i have tried several things to get it to change when the day changes to night i can only get it to be lit up if i place it at night

package com.freyebeans2506.faltthethe.contentfeatures.blocks;

import net.minecraft.block.BedBlock;
import net.minecraft.block.Block;
import net.minecraft.block.BlockState;
import net.minecraft.block.Blocks;
import net.minecraft.fluid.Fluids;
import net.minecraft.item.BlockItemUseContext;
import net.minecraft.state.BooleanProperty;
import net.minecraft.state.StateContainer;
import net.minecraft.state.properties.BlockStateProperties;
import net.minecraft.util.Direction;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.IWorld;
import net.minecraft.world.LightType;
import net.minecraft.world.World;
import net.minecraft.world.server.ServerWorld;

import javax.annotation.Nullable;
import java.util.Random;

public class ABBlock extends Block {
    public static final BooleanProperty LIT = BlockStateProperties.LIT;
    public ABBlock(Properties properties) {
        super(properties);
        this.registerDefaultState(this.stateDefinition.any().setValue(LIT, Boolean.valueOf(false)));
    }

    @Nullable
    public BlockState getStateForPlacement(BlockItemUseContext p_196258_1_) {
        return this.defaultBlockState().setValue(LIT, Boolean.valueOf(p_196258_1_.getLevel().isNight()));
    }

    protected void createBlockStateDefinition(StateContainer.Builder<Block, BlockState> p_206840_1_) {
        p_206840_1_.add(LIT);
    }
}

this has been causing me pain for the past 3 hours

you need to update the Block, since you only set the State when you place it

Hint: take a look at the daylight sensor.

21 hours ago, Draco18s said:

Hint: take a look at the daylight sensor.

could you elaborate

This block surely has code you can look at, yeah?

Go look at it.

10 hours ago, FREyebeans2506 said:

could you elaborate

On your IDE you probably have a folder called "External Libraries" on your project tree. In there you can find among a whole lot of other things, one folder that in particular may come handy. For example for 1.17.1 (Should be similar if not the same for 1.16.5)

Gradle: net.minecraftforge:forge:1.17.1:37.1.1_mapped_official_1.17.1 (For 1.16.5 the name will change a little bit of course)

When you open this tree you will find net > minecraft > level > world > block > DaylightDetectorBlock

In there you can take a look at it's code to see what this block is doing in order to detect when it's daylight and when it's not. Haven't been doing MC modding in a time, but I guess this block been that it extends an entity block, it "ticks" and so has this method where the "magic" happens. tickEntity

1 minute ago, diesieben07 said:

Or... you know... Use the "go to class" feature that any IDE has.

I need to learn all those shortcuts. 

Will take a look at that, didn't know what it was called, but yes, for sure comes way more handy that trying to figure out where a class exists.

I tend to forget that one, but do remember F4, which opens the type hierarchy for a focused Type, and if I know that I'm looking for a block (or PlayerEvent, or whatever), I can quickly make a variable and F4 it and browse.

On 12/14/2021 at 9:17 PM, Draco18s said:

This block surely has code you can look at, yeah?

Go look at it.

thank you

it worked