关于java:Minecraft-1122模组开发二十三-霰弹枪

package com.Joy187.newmod.entity;
import java.util.Random;
import java.util.UUID;
import javax.annotation.Nullable;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.monster.EntityWitherSkeleton;
import net.minecraft.entity.monster.EntityZombie;
import net.minecraft.entity.projectile.EntityFireball;
import net.minecraft.entity.projectile.EntitySnowball;
import net.minecraft.entity.projectile.EntityThrowable;
import net.minecraft.network.datasync.DataParameter;
import net.minecraft.network.datasync.DataSerializers;
import net.minecraft.network.datasync.EntityDataManager;
import net.minecraft.util.DamageSource;
import net.minecraft.util.math.RayTraceResult;
import net.minecraft.world.World;
import net.minecraft.world.WorldServer;
public class EntityM1897B extends EntitySnowball{

private static final DataParameter<Byte> CRITICAL = EntityDataManager.<Byte>createKey(EntityM1897B.class, DataSerializers.BYTE);protected EntityLivingBase thrower;private String throwerName;public Entity shootingEntity;private double damage;  //定义子弹挫伤public EntityM1897B(World worldIn){    super(worldIn);    this.setSize(1.0F, 1.0F);   //设置子弹大小    this.damage = 8.0D;     //设定子弹挫伤}public EntityM1897B(World worldIn, EntityLivingBase throwerIn){    super(worldIn, throwerIn);}public EntityM1897B(World worldIn, double x, double y, double z){    this(worldIn);    this.setPosition(x, y, z);}    //定义子弹撞击物体的函数protected void onImpact(RayTraceResult result){    Random rand = new Random();    float k = rand.nextFloat();    if (result.entityHit != null)    {        int i = 6;        //如果子弹打到Zombie或凋零，[金融期货](https://www.gendan5.com/futures/ff.html)就增大3点攻击力        if (result.entityHit instanceof EntityZombie || result.entityHit instanceof EntityWitherSkeleton)        {            i = 9;        }           result.entityHit.attackEntityFrom(DamageSource.causeThrownDamage(this, this.getThrower()), (float)i*(1+k));    }    //this.world.newExplosion((Entity)null, this.posX, this.posY, this.posZ, (float)this.explosionPower, false, true);    if (!this.world.isRemote)    {        this.world.setEntityState(this, (byte)3);        this.setDead();    }} @Nullablepublic EntityLivingBase getThrower(){    if (this.thrower == null && this.throwerName != null && !this.throwerName.isEmpty())    {        this.thrower = this.world.getPlayerEntityByName(this.throwerName);        if (this.thrower == null && this.world instanceof WorldServer)        {            try            {                Entity entity = ((WorldServer)this.world).getEntityFromUuid(UUID.fromString(this.throwerName));                if (entity instanceof EntityLivingBase)                {                    this.thrower = (EntityLivingBase)entity;                }            }            catch (Throwable var2)            {                this.thrower = null;            }        }    }    return this.thrower;}    public void setIsCritical(boolean critical){    byte b0 = ((Byte)this.dataManager.get(CRITICAL)).byteValue();    if (critical)    {        this.dataManager.set(CRITICAL, Byte.valueOf((byte)(b0 | 1)));    }    else    {        this.dataManager.set(CRITICAL, Byte.valueOf((byte)(b0 & -2)));    }}     public double getDamage(){    return this.damage;}public void setDamage(double damageIn){    this.damage = damageIn;}

}