[1.7.2] Custom Arrow problems

[brandon3055]

I am trying to create a custom arrow for my custom bow but i have run into some problems.

At first the arrow was hitting the player when it was was fired. I was able to partially fix this problem buy removing super.onUpdate() from onUpdate() however the arrow still "visually" hits the player which looks terrible. I tried this fix  http://www.minecraftforge.net/forum/index.php/topic,16368.msg94429.html#msg94429

but was unsuccessful.

This is my custom arrow code as it is now.

 

import java.util.List;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.enchantment.Enchantment;
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.entity.projectile.EntityArrow;
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;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class EntityDraconicArrow extends EntityArrow 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;
   private static int SHOOTER_DATAWATCHER_INDEX = 22;
   /** The amount of knockback an arrow applies when it hits a mob. */
   private int knockbackStrength;

   public EntityDraconicArrow(ItemStack stack, World par1World, EntityLivingBase par2EntityLivingBase, float par3) {
      super(par1World);
      this.renderDistanceWeight = 10.0D;
      this.shootingEntity = par2EntityLivingBase;

      if (par2EntityLivingBase instanceof EntityPlayer) {
         if (!(EnchantmentHelper.getEnchantmentLevel(Enchantment.infinity.effectId, stack) > 0))
            this.canBePickedUp = 2;
      }

      this.setSize(0.5F, 0.5F);
      this.setLocationAndAngles(par2EntityLivingBase.posX, par2EntityLivingBase.posY + par2EntityLivingBase.getEyeHeight(), par2EntityLivingBase.posZ, par2EntityLivingBase.rotationYaw, par2EntityLivingBase.rotationPitch);
      this.posX -= MathHelper.cos(this.rotationYaw / 180.0F * (float) Math.PI) * 0.16F;
      this.posY -= 0.10000000149011612D;
      this.posZ -= 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 = -MathHelper.sin(this.rotationYaw / 180.0F * (float) Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float) Math.PI);
      this.motionZ = MathHelper.cos(this.rotationYaw / 180.0F * (float) Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float) Math.PI);
      this.motionY = (-MathHelper.sin(this.rotationPitch / 180.0F * (float) Math.PI));
      this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, par3 * 1.5F, 1.0F);
   }

   @Override
   protected void entityInit() {
      super.entityInit();    
      //this.dataWatcher.addObject(16, Byte.valueOf((byte) 0));
      this.dataWatcher.addObject(SHOOTER_DATAWATCHER_INDEX, "");
   }

   /**
    * Similar to setArrowHeading, it's point the throwable entity to a x, y, z
    * direction.
    */
   @Override
   public void setThrowableHeading(double par1, double par3, double par5, float par7, float par8) {
      float f2 = MathHelper.sqrt_double(par1 * par1 + par3 * par3 + par5 * par5);
      par1 /= f2;
      par3 /= f2;
      par5 /= f2;
      par1 += this.rand.nextGaussian() * (this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * par8;
      par3 += this.rand.nextGaussian() * (this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * par8;
      par5 += this.rand.nextGaussian() * (this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * par8;
      par1 *= par7;
      par3 *= par7;
      par5 *= par7;
      this.motionX = par1;
      this.motionY = par3;
      this.motionZ = par5;
      float f3 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
      this.prevRotationYaw = this.rotationYaw = (float) (Math.atan2(par1, par5) * 180.0D / Math.PI);
      this.prevRotationPitch = this.rotationPitch = (float) (Math.atan2(par3, 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
    */
   @Override
   @SideOnly(Side.CLIENT)
   public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9) {
      this.setPosition(par1, par3, par5);
      this.setRotation(par7, par8);
   }

   /**
    * Sets the velocity to the args. Args: x, y, z
    */
   @Override
   @SideOnly(Side.CLIENT)
   public void setVelocity(double par1, double par3, double par5) {
      this.motionX = par1;
      this.motionY = par3;
      this.motionZ = par5;

      if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F) {
         float f = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
         this.prevRotationYaw = this.rotationYaw = (float) (Math.atan2(par1, par5) * 180.0D / Math.PI);
         this.prevRotationPitch = this.rotationPitch = (float) (Math.atan2(par3, 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.
    */
   @SuppressWarnings("rawtypes")
   @Override
   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, 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(this.worldObj.getWorldVec3Pool().getVecFromPool(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 *= this.rand.nextFloat() * 0.2F;
            this.motionY *= this.rand.nextFloat() * 0.2F;
            this.motionZ *= this.rand.nextFloat() * 0.2F;
            this.ticksInGround = 0;
            this.ticksInAir = 0;
         }
      } else {
         ++this.ticksInAir;
         Vec3 vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
         Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(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 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
         vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);

         if (movingobjectposition != null) {
            vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(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.getShooter() || this.ticksInAir >= 5)) {
               f1 = 0.3F;
               AxisAlignedBB axisalignedbb1 = entity1.boundingBox.expand(f1, f1, 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.getShooter() instanceof EntityPlayer && !((EntityPlayer) this.getShooter()).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(f2 * this.damage);

               if (this.getIsCritical()) {
                  k += this.rand.nextInt(k / 2 + 2);
               }

               DamageSource damagesource = null;

               if (this.getShooter() == null) {
                  damagesource = DamageSource.causeArrowDamage(this, this);
               } else {
                  damagesource = DamageSource.causeArrowDamage(this, this.getShooter());
               }
               if (movingobjectposition.entityHit instanceof EntityEnderman)
                  damagesource = DamageSource.magic;//this.shootingEntity);

               if (this.isBurning() && !(movingobjectposition.entityHit instanceof EntityEnderman)) {
                  movingobjectposition.entityHit.setFire(5);
               }

               if (movingobjectposition.entityHit.attackEntityFrom(damagesource, 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 * this.knockbackStrength * 0.6000000238418579D / f4, 0.1D, this.motionZ * this.knockbackStrength * 0.6000000238418579D / f4);
                        }
                     }

                     if (this.getShooter() != null && this.getShooter() instanceof EntityLivingBase) {
                        EnchantmentHelper.func_151384_a(entitylivingbase, this.getShooter());
                        EnchantmentHelper.func_151385_b((EntityLivingBase) this.getShooter(), entitylivingbase);
                     }

                     if (this.getShooter() != null && movingobjectposition.entityHit != this.getShooter() && movingobjectposition.entityHit instanceof EntityPlayer && this.getShooter() instanceof EntityPlayerMP) {
                        ((EntityPlayerMP) this.getShooter()).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 = block;
               this.inData = this.worldObj.getBlockMetadata(this.field_145791_d, this.field_145792_e, this.field_145789_f);
               this.motionX = ((float) (movingobjectposition.hitVec.xCoord - this.posX));
               this.motionY = ((float) (movingobjectposition.hitVec.yCoord - this.posY));
               this.motionZ = ((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 / f2 * 0.05000000074505806D;
               this.posY -= this.motionY / f2 * 0.05000000074505806D;
               this.posZ -= this.motionZ / 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 * i / 4.0D, this.posY + this.motionY * i / 4.0D, this.posZ + this.motionZ * i / 4.0D, -this.motionX, -this.motionY + 0.2D, -this.motionZ);
            }
         }

         this.posX += this.motionX;
         this.posY += this.motionY;
         this.posZ += this.motionZ;
         f2 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
         this.rotationYaw = (float) (Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);

         for (this.rotationPitch = (float) (Math.atan2(this.motionY, f2) * 180.0D / Math.PI); this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F) {
            ;
         }

         while (this.rotationPitch - this.prevRotationPitch >= 180.0F) {
            this.prevRotationPitch += 360.0F;
         }

         while (this.rotationYaw - this.prevRotationYaw < -180.0F) {
            this.prevRotationYaw -= 360.0F;
         }

         while (this.rotationYaw - this.prevRotationYaw >= 180.0F) {
            this.prevRotationYaw += 360.0F;
         }

         this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F;
         this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F;
         float f3 = 0.99F;
         f1 = 0.05F;

         if (this.isInWater()) {
            for (int l = 0; l < 4; ++l) {
               f4 = 0.25F;
               this.worldObj.spawnParticle("bubble", this.posX - this.motionX * f4, this.posY - this.motionY * f4, this.posZ - this.motionZ * f4, this.motionX, this.motionY, this.motionZ);
            }

            f3 = 0.8F;
         }

         if (this.isWet()) {
            this.extinguish();
         }

         this.motionX *= f3;
         this.motionY *= f3;
         this.motionZ *= f3;
         this.motionY -= f1;
         this.setPosition(this.posX, this.posY, this.posZ);
         this.func_145775_I();
      }
   }

   /**
    * (abstract) Protected helper method to write subclass entity data to NBT.
    */
   @Override
   public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound) {
      par1NBTTagCompound.setShort("xTile", (short) this.field_145791_d);
      par1NBTTagCompound.setShort("yTile", (short) this.field_145792_e);
      par1NBTTagCompound.setShort("zTile", (short) this.field_145789_f);
      par1NBTTagCompound.setShort("life", (short) this.ticksInGround);
      par1NBTTagCompound.setByte("inTile", (byte) Block.getIdFromBlock(this.field_145790_g));
      par1NBTTagCompound.setByte("inData", (byte) this.inData);
      par1NBTTagCompound.setByte("shake", (byte) this.arrowShake);
      par1NBTTagCompound.setByte("inGround", (byte) (this.inGround ? 1 : 0));
      par1NBTTagCompound.setByte("pickup", (byte) this.canBePickedUp);
      par1NBTTagCompound.setDouble("damage", this.damage);
      par1NBTTagCompound.setString("shooter", getShooter() instanceof EntityPlayer ? ((EntityPlayer) getShooter()).getCommandSenderName() : "");
   }

   /**
    * (abstract) Protected helper method to read subclass entity data from NBT.
    */
   @Override
   public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound) {
      this.field_145791_d = par1NBTTagCompound.getShort("xTile");
      this.field_145792_e = par1NBTTagCompound.getShort("yTile");
      this.field_145789_f = par1NBTTagCompound.getShort("zTile");
      this.ticksInGround = par1NBTTagCompound.getShort("life");
      this.field_145790_g = Block.getBlockById(par1NBTTagCompound.getByte("inTile") & 255);
      this.inData = par1NBTTagCompound.getByte("inData") & 255;
      this.arrowShake = par1NBTTagCompound.getByte("shake") & 255;
      this.inGround = par1NBTTagCompound.getByte("inGround") == 1;
      dataWatcher.updateObject(SHOOTER_DATAWATCHER_INDEX, par1NBTTagCompound.hasKey("shooter") ? par1NBTTagCompound.getString("shooter") : "");

      if (par1NBTTagCompound.hasKey("damage", 99)) {
         this.damage = par1NBTTagCompound.getDouble("damage");
      }

      if (par1NBTTagCompound.hasKey("pickup", 99)) {
         this.canBePickedUp = par1NBTTagCompound.getByte("pickup");
      } else if (par1NBTTagCompound.hasKey("player", 99)) {
         this.canBePickedUp = par1NBTTagCompound.getBoolean("player") ? 1 : 0;
      }
   }

   /**
    * Called by a player entity when they collide with an entity
    */
   @Override
   public void onCollideWithPlayer(EntityPlayer par1EntityPlayer) {
      if (!this.worldObj.isRemote && this.inGround && this.arrowShake <= 0) {
         boolean flag = this.canBePickedUp == 1 || this.canBePickedUp == 2 && par1EntityPlayer.capabilities.isCreativeMode;

         if (this.canBePickedUp == 1 && !par1EntityPlayer.inventory.addItemStackToInventory(new ItemStack(Items.arrow, 1))) {
            flag = false;
         }

         if (flag) {
            this.playSound("random.pop", 0.2F, ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.0F) * 2.0F);
            par1EntityPlayer.onItemPickup(this, 1);
            this.setDead();
         }
      }
   }

   /**
    * returns if this entity triggers Block.onEntityWalking on the blocks they
    * walk on. used for spiders and wolves to
    * prevent them from trampling crops
    */
   @Override
   protected boolean canTriggerWalking() {
      return false;
   }

   @Override
   @SideOnly(Side.CLIENT)
   public float getShadowSize() {
      return 0.0F;
   }

   @Override
   public void setDamage(double par1) {
      this.damage = par1;
   }

   @Override
   public double getDamage() {
      return this.damage;
   }

   /**
    * Sets the amount of knockback the arrow applies when it hits a mob.
    */
   @Override
   public void setKnockbackStrength(int par1) {
      this.knockbackStrength = par1;
   }

   /**
    * If returns false, the item will not inflict any damage against entities.
    */
   @Override
   public boolean canAttackWithItem() {
      return false;
   }

   /**
    * Whether the arrow has a stream of critical hit particles flying behind
    * it.
    */
   @Override
   public void setIsCritical(boolean par1) {
      byte b0 = this.dataWatcher.getWatchableObjectByte(16);

      if (par1) {
         this.dataWatcher.updateObject(16, Byte.valueOf((byte) (b0 | 1)));
      } else {
         this.dataWatcher.updateObject(16, Byte.valueOf((byte) (b0 & -2)));
      }
   }

   /**
    * Whether the arrow has a stream of critical hit particles flying behind
    * it.
    */
   @Override
   public boolean getIsCritical() {
      byte b0 = this.dataWatcher.getWatchableObjectByte(16);
      return (b0 & 1) != 0;
   }

   /**
    * Returns the shooter of this arrow or null if none was available
    */
   public Entity getShooter() {
      String name = dataWatcher.getWatchableObjectString(SHOOTER_DATAWATCHER_INDEX);
      return (name.equals("") ? shootingEntity : worldObj.getPlayerEntityByName(name));
   }

   /**
    * Used to update the datawatcher shooting entity object
    */
   public EntityDraconicArrow setShooter(EntityPlayer player) {
      dataWatcher.updateObject(SHOOTER_DATAWATCHER_INDEX, player != null ? player.getCommandSenderName() : "");
      return this;
   }
}

 

If anyone can help me fix this problem it would be much appreciated

My custom bow is almost the same as the vanilla bow and works fine with the vanilla arrow entity but if you would like to see that code to i would be happy to post it.

[coolAlias]

If you remove "super.onUpdate()", you must replace it with "super.onEntityUpdate()" so you still get the benefit of the Entity#onEntityUpdate() code; luckily, this is possible because Entity#onUpdate() just calls #onEntityUpdate(), meaning you can bypass EntityArrow's onUpdate() method in this way while still calling a super method.

 

"shootingEntity", "canBePickedUp", and "arrowShake" are all public fields of EntityArrow - you do not need to add them again to your class, and doing so actually deprives you of the benefits of inheritance, since you now have to do all the work on those three fields yourself, rather than letting EntityArrow do it for you, not to mention giving them the exact same name is a potential cause of confusion (e.g. this.shootingEntity and super.shootingEntity are NOT the same!).

[brandon3055]

Thanks I lost count of how many times I went over that code but somehow I missed those every time. And thanks for the super.onEntityUpdate() fix it also seems that the custom datawatcher is not needed.

 

I just have one more annoying problem I need to figure out. I have modified the damage code to prevent enderman from teleporting away from the arrow.

DamageSource damagesource = null;

if (this.shootingEntity == null) {
    damagesource = DamageSource.causeArrowDamage(this, this);
} else {
    damagesource = DamageSource.causeArrowDamage(this, this.shootingEntity);
}
if (movingobjectposition.entityHit instanceof EntityEnderman)
    damagesource = DamageSource.magic;

And this works the arrow damages enderman end the enderman doesn't teleporting away but it dose "visually" teleporting for a second then snap back to its original position. I suspect for some reason the endermen is still teleporting client side then the client re syncs with the server. Any idea why this is happening?