian() * var8); 278 var7.motionY = (double)((float)this.rand.nextGaussian() * var8 + 0.2F); 279 var7.motionZ = (double)((float)this.rand.nextGaussian() * var8); 280 this.worldObj.spawnEntityInWorld(var7); 281 } 282 } 283 } 284 } 285 286 super.setDead(); 287 288 if (this.field_82344_g != null) 289 { 290 this.field_82344_g.update(); 291 } 292 } 293 294 /** 295 * Teleports the entity to another dimension. Params: Dimension number to teleport to 296 */ 297 public void travelToDimension(int par1) 298 { 299 this.field_82345_h = false; 300 super.travelToDimension(par1); 301 } 302 303 /** 304 * Called to update the entity's position/logic. 305 */ 306 public void onUpdate() 307 { 308 if (this.field_82344_g != null) 309 { 310 this.field_82344_g.update(); 311 } 312 313 if (this.getRollingAmplitude() > 0) 314 { 315 this.setRollingAmplitude(this.getRollingAmplitude() - 1); 316 } 317 318 if (this.getDamage() > 0) 319 { 320 this.setDamage(this.getDamage() - 1); 321 } 322 323 if (this.posY < -64.0D) 324 { 325 this.kill(); 326 } 327 328 if (this.isMinecartPowered() && this.rand.nextInt(4) == 0 && minecartType == 2 && getClass() == EntityMinecart.class) 329 { 330 this.worldObj.spawnParticle("largesmoke", this.posX, this.posY + 0.8D, this.posZ, 0.0D, 0.0D, 0.0D); 331 } 332 333 int var2; 334 335 if (!this.worldObj.isRemote && this.worldObj instanceof WorldServer) 336 { 337 this.worldObj.theProfiler.startSection("portal"); 338 MinecraftServer var1 = ((WorldServer)this.worldObj).getMinecraftServer(); 339 var2 = this.getMaxInPortalTime(); 340 341 if (this.inPortal) 342 { 343 if (var1.getAllowNether()) 344 { 345 if (this.ridingEntity == null && this.timeInPortal++ >= var2) 346 { 347 this.timeInPortal = var2; 348 this.timeUntilPortal = this.getPortalCooldown(); 349 byte var3; 350 351 if (this.worldObj.provider.dimensionId == -1) 352 { 353 var3 = 0; 354 } 355 else 356 { 357 var3 = -1; 358 } 359 360 this.travelToDimension(var3); 361 } 362 363 this.inPortal = false; 364 } 365 } 366 else 367 { 368 if (this.timeInPortal > 0) 369 { 370 this.timeInPortal -= 4; 371 } 372 373 if (this.timeInPortal < 0) 374 { 375 this.timeInPortal = 0; 376 } 377 } 378 379 if (this.timeUntilPortal > 0) 380 { 381 --this.timeUntilPortal; 382 } 383 384 this.worldObj.theProfiler.endSection(); 385 } 386 387 if (this.worldObj.isRemote) 388 { 389 if (this.turnProgress > 0) 390 { 391 double var46 = this.posX + (this.minecartX - this.posX) / (double)this.turnProgress; 392 double var48 = this.posY + (this.minecartY - this.posY) / (double)this.turnProgress; 393 double var5 = this.posZ + (this.minecartZ - this.posZ) / (double)this.turnProgress; 394 double var7 = MathHelper.wrapAngleTo180_double(this.minecartYaw - (double)this.rotationYaw); 395 this.rotationYaw = (float)((double)this.rotationYaw + var7 / (double)this.turnProgress); 396 this.rotationPitch = (float)((double)this.rotationPitch + (this.minecartPitch - (double)this.rotationPitch) / (double)this.turnProgress); 397 --this.turnProgress; 398 this.setPosition(var46, var48, var5); 399 this.setRotation(this.rotationYaw, this.rotationPitch); 400 } 401 else 402 { 403 this.setPosition(this.posX, this.posY, this.posZ); 404 this.setRotation(this.rotationYaw, this.rotationPitch); 405 } 406 } 407 else 408 { 409 this.prevPosX = this.posX; 410 this.prevPosY = this.posY; 411 this.prevPosZ = this.posZ; 412 this.motionY -= 0.03999999910593033D; 413 int var45 = MathHelper.floor_double(this.posX); 414 var2 = MathHelper.floor_double(this.posY); 415 int var47 = MathHelper.floor_double(this.posZ); 416 417 if (BlockRail.isRailBlockAt(this.worldObj, var45, var2 - 1, var47)) 418 { 419 --var2; 420 } 421 422 double var4 = 0.4D; 423 double var6 = 0.0078125D; 424 int var8 = this.worldObj.getBlockId(var45, var2, var47); 425 426 if (canUseRail() && BlockRail.isRailBlock(var8)) 427 { 428 this.fallDistance = 0.0F; 429 Vec3 var9 = this.func_70489_a(this.posX, this.posY, this.posZ); 430 int var10 = ((BlockRail)Block.blocksList[var8]).getBasicRailMetadata(worldObj, this, var45, var2, var47); 431 this.posY = (double)var2; 432 boolean var11 = false; 433 boolean var12 = false; 434 435 if (var8 == Block.railPowered.blockID) 436 { 437 var11 = (worldObj.getBlockMetadata(var45, var2, var47) & 8) != 0; 438 var12 = !var11; 439 } 440 441 if (((BlockRail)Block.blocksList[var8]).isPowered()) 442 { 443 var10 &= 7; 444 } 445 446 if (var10 >= 2 && var10 <= 5) 447 { 448 this.posY = (double)(var2 + 1); 449 } 450 451 adjustSlopeVelocities(var10); 452 453 int[][] var13 = matrix[var10]; 454 double var14 = (double)(var13[1][0] - var13[0][0]); 455 double var16 = (double)(var13[1][2] - var13[0][2]); 456 double var18 = Math.sqrt(var14 * var14 + var16 * var16); 457 double var20 = this.motionX * var14 + this.motionZ * var16; 458 459 if (var20 < 0.0D) 460 { 461 var14 = -var14; 462 var16 = -var16; 463 } 464 465 double var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 466 this.motionX = var22 * var14 / var18; 467 this.motionZ = var22 * var16 / var18; 468 double var24; 469 double var26; 470 471 if (this.riddenByEntity != null) 472 { 473 var24 = this.riddenByEntity.motionX * this.riddenByEntity.motionX + this.riddenByEntity.motionZ * this.riddenByEntity.motionZ; 474 var26 = this.motionX * this.motionX + this.motionZ * this.motionZ; 475 476 if (var24 > 1.0E-4D && var26 < 0.01D) 477 { 478 this.motionX += this.riddenByEntity.motionX * 0.1D; 479 this.motionZ += this.riddenByEntity.motionZ * 0.1D; 480 var12 = false; 481 } 482 } 483 484 if (var12 && shouldDoRailFunctions()) 485 { 486 var24 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 487 488 if (var24 < 0.03D) 489 { 490 this.motionX *= 0.0D; 491 this.motionY *= 0.0D; 492 this.motionZ *= 0.0D; 493 } 494 else 495 { 496 this.motionX *= 0.5D; 497 this.motionY *= 0.0D; 498 this.motionZ *= 0.5D; 499 } 500 } 501 502 var24 = 0.0D; 503 var26 = (double)var45 + 0.5D + (double)var13[0][0] * 0.5D; 504 double var28 = (double)var47 + 0.5D + (double)var13[0][2] * 0.5D; 505 double var30 = (double)var45 + 0.5D + (double)var13[1][0] * 0.5D; 506 double var32 = (double)var47 + 0.5D + (double)var13[1][2] * 0.5D; 507 var14 = var30 - var26; 508 var16 = var32 - var28; 509 double var34; 510 double var36; 511 512 if (var14 == 0.0D) 513 { 514 this.posX = (double)var45 + 0.5D; 515 var24 = this.posZ - (double)var47; 516 } 517 else if (var16 == 0.0D) 518 { 519 this.posZ = (double)var47 + 0.5D; 520 var24 = this.posX - (double)var45; 521 } 522 else 523 { 524 var34 = this.posX - var26; 525 var36 = this.posZ - var28; 526 var24 = (var34 * var14 + var36 * var16) * 2.0D; 527 } 528 529 this.posX = var26 + var14 * var24; 530 this.posZ = var28 + var16 * var24; 531 this.setPosition(this.posX, this.posY + (double)this.yOffset, this.posZ); 532 533 moveMinecartOnRail(var45, var2, var47); 534 535 if (var13[0][1] != 0 && MathHelper.floor_double(this.posX) - var45 == var13[0][0] && MathHelper.floor_double(this.posZ) - var47 == var13[0][2]) 536 { 537 this.setPosition(this.posX, this.posY + (double)var13[0][1], this.posZ); 538 } 539 else if (var13[1][1] != 0 && MathHelper.floor_double(this.posX) - var45 == var13[1][0] && MathHelper.floor_double(this.posZ) - var47 == var13[1][2]) 540 { 541 this.setPosition(this.posX, this.posY + (double)var13[1][1], this.posZ); 542 } 543 544 applyDragAndPushForces(); 545 546 Vec3 var54 = this.func_70489_a(this.posX, this.posY, this.posZ); 547 548 if (var54 != null && var9 != null) 549 { 550 double var39 = (var9.yCoord - var54.yCoord) * 0.05D; 551 var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 552 553 if (var22 > 0.0D) 554 { 555 this.motionX = this.motionX / var22 * (var22 + var39); 556 this.motionZ = this.motionZ / var22 * (var22 + var39); 557 } 558 559 this.setPosition(this.posX, var54.yCoord, this.posZ); 560 } 561 562 int var53 = MathHelper.floor_double(this.posX); 563 int var55 = MathHelper.floor_double(this.posZ); 564 565 if (var53 != var45 || var55 != var47) 566 { 567 var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 568 this.motionX = var22 * (double)(var53 - var45); 569 this.motionZ = var22 * (double)(var55 - var47); 570 } 571 572 double var41; 573 574 updatePushForces(); 575 576 if(shouldDoRailFunctions()) 577 { 578 ((BlockRail)Block.blocksList[var8]).onMinecartPass(worldObj, this, var45, var2, var47); 579 } 580 581 if (var11 && shouldDoRailFunctions()) 582 { 583 var41 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 584 585 if (var41 > 0.01D) 586 { 587 double var43 = 0.06D; 588 this.motionX += this.motionX / var41 * var43; 589 this.motionZ += this.motionZ / var41 * var43; 590 } 591 else if (var10 == 1) 592 { 593 if (this.worldObj.isBlockNormalCube(var45 - 1, var2, var47)) 594 { 595 this.motionX = 0.02D; 596 } 597 else if (this.worldObj.isBlockNormalCube(var45 + 1, var2, var47)) 598 { 599 this.motionX = -0.02D; 600 } 601 } 602 else if (var10 == 0) 603 { 604 if (this.worldObj.isBlockNormalCube(var45, var2, var47 - 1)) 605 { 606 this.motionZ = 0.02D; 607 } 608 else if (this.worldObj.isBlockNormalCube(var45, var2, var47 + 1)) 609 { 610 this.motionZ = -0.02D; 611 } 612 } 613 } 614 } 615 else 616 { 617 moveMinecartOffRail(var45, var2, var47); 618 } 619 620 this.doBlockCollisions(); 621 this.rotationPitch = 0.0F; 622 double var49 = this.prevPosX - this.posX; 623 double var50 = this.prevPosZ - this.posZ; 624 625 if (var49 * var49 + var50 * var50 > 0.001D) 626 { 627 this.rotationYaw = (float)(Math.atan2(var50, var49) * 180.0D / Math.PI); 628 629 if (this.isInReverse) 630 { 631 this.rotationYaw += 180.0F; 632 } 633 } 634 635 double var51 = (double)MathHelper.wrapAngleTo180_float(this.rotationYaw - this.prevRotationYaw); 636 637 if (var51 < -170.0D || var51 >= 170.0D) 638 { 639 this.rotationYaw += 180.0F; 640 this.isInReverse = !this.isInReverse; 641 } 642 643 this.setRotation(this.rotationYaw, this.rotationPitch); 644 645 AxisAlignedBB box = null; 646 if (getCollisionHandler() != null) 647 { 648 box = getCollisionHandler().getMinecartCollisionBox(this); 649 } 650 else 651 { 652 box = boundingBox.expand(0.2D, 0.0D, 0.2D); 653 } 654 655 List var15 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, box); 656 657 if (var15 != null && !var15.isEmpty()) 658 { 659 for (int var52 = 0; var52 < var15.size(); ++var52) 660 { 661 Entity var17 = (Entity)var15.get(var52); 662 663 if (var17 != this.riddenByEntity && var17.canBePushed() && var17 instanceof EntityMinecart) 664 { 665 var17.applyEntityCollision(this); 666 } 667 } 668 } 669 670 if (this.riddenByEntity != null && this.riddenByEntity.isDead) 671 { 672 if (this.riddenByEntity.ridingEntity == this) 673 { 674 this.riddenByEntity.ridingEntity = null; 675 } 676 677 this.riddenByEntity = null; 678 } 679 680 updateFuel(); 681 MinecraftForge.EVENT_BUS.post(new MinecartUpdateEvent(this, var45, var2, var47)); 682 } 683 } 684 685 @SideOnly(Side.CLIENT) 686 public Vec3 func_70495_a(double par1, double par3, double par5, double par7) 687 { 688 int var9 = MathHelper.floor_double(par1); 689 int var10 = MathHelper.floor_double(par3); 690 int var11 = MathHelper.floor_double(par5); 691 692 if (BlockRail.isRailBlockAt(this.worldObj, var9, var10 - 1, var11)) 693 { 694 --var10; 695 } 696 697 int var12 = this.worldObj.getBlockId(var9, var10, var11); 698 699 if (!BlockRail.isRailBlock(var12)) 700 { 701 return null; 702 } 703 else 704 { 705 int var13 = ((BlockRail)Block.blocksList[var12]).getBasicRailMetadata(worldObj, this, var9, var10, var11); 706 707 par3 = (double)var10; 708 709 if (var13 >= 2 && var13 <= 5) 710 { 711 par3 = (double)(var10 + 1); 712 } 713 714 int[][] var14 = matrix[var13]; 715 double var15 = (double)(var14[1][0] - var14[0][0]); 716 double var17 = (double)(var14[1][2] - var14[0][2]); 717 double var19 = Math.sqrt(var15 * var15 + var17 * var17); 718 var15 /= var19; 719 var17 /= var19; 720 par1 += var15 * par7; 721 par5 += var17 * par7; 722 723 if (var14[0][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[0][0] && MathHelper.floor_double(par5) - var11 == var14[0][2]) 724 { 725 par3 += (double)var14[0][1]; 726 } 727 else if (var14[1][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[1][0] && MathHelper.floor_double(par5) - var11 == var14[1][2]) 728 { 729 par3 += (double)var14[1][1]; 730 } 731 732 return this.func_70489_a(par1, par3, par5); 733 } 734 } 735 736 public Vec3 func_70489_a(double par1, double par3, double par5) 737 { 738 int var7 = MathHelper.floor_double(par1); 739 int var8 = MathHelper.floor_double(par3); 740 int var9 = MathHelper.floor_double(par5); 741 742 if (BlockRail.isRailBlockAt(this.worldObj, var7, var8 - 1, var9)) 743 { 744 --var8; 745 } 746 747 int var10 = this.worldObj.getBlockId(var7, var8, var9); 748 749 if (BlockRail.isRailBlock(var10)) 750 { 751 int var11 = ((BlockRail)Block.blocksList[var10]).getBasicRailMetadata(worldObj, this, var7, var8, var9); 752 par3 = (double)var8; 753 754 if (var11 >= 2 && var11 <= 5) 755 { 756 par3 = (double)(var8 + 1); 757 } 758 759 int[][] var12 = matrix[var11]; 760 double var13 = 0.0D; 761 double var15 = (double)var7 + 0.5D + (double)var12[0][0] * 0.5D; 762 double var17 = (double)var8 + 0.5D + (double)var12[0][1] * 0.5D; 763 double var19 = (double)var9 + 0.5D + (double)var12[0][2] * 0.5D; 764 double var21 = (double)var7 + 0.5D + (double)var12[1][0] * 0.5D; 765 double var23 = (double)var8 + 0.5D + (double)var12[1][1] * 0.5D; 766 double var25 = (double)var9 + 0.5D + (double)var12[1][2] * 0.5D; 767 double var27 = var21 - var15; 768 double var29 = (var23 - var17) * 2.0D; 769 double var31 = var25 - var19; 770 771 if (var27 == 0.0D) 772 { 773 par1 = (double)var7 + 0.5D; 774 var13 = par5 - (double)var9; 775 } 776 else if (var31 == 0.0D) 777 { 778 par5 = (double)var9 + 0.5D; 779 var13 = par1 - (double)var7; 780 } 781 else 782 { 783 double var33 = par1 - var15; 784 double var35 = par5 - var19; 785 var13 = (var33 * var27 + var35 * var31) * 2.0D; 786 } 787 788 par1 = var15 + var27 * var13; 789 par3 = var17 + var29 * var13; 790 par5 = var19 + var31 * var13; 791 792 if (var29 < 0.0D) 793 { 794 ++par3; 795 } 796 797 if (var29 > 0.0D) 798 { 799 par3 += 0.5D; 800 } 801 802 return this.worldObj.getWorldVec3Pool().getVecFromPool(par1, par3, par5); 803 } 804 else 805 { 806 return null; 807 } 808 } 809 810 /** 811 * (abstract) Protected helper method to write subclass entity data to NBT. 812 */ 813 protected void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) 814 { 815 par1NBTTagCompound.setInteger("Type", this.minecartType); 816 817 if (isPoweredCart()) 818 { 819 par1NBTTagCompound.setDouble("PushX", this.pushX); 820 par1NBTTagCompound.setDouble("PushZ", this.pushZ); 821 par1NBTTagCompound.setInteger("Fuel", this.fuel); 822 } 823 824 if (getSizeInventory() > 0) 825 { 826 NBTTagList var2 = new NBTTagList(); 827 828 for (int var3 = 0; var3 < this.cargoItems.length; ++var3) 829 { 830 if (this.cargoItems[var3] != null) 831 { 832 NBTTagCompound var4 = new NBTTagCompound(); 833 var4.setByte("Slot", (byte)var3); 834 this.cargoItems[var3].writeToNBT(var4); 835 var2.appendTag(var4); 836 } 837 } 838 839 par1NBTTagCompound.setTag("Items", var2); 840 } 841 } 842 843 /** 844 * (abstract) Protected helper method to read subclass entity data from NBT. 845 */ 846 protected void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) 847 { 848 this.minecartType = par1NBTTagCompound.getInteger("Type"); 849 850 if (isPoweredCart()) 851 { 852 this.pushX = par1NBTTagCompound.getDouble("PushX"); 853 this.pushZ = par1NBTTagCompound.getDouble("PushZ"); 854 try 855 { 856 this.fuel = par1NBTTagCompound.getInteger("Fuel"); 857 } 858 catch (ClassCastException e) 859 { 860 this.fuel = par1NBTTagCompound.getShort("Fuel"); 861 } 862 } 863 864 if (getSizeInventory() > 0) 865 { 866 NBTTagList var2 = par1NBTTagCompound.getTagList("Items"); 867 this.cargoItems = new ItemStack[this.getSizeInventory()]; 868 869 for (int var3 = 0; var3 < var2.tagCount(); ++var3) 870 { 871 NBTTagCompound var4 = (NBTTagCompound)var2.tagAt(var3); 872 int var5 = var4.getByte("Slot") & 255; 873 874 if (var5 >= 0 && var5 < this.cargoItems.length) 875 { 876 this.cargoItems[var5] = ItemStack.loadItemStackFromNBT(var4); 877 } 878 } 879 } 880 } 881 882 @SideOnly(Side.CLIENT) 883 public float getShadowSize() 884 { 885 return 0.0F; 886 } 887 888 /** 889 * Applies a velocity to each of the entities pushing them away from each other. Args: entity 890 */ 891 public void applyEntityCollision(Entity par1Entity) 892 { 893 MinecraftForge.EVENT_BUS.post(new MinecartCollisionEvent(this, par1Entity)); 894 if (getCollisionHandler() != null) 895 { 896 getCollisionHandler().onEntityCollision(this, par1Entity); 897 return; 898 } 899 if (!this.worldObj.isRemote) 900 { 901 if (par1Entity != this.riddenByEntity) 902 { 903 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) 904 { 905 par1Entity.mountEntity(this); 906 } 907 908 double var2 = par1Entity.posX - this.posX; 909 double var4 = par1Entity.posZ - this.posZ; 910 double var6 = var2 * var2 + var4 * var4; 911 912 if (var6 >= 9.999999747378752E-5D) 913 { 914 var6 = (double)MathHelper.sqrt_double(var6); 915 var2 /= var6; 916 var4 /= var6; 917 double var8 = 1.0D / var6; 918 919 if (var8 > 1.0D) 920 { 921 var8 = 1.0D; 922 } 923 924 var2 *= var8; 925 var4 *= var8; 926 var2 *= 0.10000000149011612D; 927 var4 *= 0.10000000149011612D; 928 var2 *= (double)(1.0F - this.entityCollisionReduction); 929 var4 *= (double)(1.0F - this.entityCollisionReduction); 930 var2 *= 0.5D; 931 var4 *= 0.5D; 932 933 if (par1Entity instanceof EntityMinecart) 934 { 935 double var10 = par1Entity.posX - this.posX; 936 double var12 = par1Entity.posZ - this.posZ; 937 Vec3 var14 = this.worldObj.getWorldVec3Pool().getVecFromPool(var10, 0.0D, var12).normalize(); 938 Vec3 var15 = 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(); 939 double var16 = Math.abs(var14.dotProduct(var15)); 940 941 if (var16 < 0.800000011920929D) 942 { 943 return; 944 } 945 946 double var18 = par1Entity.motionX + this.motionX; 947 double var20 = par1Entity.motionZ + this.motionZ; 948 949 if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart()) 950 { 951 this.motionX *= 0.20000000298023224D; 952 this.motionZ *= 0.20000000298023224D; 953 this.addVelocity(par1Entity.motionX - var2, 0.0D, par1Entity.motionZ - var4); 954 par1Entity.motionX *= 0.949999988079071D; 955 par1Entity.motionZ *= 0.949999988079071D; 956 } 957 else if (!((EntityMinecart)par1Entity).isPoweredCart() && isPoweredCart()) 958 { 959 par1Entity.motionX *= 0.20000000298023224D; 960 par1Entity.motionZ *= 0.20000000298023224D; 961 par1Entity.addVelocity(this.motionX + var2, 0.0D, this.motionZ + var4); 962 this.motionX *= 0.949999988079071D; 963 this.motionZ *= 0.949999988079071D; 964 } 965 else 966 { 967 var18 /= 2.0D; 968 var20 /= 2.0D; 969 this.motionX *= 0.20000000298023224D; 970 this.motionZ *= 0.20000000298023224D; 971 this.addVelocity(var18 - var2, 0.0D, var20 - var4); 972 par1Entity.motionX *= 0.20000000298023224D; 973 par1Entity.motionZ *= 0.20000000298023224D; 974 par1Entity.addVelocity(var18 + var2, 0.0D, var20 + var4); 975 } 976 } 977 else 978 { 979 this.addVelocity(-var2, 0.0D, -var4); 980 par1Entity.addVelocity(var2 / 4.0D, 0.0D, var4 / 4.0D); 981 } 982 } 983 } 984 } 985 } 986 987 /** 988 * Returns the number of slots in the inventory. 989 */ 990 public int getSizeInventory() 991 { 992 return (minecartType == 1 && getClass() == EntityMinecart.class ? 27 : 0); 993 } 994 995 /** 996 * Returns the stack in slot i 997 */ 998 public ItemStack getStackInSlot(int par1) 999 { 1000 return this.cargoItems[par1]; 1001 } 1002 1003 /** 1004 * Removes from an inventory slot (first arg) up to a specified number (second arg) of items and returns them in a 1005 * new stack. 1006 */ 1007 public ItemStack decrStackSize(int par1, int par2) 1008 { 1009 if (this.cargoItems[par1] != null) 1010 { 1011 ItemStack var3; 1012 1013 if (this.cargoItems[par1].stackSize <= par2) 1014 { 1015 var3 = this.cargoItems[par1]; 1016 this.cargoItems[par1] = null; 1017 return var3; 1018 } 1019 else 1020 { 1021 var3 = this.cargoItems[par1].splitStack(par2); 1022 1023 if (this.cargoItems[par1].stackSize == 0) 1024 { 1025 this.cargoItems[par1] = null; 1026 } 1027 1028 return var3; 1029 } 1030 } 1031 else 1032 { 1033 return null; 1034 } 1035 } 1036 1037 /** 1038 * When some containers are closed they call this on each slot, then drop whatever it returns as an EntityItem - 1039 * like when you close a workbench GUI. 1040 */ 1041 public ItemStack getStackInSlotOnClosing(int par1) 1042 { 1043 if (this.cargoItems[par1] != null) 1044 { 1045 ItemStack var2 = this.cargoItems[par1]; 1046 this.cargoItems[par1] = null; 1047 return var2; 1048 } 1049 else 1050 { 1051 return null; 1052 } 1053 } 1054 1055 /** 1056 * Sets the given item stack to the specified slot in the inventory (can be crafting or armor sections). 1057 */ 1058 public void setInventorySlotContents(int par1, ItemStack par2ItemStack) 1059 { 1060 this.cargoItems[par1] = par2ItemStack; 1061 1062 if (par2ItemStack != null && par2ItemStack.stackSize > this.getInventoryStackLimit()) 1063 { 1064 par2ItemStack.stackSize = this.getInventoryStackLimit(); 1065 } 1066 } 1067 1068 /** 1069 * Returns the name of the inventory. 1070 */ 1071 public String getInvName() 1072 { 1073 return "container.minecart"; 1074 } 1075 1076 /** 1077 * Returns the maximum stack size for a inventory slot. Seems to always be 64, possibly will be extended. *Isn't 1078 * this more of a set than a get?* 1079 */ 1080 public int getInventoryStackLimit() 1081 { 1082 return 64; 1083 } 1084 1085 /** 1086 * Called when an the contents of an Inventory change, usually 1087 */ 1088 public void onInventoryChanged() {} 1089 1090 /** 1091 * Called when a player interacts with a mob. e.g. gets milk from a cow, gets into the saddle on a pig. 1092 */ 1093 public boolean interact(EntityPlayer par1EntityPlayer) 1094 { 1095 if (MinecraftForge.EVENT_BUS.post(new MinecartInteractEvent(this, par1EntityPlayer))) 1096 { 1097 return true; 1098 } 1099 1100 if (canBeRidden()) 1101 { 1102 if (this.riddenByEntity != null && this.riddenByEntity instanceof EntityPlayer && this.riddenByEntity != par1EntityPlayer) 1103 { 1104 return true; 1105 } 1106 1107 if (!this.worldObj.isRemote) 1108 { 1109 par1EntityPlayer.mountEntity(this); 1110 } 1111 } 1112 else if (getSizeInventory() > 0) 1113 { 1114 if (!this.worldObj.isRemote) 1115 { 1116 par1EntityPlayer.displayGUIChest(this); 1117 } 1118 } 1119 else if (this.minecartType == 2 && getClass() == EntityMinecart.class) 1120 { 1121 ItemStack var2 = par1EntityPlayer.inventory.getCurrentItem(); 1122 1123 if (var2 != null && var2.itemID == Item.coal.itemID) 1124 { 1125 if (--var2.stackSize == 0) 1126 { 1127 par1EntityPlayer.inventory.setInventorySlotContents(par1EntityPlayer.inventory.currentItem, (ItemStack)null); 1128 } 1129 1130 this.fuel += 3600; 1131 } 1132 1133 this.pushX = this.posX - par1EntityPlayer.posX; 1134 this.pushZ = this.posZ - par1EntityPlayer.posZ; 1135 } 1136 1137 return true; 1138 } 1139 1140 @SideOnly(Side.CLIENT) 1141 1142 /** 1143 * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX, 1144 * posY, posZ, yaw, pitch 1145 */ 1146 public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9) 1147 { 1148 this.minecartX = par1; 1149 this.minecartY = par3; 1150 this.minecartZ = par5; 1151 this.minecartYaw = (double)par7; 1152 this.minecartPitch = (double)par8; 1153 this.turnProgress = par9 + 2; 1154 this.motionX = this.velocityX; 1155 this.motionY = this.velocityY; 1156 this.motionZ = this.velocityZ; 1157 } 1158 1159 @SideOnly(Side.CLIENT) 1160 1161 /** 1162 * Sets the velocity to the args. Args: x, y, z 1163 */ 1164 public void setVelocity(double par1, double par3, double par5) 1165 { 1166 this.velocityX = this.motionX = par1; 1167 this.velocityY = this.motionY = par3; 1168 this.velocityZ = this.motionZ = par5; 1169 } 1170 1171 /** 1172 * Do not make give this method the name canInteractWith because it clashes with Container 1173 */ 1174 public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer) 1175 { 1176 return this.isDead ? false : par1EntityPlayer.getDistanceSqToEntity(this) <= 64.0D; 1177 } 1178 1179 /** 1180 * Is this minecart powered (Fuel > 0) 1181 */ 1182 public boolean isMinecartPowered() 1183 { 1184 return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0; 1185 } 1186 1187 /** 1188 * Set if this minecart is powered (Fuel > 0) 1189 */ 1190 protected void setMinecartPowered(boolean par1) 1191 { 1192 if (par1) 1193 { 1194 this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) | 1))); 1195 } 1196 else 1197 { 1198 this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) & -2))); 1199 } 1200 } 1201 1202 public void openChest() {} 1203 1204 public void closeChest() {} 1205 1206 /** 1207 * Sets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over 1208 * 40. 1209 */ 1210 public void setDamage(int par1) 1211 { 1212 this.dataWatcher.updateObject(19, Integer.valueOf(par1)); 1213 } 1214 1215 /** 1216 * Gets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over 1217 * 40. 1218 */ 1219 public int getDamage() 1220 { 1221 return this.dataWatcher.getWatchableObjectInt(19); 1222 } 1223 1224 /** 1225 * Sets the rolling amplitude the cart rolls while being attacked. 1226 */ 1227 public void setRollingAmplitude(int par1) 1228 { 1229 this.dataWatcher.updateObject(17, Integer.valueOf(par1)); 1230 } 1231 1232 /** 1233 * Gets the rolling amplitude the cart rolls while being attacked. 1234 */ 1235 public int getRollingAmplitude() 1236 { 1237 return this.dataWatcher.getWatchableObjectInt(17); 1238 } 1239 1240 /** 1241 * Sets the rolling direction the cart rolls while being attacked. Can be 1 or -1. 1242 */ 1243 public void setRollingDirection(int par1) 1244 { 1245 this.dataWatcher.updateObject(18, Integer.valueOf(par1)); 1246 } 1247 1248 /** 1249 * Gets the rolling direction the cart rolls while being attacked. Can be 1 or -1. 1250 */ 1251 public int getRollingDirection() 1252 { 1253 return this.dataWatcher.getWatchableObjectInt(18); 1254 } 1255 1256 /** 1257 * Drops the cart as a item. The exact item dropped is defined by getItemDropped(). 1258 */ 1259 public void dropCartAsItem() 1260 { 1261 for(ItemStack item : getItemsDropped()) 1262 { 1263 entityDropItem(item, 0); 1264 } 1265 } 1266 1267 /** 1268 * Override this to define which items your cart drops when broken. 1269 * This does not include items contained in the inventory, 1270 * that is handled elsewhere. 1271 * @return A list of items dropped. 1272 */ 1273 public List<ItemStack> getItemsDropped() 1274 { 1275 List<ItemStack> items = new ArrayList<ItemStack>(); 1276 items.add(new ItemStack(Item.minecartEmpty)); 1277 1278 switch(minecartType) 1279 { 1280 case 1: 1281 items.add(new ItemStack(Block.chest)); 1282 break; 1283 case 2: 1284 items.add(new ItemStack(Block.stoneOvenIdle)); 1285 break; 1286 } 1287 return items; 1288 } 1289 1290 /** 1291 * This function returns an ItemStack that represents this cart. 1292 * This should be an ItemStack that can be used by the player to place the cart. 1293 * This is the item that was registered with the cart via the registerMinecart function, 1294 * but is not necessary the item the cart drops when destroyed. 1295 * @return An ItemStack that can be used to place the cart. 1296 */ 1297 public ItemStack getCartItem() 1298 { 1299 return MinecartRegistry.getItemForCart(this); 1300 } 1301 1302 /** 1303 * Returns true if this cart is self propelled. 1304 * @return True if powered. 1305 */ 1306 public boolean isPoweredCart() 1307 { 1308 return minecartType == 2 && getClass() == EntityMinecart.class; 1309 } 1310 1311 /** 1312 * Returns true if this cart is a storage cart 1313 * Some carts may have inventories but not be storage carts 1314 * and some carts without inventories may be storage carts. 1315 * @return True if this cart should be classified as a storage cart. 1316 */ 1317 public boolean isStorageCart() 1318 { 1319 return minecartType == 1 && getClass() == EntityMinecart.class; 1320 } 1321 1322 /** 1323 * Returns true if this cart can be ridden by an Entity. 1324 * @return True if this cart can be ridden. 1325 */ 1326 public boolean canBeRidden() 1327 { 1328 if(minecartType == 0 && getClass() == EntityMinecart.class) 1329 { 1330 return true; 1331 } 1332 return false; 1333 } 1334 1335 /** 1336 * Returns true if this cart can currently use rails. 1337 * This function is mainly used to gracefully detach a minecart from a rail. 1338 * @return True if the minecart can use rails. 1339 */ 1340 public boolean canUseRail() 1341 { 1342 return canUseRail; 1343 } 1344 1345 /** 1346 * Set whether the minecart can use rails. 1347 * This function is mainly used to gracefully detach a minecart from a rail. 1348 * @param use Whether the minecart can currently use rails. 1349 */ 1350 public void setCanUseRail(boolean use) 1351 { 1352 canUseRail = use; 1353 } 1354 1355 /** 1356 * Return false if this cart should not call IRail.onMinecartPass() and should ignore Powered Rails. 1357 * @return True if this cart should call IRail.onMinecartPass(). 1358 */ 1359 public boolean shouldDoRailFunctions() 1360 { 1361 return true; 1362 } 1363 1364 /** 1365 * Simply returns the minecartType variable. 1366 * @return minecartType 1367 */ 1368 public int getMinecartType() 1369 { 1370 return minecartType; 1371 } 1372 1373 /** 1374 * Gets the current global Minecart Collision handler if none 1375 * is registered, returns null 1376 * @return The collision handler or null 1377 */ 1378 public static IMinecartCollisionHandler getCollisionHandler() 1379 { 1380 return collisionHandler; 1381 } 1382 1383 /** 1384 * Sets the global Minecart Collision handler, overwrites any 1385 * that is currently set. 1386 * @param handler The new handler 1387 */ 1388 public static void setCollisionHandler(IMinecartCollisionHandler handler) 1389 { 1390 collisionHandler = handler; 1391 } 1392 1393 /** 1394 * Carts should return their drag factor here 1395 * @return The drag rate. 1396 */ 1397 protected double getDrag() 1398 { 1399 return riddenByEntity != null ? defaultDragRidden : defaultDragEmpty; 1400 } 1401 1402 /** 1403 * Moved to allow overrides. 1404 * This code applies drag and updates push forces. 1405 */ 1406 protected void applyDragAndPushForces() 1407 { 1408 if(isPoweredCart()) 1409 { 1410 double d27 = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ); 1411 if(d27 > 0.01D) 1412 { 1413 pushX /= d27; 1414 pushZ /= d27; 1415 double d29 = 0.04; 1416 motionX *= 0.8D; 1417 motionY *= 0.0D; 1418 motionZ *= 0.8D; 1419 motionX += pushX * d29; 1420 motionZ += pushZ * d29; 1421 } 1422 else 1423 { 1424 motionX *= 0.9D; 1425 motionY *= 0.0D; 1426 motionZ *= 0.9D; 1427 } 1428 } 1429 motionX *= getDrag(); 1430 motionY *= 0.0D; 1431 motionZ *= getDrag(); 1432 } 1433 1434 /** 1435 * Moved to allow overrides. 1436 * This code updates push forces. 1437 */ 1438 protected void updatePushForces() 1439 { 1440 if(isPoweredCart()) 1441 { 1442 double push = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ); 1443 if(push > 0.01D && motionX * motionX + motionZ * motionZ > 0.001D) 1444 { 1445 pushX /= push; 1446 pushZ /= push; 1447 if(pushX * motionX + pushZ * motionZ < 0.0D) 1448 { 1449 pushX = 0.0D; 1450 pushZ = 0.0D; 1451 } 1452 else 1453 { 1454 pushX = motionX; 1455 pushZ = motionZ; 1456 } 1457 } 1458 } 1459 } 1460 1461 /** 1462 * Moved to allow overrides. 1463 * This code handles minecart movement and speed capping when on a rail. 1464 */ 1465 protected void moveMinecartOnRail(int i, int j, int k) 1466 { 1467 int id = worldObj.getBlockId(i, j, k); 1468 if (!BlockRail.isRailBlock(id)) 1469 { 1470 return; 1471 } 1472 float railMaxSpeed = ((BlockRail)Block.blocksList[id]).getRailMaxSpeed(worldObj, this, i, j, k); 1473 1474 double maxSpeed = Math.min(railMaxSpeed, getMaxSpeedRail()); 1475 double mX = motionX; 1476 double mZ = motionZ; 1477 if(riddenByEntity != null) 1478 { 1479 mX *= 0.75D; 1480 mZ *= 0.75D; 1481 } 1482 if(mX < -maxSpeed) mX = -maxSpeed; 1483 if(mX > maxSpeed) mX = maxSpeed; 1484 if(mZ < -maxSpeed) mZ = -maxSpeed; 1485 if(mZ > maxSpeed) mZ = maxSpeed; 1486 moveEntity(mX, 0.0D, mZ); 1487 } 1488 1489 /** 1490 * Moved to allow overrides. 1491 * This code handles minecart movement and speed capping when not on a rail. 1492 */ 1493 protected void moveMinecartOffRail(int i, int j, int k) 1494 { 1495 double d2 = getMaxSpeedGround(); 1496 if(!onGround) 1497 { 1498 d2 = getMaxSpeedAirLateral(); 1499 } 1500 if(motionX < -d2) motionX = -d2; 1501 if(motionX > d2) motionX = d2; 1502 if(motionZ < -d2) motionZ = -d2; 1503 if(motionZ > d2) motionZ = d2; 1504 double moveY = motionY; 1505 if(getMaxSpeedAirVertical() > 0 && motionY > getMaxSpeedAirVertical()) 1506 { 1507 moveY = getMaxSpeedAirVertical(); 1508 if(Math.abs(motionX) < 0.3f && Math.abs(motionZ) < 0.3f) 1509 { 1510 moveY = 0.15f; 1511 motionY = moveY; 1512 } 1513 } 1514 if(onGround) 1515 { 1516 motionX *= 0.5D; 1517 motionY *= 0.5D; 1518 motionZ *= 0.5D; 1519 } 1520 moveEntity(motionX, moveY, motionZ); 1521 if(!onGround) 1522 { 1523 motionX *= getDragAir(); 1524 motionY *= getDragAir(); 1525 motionZ *= getDragAir(); 1526 } 1527 } 1528 1529 /** 1530 * Moved to allow overrides. 1531 * This code applies fuel consumption. 1532 */ 1533 protected void updateFuel() 1534 { 1535 if (fuel > 0) fuel--; 1536 if (fuel <= 0) pushX = pushZ = 0.0D; 1537 setMinecartPowered(fuel > 0); 1538 } 1539 1540 /** 1541 * Moved to allow overrides, This code handle slopes affecting velocity. 1542 * @param metadata The blocks position metadata 1543 */ 1544 protected void adjustSlopeVelocities(int metadata) 1545 { 1546 double acceleration = 0.0078125D; 1547 if (metadata == 2) 1548 { 1549 motionX -= acceleration; 1550 } 1551 else if (metadata == 3) 1552 { 1553 motionX += acceleration; 1554 } 1555 else if (metadata == 4) 1556 { 1557 motionZ += acceleration; 1558 } 1559 else if (metadata == 5) 1560 { 1561 motionZ -= acceleration; 1562 } 1563 } 1564 1565 /** 1566 * Getters/setters for physics variables 1567 */ 1568 1569 /** 1570 * Returns the carts max speed. 1571 * Carts going faster than 1.1 cause issues with chunk loading. 1572 * Carts cant traverse slopes or corners at greater than 0.5 - 0.6. 1573 * This value is compared with the rails max speed to determine 1574 * the carts current max speed. A normal rails max speed is 0.4. 1575 * @return Carts max speed. 1576 */ 1577 public float getMaxSpeedRail() 1578 { 1579 return maxSpeedRail; 1580 } 1581 1582 public void setMaxSpeedRail(float value) 1583 { 1584 maxSpeedRail = value; 1585 } 1586 1587 public float getMaxSpeedGround() 1588 { 1589 return maxSpeedGround; 1590 } 1591 1592 public void setMaxSpeedGround(float value) 1593 { 1594 maxSpeedGround = value; 1595 } 1596 1597 public float getMaxSpeedAirLateral() 1598 { 1599 return maxSpeedAirLateral; 1600 } 1601 1602 public void setMaxSpeedAirLateral(float value) 1603 { 1604 maxSpeedAirLateral = value; 1605 } 1606 1607 public float getMaxSpeedAirVertical() 1608 { 1609 return maxSpeedAirVertical; 1610 } 1611 1612 public void setMaxSpeedAirVertical(float value) 1613 { 1614 maxSpeedAirVertical = value; 1615 } 1616 1617 public double getDragAir() 1618 { 1619 return dragAir; 1620 } 1621 1622 public void setDragAir(double value) 1623 { 1624 dragAir = value; 1625 } 1626}