Code/net/minecraft/world/entity/animal/AbstractCow.java

package net.minecraft.world.entity.animal;

import net.minecraft.core.BlockPos;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.tags.ItemTags;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.EntityDimensions;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.Pose;
import net.minecraft.world.entity.ai.attributes.AttributeSupplier;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.entity.ai.goal.BreedGoal;
import net.minecraft.world.entity.ai.goal.FloatGoal;
import net.minecraft.world.entity.ai.goal.FollowParentGoal;
import net.minecraft.world.entity.ai.goal.LookAtPlayerGoal;
import net.minecraft.world.entity.ai.goal.PanicGoal;
import net.minecraft.world.entity.ai.goal.RandomLookAroundGoal;
import net.minecraft.world.entity.ai.goal.TemptGoal;
import net.minecraft.world.entity.ai.goal.WaterAvoidingRandomStrollGoal;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.ItemUtils;
import net.minecraft.world.item.Items;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.state.BlockState;

public abstract class AbstractCow extends Animal {
    private static final EntityDimensions BABY_DIMENSIONS = EntityType.COW.getDimensions().scale(0.5F).withEyeHeight(0.665F);

    public AbstractCow(EntityType<? extends AbstractCow> p_394092_, Level p_396667_) {
        super(p_394092_, p_396667_);
    }

    @Override
    protected void registerGoals() {
        this.goalSelector.addGoal(0, new FloatGoal(this));
        this.goalSelector.addGoal(1, new PanicGoal(this, 2.0));
        this.goalSelector.addGoal(2, new BreedGoal(this, 1.0));
        this.goalSelector.addGoal(3, new TemptGoal(this, 1.25, p_393987_ -> p_393987_.is(ItemTags.COW_FOOD), false));
        this.goalSelector.addGoal(4, new FollowParentGoal(this, 1.25));
        this.goalSelector.addGoal(5, new WaterAvoidingRandomStrollGoal(this, 1.0));
        this.goalSelector.addGoal(6, new LookAtPlayerGoal(this, Player.class, 6.0F));
        this.goalSelector.addGoal(7, new RandomLookAroundGoal(this));
    }

    @Override
    public boolean isFood(ItemStack p_398041_) {
        return p_398041_.is(ItemTags.COW_FOOD);
    }

    public static AttributeSupplier.Builder createAttributes() {
        return Animal.createAnimalAttributes().add(Attributes.MAX_HEALTH, 10.0).add(Attributes.MOVEMENT_SPEED, 0.2F);
    }

    @Override
    protected SoundEvent getAmbientSound() {
        return SoundEvents.COW_AMBIENT;
    }

    @Override
    protected SoundEvent getHurtSound(DamageSource p_396909_) {
        return SoundEvents.COW_HURT;
    }

    @Override
    protected SoundEvent getDeathSound() {
        return SoundEvents.COW_DEATH;
    }

    @Override
    protected void playStepSound(BlockPos p_393384_, BlockState p_397013_) {
        this.playSound(SoundEvents.COW_STEP, 0.15F, 1.0F);
    }

    @Override
    protected float getSoundVolume() {
        return 0.4F;
    }

    @Override
    public InteractionResult mobInteract(Player p_391681_, InteractionHand p_393090_) {
        ItemStack itemstack = p_391681_.getItemInHand(p_393090_);
        if (itemstack.is(Items.BUCKET) && !this.isBaby()) {
            p_391681_.playSound(SoundEvents.COW_MILK, 1.0F, 1.0F);
            ItemStack itemstack1 = ItemUtils.createFilledResult(itemstack, p_391681_, Items.MILK_BUCKET.getDefaultInstance());
            p_391681_.setItemInHand(p_393090_, itemstack1);
            return InteractionResult.SUCCESS;
        } else {
            return super.mobInteract(p_391681_, p_393090_);
        }
    }

    @Override
    public EntityDimensions getDefaultDimensions(Pose p_396193_) {
        return this.isBaby() ? BABY_DIMENSIONS : super.getDefaultDimensions(p_396193_);
    }
}