Code/net/minecraft/world/entity/ai/behavior/SleepInBed.java

package net.minecraft.world.entity.ai.behavior;

import com.google.common.collect.ImmutableMap;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import net.minecraft.core.BlockPos;
import net.minecraft.core.GlobalPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.tags.BlockTags;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.ai.Brain;
import net.minecraft.world.entity.ai.memory.MemoryModuleType;
import net.minecraft.world.entity.ai.memory.MemoryStatus;
import net.minecraft.world.entity.schedule.Activity;
import net.minecraft.world.level.block.BedBlock;
import net.minecraft.world.level.block.state.BlockState;

public class SleepInBed extends Behavior<LivingEntity> {
    public static final int COOLDOWN_AFTER_BEING_WOKEN = 100;
    private long nextOkStartTime;

    public SleepInBed() {
        super(ImmutableMap.of(MemoryModuleType.HOME, MemoryStatus.VALUE_PRESENT, MemoryModuleType.LAST_WOKEN, MemoryStatus.REGISTERED));
    }

    @Override
    protected boolean checkExtraStartConditions(ServerLevel p_24154_, LivingEntity p_24155_) {
        if (p_24155_.isPassenger()) {
            return false;
        } else {
            Brain<?> brain = p_24155_.getBrain();
            GlobalPos globalpos = brain.getMemory(MemoryModuleType.HOME).get();
            if (p_24154_.dimension() != globalpos.dimension()) {
                return false;
            } else {
                Optional<Long> optional = brain.getMemory(MemoryModuleType.LAST_WOKEN);
                if (optional.isPresent()) {
                    long i = p_24154_.getGameTime() - optional.get();
                    if (i > 0L && i < 100L) {
                        return false;
                    }
                }

                BlockState blockstate = p_24154_.getBlockState(globalpos.pos());
                return globalpos.pos().closerToCenterThan(p_24155_.position(), 2.0)
                    && blockstate.is(BlockTags.BEDS)
                    && !blockstate.getValue(BedBlock.OCCUPIED);
            }
        }
    }

    @Override
    protected boolean canStillUse(ServerLevel p_24161_, LivingEntity p_24162_, long p_24163_) {
        Optional<GlobalPos> optional = p_24162_.getBrain().getMemory(MemoryModuleType.HOME);
        if (optional.isEmpty()) {
            return false;
        } else {
            BlockPos blockpos = optional.get().pos();
            return p_24162_.getBrain().isActive(Activity.REST)
                && p_24162_.getY() > blockpos.getY() + 0.4
                && blockpos.closerToCenterThan(p_24162_.position(), 1.14);
        }
    }

    @Override
    protected void start(ServerLevel p_24157_, LivingEntity p_24158_, long p_24159_) {
        if (p_24159_ > this.nextOkStartTime) {
            Brain<?> brain = p_24158_.getBrain();
            if (brain.hasMemoryValue(MemoryModuleType.DOORS_TO_CLOSE)) {
                Set<GlobalPos> set = brain.getMemory(MemoryModuleType.DOORS_TO_CLOSE).get();
                Optional<List<LivingEntity>> optional;
                if (brain.hasMemoryValue(MemoryModuleType.NEAREST_LIVING_ENTITIES)) {
                    optional = brain.getMemory(MemoryModuleType.NEAREST_LIVING_ENTITIES);
                } else {
                    optional = Optional.empty();
                }

                InteractWithDoor.closeDoorsThatIHaveOpenedOrPassedThrough(p_24157_, p_24158_, null, null, set, optional);
            }

            p_24158_.startSleeping(p_24158_.getBrain().getMemory(MemoryModuleType.HOME).get().pos());
        }
    }

    @Override
    protected boolean timedOut(long p_24152_) {
        return false;
    }

    @Override
    protected void stop(ServerLevel p_24165_, LivingEntity p_24166_, long p_24167_) {
        if (p_24166_.isSleeping()) {
            p_24166_.stopSleeping();
            this.nextOkStartTime = p_24167_ + 40L;
        }
    }
}