001 package net.minecraft.entity.item; 002 003 import cpw.mods.fml.common.Side; 004 import cpw.mods.fml.common.asm.SideOnly; 005 006 import java.util.ArrayList; 007 import java.util.List; 008 import net.minecraft.block.Block; 009 import net.minecraft.block.BlockRail; 010 import net.minecraft.entity.Entity; 011 import net.minecraft.entity.EntityLiving; 012 import net.minecraft.entity.monster.EntityIronGolem; 013 import net.minecraft.entity.player.EntityPlayer; 014 import net.minecraft.inventory.IInventory; 015 import net.minecraft.item.Item; 016 import net.minecraft.item.ItemStack; 017 import net.minecraft.nbt.NBTTagCompound; 018 import net.minecraft.nbt.NBTTagList; 019 import net.minecraft.server.gui.IUpdatePlayerListBox; 020 import net.minecraft.util.AxisAlignedBB; 021 import net.minecraft.util.DamageSource; 022 import net.minecraft.util.MathHelper; 023 import net.minecraft.util.Vec3; 024 import net.minecraft.world.World; 025 026 import net.minecraftforge.common.IMinecartCollisionHandler; 027 import net.minecraftforge.common.MinecartRegistry; 028 import net.minecraftforge.common.MinecraftForge; 029 import net.minecraftforge.event.entity.minecart.*; 030 031 public class EntityMinecart extends Entity implements IInventory 032 { 033 /** Array of item stacks stored in minecart (for storage minecarts). */ 034 protected ItemStack[] cargoItems; 035 protected int fuel; 036 protected boolean field_70499_f; 037 038 /** The type of minecart, 2 for powered, 1 for storage. */ 039 public int minecartType; 040 public double pushX; 041 public double pushZ; 042 protected final IUpdatePlayerListBox field_82344_g; 043 protected boolean field_82345_h; 044 protected static final int[][][] field_70500_g = 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}}}; 045 046 /** appears to be the progress of the turn */ 047 protected int turnProgress; 048 protected double minecartX; 049 protected double minecartY; 050 protected double minecartZ; 051 protected double minecartYaw; 052 protected double minecartPitch; 053 @SideOnly(Side.CLIENT) 054 protected double velocityX; 055 @SideOnly(Side.CLIENT) 056 protected double velocityY; 057 @SideOnly(Side.CLIENT) 058 protected double velocityZ; 059 060 /* Forge: Minecart Compatibility Layer Integration. */ 061 public static float defaultMaxSpeedRail = 0.4f; 062 public static float defaultMaxSpeedGround = 0.4f; 063 public static float defaultMaxSpeedAirLateral = 0.4f; 064 public static float defaultMaxSpeedAirVertical = -1f; 065 public static double defaultDragRidden = 0.996999979019165D; 066 public static double defaultDragEmpty = 0.9599999785423279D; 067 public static double defaultDragAir = 0.94999998807907104D; 068 protected boolean canUseRail = true; 069 protected boolean canBePushed = true; 070 private static IMinecartCollisionHandler collisionHandler = null; 071 072 /* Instance versions of the above physics properties */ 073 protected float maxSpeedRail; 074 protected float maxSpeedGround; 075 protected float maxSpeedAirLateral; 076 protected float maxSpeedAirVertical; 077 protected double dragAir; 078 079 public EntityMinecart(World par1World) 080 { 081 super(par1World); 082 this.cargoItems = new ItemStack[36]; 083 this.fuel = 0; 084 this.field_70499_f = false; 085 this.field_82345_h = true; 086 this.preventEntitySpawning = true; 087 this.setSize(0.98F, 0.7F); 088 this.yOffset = this.height / 2.0F; 089 this.field_82344_g = par1World != null ? par1World.func_82735_a(this) : null; 090 091 maxSpeedRail = defaultMaxSpeedRail; 092 maxSpeedGround = defaultMaxSpeedGround; 093 maxSpeedAirLateral = defaultMaxSpeedAirLateral; 094 maxSpeedAirVertical = defaultMaxSpeedAirVertical; 095 dragAir = defaultDragAir; 096 } 097 098 public EntityMinecart(World world, int type) 099 { 100 this(world); 101 minecartType = type; 102 } 103 104 /** 105 * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to 106 * prevent them from trampling crops 107 */ 108 protected boolean canTriggerWalking() 109 { 110 return false; 111 } 112 113 protected void entityInit() 114 { 115 this.dataWatcher.addObject(16, new Byte((byte)0)); 116 this.dataWatcher.addObject(17, new Integer(0)); 117 this.dataWatcher.addObject(18, new Integer(1)); 118 this.dataWatcher.addObject(19, new Integer(0)); 119 } 120 121 /** 122 * Returns a boundingBox used to collide the entity with other entities and blocks. This enables the entity to be 123 * pushable on contact, like boats or minecarts. 124 */ 125 public AxisAlignedBB getCollisionBox(Entity par1Entity) 126 { 127 if (getCollisionHandler() != null) 128 { 129 return getCollisionHandler().getCollisionBox(this, par1Entity); 130 } 131 return par1Entity.canBePushed() ? par1Entity.boundingBox : null; 132 } 133 134 /** 135 * returns the bounding box for this entity 136 */ 137 public AxisAlignedBB getBoundingBox() 138 { 139 if (getCollisionHandler() != null) 140 { 141 return getCollisionHandler().getBoundingBox(this); 142 } 143 return null; 144 } 145 146 /** 147 * Returns true if this entity should push and be pushed by other entities when colliding. 148 */ 149 public boolean canBePushed() 150 { 151 return canBePushed; 152 } 153 154 public EntityMinecart(World par1World, double par2, double par4, double par6, int par8) 155 { 156 this(par1World); 157 this.setPosition(par2, par4 + (double)this.yOffset, par6); 158 this.motionX = 0.0D; 159 this.motionY = 0.0D; 160 this.motionZ = 0.0D; 161 this.prevPosX = par2; 162 this.prevPosY = par4; 163 this.prevPosZ = par6; 164 this.minecartType = par8; 165 } 166 167 /** 168 * Returns the Y offset from the entity's position for any entity riding this one. 169 */ 170 public double getMountedYOffset() 171 { 172 return (double)this.height * 0.0D - 0.30000001192092896D; 173 } 174 175 /** 176 * Called when the entity is attacked. 177 */ 178 public boolean attackEntityFrom(DamageSource par1DamageSource, int par2) 179 { 180 if (!this.worldObj.isRemote && !this.isDead) 181 { 182 if (this.func_85032_ar()) 183 { 184 return false; 185 } 186 else 187 { 188 this.func_70494_i(-this.func_70493_k()); 189 this.func_70497_h(10); 190 this.setBeenAttacked(); 191 this.setDamage(this.getDamage() + par2 * 10); 192 193 if (par1DamageSource.getEntity() instanceof EntityPlayer && ((EntityPlayer)par1DamageSource.getEntity()).capabilities.isCreativeMode) 194 { 195 this.setDamage(100); 196 } 197 198 if (this.getDamage() > 40) 199 { 200 if (this.riddenByEntity != null) 201 { 202 this.riddenByEntity.mountEntity(this); 203 } 204 205 this.setDead(); 206 dropCartAsItem(); 207 } 208 209 return true; 210 } 211 } 212 else 213 { 214 return true; 215 } 216 } 217 218 @SideOnly(Side.CLIENT) 219 220 /** 221 * Setups the entity to do the hurt animation. Only used by packets in multiplayer. 222 */ 223 public void performHurtAnimation() 224 { 225 this.func_70494_i(-this.func_70493_k()); 226 this.func_70497_h(10); 227 this.setDamage(this.getDamage() + this.getDamage() * 10); 228 } 229 230 /** 231 * Returns true if other Entities should be prevented from moving through this Entity. 232 */ 233 public boolean canBeCollidedWith() 234 { 235 return !this.isDead; 236 } 237 238 /** 239 * Will get destroyed next tick. 240 */ 241 public void setDead() 242 { 243 if (this.field_82345_h) 244 { 245 for (int var1 = 0; var1 < this.getSizeInventory(); ++var1) 246 { 247 ItemStack var2 = this.getStackInSlot(var1); 248 249 if (var2 != null) 250 { 251 float var3 = this.rand.nextFloat() * 0.8F + 0.1F; 252 float var4 = this.rand.nextFloat() * 0.8F + 0.1F; 253 float var5 = this.rand.nextFloat() * 0.8F + 0.1F; 254 255 while (var2.stackSize > 0) 256 { 257 int var6 = this.rand.nextInt(21) + 10; 258 259 if (var6 > var2.stackSize) 260 { 261 var6 = var2.stackSize; 262 } 263 264 var2.stackSize -= var6; 265 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())); 266 267 if (var2.hasTagCompound()) 268 { 269 var7.item.setTagCompound((NBTTagCompound)var2.getTagCompound().copy()); 270 } 271 272 float var8 = 0.05F; 273 var7.motionX = (double)((float)this.rand.nextGaussian() * var8); 274 var7.motionY = (double)((float)this.rand.nextGaussian() * var8 + 0.2F); 275 var7.motionZ = (double)((float)this.rand.nextGaussian() * var8); 276 this.worldObj.spawnEntityInWorld(var7); 277 } 278 } 279 } 280 } 281 282 super.setDead(); 283 284 if (this.field_82344_g != null) 285 { 286 this.field_82344_g.update(); 287 } 288 } 289 290 /** 291 * Teleports the entity to another dimension. Params: Dimension number to teleport to 292 */ 293 public void travelToDimension(int par1) 294 { 295 this.field_82345_h = false; 296 super.travelToDimension(par1); 297 } 298 299 /** 300 * Called to update the entity's position/logic. 301 */ 302 public void onUpdate() 303 { 304 if (this.field_82344_g != null) 305 { 306 this.field_82344_g.update(); 307 } 308 309 if (this.func_70496_j() > 0) 310 { 311 this.func_70497_h(this.func_70496_j() - 1); 312 } 313 314 if (this.getDamage() > 0) 315 { 316 this.setDamage(this.getDamage() - 1); 317 } 318 319 if (this.posY < -64.0D) 320 { 321 this.kill(); 322 } 323 324 if (this.isMinecartPowered() && this.rand.nextInt(4) == 0 && minecartType == 2 && getClass() == EntityMinecart.class) 325 { 326 this.worldObj.spawnParticle("largesmoke", this.posX, this.posY + 0.8D, this.posZ, 0.0D, 0.0D, 0.0D); 327 } 328 329 if (this.worldObj.isRemote) 330 { 331 if (this.turnProgress > 0) 332 { 333 double var45 = this.posX + (this.minecartX - this.posX) / (double)this.turnProgress; 334 double var46 = this.posY + (this.minecartY - this.posY) / (double)this.turnProgress; 335 double var5 = this.posZ + (this.minecartZ - this.posZ) / (double)this.turnProgress; 336 double var7 = MathHelper.wrapAngleTo180_double(this.minecartYaw - (double)this.rotationYaw); 337 this.rotationYaw = (float)((double)this.rotationYaw + var7 / (double)this.turnProgress); 338 this.rotationPitch = (float)((double)this.rotationPitch + (this.minecartPitch - (double)this.rotationPitch) / (double)this.turnProgress); 339 --this.turnProgress; 340 this.setPosition(var45, var46, var5); 341 this.setRotation(this.rotationYaw, this.rotationPitch); 342 } 343 else 344 { 345 this.setPosition(this.posX, this.posY, this.posZ); 346 this.setRotation(this.rotationYaw, this.rotationPitch); 347 } 348 } 349 else 350 { 351 this.prevPosX = this.posX; 352 this.prevPosY = this.posY; 353 this.prevPosZ = this.posZ; 354 this.motionY -= 0.03999999910593033D; 355 int var1 = MathHelper.floor_double(this.posX); 356 int var2 = MathHelper.floor_double(this.posY); 357 int var3 = MathHelper.floor_double(this.posZ); 358 359 if (BlockRail.isRailBlockAt(this.worldObj, var1, var2 - 1, var3)) 360 { 361 --var2; 362 } 363 364 double var4 = 0.4D; 365 double var6 = 0.0078125D; 366 int var8 = this.worldObj.getBlockId(var1, var2, var3); 367 368 if (canUseRail() && BlockRail.isRailBlock(var8)) 369 { 370 this.fallDistance = 0.0F; 371 Vec3 var9 = this.func_70489_a(this.posX, this.posY, this.posZ); 372 int var10 = ((BlockRail)Block.blocksList[var8]).getBasicRailMetadata(worldObj, this, var1, var2, var3); 373 this.posY = (double)var2; 374 boolean var11 = false; 375 boolean var12 = false; 376 377 if (var8 == Block.railPowered.blockID) 378 { 379 var11 = (worldObj.getBlockMetadata(var1, var2, var3) & 8) != 0; 380 var12 = !var11; 381 } 382 383 if (((BlockRail)Block.blocksList[var8]).isPowered()) 384 { 385 var10 &= 7; 386 } 387 388 if (var10 >= 2 && var10 <= 5) 389 { 390 this.posY = (double)(var2 + 1); 391 } 392 393 adjustSlopeVelocities(var10); 394 395 int[][] var13 = field_70500_g[var10]; 396 double var14 = (double)(var13[1][0] - var13[0][0]); 397 double var16 = (double)(var13[1][2] - var13[0][2]); 398 double var18 = Math.sqrt(var14 * var14 + var16 * var16); 399 double var20 = this.motionX * var14 + this.motionZ * var16; 400 401 if (var20 < 0.0D) 402 { 403 var14 = -var14; 404 var16 = -var16; 405 } 406 407 double var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 408 this.motionX = var22 * var14 / var18; 409 this.motionZ = var22 * var16 / var18; 410 double var24; 411 double var26; 412 413 if (this.riddenByEntity != null) 414 { 415 var24 = this.riddenByEntity.motionX * this.riddenByEntity.motionX + this.riddenByEntity.motionZ * this.riddenByEntity.motionZ; 416 var26 = this.motionX * this.motionX + this.motionZ * this.motionZ; 417 418 if (var24 > 1.0E-4D && var26 < 0.01D) 419 { 420 this.motionX += this.riddenByEntity.motionX * 0.1D; 421 this.motionZ += this.riddenByEntity.motionZ * 0.1D; 422 var12 = false; 423 } 424 } 425 426 if (var12 && shouldDoRailFunctions()) 427 { 428 var24 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 429 430 if (var24 < 0.03D) 431 { 432 this.motionX *= 0.0D; 433 this.motionY *= 0.0D; 434 this.motionZ *= 0.0D; 435 } 436 else 437 { 438 this.motionX *= 0.5D; 439 this.motionY *= 0.0D; 440 this.motionZ *= 0.5D; 441 } 442 } 443 444 var24 = 0.0D; 445 var26 = (double)var1 + 0.5D + (double)var13[0][0] * 0.5D; 446 double var28 = (double)var3 + 0.5D + (double)var13[0][2] * 0.5D; 447 double var30 = (double)var1 + 0.5D + (double)var13[1][0] * 0.5D; 448 double var32 = (double)var3 + 0.5D + (double)var13[1][2] * 0.5D; 449 var14 = var30 - var26; 450 var16 = var32 - var28; 451 double var34; 452 double var36; 453 454 if (var14 == 0.0D) 455 { 456 this.posX = (double)var1 + 0.5D; 457 var24 = this.posZ - (double)var3; 458 } 459 else if (var16 == 0.0D) 460 { 461 this.posZ = (double)var3 + 0.5D; 462 var24 = this.posX - (double)var1; 463 } 464 else 465 { 466 var34 = this.posX - var26; 467 var36 = this.posZ - var28; 468 var24 = (var34 * var14 + var36 * var16) * 2.0D; 469 } 470 471 this.posX = var26 + var14 * var24; 472 this.posZ = var28 + var16 * var24; 473 this.setPosition(this.posX, this.posY + (double)this.yOffset, this.posZ); 474 475 moveMinecartOnRail(var1, var2, var3); 476 477 if (var13[0][1] != 0 && MathHelper.floor_double(this.posX) - var1 == var13[0][0] && MathHelper.floor_double(this.posZ) - var3 == var13[0][2]) 478 { 479 this.setPosition(this.posX, this.posY + (double)var13[0][1], this.posZ); 480 } 481 else if (var13[1][1] != 0 && MathHelper.floor_double(this.posX) - var1 == var13[1][0] && MathHelper.floor_double(this.posZ) - var3 == var13[1][2]) 482 { 483 this.setPosition(this.posX, this.posY + (double)var13[1][1], this.posZ); 484 } 485 486 applyDragAndPushForces(); 487 488 Vec3 var52 = this.func_70489_a(this.posX, this.posY, this.posZ); 489 490 if (var52 != null && var9 != null) 491 { 492 double var39 = (var9.yCoord - var52.yCoord) * 0.05D; 493 var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 494 495 if (var22 > 0.0D) 496 { 497 this.motionX = this.motionX / var22 * (var22 + var39); 498 this.motionZ = this.motionZ / var22 * (var22 + var39); 499 } 500 501 this.setPosition(this.posX, var52.yCoord, this.posZ); 502 } 503 504 int var51 = MathHelper.floor_double(this.posX); 505 int var53 = MathHelper.floor_double(this.posZ); 506 507 if (var51 != var1 || var53 != var3) 508 { 509 var22 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 510 this.motionX = var22 * (double)(var51 - var1); 511 this.motionZ = var22 * (double)(var53 - var3); 512 } 513 514 double var41; 515 516 updatePushForces(); 517 518 if(shouldDoRailFunctions()) 519 { 520 ((BlockRail)Block.blocksList[var8]).onMinecartPass(worldObj, this, var1, var2, var3); 521 } 522 523 if (var11 && shouldDoRailFunctions()) 524 { 525 var41 = Math.sqrt(this.motionX * this.motionX + this.motionZ * this.motionZ); 526 527 if (var41 > 0.01D) 528 { 529 double var43 = 0.06D; 530 this.motionX += this.motionX / var41 * var43; 531 this.motionZ += this.motionZ / var41 * var43; 532 } 533 else if (var10 == 1) 534 { 535 if (this.worldObj.isBlockNormalCube(var1 - 1, var2, var3)) 536 { 537 this.motionX = 0.02D; 538 } 539 else if (this.worldObj.isBlockNormalCube(var1 + 1, var2, var3)) 540 { 541 this.motionX = -0.02D; 542 } 543 } 544 else if (var10 == 0) 545 { 546 if (this.worldObj.isBlockNormalCube(var1, var2, var3 - 1)) 547 { 548 this.motionZ = 0.02D; 549 } 550 else if (this.worldObj.isBlockNormalCube(var1, var2, var3 + 1)) 551 { 552 this.motionZ = -0.02D; 553 } 554 } 555 } 556 } 557 else 558 { 559 moveMinecartOffRail(var1, var2, var3); 560 } 561 562 this.doBlockCollisions(); 563 this.rotationPitch = 0.0F; 564 double var47 = this.prevPosX - this.posX; 565 double var48 = this.prevPosZ - this.posZ; 566 567 if (var47 * var47 + var48 * var48 > 0.001D) 568 { 569 this.rotationYaw = (float)(Math.atan2(var48, var47) * 180.0D / Math.PI); 570 571 if (this.field_70499_f) 572 { 573 this.rotationYaw += 180.0F; 574 } 575 } 576 577 double var49 = (double)MathHelper.wrapAngleTo180_float(this.rotationYaw - this.prevRotationYaw); 578 579 if (var49 < -170.0D || var49 >= 170.0D) 580 { 581 this.rotationYaw += 180.0F; 582 this.field_70499_f = !this.field_70499_f; 583 } 584 585 this.setRotation(this.rotationYaw, this.rotationPitch); 586 587 AxisAlignedBB box = null; 588 if (getCollisionHandler() != null) 589 { 590 box = getCollisionHandler().getMinecartCollisionBox(this); 591 } 592 else 593 { 594 box = boundingBox.expand(0.2D, 0.0D, 0.2D); 595 } 596 597 List var15 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, box); 598 599 if (var15 != null && !var15.isEmpty()) 600 { 601 for (int var50 = 0; var50 < var15.size(); ++var50) 602 { 603 Entity var17 = (Entity)var15.get(var50); 604 605 if (var17 != this.riddenByEntity && var17.canBePushed() && var17 instanceof EntityMinecart) 606 { 607 var17.applyEntityCollision(this); 608 } 609 } 610 } 611 612 if (this.riddenByEntity != null && this.riddenByEntity.isDead) 613 { 614 if (this.riddenByEntity.ridingEntity == this) 615 { 616 this.riddenByEntity.ridingEntity = null; 617 } 618 619 this.riddenByEntity = null; 620 } 621 622 updateFuel(); 623 MinecraftForge.EVENT_BUS.post(new MinecartUpdateEvent(this, var1, var2, var3)); 624 } 625 } 626 627 @SideOnly(Side.CLIENT) 628 public Vec3 func_70495_a(double par1, double par3, double par5, double par7) 629 { 630 int var9 = MathHelper.floor_double(par1); 631 int var10 = MathHelper.floor_double(par3); 632 int var11 = MathHelper.floor_double(par5); 633 634 if (BlockRail.isRailBlockAt(this.worldObj, var9, var10 - 1, var11)) 635 { 636 --var10; 637 } 638 639 int var12 = this.worldObj.getBlockId(var9, var10, var11); 640 641 if (!BlockRail.isRailBlock(var12)) 642 { 643 return null; 644 } 645 else 646 { 647 int var13 = ((BlockRail)Block.blocksList[var12]).getBasicRailMetadata(worldObj, this, var9, var10, var11); 648 649 par3 = (double)var10; 650 651 if (var13 >= 2 && var13 <= 5) 652 { 653 par3 = (double)(var10 + 1); 654 } 655 656 int[][] var14 = field_70500_g[var13]; 657 double var15 = (double)(var14[1][0] - var14[0][0]); 658 double var17 = (double)(var14[1][2] - var14[0][2]); 659 double var19 = Math.sqrt(var15 * var15 + var17 * var17); 660 var15 /= var19; 661 var17 /= var19; 662 par1 += var15 * par7; 663 par5 += var17 * par7; 664 665 if (var14[0][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[0][0] && MathHelper.floor_double(par5) - var11 == var14[0][2]) 666 { 667 par3 += (double)var14[0][1]; 668 } 669 else if (var14[1][1] != 0 && MathHelper.floor_double(par1) - var9 == var14[1][0] && MathHelper.floor_double(par5) - var11 == var14[1][2]) 670 { 671 par3 += (double)var14[1][1]; 672 } 673 674 return this.func_70489_a(par1, par3, par5); 675 } 676 } 677 678 public Vec3 func_70489_a(double par1, double par3, double par5) 679 { 680 int var7 = MathHelper.floor_double(par1); 681 int var8 = MathHelper.floor_double(par3); 682 int var9 = MathHelper.floor_double(par5); 683 684 if (BlockRail.isRailBlockAt(this.worldObj, var7, var8 - 1, var9)) 685 { 686 --var8; 687 } 688 689 int var10 = this.worldObj.getBlockId(var7, var8, var9); 690 691 if (BlockRail.isRailBlock(var10)) 692 { 693 int var11 = ((BlockRail)Block.blocksList[var10]).getBasicRailMetadata(worldObj, this, var7, var8, var9); 694 par3 = (double)var8; 695 696 if (var11 >= 2 && var11 <= 5) 697 { 698 par3 = (double)(var8 + 1); 699 } 700 701 int[][] var12 = field_70500_g[var11]; 702 double var13 = 0.0D; 703 double var15 = (double)var7 + 0.5D + (double)var12[0][0] * 0.5D; 704 double var17 = (double)var8 + 0.5D + (double)var12[0][1] * 0.5D; 705 double var19 = (double)var9 + 0.5D + (double)var12[0][2] * 0.5D; 706 double var21 = (double)var7 + 0.5D + (double)var12[1][0] * 0.5D; 707 double var23 = (double)var8 + 0.5D + (double)var12[1][1] * 0.5D; 708 double var25 = (double)var9 + 0.5D + (double)var12[1][2] * 0.5D; 709 double var27 = var21 - var15; 710 double var29 = (var23 - var17) * 2.0D; 711 double var31 = var25 - var19; 712 713 if (var27 == 0.0D) 714 { 715 par1 = (double)var7 + 0.5D; 716 var13 = par5 - (double)var9; 717 } 718 else if (var31 == 0.0D) 719 { 720 par5 = (double)var9 + 0.5D; 721 var13 = par1 - (double)var7; 722 } 723 else 724 { 725 double var33 = par1 - var15; 726 double var35 = par5 - var19; 727 var13 = (var33 * var27 + var35 * var31) * 2.0D; 728 } 729 730 par1 = var15 + var27 * var13; 731 par3 = var17 + var29 * var13; 732 par5 = var19 + var31 * var13; 733 734 if (var29 < 0.0D) 735 { 736 ++par3; 737 } 738 739 if (var29 > 0.0D) 740 { 741 par3 += 0.5D; 742 } 743 744 return this.worldObj.getWorldVec3Pool().getVecFromPool(par1, par3, par5); 745 } 746 else 747 { 748 return null; 749 } 750 } 751 752 /** 753 * (abstract) Protected helper method to write subclass entity data to NBT. 754 */ 755 protected void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) 756 { 757 par1NBTTagCompound.setInteger("Type", this.minecartType); 758 759 if (isPoweredCart()) 760 { 761 par1NBTTagCompound.setDouble("PushX", this.pushX); 762 par1NBTTagCompound.setDouble("PushZ", this.pushZ); 763 par1NBTTagCompound.setInteger("Fuel", this.fuel); 764 } 765 766 if (getSizeInventory() > 0) 767 { 768 NBTTagList var2 = new NBTTagList(); 769 770 for (int var3 = 0; var3 < this.cargoItems.length; ++var3) 771 { 772 if (this.cargoItems[var3] != null) 773 { 774 NBTTagCompound var4 = new NBTTagCompound(); 775 var4.setByte("Slot", (byte)var3); 776 this.cargoItems[var3].writeToNBT(var4); 777 var2.appendTag(var4); 778 } 779 } 780 781 par1NBTTagCompound.setTag("Items", var2); 782 } 783 } 784 785 /** 786 * (abstract) Protected helper method to read subclass entity data from NBT. 787 */ 788 protected void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) 789 { 790 this.minecartType = par1NBTTagCompound.getInteger("Type"); 791 792 if (isPoweredCart()) 793 { 794 this.pushX = par1NBTTagCompound.getDouble("PushX"); 795 this.pushZ = par1NBTTagCompound.getDouble("PushZ"); 796 try 797 { 798 this.fuel = par1NBTTagCompound.getInteger("Fuel"); 799 } 800 catch (ClassCastException e) 801 { 802 this.fuel = par1NBTTagCompound.getShort("Fuel"); 803 } 804 } 805 806 if (getSizeInventory() > 0) 807 { 808 NBTTagList var2 = par1NBTTagCompound.getTagList("Items"); 809 this.cargoItems = new ItemStack[this.getSizeInventory()]; 810 811 for (int var3 = 0; var3 < var2.tagCount(); ++var3) 812 { 813 NBTTagCompound var4 = (NBTTagCompound)var2.tagAt(var3); 814 int var5 = var4.getByte("Slot") & 255; 815 816 if (var5 >= 0 && var5 < this.cargoItems.length) 817 { 818 this.cargoItems[var5] = ItemStack.loadItemStackFromNBT(var4); 819 } 820 } 821 } 822 } 823 824 @SideOnly(Side.CLIENT) 825 public float getShadowSize() 826 { 827 return 0.0F; 828 } 829 830 /** 831 * Applies a velocity to each of the entities pushing them away from each other. Args: entity 832 */ 833 public void applyEntityCollision(Entity par1Entity) 834 { 835 MinecraftForge.EVENT_BUS.post(new MinecartCollisionEvent(this, par1Entity)); 836 if (getCollisionHandler() != null) 837 { 838 getCollisionHandler().onEntityCollision(this, par1Entity); 839 return; 840 } 841 if (!this.worldObj.isRemote) 842 { 843 if (par1Entity != this.riddenByEntity) 844 { 845 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) 846 { 847 par1Entity.mountEntity(this); 848 } 849 850 double var2 = par1Entity.posX - this.posX; 851 double var4 = par1Entity.posZ - this.posZ; 852 double var6 = var2 * var2 + var4 * var4; 853 854 if (var6 >= 9.999999747378752E-5D) 855 { 856 var6 = (double)MathHelper.sqrt_double(var6); 857 var2 /= var6; 858 var4 /= var6; 859 double var8 = 1.0D / var6; 860 861 if (var8 > 1.0D) 862 { 863 var8 = 1.0D; 864 } 865 866 var2 *= var8; 867 var4 *= var8; 868 var2 *= 0.10000000149011612D; 869 var4 *= 0.10000000149011612D; 870 var2 *= (double)(1.0F - this.entityCollisionReduction); 871 var4 *= (double)(1.0F - this.entityCollisionReduction); 872 var2 *= 0.5D; 873 var4 *= 0.5D; 874 875 if (par1Entity instanceof EntityMinecart) 876 { 877 double var10 = par1Entity.posX - this.posX; 878 double var12 = par1Entity.posZ - this.posZ; 879 Vec3 var14 = this.worldObj.getWorldVec3Pool().getVecFromPool(var10, 0.0D, var12).normalize(); 880 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(); 881 double var16 = Math.abs(var14.dotProduct(var15)); 882 883 if (var16 < 0.800000011920929D) 884 { 885 return; 886 } 887 888 double var18 = par1Entity.motionX + this.motionX; 889 double var20 = par1Entity.motionZ + this.motionZ; 890 891 if (((EntityMinecart)par1Entity).isPoweredCart() && !isPoweredCart()) 892 { 893 this.motionX *= 0.20000000298023224D; 894 this.motionZ *= 0.20000000298023224D; 895 this.addVelocity(par1Entity.motionX - var2, 0.0D, par1Entity.motionZ - var4); 896 par1Entity.motionX *= 0.949999988079071D; 897 par1Entity.motionZ *= 0.949999988079071D; 898 } 899 else if (!((EntityMinecart)par1Entity).isPoweredCart() && isPoweredCart()) 900 { 901 par1Entity.motionX *= 0.20000000298023224D; 902 par1Entity.motionZ *= 0.20000000298023224D; 903 par1Entity.addVelocity(this.motionX + var2, 0.0D, this.motionZ + var4); 904 this.motionX *= 0.949999988079071D; 905 this.motionZ *= 0.949999988079071D; 906 } 907 else 908 { 909 var18 /= 2.0D; 910 var20 /= 2.0D; 911 this.motionX *= 0.20000000298023224D; 912 this.motionZ *= 0.20000000298023224D; 913 this.addVelocity(var18 - var2, 0.0D, var20 - var4); 914 par1Entity.motionX *= 0.20000000298023224D; 915 par1Entity.motionZ *= 0.20000000298023224D; 916 par1Entity.addVelocity(var18 + var2, 0.0D, var20 + var4); 917 } 918 } 919 else 920 { 921 this.addVelocity(-var2, 0.0D, -var4); 922 par1Entity.addVelocity(var2 / 4.0D, 0.0D, var4 / 4.0D); 923 } 924 } 925 } 926 } 927 } 928 929 /** 930 * Returns the number of slots in the inventory. 931 */ 932 public int getSizeInventory() 933 { 934 return (minecartType == 1 && getClass() == EntityMinecart.class ? 27 : 0); 935 } 936 937 /** 938 * Returns the stack in slot i 939 */ 940 public ItemStack getStackInSlot(int par1) 941 { 942 return this.cargoItems[par1]; 943 } 944 945 /** 946 * Removes from an inventory slot (first arg) up to a specified number (second arg) of items and returns them in a 947 * new stack. 948 */ 949 public ItemStack decrStackSize(int par1, int par2) 950 { 951 if (this.cargoItems[par1] != null) 952 { 953 ItemStack var3; 954 955 if (this.cargoItems[par1].stackSize <= par2) 956 { 957 var3 = this.cargoItems[par1]; 958 this.cargoItems[par1] = null; 959 return var3; 960 } 961 else 962 { 963 var3 = this.cargoItems[par1].splitStack(par2); 964 965 if (this.cargoItems[par1].stackSize == 0) 966 { 967 this.cargoItems[par1] = null; 968 } 969 970 return var3; 971 } 972 } 973 else 974 { 975 return null; 976 } 977 } 978 979 /** 980 * When some containers are closed they call this on each slot, then drop whatever it returns as an EntityItem - 981 * like when you close a workbench GUI. 982 */ 983 public ItemStack getStackInSlotOnClosing(int par1) 984 { 985 if (this.cargoItems[par1] != null) 986 { 987 ItemStack var2 = this.cargoItems[par1]; 988 this.cargoItems[par1] = null; 989 return var2; 990 } 991 else 992 { 993 return null; 994 } 995 } 996 997 /** 998 * Sets the given item stack to the specified slot in the inventory (can be crafting or armor sections). 999 */ 1000 public void setInventorySlotContents(int par1, ItemStack par2ItemStack) 1001 { 1002 this.cargoItems[par1] = par2ItemStack; 1003 1004 if (par2ItemStack != null && par2ItemStack.stackSize > this.getInventoryStackLimit()) 1005 { 1006 par2ItemStack.stackSize = this.getInventoryStackLimit(); 1007 } 1008 } 1009 1010 /** 1011 * Returns the name of the inventory. 1012 */ 1013 public String getInvName() 1014 { 1015 return "container.minecart"; 1016 } 1017 1018 /** 1019 * Returns the maximum stack size for a inventory slot. Seems to always be 64, possibly will be extended. *Isn't 1020 * this more of a set than a get?* 1021 */ 1022 public int getInventoryStackLimit() 1023 { 1024 return 64; 1025 } 1026 1027 /** 1028 * Called when an the contents of an Inventory change, usually 1029 */ 1030 public void onInventoryChanged() {} 1031 1032 /** 1033 * Called when a player interacts with a mob. e.g. gets milk from a cow, gets into the saddle on a pig. 1034 */ 1035 public boolean interact(EntityPlayer par1EntityPlayer) 1036 { 1037 if (MinecraftForge.EVENT_BUS.post(new MinecartInteractEvent(this, par1EntityPlayer))) 1038 { 1039 return true; 1040 } 1041 1042 if (canBeRidden()) 1043 { 1044 if (this.riddenByEntity != null && this.riddenByEntity instanceof EntityPlayer && this.riddenByEntity != par1EntityPlayer) 1045 { 1046 return true; 1047 } 1048 1049 if (!this.worldObj.isRemote) 1050 { 1051 par1EntityPlayer.mountEntity(this); 1052 } 1053 } 1054 else if (getSizeInventory() > 0) 1055 { 1056 if (!this.worldObj.isRemote) 1057 { 1058 par1EntityPlayer.displayGUIChest(this); 1059 } 1060 } 1061 else if (this.minecartType == 2 && getClass() == EntityMinecart.class) 1062 { 1063 ItemStack var2 = par1EntityPlayer.inventory.getCurrentItem(); 1064 1065 if (var2 != null && var2.itemID == Item.coal.shiftedIndex) 1066 { 1067 if (--var2.stackSize == 0) 1068 { 1069 par1EntityPlayer.inventory.setInventorySlotContents(par1EntityPlayer.inventory.currentItem, (ItemStack)null); 1070 } 1071 1072 this.fuel += 3600; 1073 } 1074 1075 this.pushX = this.posX - par1EntityPlayer.posX; 1076 this.pushZ = this.posZ - par1EntityPlayer.posZ; 1077 } 1078 1079 return true; 1080 } 1081 1082 @SideOnly(Side.CLIENT) 1083 1084 /** 1085 * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX, 1086 * posY, posZ, yaw, pitch 1087 */ 1088 public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9) 1089 { 1090 this.minecartX = par1; 1091 this.minecartY = par3; 1092 this.minecartZ = par5; 1093 this.minecartYaw = (double)par7; 1094 this.minecartPitch = (double)par8; 1095 this.turnProgress = par9 + 2; 1096 this.motionX = this.velocityX; 1097 this.motionY = this.velocityY; 1098 this.motionZ = this.velocityZ; 1099 } 1100 1101 @SideOnly(Side.CLIENT) 1102 1103 /** 1104 * Sets the velocity to the args. Args: x, y, z 1105 */ 1106 public void setVelocity(double par1, double par3, double par5) 1107 { 1108 this.velocityX = this.motionX = par1; 1109 this.velocityY = this.motionY = par3; 1110 this.velocityZ = this.motionZ = par5; 1111 } 1112 1113 /** 1114 * Do not make give this method the name canInteractWith because it clashes with Container 1115 */ 1116 public boolean isUseableByPlayer(EntityPlayer par1EntityPlayer) 1117 { 1118 return this.isDead ? false : par1EntityPlayer.getDistanceSqToEntity(this) <= 64.0D; 1119 } 1120 1121 /** 1122 * Is this minecart powered (Fuel > 0) 1123 */ 1124 public boolean isMinecartPowered() 1125 { 1126 return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0; 1127 } 1128 1129 /** 1130 * Set if this minecart is powered (Fuel > 0) 1131 */ 1132 protected void setMinecartPowered(boolean par1) 1133 { 1134 if (par1) 1135 { 1136 this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) | 1))); 1137 } 1138 else 1139 { 1140 this.dataWatcher.updateObject(16, Byte.valueOf((byte)(this.dataWatcher.getWatchableObjectByte(16) & -2))); 1141 } 1142 } 1143 1144 public void openChest() {} 1145 1146 public void closeChest() {} 1147 1148 /** 1149 * Sets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over 1150 * 40. 1151 */ 1152 public void setDamage(int par1) 1153 { 1154 this.dataWatcher.updateObject(19, Integer.valueOf(par1)); 1155 } 1156 1157 /** 1158 * Gets the current amount of damage the minecart has taken. Decreases over time. The cart breaks when this is over 1159 * 40. 1160 */ 1161 public int getDamage() 1162 { 1163 return this.dataWatcher.getWatchableObjectInt(19); 1164 } 1165 1166 public void func_70497_h(int par1) 1167 { 1168 this.dataWatcher.updateObject(17, Integer.valueOf(par1)); 1169 } 1170 1171 public int func_70496_j() 1172 { 1173 return this.dataWatcher.getWatchableObjectInt(17); 1174 } 1175 1176 public void func_70494_i(int par1) 1177 { 1178 this.dataWatcher.updateObject(18, Integer.valueOf(par1)); 1179 } 1180 1181 public int func_70493_k() 1182 { 1183 return this.dataWatcher.getWatchableObjectInt(18); 1184 } 1185 1186 /** 1187 * Drops the cart as a item. The exact item dropped is defined by getItemDropped(). 1188 */ 1189 public void dropCartAsItem() 1190 { 1191 for(ItemStack item : getItemsDropped()) 1192 { 1193 entityDropItem(item, 0); 1194 } 1195 } 1196 1197 /** 1198 * Override this to define which items your cart drops when broken. 1199 * This does not include items contained in the inventory, 1200 * that is handled elsewhere. 1201 * @return A list of items dropped. 1202 */ 1203 public List<ItemStack> getItemsDropped() 1204 { 1205 List<ItemStack> items = new ArrayList<ItemStack>(); 1206 items.add(new ItemStack(Item.minecartEmpty)); 1207 1208 switch(minecartType) 1209 { 1210 case 1: 1211 items.add(new ItemStack(Block.chest)); 1212 break; 1213 case 2: 1214 items.add(new ItemStack(Block.stoneOvenIdle)); 1215 break; 1216 } 1217 return items; 1218 } 1219 1220 /** 1221 * This function returns an ItemStack that represents this cart. 1222 * This should be an ItemStack that can be used by the player to place the cart. 1223 * This is the item that was registered with the cart via the registerMinecart function, 1224 * but is not necessary the item the cart drops when destroyed. 1225 * @return An ItemStack that can be used to place the cart. 1226 */ 1227 public ItemStack getCartItem() 1228 { 1229 return MinecartRegistry.getItemForCart(this); 1230 } 1231 1232 /** 1233 * Returns true if this cart is self propelled. 1234 * @return True if powered. 1235 */ 1236 public boolean isPoweredCart() 1237 { 1238 return minecartType == 2 && getClass() == EntityMinecart.class; 1239 } 1240 1241 /** 1242 * Returns true if this cart is a storage cart 1243 * Some carts may have inventories but not be storage carts 1244 * and some carts without inventories may be storage carts. 1245 * @return True if this cart should be classified as a storage cart. 1246 */ 1247 public boolean isStorageCart() 1248 { 1249 return minecartType == 1 && getClass() == EntityMinecart.class; 1250 } 1251 1252 /** 1253 * Returns true if this cart can be ridden by an Entity. 1254 * @return True if this cart can be ridden. 1255 */ 1256 public boolean canBeRidden() 1257 { 1258 if(minecartType == 0 && getClass() == EntityMinecart.class) 1259 { 1260 return true; 1261 } 1262 return false; 1263 } 1264 1265 /** 1266 * Returns true if this cart can currently use rails. 1267 * This function is mainly used to gracefully detach a minecart from a rail. 1268 * @return True if the minecart can use rails. 1269 */ 1270 public boolean canUseRail() 1271 { 1272 return canUseRail; 1273 } 1274 1275 /** 1276 * Set whether the minecart can use rails. 1277 * This function is mainly used to gracefully detach a minecart from a rail. 1278 * @param use Whether the minecart can currently use rails. 1279 */ 1280 public void setCanUseRail(boolean use) 1281 { 1282 canUseRail = use; 1283 } 1284 1285 /** 1286 * Return false if this cart should not call IRail.onMinecartPass() and should ignore Powered Rails. 1287 * @return True if this cart should call IRail.onMinecartPass(). 1288 */ 1289 public boolean shouldDoRailFunctions() 1290 { 1291 return true; 1292 } 1293 1294 /** 1295 * Simply returns the minecartType variable. 1296 * @return minecartType 1297 */ 1298 public int getMinecartType() 1299 { 1300 return minecartType; 1301 } 1302 1303 /** 1304 * Gets the current global Minecart Collision handler if none 1305 * is registered, returns null 1306 * @return The collision handler or null 1307 */ 1308 public static IMinecartCollisionHandler getCollisionHandler() 1309 { 1310 return collisionHandler; 1311 } 1312 1313 /** 1314 * Sets the global Minecart Collision handler, overwrites any 1315 * that is currently set. 1316 * @param handler The new handler 1317 */ 1318 public static void setCollisionHandler(IMinecartCollisionHandler handler) 1319 { 1320 collisionHandler = handler; 1321 } 1322 1323 /** 1324 * Carts should return their drag factor here 1325 * @return The drag rate. 1326 */ 1327 protected double getDrag() 1328 { 1329 return riddenByEntity != null ? defaultDragRidden : defaultDragEmpty; 1330 } 1331 1332 /** 1333 * Moved to allow overrides. 1334 * This code applies drag and updates push forces. 1335 */ 1336 protected void applyDragAndPushForces() 1337 { 1338 if(isPoweredCart()) 1339 { 1340 double d27 = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ); 1341 if(d27 > 0.01D) 1342 { 1343 pushX /= d27; 1344 pushZ /= d27; 1345 double d29 = 0.04; 1346 motionX *= 0.8D; 1347 motionY *= 0.0D; 1348 motionZ *= 0.8D; 1349 motionX += pushX * d29; 1350 motionZ += pushZ * d29; 1351 } 1352 else 1353 { 1354 motionX *= 0.9D; 1355 motionY *= 0.0D; 1356 motionZ *= 0.9D; 1357 } 1358 } 1359 motionX *= getDrag(); 1360 motionY *= 0.0D; 1361 motionZ *= getDrag(); 1362 } 1363 1364 /** 1365 * Moved to allow overrides. 1366 * This code updates push forces. 1367 */ 1368 protected void updatePushForces() 1369 { 1370 if(isPoweredCart()) 1371 { 1372 double push = MathHelper.sqrt_double(pushX * pushX + pushZ * pushZ); 1373 if(push > 0.01D && motionX * motionX + motionZ * motionZ > 0.001D) 1374 { 1375 pushX /= push; 1376 pushZ /= push; 1377 if(pushX * motionX + pushZ * motionZ < 0.0D) 1378 { 1379 pushX = 0.0D; 1380 pushZ = 0.0D; 1381 } 1382 else 1383 { 1384 pushX = motionX; 1385 pushZ = motionZ; 1386 } 1387 } 1388 } 1389 } 1390 1391 /** 1392 * Moved to allow overrides. 1393 * This code handles minecart movement and speed capping when on a rail. 1394 */ 1395 protected void moveMinecartOnRail(int i, int j, int k) 1396 { 1397 int id = worldObj.getBlockId(i, j, k); 1398 if (!BlockRail.isRailBlock(id)) 1399 { 1400 return; 1401 } 1402 float railMaxSpeed = ((BlockRail)Block.blocksList[id]).getRailMaxSpeed(worldObj, this, i, j, k); 1403 1404 double maxSpeed = Math.min(railMaxSpeed, getMaxSpeedRail()); 1405 double mX = motionX; 1406 double mZ = motionZ; 1407 if(riddenByEntity != null) 1408 { 1409 mX *= 0.75D; 1410 mZ *= 0.75D; 1411 } 1412 if(mX < -maxSpeed) mX = -maxSpeed; 1413 if(mX > maxSpeed) mX = maxSpeed; 1414 if(mZ < -maxSpeed) mZ = -maxSpeed; 1415 if(mZ > maxSpeed) mZ = maxSpeed; 1416 moveEntity(mX, 0.0D, mZ); 1417 } 1418 1419 /** 1420 * Moved to allow overrides. 1421 * This code handles minecart movement and speed capping when not on a rail. 1422 */ 1423 protected void moveMinecartOffRail(int i, int j, int k) 1424 { 1425 double d2 = getMaxSpeedGround(); 1426 if(!onGround) 1427 { 1428 d2 = getMaxSpeedAirLateral(); 1429 } 1430 if(motionX < -d2) motionX = -d2; 1431 if(motionX > d2) motionX = d2; 1432 if(motionZ < -d2) motionZ = -d2; 1433 if(motionZ > d2) motionZ = d2; 1434 double moveY = motionY; 1435 if(getMaxSpeedAirVertical() > 0 && motionY > getMaxSpeedAirVertical()) 1436 { 1437 moveY = getMaxSpeedAirVertical(); 1438 if(Math.abs(motionX) < 0.3f && Math.abs(motionZ) < 0.3f) 1439 { 1440 moveY = 0.15f; 1441 motionY = moveY; 1442 } 1443 } 1444 if(onGround) 1445 { 1446 motionX *= 0.5D; 1447 motionY *= 0.5D; 1448 motionZ *= 0.5D; 1449 } 1450 moveEntity(motionX, moveY, motionZ); 1451 if(!onGround) 1452 { 1453 motionX *= getDragAir(); 1454 motionY *= getDragAir(); 1455 motionZ *= getDragAir(); 1456 } 1457 } 1458 1459 /** 1460 * Moved to allow overrides. 1461 * This code applies fuel consumption. 1462 */ 1463 protected void updateFuel() 1464 { 1465 if (fuel > 0) fuel--; 1466 if (fuel <= 0) pushX = pushZ = 0.0D; 1467 setMinecartPowered(fuel > 0); 1468 } 1469 1470 /** 1471 * Moved to allow overrides, This code handle slopes affecting velocity. 1472 * @param metadata The blocks position metadata 1473 */ 1474 protected void adjustSlopeVelocities(int metadata) 1475 { 1476 double acceleration = 0.0078125D; 1477 if (metadata == 2) 1478 { 1479 motionX -= acceleration; 1480 } 1481 else if (metadata == 3) 1482 { 1483 motionX += acceleration; 1484 } 1485 else if (metadata == 4) 1486 { 1487 motionZ += acceleration; 1488 } 1489 else if (metadata == 5) 1490 { 1491 motionZ -= acceleration; 1492 } 1493 } 1494 1495 /** 1496 * Getters/setters for physics variables 1497 */ 1498 1499 /** 1500 * Returns the carts max speed. 1501 * Carts going faster than 1.1 cause issues with chunk loading. 1502 * Carts cant traverse slopes or corners at greater than 0.5 - 0.6. 1503 * This value is compared with the rails max speed to determine 1504 * the carts current max speed. A normal rails max speed is 0.4. 1505 * @return Carts max speed. 1506 */ 1507 public float getMaxSpeedRail() 1508 { 1509 return maxSpeedRail; 1510 } 1511 1512 public void setMaxSpeedRail(float value) 1513 { 1514 maxSpeedRail = value; 1515 } 1516 1517 public float getMaxSpeedGround() 1518 { 1519 return maxSpeedGround; 1520 } 1521 1522 public void setMaxSpeedGround(float value) 1523 { 1524 maxSpeedGround = value; 1525 } 1526 1527 public float getMaxSpeedAirLateral() 1528 { 1529 return maxSpeedAirLateral; 1530 } 1531 1532 public void setMaxSpeedAirLateral(float value) 1533 { 1534 maxSpeedAirLateral = value; 1535 } 1536 1537 public float getMaxSpeedAirVertical() 1538 { 1539 return maxSpeedAirVertical; 1540 } 1541 1542 public void setMaxSpeedAirVertical(float value) 1543 { 1544 maxSpeedAirVertical = value; 1545 } 1546 1547 public double getDragAir() 1548 { 1549 return dragAir; 1550 } 1551 1552 public void setDragAir(double value) 1553 { 1554 dragAir = value; 1555 } 1556 }