    001package net.minecraft.entity.projectile;
    002
    003import cpw.mods.fml.relauncher.Side;
    004import cpw.mods.fml.relauncher.SideOnly;
    005import java.util.List;
    006import net.minecraft.block.Block;
    007import net.minecraft.enchantment.EnchantmentThorns;
    008import net.minecraft.entity.Entity;
    009import net.minecraft.entity.EntityLiving;
    010import net.minecraft.entity.IProjectile;
    011import net.minecraft.entity.monster.EntityEnderman;
    012import net.minecraft.entity.player.EntityPlayer;
    013import net.minecraft.entity.player.EntityPlayerMP;
    014import net.minecraft.item.Item;
    015import net.minecraft.item.ItemStack;
    016import net.minecraft.nbt.NBTTagCompound;
    017import net.minecraft.network.packet.Packet70GameEvent;
    018import net.minecraft.util.AxisAlignedBB;
    019import net.minecraft.util.DamageSource;
    020import net.minecraft.util.MathHelper;
    021import net.minecraft.util.MovingObjectPosition;
    022import net.minecraft.util.Vec3;
    023import net.minecraft.world.World;
    024
    025public class EntityArrow extends Entity implements IProjectile
    026{
    027    private int xTile = -1;
    028    private int yTile = -1;
    029    private int zTile = -1;
    030    private int inTile = 0;
    031    private int inData = 0;
    032    private boolean inGround = false;
    033
    034    /** 1 if the player can pick up the arrow */
    035    public int canBePickedUp = 0;
    036
    037    /** Seems to be some sort of timer for animating an arrow. */
    038    public int arrowShake = 0;
    039
    040    /** The owner of this arrow. */
    041    public Entity shootingEntity;
    042    private int ticksInGround;
    043    private int ticksInAir = 0;
    044    private double damage = 2.0D;
    045
    046    /** The amount of knockback an arrow applies when it hits a mob. */
    047    private int knockbackStrength;
    048
    049    public EntityArrow(World par1World)
    050    {
    051        super(par1World);
    052        this.renderDistanceWeight = 10.0D;
    053        this.setSize(0.5F, 0.5F);
    054    }
    055
    056    public EntityArrow(World par1World, double par2, double par4, double par6)
    057    {
    058        super(par1World);
    059        this.renderDistanceWeight = 10.0D;
    060        this.setSize(0.5F, 0.5F);
    061        this.setPosition(par2, par4, par6);
    062        this.yOffset = 0.0F;
    063    }
    064
    065    public EntityArrow(World par1World, EntityLiving par2EntityLiving, EntityLiving par3EntityLiving, float par4, float par5)
    066    {
    067        super(par1World);
    068        this.renderDistanceWeight = 10.0D;
    069        this.shootingEntity = par2EntityLiving;
    070
    071        if (par2EntityLiving instanceof EntityPlayer)
    072        {
    073            this.canBePickedUp = 1;
    074        }
    075
    076        this.posY = par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight() - 0.10000000149011612D;
    077        double d0 = par3EntityLiving.posX - par2EntityLiving.posX;
    078        double d1 = par3EntityLiving.boundingBox.minY + (double)(par3EntityLiving.height / 3.0F) - this.posY;
    079        double d2 = par3EntityLiving.posZ - par2EntityLiving.posZ;
    080        double d3 = (double)MathHelper.sqrt_double(d0 * d0 + d2 * d2);
    081
    082        if (d3 >= 1.0E-7D)
    083        {
    084            float f2 = (float)(Math.atan2(d2, d0) * 180.0D / Math.PI) - 90.0F;
    085            float f3 = (float)(-(Math.atan2(d1, d3) * 180.0D / Math.PI));
    086            double d4 = d0 / d3;
    087            double d5 = d2 / d3;
    088            this.setLocationAndAngles(par2EntityLiving.posX + d4, this.posY, par2EntityLiving.posZ + d5, f2, f3);
    089            this.yOffset = 0.0F;
    090            float f4 = (float)d3 * 0.2F;
    091            this.setThrowableHeading(d0, d1 + (double)f4, d2, par4, par5);
    092        }
    093    }
    094
    095    public EntityArrow(World par1World, EntityLiving par2EntityLiving, float par3)
    096    {
    097        super(par1World);
    098        this.renderDistanceWeight = 10.0D;
    099        this.shootingEntity = par2EntityLiving;
    100
    101        if (par2EntityLiving instanceof EntityPlayer)
    102        {
    103            this.canBePickedUp = 1;
    104        }
    105
    106        this.setSize(0.5F, 0.5F);
    107        this.setLocationAndAngles(par2EntityLiving.posX, par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight(), par2EntityLiving.posZ, par2EntityLiving.rotationYaw, par2EntityLiving.rotationPitch);
    108        this.posX -= (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
    109        this.posY -= 0.10000000149011612D;
    110        this.posZ -= (double)(MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
    111        this.setPosition(this.posX, this.posY, this.posZ);
    112        this.yOffset = 0.0F;
    113        this.motionX = (double)(-MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI));
    114        this.motionZ = (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI));
    115        this.motionY = (double)(-MathHelper.sin(this.rotationPitch / 180.0F * (float)Math.PI));
    116        this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, par3 * 1.5F, 1.0F);
    117    }
    118
    119    protected void entityInit()
    120    {
    121        this.dataWatcher.addObject(16, Byte.valueOf((byte)0));
    122    }
    123
    124    /**
    125     * Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction.
    126     */
    127    public void setThrowableHeading(double par1, double par3, double par5, float par7, float par8)
    128    {
    129        float f2 = MathHelper.sqrt_double(par1 * par1 + par3 * par3 + par5 * par5);
    130        par1 /= (double)f2;
    131        par3 /= (double)f2;
    132        par5 /= (double)f2;
    133        par1 += this.rand.nextGaussian() * (double)(this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * (double)par8;
    134        par3 += this.rand.nextGaussian() * (double)(this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * (double)par8;
    135        par5 += this.rand.nextGaussian() * (double)(this.rand.nextBoolean() ? -1 : 1) * 0.007499999832361937D * (double)par8;
    136        par1 *= (double)par7;
    137        par3 *= (double)par7;
    138        par5 *= (double)par7;
    139        this.motionX = par1;
    140        this.motionY = par3;
    141        this.motionZ = par5;
    142        float f3 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
    143        this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
    144        this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)f3) * 180.0D / Math.PI);
    145        this.ticksInGround = 0;
    146    }
    147
    148    @SideOnly(Side.CLIENT)
    149
    150    /**
    151     * Sets the position and rotation. Only difference from the other one is no bounding on the rotation. Args: posX,
    152     * posY, posZ, yaw, pitch
    153     */
    154    public void setPositionAndRotation2(double par1, double par3, double par5, float par7, float par8, int par9)
    155    {
    156        this.setPosition(par1, par3, par5);
    157        this.setRotation(par7, par8);
    158    }
    159
    160    @SideOnly(Side.CLIENT)
    161
    162    /**
    163     * Sets the velocity to the args. Args: x, y, z
    164     */
    165    public void setVelocity(double par1, double par3, double par5)
    166    {
    167        this.motionX = par1;
    168        this.motionY = par3;
    169        this.motionZ = par5;
    170
    171        if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
    172        {
    173            float f = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
    174            this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
    175            this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)f) * 180.0D / Math.PI);
    176            this.prevRotationPitch = this.rotationPitch;
    177            this.prevRotationYaw = this.rotationYaw;
    178            this.setLocationAndAngles(this.posX, this.posY, this.posZ, this.rotationYaw, this.rotationPitch);
    179            this.ticksInGround = 0;
    180        }
    181    }
    182
    183    /**
    184     * Called to update the entity's position/logic.
    185     */
    186    public void onUpdate()
    187    {
    188        super.onUpdate();
    189
    190        if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
    191        {
    192            float f = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
    193            this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);
    194            this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(this.motionY, (double)f) * 180.0D / Math.PI);
    195        }
    196
    197        int i = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
    198
    199        if (i > 0)
    200        {
    201            Block.blocksList[i].setBlockBoundsBasedOnState(this.worldObj, this.xTile, this.yTile, this.zTile);
    202            AxisAlignedBB axisalignedbb = Block.blocksList[i].getCollisionBoundingBoxFromPool(this.worldObj, this.xTile, this.yTile, this.zTile);
    203
    204            if (axisalignedbb != null && axisalignedbb.isVecInside(this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ)))
    205            {
    206                this.inGround = true;
    207            }
    208        }
    209
    210        if (this.arrowShake > 0)
    211        {
    212            --this.arrowShake;
    213        }
    214
    215        if (this.inGround)
    216        {
    217            int j = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
    218            int k = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile);
    219
    220            if (j == this.inTile && k == this.inData)
    221            {
    222                ++this.ticksInGround;
    223
    224                if (this.ticksInGround == 1200)
    225                {
    226                    this.setDead();
    227                }
    228            }
    229            else
    230            {
    231                this.inGround = false;
    232                this.motionX *= (double)(this.rand.nextFloat() * 0.2F);
    233                this.motionY *= (double)(this.rand.nextFloat() * 0.2F);
    234                this.motionZ *= (double)(this.rand.nextFloat() * 0.2F);
    235                this.ticksInGround = 0;
    236                this.ticksInAir = 0;
    237            }
    238        }
    239        else
    240        {
    241            ++this.ticksInAir;
    242            Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
    243            Vec3 vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
    244            MovingObjectPosition movingobjectposition = this.worldObj.rayTraceBlocks_do_do(vec3, vec31, false, true);
    245            vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
    246            vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
    247
    248            if (movingobjectposition != null)
    249            {
    250                vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(movingobjectposition.hitVec.xCoord, movingobjectposition.hitVec.yCoord, movingobjectposition.hitVec.zCoord);
    251            }
    252
    253            Entity entity = null;
    254            List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D));
    255            double d0 = 0.0D;
    256            int l;
    257            float f1;
    258
    259            for (l = 0; l < list.size(); ++l)
    260            {
    261                Entity entity1 = (Entity)list.get(l);
    262
    263                if (entity1.canBeCollidedWith() && (entity1 != this.shootingEntity || this.ticksInAir >= 5))
    264                {
    265                    f1 = 0.3F;
    266                    AxisAlignedBB axisalignedbb1 = entity1.boundingBox.expand((double)f1, (double)f1, (double)f1);
    267                    MovingObjectPosition movingobjectposition1 = axisalignedbb1.calculateIntercept(vec3, vec31);
    268
    269                    if (movingobjectposition1 != null)
    270                    {
    271                        double d1 = vec3.distanceTo(movingobjectposition1.hitVec);
    272
    273                        if (d1 < d0 || d0 == 0.0D)
    274                        {
    275                            entity = entity1;
    276                            d0 = d1;
    277                        }
    278                    }
    279                }
    280            }
    281
    282            if (entity != null)
    283            {
    284                movingobjectposition = new MovingObjectPosition(entity);
    285            }
    286
    287            if (movingobjectposition != null && movingobjectposition.entityHit != null && movingobjectposition.entityHit instanceof EntityPlayer)
    288            {
    289                EntityPlayer entityplayer = (EntityPlayer)movingobjectposition.entityHit;
    290
    291                if (entityplayer.capabilities.disableDamage || this.shootingEntity instanceof EntityPlayer && !((EntityPlayer)this.shootingEntity).func_96122_a(entityplayer))
    292                {
    293                    movingobjectposition = null;
    294                }
    295            }
    296
    297            float f2;
    298            float f3;
    299
    300            if (movingobjectposition != null)
    301            {
    302                if (movingobjectposition.entityHit != null)
    303                {
    304                    f2 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
    305                    int i1 = MathHelper.ceiling_double_int((double)f2 * this.damage);
    306
    307                    if (this.getIsCritical())
    308                    {
    309                        i1 += this.rand.nextInt(i1 / 2 + 2);
    310                    }
    311
    312                    DamageSource damagesource = null;
    313
    314                    if (this.shootingEntity == null)
    315                    {
    316                        damagesource = DamageSource.causeArrowDamage(this, this);
    317                    }
    318                    else
    319                    {
    320                        damagesource = DamageSource.causeArrowDamage(this, this.shootingEntity);
    321                    }
    322
    323                    if (this.isBurning() && !(movingobjectposition.entityHit instanceof EntityEnderman))
    324                    {
    325                        movingobjectposition.entityHit.setFire(5);
    326                    }
    327
    328                    if (movingobjectposition.entityHit.attackEntityFrom(damagesource, i1))
    329                    {
    330                        if (movingobjectposition.entityHit instanceof EntityLiving)
    331                        {
    332                            EntityLiving entityliving = (EntityLiving)movingobjectposition.entityHit;
    333
    334                            if (!this.worldObj.isRemote)
    335                            {
    336                                entityliving.setArrowCountInEntity(entityliving.getArrowCountInEntity() + 1);
    337                            }
    338
    339                            if (this.knockbackStrength > 0)
    340                            {
    341                                f3 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
    342
    343                                if (f3 > 0.0F)
    344                                {
    345                                    movingobjectposition.entityHit.addVelocity(this.motionX * (double)this.knockbackStrength * 0.6000000238418579D / (double)f3, 0.1D, this.motionZ * (double)this.knockbackStrength * 0.6000000238418579D / (double)f3);
    346                                }
    347                            }
    348
    349                            if (this.shootingEntity != null)
    350                            {
    351                                EnchantmentThorns.func_92096_a(this.shootingEntity, entityliving, this.rand);
    352                            }
    353
    354                            if (this.shootingEntity != null && movingobjectposition.entityHit != this.shootingEntity && movingobjectposition.entityHit instanceof EntityPlayer && this.shootingEntity instanceof EntityPlayerMP)
    355                            {
    356                                ((EntityPlayerMP)this.shootingEntity).playerNetServerHandler.sendPacketToPlayer(new Packet70GameEvent(6, 0));
    357                            }
    358                        }
    359
    360                        this.playSound("random.bowhit", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
    361
    362                        if (!(movingobjectposition.entityHit instanceof EntityEnderman))
    363                        {
    364                            this.setDead();
    365                        }
    366                    }
    367                    else
    368                    {
    369                        this.motionX *= -0.10000000149011612D;
    370                        this.motionY *= -0.10000000149011612D;
    371                        this.motionZ *= -0.10000000149011612D;
    372                        this.rotationYaw += 180.0F;
    373                        this.prevRotationYaw += 180.0F;
    374                        this.ticksInAir = 0;
    375                    }
    376                }
    377                else
    378                {
    379                    this.xTile = movingobjectposition.blockX;
    380                    this.yTile = movingobjectposition.blockY;
    381                    this.zTile = movingobjectposition.blockZ;
    382                    this.inTile = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
    383                    this.inData = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile);
    384                    this.motionX = (double)((float)(movingobjectposition.hitVec.xCoord - this.posX));
    385                    this.motionY = (double)((float)(movingobjectposition.hitVec.yCoord - this.posY));
    386                    this.motionZ = (double)((float)(movingobjectposition.hitVec.zCoord - this.posZ));
    387                    f2 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
    388                    this.posX -= this.motionX / (double)f2 * 0.05000000074505806D;
    389                    this.posY -= this.motionY / (double)f2 * 0.05000000074505806D;
    390                    this.posZ -= this.motionZ / (double)f2 * 0.05000000074505806D;
    391                    this.playSound("random.bowhit", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
    392                    this.inGround = true;
    393                    this.arrowShake = 7;
    394                    this.setIsCritical(false);
    395
    396                    if (this.inTile != 0)
    397                    {
    398                        Block.blocksList[this.inTile].onEntityCollidedWithBlock(this.worldObj, this.xTile, this.yTile, this.zTile, this);
    399                    }
    400                }
    401            }
    402
    403            if (this.getIsCritical())
    404            {
    405                for (l = 0; l < 4; ++l)
    406                {
    407                    this.worldObj.spawnParticle("crit", this.posX + this.motionX * (double)l / 4.0D, this.posY + this.motionY * (double)l / 4.0D, this.posZ + this.motionZ * (double)l / 4.0D, -this.motionX, -this.motionY + 0.2D, -this.motionZ);
    408                }
    409            }
    410
    411            this.posX += this.motionX;
    412            this.posY += this.motionY;
    413            this.posZ += this.motionZ;
    414            f2 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
    415            this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);
    416
    417            for (this.rotationPitch = (float)(Math.atan2(this.motionY, (double)f2) * 180.0D / Math.PI); this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F)
    418            {
    419                ;
    420            }
    421
    422            while (this.rotationPitch - this.prevRotationPitch >= 180.0F)
    423            {
    424                this.prevRotationPitch += 360.0F;
    425            }
    426
    427            while (this.rotationYaw - this.prevRotationYaw < -180.0F)
    428            {
    429                this.prevRotationYaw -= 360.0F;
    430            }
    431
    432            while (this.rotationYaw - this.prevRotationYaw >= 180.0F)
    433            {
    434                this.prevRotationYaw += 360.0F;
    435            }
    436
    437            this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F;
    438            this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F;
    439            float f4 = 0.99F;
    440            f1 = 0.05F;
    441
    442            if (this.isInWater())
    443            {
    444                for (int j1 = 0; j1 < 4; ++j1)
    445                {
    446                    f3 = 0.25F;
    447                    this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double)f3, this.posY - this.motionY * (double)f3, this.posZ - this.motionZ * (double)f3, this.motionX, this.motionY, this.motionZ);
    448                }
    449
    450                f4 = 0.8F;
    451            }
    452
    453            this.motionX *= (double)f4;
    454            this.motionY *= (double)f4;
    455            this.motionZ *= (double)f4;
    456            this.motionY -= (double)f1;
    457            this.setPosition(this.posX, this.posY, this.posZ);
    458            this.doBlockCollisions();
    459        }
    460    }
    461
    462    /**
    463     * (abstract) Protected helper method to write subclass entity data to NBT.
    464     */
    465    public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    466    {
    467        par1NBTTagCompound.setShort("xTile", (short)this.xTile);
    468        par1NBTTagCompound.setShort("yTile", (short)this.yTile);
    469        par1NBTTagCompound.setShort("zTile", (short)this.zTile);
    470        par1NBTTagCompound.setByte("inTile", (byte)this.inTile);
    471        par1NBTTagCompound.setByte("inData", (byte)this.inData);
    472        par1NBTTagCompound.setByte("shake", (byte)this.arrowShake);
    473        par1NBTTagCompound.setByte("inGround", (byte)(this.inGround ? 1 : 0));
    474        par1NBTTagCompound.setByte("pickup", (byte)this.canBePickedUp);
    475        par1NBTTagCompound.setDouble("damage", this.damage);
    476    }
    477
    478    /**
    479     * (abstract) Protected helper method to read subclass entity data from NBT.
    480     */
    481    public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    482    {
    483        this.xTile = par1NBTTagCompound.getShort("xTile");
    484        this.yTile = par1NBTTagCompound.getShort("yTile");
    485        this.zTile = par1NBTTagCompound.getShort("zTile");
    486        this.inTile = par1NBTTagCompound.getByte("inTile") & 255;
    487        this.inData = par1NBTTagCompound.getByte("inData") & 255;
    488        this.arrowShake = par1NBTTagCompound.getByte("shake") & 255;
    489        this.inGround = par1NBTTagCompound.getByte("inGround") == 1;
    490
    491        if (par1NBTTagCompound.hasKey("damage"))
    492        {
    493            this.damage = par1NBTTagCompound.getDouble("damage");
    494        }
    495
    496        if (par1NBTTagCompound.hasKey("pickup"))
    497        {
    498            this.canBePickedUp = par1NBTTagCompound.getByte("pickup");
    499        }
    500        else if (par1NBTTagCompound.hasKey("player"))
    501        {
    502            this.canBePickedUp = par1NBTTagCompound.getBoolean("player") ? 1 : 0;
    503        }
    504    }
    505
    506    /**
    507     * Called by a player entity when they collide with an entity
    508     */
    509    public void onCollideWithPlayer(EntityPlayer par1EntityPlayer)
    510    {
    511        if (!this.worldObj.isRemote && this.inGround && this.arrowShake <= 0)
    512        {
    513            boolean flag = this.canBePickedUp == 1 || this.canBePickedUp == 2 && par1EntityPlayer.capabilities.isCreativeMode;
    514
    515            if (this.canBePickedUp == 1 && !par1EntityPlayer.inventory.addItemStackToInventory(new ItemStack(Item.arrow, 1)))
    516            {
    517                flag = false;
    518            }
    519
    520            if (flag)
    521            {
    522                this.playSound("random.pop", 0.2F, ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.0F) * 2.0F);
    523                par1EntityPlayer.onItemPickup(this, 1);
    524                this.setDead();
    525            }
    526        }
    527    }
    528
    529    /**
    530     * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
    531     * prevent them from trampling crops
    532     */
    533    protected boolean canTriggerWalking()
    534    {
    535        return false;
    536    }
    537
    538    @SideOnly(Side.CLIENT)
    539    public float getShadowSize()
    540    {
    541        return 0.0F;
    542    }
    543
    544    public void setDamage(double par1)
    545    {
    546        this.damage = par1;
    547    }
    548
    549    public double getDamage()
    550    {
    551        return this.damage;
    552    }
    553
    554    /**
    555     * Sets the amount of knockback the arrow applies when it hits a mob.
    556     */
    557    public void setKnockbackStrength(int par1)
    558    {
    559        this.knockbackStrength = par1;
    560    }
    561
    562    /**
    563     * If returns false, the item will not inflict any damage against entities.
    564     */
    565    public boolean canAttackWithItem()
    566    {
    567        return false;
    568    }
    569
    570    /**
    571     * Whether the arrow has a stream of critical hit particles flying behind it.
    572     */
    573    public void setIsCritical(boolean par1)
    574    {
    575        byte b0 = this.dataWatcher.getWatchableObjectByte(16);
    576
    577        if (par1)
    578        {
    579            this.dataWatcher.updateObject(16, Byte.valueOf((byte)(b0 | 1)));
    580        }
    581        else
    582        {
    583            this.dataWatcher.updateObject(16, Byte.valueOf((byte)(b0 & -2)));
    584        }
    585    }
    586
    587    /**
    588     * Whether the arrow has a stream of critical hit particles flying behind it.
    589     */
    590    public boolean getIsCritical()
    591    {
    592        byte b0 = this.dataWatcher.getWatchableObjectByte(16);
    593        return (b0 & 1) != 0;
    594    }
    595}