Java DifficultyInstance类代码示例

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Called only once on an entity when first time spawned, via egg, mob spawner, natural spawning etc, but not called
 * when entity is reloaded from nbt. Mainly used for initializing attributes and inventory
 */
@Nullable
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, @Nullable IEntityLivingData livingdata)
{
    this.getEntityAttribute(SharedMonsterAttributes.FOLLOW_RANGE).applyModifier(new AttributeModifier("Random spawn bonus", this.rand.nextGaussian() * 0.05D, 1));

    if (this.rand.nextFloat() < 0.05F)
    {
        this.setLeftHanded(true);
    }
    else
    {
        this.setLeftHanded(false);
    }

    return livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
@Nullable
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, @Nullable IEntityLivingData livingdata) {
	livingdata = super.onInitialSpawn(difficulty, livingdata);
	float f = difficulty.getClampedAdditionalDifficulty();
	this.setCanPickUpLoot(false);
	this.setEquipmentBasedOnDifficulty(difficulty);
	this.setEnchantmentBasedOnDifficulty(difficulty);
	this.setCombatTask();

	this.getEntityAttribute(SharedMonsterAttributes.KNOCKBACK_RESISTANCE).applyModifier(
			new AttributeModifier("Random spawn bonus", this.rand.nextDouble() * 0.05000000074505806D, 0));
	double d0 = this.rand.nextDouble() * 1.5D * (double) f;

	if (d0 > 1.0D) {
		this.getEntityAttribute(SharedMonsterAttributes.FOLLOW_RANGE)
				.applyModifier(new AttributeModifier("Random zombie-spawn bonus", d0, 2));
	}

	return livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Enchants Entity's current equipments based on given DifficultyInstance
 */
protected void setEnchantmentBasedOnDifficulty(DifficultyInstance difficulty)
{
    float f = difficulty.getClampedAdditionalDifficulty();

    if (this.getHeldItem() != null && this.rand.nextFloat() < 0.25F * f)
    {
        EnchantmentHelper.addRandomEnchantment(this.rand, this.getHeldItem(), (int)(5.0F + f * (float)this.rand.nextInt(18)));
    }

    for (int i = 0; i < 4; ++i)
    {
        ItemStack itemstack = this.getCurrentArmor(i);

        if (itemstack != null && this.rand.nextFloat() < 0.5F * f)
        {
            EnchantmentHelper.addRandomEnchantment(this.rand, itemstack, (int)(5.0F + f * (float)this.rand.nextInt(18)));
        }
    }
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Called only once on an entity when first time spawned, via egg, mob spawner, natural spawning etc, but not called
 * when entity is reloaded from nbt. Mainly used for initializing attributes and inventory
 */
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, IEntityLivingData livingdata)
{
    livingdata = super.onInitialSpawn(difficulty, livingdata);
    int i = this.rand.nextInt(6);
    boolean flag = false;

    if (livingdata instanceof EntityRabbit.RabbitTypeData)
    {
        i = ((EntityRabbit.RabbitTypeData)livingdata).typeData;
        flag = true;
    }
    else
    {
        livingdata = new EntityRabbit.RabbitTypeData(i);
    }

    this.setRabbitType(i);

    if (flag)
    {
        this.setGrowingAge(-24000);
    }

    return livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Called only once on an entity when first time spawned, via egg, mob spawner, natural spawning etc, but not called
 * when entity is reloaded from nbt. Mainly used for initializing attributes and inventory
 */
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, IEntityLivingData livingdata)
{
    if (livingdata instanceof EntityPolarBear.GroupData)
    {
        if (((EntityPolarBear.GroupData)livingdata).madeParent)
        {
            this.setGrowingAge(-24000);
        }
    }
    else
    {
        EntityPolarBear.GroupData entitypolarbear$groupdata = new EntityPolarBear.GroupData();
        entitypolarbear$groupdata.madeParent = true;
        livingdata = entitypolarbear$groupdata;
    }

    return (IEntityLivingData)livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Gives armor or weapon for entity based on given DifficultyInstance
 */
protected void setEquipmentBasedOnDifficulty(DifficultyInstance difficulty)
{
    super.setEquipmentBasedOnDifficulty(difficulty);

    if (this.rand.nextFloat() < (this.worldObj.getDifficulty() == EnumDifficulty.HARD ? 0.05F : 0.01F))
    {
        int i = this.rand.nextInt(3);

        if (i == 0)
        {
            this.setCurrentItemOrArmor(0, new ItemStack(Items.iron_sword));
        }
        else
        {
            this.setCurrentItemOrArmor(0, new ItemStack(Items.iron_shovel));
        }
    }
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Called only once on an entity when first time spawned, via egg, mob spawner, natural spawning etc, but not called
 * when entity is reloaded from nbt. Mainly used for initializing attributes and inventory
 */
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, IEntityLivingData livingdata)
{
    livingdata = super.onInitialSpawn(difficulty, livingdata);

    if (this.worldObj.rand.nextInt(7) == 0)
    {
        for (int i = 0; i < 2; ++i)
        {
            EntityOcelot entityocelot = new EntityOcelot(this.worldObj);
            entityocelot.setLocationAndAngles(this.posX, this.posY, this.posZ, this.rotationYaw, 0.0F);
            entityocelot.setGrowingAge(-24000);
            this.worldObj.spawnEntityInWorld(entityocelot);
        }
    }

    return livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
private EntitySkeleton createSkeleton(DifficultyInstance p_188514_1_, EntityHorse p_188514_2_)
{
    EntitySkeleton entityskeleton = new EntitySkeleton(p_188514_2_.worldObj);
    entityskeleton.onInitialSpawn(p_188514_1_, (IEntityLivingData)null);
    entityskeleton.setPosition(p_188514_2_.posX, p_188514_2_.posY, p_188514_2_.posZ);
    entityskeleton.hurtResistantTime = 60;
    entityskeleton.enablePersistence();

    if (entityskeleton.getItemStackFromSlot(EntityEquipmentSlot.HEAD) == null)
    {
        entityskeleton.setItemStackToSlot(EntityEquipmentSlot.HEAD, new ItemStack(Items.IRON_HELMET));
    }

    EnchantmentHelper.addRandomEnchantment(entityskeleton.getRNG(), entityskeleton.getHeldItemMainhand(), (int)(5.0F + p_188514_1_.getClampedAdditionalDifficulty() * (float)entityskeleton.getRNG().nextInt(18)), false);
    EnchantmentHelper.addRandomEnchantment(entityskeleton.getRNG(), entityskeleton.getItemStackFromSlot(EntityEquipmentSlot.HEAD), (int)(5.0F + p_188514_1_.getClampedAdditionalDifficulty() * (float)entityskeleton.getRNG().nextInt(18)), false);
    entityskeleton.worldObj.spawnEntityInWorld(entityskeleton);
    return entityskeleton;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Updates the task
 */
public void updateTask()
{
    DifficultyInstance difficultyinstance = this.horse.worldObj.getDifficultyForLocation(new BlockPos(this.horse));
    this.horse.setSkeletonTrap(false);
    this.horse.setType(HorseType.SKELETON);
    this.horse.setHorseTamed(true);
    this.horse.setGrowingAge(0);
    this.horse.worldObj.addWeatherEffect(new EntityLightningBolt(this.horse.worldObj, this.horse.posX, this.horse.posY, this.horse.posZ, true));
    EntitySkeleton entityskeleton = this.createSkeleton(difficultyinstance, this.horse);
    entityskeleton.startRiding(this.horse);

    for (int i = 0; i < 3; ++i)
    {
        EntityHorse entityhorse = this.createHorse(difficultyinstance);
        EntitySkeleton entityskeleton1 = this.createSkeleton(difficultyinstance, entityhorse);
        entityskeleton1.startRiding(entityhorse);
        entityhorse.addVelocity(this.horse.getRNG().nextGaussian() * 0.5D, 0.0D, this.horse.getRNG().nextGaussian() * 0.5D);
    }
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Called only once on an entity when first time spawned, via egg, mob spawner, natural spawning etc, but not called
 * when entity is reloaded from nbt. Mainly used for initializing attributes and inventory
 */
@Nullable
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, @Nullable IEntityLivingData livingdata)
{
    livingdata = super.onInitialSpawn(difficulty, livingdata);

    if (this.getTameSkin() == 0 && this.worldObj.rand.nextInt(7) == 0)
    {
        for (int i = 0; i < 2; ++i)
        {
            EntityOcelot entityocelot = new EntityOcelot(this.worldObj);
            entityocelot.setLocationAndAngles(this.posX, this.posY, this.posZ, this.rotationYaw, 0.0F);
            entityocelot.setGrowingAge(-24000);
            this.worldObj.spawnEntityInWorld(entityocelot);
        }
    }

    return livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Overridden to fire "fake" arrows instead of real ones.
 * see {@link net.minecraft.entity.monster.EntitySkeleton#attackEntityWithRangedAttack(net.minecraft.entity.EntityLivingBase, float)}.
 */
@Override
public void attackEntityWithRangedAttack(EntityLivingBase target, float distanceFactor)
{
	EntityFakeArrow entityarrow = new EntityFakeArrow(this.world, this);
	double x = target.posX - this.posX;
	double y = target.getEntityBoundingBox().minY + (double)(target.height / 3.0F) - entityarrow.posY;
	double z = target.posZ - this.posZ;
	double d3 = (double)MathHelper.sqrt(x * x + z * z);
	entityarrow.setThrowableHeading(x, y + d3 * 0.2D, z, 1.6F, (float)(14 - this.world.getDifficulty().getDifficultyId() * 4));

	DifficultyInstance difficultyinstance = this.world.getDifficultyForLocation(new BlockPos(this));
	entityarrow.setDamage((double)(distanceFactor * 2.0F) + this.rand.nextGaussian() * 0.25D + (double)((float)this.world.getDifficulty().getDifficultyId() * 0.11F));

	this.playSound(SoundEvents.ENTITY_SKELETON_SHOOT, 1.0F, 1.0F / (this.getRNG().nextFloat() * 0.4F + 0.8F));
	this.world.spawnEntity(entityarrow);
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Overridden to call {@link EntityZombie#setChild(boolean)} to force all ZombieHands to be adults, and to create HuskHands in desert biomes
 */
@Override
public IEntityLivingData onInitialSpawn(DifficultyInstance difficulty, @Nullable IEntityLivingData livingdata)
{
	super.onInitialSpawn(difficulty, livingdata);
	this.setChild(false);

	// *** logic copied from 1.10 implementation of EntityZombie
	Biome biome = this.world.getBiome(new BlockPos(this));
	if (biome instanceof BiomeDesert && this.world.canSeeSky(new BlockPos(this)) && this.rand.nextInt(5) != 0)
	{
		this.setZombieType(ZombieType.HUSK);
	}
	// *** logic copied from 1.10 implementation of EntityZombie

	return livingdata;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Updates the task
 */
public void updateTask()
{
    DifficultyInstance difficultyinstance = this.horse.world.getDifficultyForLocation(new BlockPos(this.horse));
    this.horse.func_190691_p(false);
    this.horse.setHorseTamed(true);
    this.horse.setGrowingAge(0);
    this.horse.world.addWeatherEffect(new EntityLightningBolt(this.horse.world, this.horse.posX, this.horse.posY, this.horse.posZ, true));
    EntitySkeleton entityskeleton = this.createSkeleton(difficultyinstance, this.horse);
    entityskeleton.startRiding(this.horse);

    for (int i = 0; i < 3; ++i)
    {
        AbstractHorse abstracthorse = this.createHorse(difficultyinstance);
        EntitySkeleton entityskeleton1 = this.createSkeleton(difficultyinstance, abstracthorse);
        entityskeleton1.startRiding(abstracthorse);
        abstracthorse.addVelocity(this.horse.getRNG().nextGaussian() * 0.5D, 0.0D, this.horse.getRNG().nextGaussian() * 0.5D);
    }
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
private EntitySkeleton createSkeleton(DifficultyInstance p_188514_1_, AbstractHorse p_188514_2_)
{
    EntitySkeleton entityskeleton = new EntitySkeleton(p_188514_2_.world);
    entityskeleton.onInitialSpawn(p_188514_1_, (IEntityLivingData)null);
    entityskeleton.setPosition(p_188514_2_.posX, p_188514_2_.posY, p_188514_2_.posZ);
    entityskeleton.hurtResistantTime = 60;
    entityskeleton.enablePersistence();

    if (entityskeleton.getItemStackFromSlot(EntityEquipmentSlot.HEAD).func_190926_b())
    {
        entityskeleton.setItemStackToSlot(EntityEquipmentSlot.HEAD, new ItemStack(Items.IRON_HELMET));
    }

    entityskeleton.setItemStackToSlot(EntityEquipmentSlot.MAINHAND, EnchantmentHelper.addRandomEnchantment(entityskeleton.getRNG(), entityskeleton.getHeldItemMainhand(), (int)(5.0F + p_188514_1_.getClampedAdditionalDifficulty() * (float)entityskeleton.getRNG().nextInt(18)), false));
    entityskeleton.setItemStackToSlot(EntityEquipmentSlot.HEAD, EnchantmentHelper.addRandomEnchantment(entityskeleton.getRNG(), entityskeleton.getItemStackFromSlot(EntityEquipmentSlot.HEAD), (int)(5.0F + p_188514_1_.getClampedAdditionalDifficulty() * (float)entityskeleton.getRNG().nextInt(18)), false));
    entityskeleton.world.spawnEntityInWorld(entityskeleton);
    return entityskeleton;
}
 

import net.minecraft.world.DifficultyInstance; //导入依赖的package包/类
/**
 * Enchants Entity's current equipments based on given DifficultyInstance
 */
protected void setEnchantmentBasedOnDifficulty(DifficultyInstance difficulty)
{
    float f = difficulty.getClampedAdditionalDifficulty();

    if (!this.getHeldItemMainhand().func_190926_b() && this.rand.nextFloat() < 0.25F * f)
    {
        this.setItemStackToSlot(EntityEquipmentSlot.MAINHAND, EnchantmentHelper.addRandomEnchantment(this.rand, this.getHeldItemMainhand(), (int)(5.0F + f * (float)this.rand.nextInt(18)), false));
    }

    for (EntityEquipmentSlot entityequipmentslot : EntityEquipmentSlot.values())
    {
        if (entityequipmentslot.getSlotType() == EntityEquipmentSlot.Type.ARMOR)
        {
            ItemStack itemstack = this.getItemStackFromSlot(entityequipmentslot);

            if (!itemstack.func_190926_b() && this.rand.nextFloat() < 0.5F * f)
            {
                this.setItemStackToSlot(entityequipmentslot, EnchantmentHelper.addRandomEnchantment(this.rand, itemstack, (int)(5.0F + f * (float)this.rand.nextInt(18)), false));
            }
        }
    }
}