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}