gt:             this.posX += this.motionX;
context: package net.minecraft.entity.projectile;
  
  import cpw.mods.fml.relauncher.Side;
  import cpw.mods.fml.relauncher.SideOnly;
  import java.util.List;
  import net.minecraft.block.Block;
  import net.minecraft.block.material.Material;
  import net.minecraft.enchantment.EnchantmentHelper;
  import net.minecraft.entity.Entity;
  import net.minecraft.entity.EntityLivingBase;
  import net.minecraft.entity.IProjectile;
  import net.minecraft.entity.monster.EntityEnderman;
  import net.minecraft.entity.player.EntityPlayer;
  import net.minecraft.entity.player.EntityPlayerMP;
  import net.minecraft.init.Items;
  import net.minecraft.item.ItemStack;
  import net.minecraft.nbt.NBTTagCompound;
  import net.minecraft.network.play.server.S2BPacketChangeGameState;
  import net.minecraft.util.AxisAlignedBB;
  import net.minecraft.util.DamageSource;
  import net.minecraft.util.MathHelper;
  import net.minecraft.util.MovingObjectPosition;
  import net.minecraft.util.Vec3;
  import net.minecraft.world.World;
  
  public class EntityArrow extends Entity implements IProjectile
  {
      private int field_145791_d = -1;
      private int field_145792_e = -1;
      private int field_145789_f = -1;
      private Block field_145790_g;
      private int inData;
      private boolean inGround;
      /** 1 if the player can pick up the arrow */
      public int canBePickedUp;
      /** Seems to be some sort of timer for animating an arrow. */
      public int arrowShake;
      /** The owner of this arrow. */
      public Entity shootingEntity;
      private int ticksInGround;
      private int ticksInAir;
      private double damage = 2.0D;
      /** The amount of knockback an arrow applies when it hits a mob. */
      private int knockbackStrength;
      private static final String __OBFID = "CL_00001715";
  
      public EntityArrow(World p_i1753_1_)
      {
          super(p_i1753_1_);
          this.renderDistanceWeight = 10.0D;
          this.setSize(0.5F, 0.5F);
      }
  
      public EntityArrow(World p_i1754_1_, double p_i1754_2_, double p_i1754_4_, double p_i1754_6_)
      {
          super(p_i1754_1_);
          this.renderDistanceWeight = 10.0D;
          this.setSize(0.5F, 0.5F);
          this.setPosition(p_i1754_2_, p_i1754_4_, p_i1754_6_);
          this.yOffset = 0.0F;
      }
  
      public EntityArrow(World p_i1755_1_, EntityLivingBase p_i1755_2_, EntityLivingBase p_i1755_3_, float p_i1755_4_, float p_i1755_5_)
      {
          super(p_i1755_1_);
          this.renderDistanceWeight = 10.0D;
          this.shootingEntity = p_i1755_2_;
  
          if (p_i1755_2_ instanceof EntityPlayer)
          {
              this.canBePickedUp = 1;
          }
  
          this.posY = p_i1755_2_.posY + (double)p_i1755_2_.getEyeHeight() - 0.10000000149011612D;
          double d0 = p_i1755_3_.posX - p_i1755_2_.posX;
          double d1 = p_i1755_3_.boundingBox.minY + (double)(p_i1755_3_.height / 3.0F) - this.posY;
          double d2 = p_i1755_3_.posZ - p_i1755_2_.posZ;
          double d3 = (double)MathHelper.sqrt_double(d0 * d0 + d2 * d2);
  
          if (d3 >= 1.0E-7D)
          {
              float f2 = (float)(Math.atan2(d2, d0) * 180.0D / Math.PI) - 90.0F;
              float f3 = (float)(-(Math.atan2(d1, d3) * 180.0D / Math.PI));
              double d4 = d0 / d3;
              double d5 = d2 / d3;
              this.setLocationAndAngles(p_i1755_2_.posX + d4, this.posY, p_i1755_2_.posZ + d5, f2, f3);
              this.yOffset = 0.0F;
              float f4 = (float)d3 * 0.2F;
              this.setThrowableHeading(d0, d1 + (double)f4, d2, p_i1755_4_, p_i1755_5_);
          }
      }
  
      public EntityArrow(World p_i1756_1_, EntityLivingBase p_i1756_2_, float p_i1756_3_)
      {
          super(p_i1756_1_);
          this.renderDistanceWeight = 10.0D;
          this.shootingEntity = p_i1756_2_;
  
          if (p_i1756_2_ instanceof EntityPlayer)
          {
              this.canBePickedUp = 1;
          }
  
          this.setSize(0.5F, 0.5F);
          this.setLocationAndAngles(p_i1756_2_.posX, p_i1756_2_.posY + (double)p_i1756_2_.getEyeHeight(), p_i1756_2_.posZ, p_i1756_2_.rotationYaw, p_i1756_2_.rotationPitch);
          this.posX -= (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
          this.posY -= 0.10000000149011612D;
          this.posZ -= (double)(MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
          this.setPosition(this.posX, this.posY, this.posZ);
          this.yOffset = 0.0F;
          this.motionX = (double)(-MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI));
          this.motionZ = (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI));
          this.motionY = (double)(-MathHelper.sin(this.rotationPitch / 180.0F * (float)Math.PI));
          this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, p_i1756_3_ * 1.5F, 1.0F);
      }
  
      protected void entityInit()
      {
          this.dataWatcher.addObject(16, Byte.valueOf((byte)0));
      }
  
      /**
       * Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction.
       */
      public void setThrowableHeading(double p_70186_1_, double p_70186_3_, double p_70186_5_, float p_70186_7_, float p_70186_8_)
      {
          float f2 = MathHelper.sqrt_double(p_70186_1_ * p_70186_1_ + p_70186_3_ * p_70186_3_ + p_70186_5_ * p_70186_5_);
          p_70186_1_ /= (double)f2;
          p_70186_3_ /= (double)f2;
          p_70186_5_ /= (double)f2;
          p_70186_1_ += this.rand.nextGaussian() * (double)(this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * (double)p_70186_8_;
          p_70186_3_ += this.rand.nextGaussian() * (double)(this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * (double)p_70186_8_;
          p_70186_5_ += this.rand.nextGaussian() * (double)(this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * (double)p_70186_8_;
          p_70186_1_ *= (double)p_70186_7_;
          p_70186_3_ *= (double)p_70186_7_;
          p_70186_5_ *= (double)p_70186_7_;
          this.motionX = p_70186_1_;
          this.motionY = p_70186_3_;
          this.motionZ = p_70186_5_;
          float f3 = MathHelper.sqrt_double(p_70186_1_ * p_70186_1_ + p_70186_5_ * p_70186_5_);
          this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(p_70186_1_, p_70186_5_) * 180.0D / Math.PI);
          this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(p_70186_3_, (double)f3) * 180.0D / Math.PI);
          this.ticksInGround = 0;
      }
  
      /**
       * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX,
       * posY, posZ, yaw, pitch
       */
      @SideOnly(Side.CLIENT)
      public void setPositionAndRotation2(double p_70056_1_, double p_70056_3_, double p_70056_5_, float p_70056_7_, float p_70056_8_, int p_70056_9_)
      {
          this.setPosition(p_70056_1_, p_70056_3_, p_70056_5_);
          this.setRotation(p_70056_7_, p_70056_8_);
      }
  
      /**
       * Sets the velocity to the args. Args: x, y, z
       */
      @SideOnly(Side.CLIENT)
      public void setVelocity(double p_70016_1_, double p_70016_3_, double p_70016_5_)
      {
          this.motionX = p_70016_1_;
          this.motionY = p_70016_3_;
          this.motionZ = p_70016_5_;
  
          if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
          {
              float f = MathHelper.sqrt_double(p_70016_1_ * p_70016_1_ + p_70016_5_ * p_70016_5_);
              this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(p_70016_1_, p_70016_5_) * 180.0D / Math.PI);
              this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(p_70016_3_, (double)f) * 180.0D / Math.PI);
              this.prevRotationPitch = this.rotationPitch;
              this.prevRotationYaw = this.rotationYaw;
              this.setLocationAndAngles(this.posX, this.posY, this.posZ, this.rotationYaw, this.rotationPitch);
              this.ticksInGround = 0;
          }
      }
  
      /**
       * Called to update the entity's position/logic.
       */
      public void onUpdate()
      {
          super.onUpdate();
  
          if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
          {
              float f = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
              this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);
              this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(this.motionY, (double)f) * 180.0D / Math.PI);
          }
  
          Block block = this.worldObj.getBlock(this.field_145791_d, this.field_145792_e, this.field_145789_f);
  
          if (block.getMaterial() != Material.air)
          {
              block.setBlockBoundsBasedOnState(this.worldObj, this.field_145791_d, this.field_145792_e, this.field_145789_f);
              AxisAlignedBB axisalignedbb = block.getCollisionBoundingBoxFromPool(this.worldObj, this.field_145791_d, this.field_145792_e, this.field_145789_f);
  
              if (axisalignedbb != null && axisalignedbb.isVecInside(Vec3.createVectorHelper(this.posX, this.posY, this.posZ)))
              {
                  this.inGround = true;
              }
          }
  
          if (this.arrowShake > 0)
          {
              --this.arrowShake;
          }
  
          if (this.inGround)
          {
              int j = this.worldObj.getBlockMetadata(this.field_145791_d, this.field_145792_e, this.field_145789_f);
  
              if (block == this.field_145790_g && j == this.inData)
              {
                  ++this.ticksInGround;
  
                  if (this.ticksInGround == 1200)
                  {
                      this.setDead();
                  }
              }
              else
              {
                  this.inGround = false;
                  this.motionX *= (double)(this.rand.nextFloat() * 0.2F);
                  this.motionY *= (double)(this.rand.nextFloat() * 0.2F);
                  this.motionZ *= (double)(this.rand.nextFloat() * 0.2F);
                  this.ticksInGround = 0;
                  this.ticksInAir = 0;
              }
          }
          else
          {
              ++this.ticksInAir;
              Vec3 vec31 = Vec3.createVectorHelper(this.posX, this.posY, this.posZ);
              Vec3 vec3 = Vec3.createVectorHelper(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
              MovingObjectPosition movingobjectposition = this.worldObj.func_147447_a(vec31, vec3, false, true, false);
              vec31 = Vec3.createVectorHelper(this.posX, this.posY, this.posZ);
              vec3 = Vec3.createVectorHelper(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
  
              if (movingobjectposition != null)
              {
                  vec3 = Vec3.createVectorHelper(movingobjectposition.hitVec.xCoord, movingobjectposition.hitVec.yCoord, movingobjectposition.hitVec.zCoord);
              }
  
              Entity entity = null;
              List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D));
              double d0 = 0.0D;
              int i;
              float f1;
  
              for (i = 0; i < list.size(); ++i)
              {
                  Entity entity1 = (Entity)list.get(i);
  
                  if (entity1.canBeCollidedWith() && (entity1 != this.shootingEntity || this.ticksInAir >= 5))
                  {
                      f1 = 0.3F;
                      AxisAlignedBB axisalignedbb1 = entity1.boundingBox.expand((double)f1, (double)f1, (double)f1);
                      MovingObjectPosition movingobjectposition1 = axisalignedbb1.calculateIntercept(vec31, vec3);
  
                      if (movingobjectposition1 != null)
                      {
                          double d1 = vec31.distanceTo(movingobjectposition1.hitVec);
  
                          if (d1 < d0 || d0 == 0.0D)
                          {
                              entity = entity1;
                              d0 = d1;
                          }
                      }
                  }
              }
  
              if (entity != null)
              {
                  movingobjectposition = new MovingObjectPosition(entity);
              }
  
              if (movingobjectposition != null && movingobjectposition.entityHit != null && movingobjectposition.entityHit instanceof EntityPlayer)
              {
                  EntityPlayer entityplayer = (EntityPlayer)movingobjectposition.entityHit;
  
                  if (entityplayer.capabilities.disableDamage || this.shootingEntity instanceof EntityPlayer && !((EntityPlayer)this.shootingEntity).canAttackPlayer(entityplayer))
                  {
                      movingobjectposition = null;
                  }
              }
  
              float f2;
              float f4;
  
              if (movingobjectposition != null)
              {
                  if (movingobjectposition.entityHit != null)
                  {
                      f2 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
                      int k = MathHelper.ceiling_double_int((double)f2 * this.damage);
  
                      if (this.getIsCritical())
                      {
                          k += this.rand.nextInt(k / 2 + 2);
                      }
  
                      DamageSource damagesource = null;
  
                      if (this.shootingEntity == null)
                      {
                          damagesource = DamageSource.causeArrowDamage(this, this);
                      }
                      else
                      {
                          damagesource = DamageSource.causeArrowDamage(this, this.shootingEntity);
                      }
  
                      if (this.isBurning() && !(movingobjectposition.entityHit instanceof EntityEnderman))
                      {
                          movingobjectposition.entityHit.setFire(5);
                      }
  
                      if (movingobjectposition.entityHit.attackEntityFrom(damagesource, (float)k))
                      {
                          if (movingobjectposition.entityHit instanceof EntityLivingBase)
                          {
                              EntityLivingBase entitylivingbase = (EntityLivingBase)movingobjectposition.entityHit;
  
                              if (!this.worldObj.isRemote)
                              {
                                  entitylivingbase.setArrowCountInEntity(entitylivingbase.getArrowCountInEntity() + 1);
                              }
  
                              if (this.knockbackStrength > 0)
                              {
                                  f4 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
  
                                  if (f4 > 0.0F)
                                  {
                                      movingobjectposition.entityHit.addVelocity(this.motionX * (double)this.knockbackStrength * 0.6000000238418579D / (double)f4, 0.1D, this.motionZ * (double)this.knockbackStrength * 0.6000000238418579D / (double)f4);
                                  }
                              }
  
                              if (this.shootingEntity != null && this.shootingEntity instanceof EntityLivingBase)
                              {
                                  EnchantmentHelper.func_151384_a(entitylivingbase, this.shootingEntity);
                                  EnchantmentHelper.func_151385_b((EntityLivingBase)this.shootingEntity, entitylivingbase);
                              }
  
                              if (this.shootingEntity != null && movingobjectposition.entityHit != this.shootingEntity && movingobjectposition.entityHit instanceof EntityPlayer && this.shootingEntity instanceof EntityPlayerMP)
                              {
                                  ((EntityPlayerMP)this.shootingEntity).playerNetServerHandler.sendPacket(new S2BPacketChangeGameState(6, 0.0F));
                              }
                          }
  
                          this.playSound("random.bowhit", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
  
                          if (!(movingobjectposition.entityHit instanceof EntityEnderman))
                          {
                              this.setDead();
                          }
                      }
                      else
                      {
                          this.motionX *= -0.10000000149011612D;
                          this.motionY *= -0.10000000149011612D;
                          this.motionZ *= -0.10000000149011612D;
                          this.rotationYaw += 180.0F;
                          this.prevRotationYaw += 180.0F;
                          this.ticksInAir = 0;
                      }
                  }
                  else
                  {
                      this.field_145791_d = movingobjectposition.blockX;
                      this.field_145792_e = movingobjectposition.blockY;
                      this.field_145789_f = movingobjectposition.blockZ;
                      this.field_145790_g = this.worldObj.getBlock(this.field_145791_d, this.field_145792_e, this.field_145789_f);
                      this.inData = this.worldObj.getBlockMetadata(this.field_145791_d, this.field_145792_e, this.field_145789_f);
                      this.motionX = (double)((float)(movingobjectposition.hitVec.xCoord - this.posX));
                      this.motionY = (double)((float)(movingobjectposition.hitVec.yCoord - this.posY));
                      this.motionZ = (double)((float)(movingobjectposition.hitVec.zCoord - this.posZ));
                      f2 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
                      this.posX -= this.motionX / (double)f2 * 0.05000000074505806D;
                      this.posY -= this.motionY / (double)f2 * 0.05000000074505806D;
                      this.posZ -= this.motionZ / (double)f2 * 0.05000000074505806D;
                      this.playSound("random.bowhit", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
                      this.inGround = true;
                      this.arrowShake = 7;
                      this.setIsCritical(false);
  
                      if (this.field_145790_g.getMaterial() != Material.air)
                      {
                          this.field_145790_g.onEntityCollidedWithBlock(this.worldObj, this.field_145791_d, this.field_145792_e, this.field_145789_f, this);
                      }
                  }
              }
  
              if (this.getIsCritical())
              {
                  for (i = 0; i < 4; ++i)
                  {
                      this.worldObj.spawnParticle("crit", this.posX + this.motionX * (double)i / 4.0D, this.posY + this.motionY * (double)i / 4.0D, this.posZ + this.motionZ * (double)i / 4.0D, -this.motionX, -this.motionY + 0.2D, -this.motionZ);
                  }
              }
  
  