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Bow damages player when shooting on survival


2FastAssassin

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when you shoot an arrow anywhere it just hits the player. its not a problem with the code , its got no errors but in game i get injured instead of shooting it

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when you shoot an arrow anywhere it just hits the player. its not a problem with the code , its got no errors but in game i get injured instead of shooting it

If you look at any of the vanilla projectile classes, they (almost?) all have a bit of code that looks something like:

if (this.ticksExisted > 5 || entityHit != this.getThrower()) {
// impact entity hit, deal damage, etc.

That gives the projectile 5 ticks before it is able to hit the entity that shot / threw it; without it, the projectile detects the player / shooter as intersecting its hit box right when it spawns and thus attacks the player instead of going anywhere.

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first bow class:

package wearethewarriorsmod.bow;

import wearethewarriorsmod.WeAreTheWarriorsMod;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.enchantment.Enchantment;
import net.minecraft.enchantment.EnchantmentHelper;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.projectile.EntityArrow;
import net.minecraft.init.Items;
import net.minecraft.item.EnumAction;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.IIcon;
import net.minecraft.world.World;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.entity.player.ArrowLooseEvent;
import net.minecraftforge.event.entity.player.ArrowNockEvent;

public class flamebow extends Item
{

    public static final String[] bowPullIconNameArray = new String[] {"pulling_0", "pulling_1", "pulling_2"};
    @SideOnly(Side.CLIENT)
    private IIcon[] iconArray;
    private static final String __OBFID = "CL_00001777";

    public flamebow()
    {
        this.maxStackSize = 1;
        this.setMaxDamage(2000);
        this.setFull3D();
    }
    public void onUpdate(ItemStack stack, World world, Entity entity, int par4, boolean par5){
        super.onUpdate(stack, world, entity, par4, par5);
        
              if(stack.isItemEnchanted() == false) {
                   stack.addEnchantment(Enchantment.flame, 5);
                   super.onUpdate(stack, world, entity, par4, par5);
           }
        

     }

    /**
     * called when the player releases the use item button. Args: itemstack, world, entityplayer, itemInUseCount
     */
    public void onPlayerStoppedUsing(ItemStack p_77615_1_, World p_77615_2_, EntityPlayer p_77615_3_, int p_77615_4_)
    {
        int j = this.getMaxItemUseDuration(p_77615_1_) - p_77615_4_;

        ArrowLooseEvent event = new ArrowLooseEvent(p_77615_3_, p_77615_1_, j);
        MinecraftForge.EVENT_BUS.post(event);
        if (event.isCanceled())
        {
            return;
        }
        j = event.charge;

        boolean flag = p_77615_3_.capabilities.isCreativeMode || EnchantmentHelper.getEnchantmentLevel(Enchantment.infinity.effectId, p_77615_1_) > 0;

        if (flag || p_77615_3_.inventory.hasItem(WeAreTheWarriorsMod.burntarrow))
        {
            float f = (float)j / 20.0F;
            f = (f * f + f * 2.0F) / 3.0F;

            if ((double)f < 0.1D)
            {
                return;
            }

            if (f > 1.0F)
            {
                f = 1.0F;
            }

            Entityburntarrow entityarrow = new Entityburntarrow(p_77615_2_, p_77615_3_, f * 2.0F);

            if (f == 1.0F)
            {
                entityarrow.setIsCritical(true);
            }

            int k = EnchantmentHelper.getEnchantmentLevel(Enchantment.power.effectId, p_77615_1_);

            if (k > 0)
            {
                entityarrow.setDamage(entityarrow.getDamage() + (double)k * 0.5D + 0.5D);
            }

            int l = EnchantmentHelper.getEnchantmentLevel(Enchantment.punch.effectId, p_77615_1_);

            if (l > 0)
            {
                entityarrow.setKnockbackStrength(l);
            }

            if (EnchantmentHelper.getEnchantmentLevel(Enchantment.flame.effectId, p_77615_1_) > 0)
            {
                entityarrow.setFire(100);
            }

            p_77615_1_.damageItem(1, p_77615_3_);
            p_77615_2_.playSoundAtEntity(p_77615_3_, "random.bow", 1.0F, 1.0F / (itemRand.nextFloat() * 0.4F + 1.2F) + f * 0.5F);

            if (flag)
            {
                entityarrow.canBePickedUp = 2;
            }
            else
            {
                p_77615_3_.inventory.consumeInventoryItem(WeAreTheWarriorsMod.burntarrow);
            }

            if (!p_77615_2_.isRemote)
            {
                p_77615_2_.spawnEntityInWorld(entityarrow);
            }
        }
    }

    public ItemStack onEaten(ItemStack p_77654_1_, World p_77654_2_, EntityPlayer p_77654_3_)
    {
        return p_77654_1_;
    }

    /**
     * How long it takes to use or consume an item
     */
    public int getMaxItemUseDuration(ItemStack p_77626_1_)
    {
        return 80000;
    }

    /**
     * returns the action that specifies what animation to play when the items is being used
     */
    public EnumAction getItemUseAction(ItemStack p_77661_1_)
    {
        return EnumAction.bow;
    }

    /**
     * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
     */
    public ItemStack onItemRightClick(ItemStack p_77659_1_, World p_77659_2_, EntityPlayer p_77659_3_)
    {
        ArrowNockEvent event = new ArrowNockEvent(p_77659_3_, p_77659_1_);
        MinecraftForge.EVENT_BUS.post(event);
        if (event.isCanceled())
        {
            return event.result;
        }

        if (p_77659_3_.capabilities.isCreativeMode || p_77659_3_.inventory.hasItem(WeAreTheWarriorsMod.burntarrow))
        {
            p_77659_3_.setItemInUse(p_77659_1_, this.getMaxItemUseDuration(p_77659_1_));
        }

        return p_77659_1_;
    }

    /**
     * Return the enchantability factor of the item, most of the time is based on material.
     */
    public int getItemEnchantability()
    {
        return 1;
    }

    @SideOnly(Side.CLIENT)
    public void registerIcons(IIconRegister p_94581_1_)
    {
        this.itemIcon = p_94581_1_.registerIcon("watwm:flame_bow_standby");
        this.iconArray = new IIcon[bowPullIconNameArray.length];

        for (int i = 0; i < this.iconArray.length; ++i)
        {
            this.iconArray[i] = p_94581_1_.registerIcon("watwm:flame_bow_" + bowPullIconNameArray[i]);
        }
    }

    @Override
    @SideOnly(Side.CLIENT)
    public IIcon getIcon(ItemStack stack, int renderPass, EntityPlayer player, ItemStack usingItem, int useRemaining){
    	if(usingItem == null) { return itemIcon; }
        int ticksInUse = stack.getMaxItemUseDuration() - useRemaining;
        if (ticksInUse > 17){
        	return iconArray[2];
        } else if (ticksInUse > 13){
        	return iconArray[1];
        } else if (ticksInUse > 0){
        	return iconArray[0];
        } else{
        	return itemIcon;
        }
    }
    
    /**
     * used to cycle through icons based on their used duration, i.e. for the bow
     */
    @SideOnly(Side.CLIENT)
    public IIcon getItemIconForUseDuration(int p_94599_1_)
    {
        return this.iconArray[p_94599_1_];
    }
}

second bow class(for the second bow):

package wearethewarriorsmod.bow;

import wearethewarriorsmod.WeAreTheWarriorsMod;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.enchantment.Enchantment;
import net.minecraft.enchantment.EnchantmentHelper;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.projectile.EntityArrow;
import net.minecraft.init.Items;
import net.minecraft.item.EnumAction;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.IIcon;
import net.minecraft.world.World;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.entity.player.ArrowLooseEvent;
import net.minecraftforge.event.entity.player.ArrowNockEvent;

public class corruptedbow extends Item
{

    public static final String[] bowPullIconNameArray = new String[] {"pulling_0", "pulling_1", "pulling_2"};
    @SideOnly(Side.CLIENT)
    private IIcon[] iconArray;
    private static final String __OBFID = "CL_00001777";

    public corruptedbow()
    {
        this.maxStackSize = 1;
        this.setMaxDamage(3000);
        this.setFull3D();
    }
    public void onUpdate(ItemStack stack, World world, Entity entity, int par4, boolean par5){
        super.onUpdate(stack, world, entity, par4, par5);
        
              if(stack.isItemEnchanted() == false) {
                   stack.addEnchantment(Enchantment.infinity, 1);
                   stack.addEnchantment(Enchantment.power, 5);
                   stack.addEnchantment(Enchantment.looting, 3);
                   super.onUpdate(stack, world, entity, par4, par5);
           }
        

     }

    /**
     * called when the player releases the use item button. Args: itemstack, world, entityplayer, itemInUseCount
     */
    public void onPlayerStoppedUsing(ItemStack p_77615_1_, World p_77615_2_, EntityPlayer p_77615_3_, int p_77615_4_)
    {
        int j = this.getMaxItemUseDuration(p_77615_1_) - p_77615_4_;

        ArrowLooseEvent event = new ArrowLooseEvent(p_77615_3_, p_77615_1_, j);
        MinecraftForge.EVENT_BUS.post(event);
        if (event.isCanceled())
        {
            return;
        }
        j = event.charge;

        boolean flag = p_77615_3_.capabilities.isCreativeMode || EnchantmentHelper.getEnchantmentLevel(Enchantment.infinity.effectId, p_77615_1_) > 0;

        if (flag || p_77615_3_.inventory.hasItem(WeAreTheWarriorsMod.corruptedarrow))
        {
            float f = (float)j / 20.0F;
            f = (f * f + f * 2.0F) / 3.0F;

            if ((double)f < 0.1D)
            {
                return;
            }

            if (f > 1.0F)
            {
                f = 1.0F;
            }

            Entitycorruptedarrow entityarrow = new Entitycorruptedarrow(p_77615_2_, p_77615_3_, f * 2.0F);

            if (f == 1.0F)
            {
                entityarrow.setIsCritical(true);
            }

            int k = EnchantmentHelper.getEnchantmentLevel(Enchantment.power.effectId, p_77615_1_);

            if (k > 0)
            {
                entityarrow.setDamage(entityarrow.getDamage() + (double)k * 0.5D + 0.5D);
            }

            int l = EnchantmentHelper.getEnchantmentLevel(Enchantment.punch.effectId, p_77615_1_);

            if (l > 0)
            {
                entityarrow.setKnockbackStrength(l);
            }

            if (EnchantmentHelper.getEnchantmentLevel(Enchantment.flame.effectId, p_77615_1_) > 0)
            {
                entityarrow.setFire(100);
            }

            p_77615_1_.damageItem(1, p_77615_3_);
            p_77615_2_.playSoundAtEntity(p_77615_3_, "random.bow", 1.0F, 1.0F / (itemRand.nextFloat() * 0.4F + 1.2F) + f * 0.5F);

            if (flag)
            {
                entityarrow.canBePickedUp = 2;
            }
            else
            {
                p_77615_3_.inventory.consumeInventoryItem(WeAreTheWarriorsMod.corruptedarrow);
            }

            if (!p_77615_2_.isRemote)
            {
                p_77615_2_.spawnEntityInWorld(entityarrow);
            }
        }
    }

    public ItemStack onEaten(ItemStack p_77654_1_, World p_77654_2_, EntityPlayer p_77654_3_)
    {
        return p_77654_1_;
    }

    /**
     * How long it takes to use or consume an item
     */
    public int getMaxItemUseDuration(ItemStack p_77626_1_)
    {
        return 95000;
    }

    /**
     * returns the action that specifies what animation to play when the items is being used
     */
    public EnumAction getItemUseAction(ItemStack p_77661_1_)
    {
        return EnumAction.bow;
    }

    /**
     * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
     */
    public ItemStack onItemRightClick(ItemStack p_77659_1_, World p_77659_2_, EntityPlayer p_77659_3_)
    {
        ArrowNockEvent event = new ArrowNockEvent(p_77659_3_, p_77659_1_);
        MinecraftForge.EVENT_BUS.post(event);
        if (event.isCanceled())
        {
            return event.result;
        }

        if (p_77659_3_.capabilities.isCreativeMode || p_77659_3_.inventory.hasItem(WeAreTheWarriorsMod.corruptedarrow))
        {
            p_77659_3_.setItemInUse(p_77659_1_, this.getMaxItemUseDuration(p_77659_1_));
        }

        return p_77659_1_;
    }

    /**
     * Return the enchantability factor of the item, most of the time is based on material.
     */
    public int getItemEnchantability()
    {
        return 1;
    }

    @SideOnly(Side.CLIENT)
    public void registerIcons(IIconRegister p_94581_1_)
    {
        this.itemIcon = p_94581_1_.registerIcon("watwm:corrupted_bow_standby");
        this.iconArray = new IIcon[bowPullIconNameArray.length];

        for (int i = 0; i < this.iconArray.length; ++i)
        {
            this.iconArray[i] = p_94581_1_.registerIcon("watwm:corrupted_bow_" + bowPullIconNameArray[i]);
        }
    }

    @Override
    @SideOnly(Side.CLIENT)
    public IIcon getIcon(ItemStack stack, int renderPass, EntityPlayer player, ItemStack usingItem, int useRemaining){
    	if(usingItem == null) { return itemIcon; }
        int ticksInUse = stack.getMaxItemUseDuration() - useRemaining;
        if (ticksInUse > 17){
        	return iconArray[2];
        } else if (ticksInUse > 13){
        	return iconArray[1];
        } else if (ticksInUse > 0){
        	return iconArray[0];
        } else{
        	return itemIcon;
        }
    }
    
    /**
     * used to cycle through icons based on their used duration, i.e. for the bow
     */
    @SideOnly(Side.CLIENT)
    public IIcon getItemIconForUseDuration(int p_94599_1_)
    {
        return this.iconArray[p_94599_1_];
    }

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Your bow class is useless, we need your arrow class.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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first one:

package wearethewarriorsmod.bow;

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.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;

public class Entityburntarrow 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;
    /** The amount of knockback an arrow applies when it hits a mob. */
    private int knockbackStrength;
    private static final String __OBFID = "CL_00001715";

    public Entityburntarrow(World p_i1753_1_)
    {
        super(p_i1753_1_);
        this.renderDistanceWeight = 10.0D;
        this.setSize(0.5F, 0.5F);
    }

    public Entityburntarrow(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 Entityburntarrow(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 Entityburntarrow(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 == 75)
                {
                    this.setDead();
                    this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, 6.5F, true);
                }
            }
            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.causeThrownDamage(this, this);
                    }
                    else
                    {
                        damagesource = DamageSource.causeThrownDamage(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);
                }
            }

            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, (double)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 * (double)f4, this.posY - this.motionY * (double)f4, this.posZ - this.motionZ * (double)f4, this.motionX, this.motionY, this.motionZ);
                }

                f3 = 0.8F;
            }

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

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

    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    public void writeEntityToNBT(NBTTagCompound p_70014_1_)
    {
        p_70014_1_.setShort("xTile", (short)this.field_145791_d);
        p_70014_1_.setShort("yTile", (short)this.field_145792_e);
        p_70014_1_.setShort("zTile", (short)this.field_145789_f);
        p_70014_1_.setShort("life", (short)this.ticksInGround);
        p_70014_1_.setByte("inTile", (byte)Block.getIdFromBlock(this.field_145790_g));
        p_70014_1_.setByte("inData", (byte)this.inData);
        p_70014_1_.setByte("shake", (byte)this.arrowShake);
        p_70014_1_.setByte("inGround", (byte)(this.inGround ? 1 : 0));
        p_70014_1_.setByte("pickup", (byte)this.canBePickedUp);
        p_70014_1_.setDouble("damage", this.damage);
    }

    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    public void readEntityFromNBT(NBTTagCompound p_70037_1_)
    {
        this.field_145791_d = p_70037_1_.getShort("xTile");
        this.field_145792_e = p_70037_1_.getShort("yTile");
        this.field_145789_f = p_70037_1_.getShort("zTile");
        this.ticksInGround = p_70037_1_.getShort("life");
        this.field_145790_g = Block.getBlockById(p_70037_1_.getByte("inTile") & 255);
        this.inData = p_70037_1_.getByte("inData") & 255;
        this.arrowShake = p_70037_1_.getByte("shake") & 255;
        this.inGround = p_70037_1_.getByte("inGround") == 1;

        if (p_70037_1_.hasKey("damage", 99))
        {
            this.damage = p_70037_1_.getDouble("damage");
        }

        if (p_70037_1_.hasKey("pickup", 99))
        {
            this.canBePickedUp = p_70037_1_.getByte("pickup");
        }
        else if (p_70037_1_.hasKey("player", 99))
        {
            this.canBePickedUp = p_70037_1_.getBoolean("player") ? 1 : 0;
        }
    }

    /**
     * Called by a player entity when they collide with an entity
     */
    public void onCollideWithPlayer(EntityPlayer p_70100_1_)
    {
        if (!this.worldObj.isRemote && this.inGround && this.arrowShake <= 0)
        {
            boolean flag = this.canBePickedUp == 1 || this.canBePickedUp == 2 && p_70100_1_.capabilities.isCreativeMode;

            if (this.canBePickedUp == 1 && !p_70100_1_.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);
                p_70100_1_.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
     */
    protected boolean canTriggerWalking()
    {
        return false;
    }

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

    public void setDamage(double p_70239_1_)
    {
        this.damage = p_70239_1_;
    }

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

    /**
     * Sets the amount of knockback the arrow applies when it hits a mob.
     */
    public void setKnockbackStrength(int p_70240_1_)
    {
        this.knockbackStrength = p_70240_1_;
    }

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

    /**
     * Whether the arrow has a stream of critical hit particles flying behind it.
     */
    public void setIsCritical(boolean p_70243_1_)
    {
        byte b0 = this.dataWatcher.getWatchableObjectByte(16);

        if (p_70243_1_)
        {
            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.
     */
    public boolean getIsCritical()
    {
        byte b0 = this.dataWatcher.getWatchableObjectByte(16);
        return (b0 & 1) != 0;
    }
}

second arrow:

package wearethewarriorsmod.bow;

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.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;

public class Entityburntarrow 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;
    /** The amount of knockback an arrow applies when it hits a mob. */
    private int knockbackStrength;
    private static final String __OBFID = "CL_00001715";

    public Entityburntarrow(World p_i1753_1_)
    {
        super(p_i1753_1_);
        this.renderDistanceWeight = 10.0D;
        this.setSize(0.5F, 0.5F);
    }

    public Entityburntarrow(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 Entityburntarrow(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 Entityburntarrow(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 == 75)
                {
                    this.setDead();
                    this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, 6.5F, true);
                }
            }
            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.causeThrownDamage(this, this);
                    }
                    else
                    {
                        damagesource = DamageSource.causeThrownDamage(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);
                }
            }

            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, (double)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 * (double)f4, this.posY - this.motionY * (double)f4, this.posZ - this.motionZ * (double)f4, this.motionX, this.motionY, this.motionZ);
                }

                f3 = 0.8F;
            }

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

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

    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    public void writeEntityToNBT(NBTTagCompound p_70014_1_)
    {
        p_70014_1_.setShort("xTile", (short)this.field_145791_d);
        p_70014_1_.setShort("yTile", (short)this.field_145792_e);
        p_70014_1_.setShort("zTile", (short)this.field_145789_f);
        p_70014_1_.setShort("life", (short)this.ticksInGround);
        p_70014_1_.setByte("inTile", (byte)Block.getIdFromBlock(this.field_145790_g));
        p_70014_1_.setByte("inData", (byte)this.inData);
        p_70014_1_.setByte("shake", (byte)this.arrowShake);
        p_70014_1_.setByte("inGround", (byte)(this.inGround ? 1 : 0));
        p_70014_1_.setByte("pickup", (byte)this.canBePickedUp);
        p_70014_1_.setDouble("damage", this.damage);
    }

    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    public void readEntityFromNBT(NBTTagCompound p_70037_1_)
    {
        this.field_145791_d = p_70037_1_.getShort("xTile");
        this.field_145792_e = p_70037_1_.getShort("yTile");
        this.field_145789_f = p_70037_1_.getShort("zTile");
        this.ticksInGround = p_70037_1_.getShort("life");
        this.field_145790_g = Block.getBlockById(p_70037_1_.getByte("inTile") & 255);
        this.inData = p_70037_1_.getByte("inData") & 255;
        this.arrowShake = p_70037_1_.getByte("shake") & 255;
        this.inGround = p_70037_1_.getByte("inGround") == 1;

        if (p_70037_1_.hasKey("damage", 99))
        {
            this.damage = p_70037_1_.getDouble("damage");
        }

        if (p_70037_1_.hasKey("pickup", 99))
        {
            this.canBePickedUp = p_70037_1_.getByte("pickup");
        }
        else if (p_70037_1_.hasKey("player", 99))
        {
            this.canBePickedUp = p_70037_1_.getBoolean("player") ? 1 : 0;
        }
    }

    /**
     * Called by a player entity when they collide with an entity
     */
    public void onCollideWithPlayer(EntityPlayer p_70100_1_)
    {
        if (!this.worldObj.isRemote && this.inGround && this.arrowShake <= 0)
        {
            boolean flag = this.canBePickedUp == 1 || this.canBePickedUp == 2 && p_70100_1_.capabilities.isCreativeMode;

            if (this.canBePickedUp == 1 && !p_70100_1_.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);
                p_70100_1_.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
     */
    protected boolean canTriggerWalking()
    {
        return false;
    }

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

    public void setDamage(double p_70239_1_)
    {
        this.damage = p_70239_1_;
    }

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

    /**
     * Sets the amount of knockback the arrow applies when it hits a mob.
     */
    public void setKnockbackStrength(int p_70240_1_)
    {
        this.knockbackStrength = p_70240_1_;
    }

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

    /**
     * Whether the arrow has a stream of critical hit particles flying behind it.
     */
    public void setIsCritical(boolean p_70243_1_)
    {
        byte b0 = this.dataWatcher.getWatchableObjectByte(16);

        if (p_70243_1_)
        {
            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.
     */
    public boolean getIsCritical()
    {
        byte b0 = this.dataWatcher.getWatchableObjectByte(16);
        return (b0 & 1) != 0;
    }
}

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Never heard of pastebin or at least code and spoiler tags? That wall of text is atrocious to read.

 

Why do you copy the entire EntityArrow class into your class that extends EntityArrow? Do you not realize how object inheritance works? That's almost guaranteed to be the reason your code is not working as you expect.

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And for god's sakes, rename your variables.  alt-shift-r will refactor anything you select, so you can rename all those SRG variables to something meaningful quickly and easily.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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i just wanted different arrows for different bows

Like an arrow with a different texture? Then all you need is to create your class 'public class EntityCustomArrow extends EntityArrow' and register a custom render class for it, and spawn your custom arrow entity from your custom bow.

 

You shouldn't need to copy any of the EntityArrow code into your custom class - just let the super class take care of everything except for colliding with the player (otherwise you will get regular arrows back).

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