[1.8.1] On/Off Light Block

This tutorial is about how to make a block that gives off light but can be switched on and off.

Code:

package net.minecraft.src;

import java.util.Random;

public class BlockNamehere extends Block
{

    public BlockNamehere(int i, int j, boolean flag)
    {
        super(i, Material.ground);
        blockIndexInTexture = j;
        isActive = flag;
        if(isActive)
        {
            super.setLightValue(1.0F);
        }
    }

    public int idDropped(int i, Random random)
    {
        return mod_Namehere.NamehereOff.blockID;
    }

    public void onNeighborBlockChange(World world, int i, int j, int k, int l)
    {
        if(world.isBlockIndirectlyGettingPowered(i, j, k))
        {
            world.setBlockWithNotify(i, j, k, mod_Namehere.NamehereOn.blockID);
        } else
        {
            world.setBlockWithNotify(i, j, k, mod_Namehere.NamehereOff.blockID);
        }
    }

    private boolean isActive;
}


Code:

package net.minecraft.src;

public class mod_Namehere extends BaseMod
{

    public mod_Namehere()
    {
        ModLoader.RegisterBlock(NamehereOn);
        ModLoader.RegisterBlock(NamehereOff);
        ModLoader.AddName(NamehereOn, "Namehere");
        ModLoader.AddName(NamehereOff, "Namehere");
        ModLoader.AddRecipe(new ItemStack(NamehereOff, 1), new Object[] {
            "XXX", "X@X", "XXX", Character.valueOf('X'), Block.glass, Character.valueOf('@'), Block.torchWood
        });
    }

    public String Version()
    {
        return "1.6.6";
    }

    public static Block NamehereOn;
    public static Block NamehereOff;
    public static int NamehereTextureOff;
    public static int NamehereTextureOn;

    static
    {
        NamehereTextureOff = ModLoader.getUniqueSpriteIndex("/terrain.png");
        NamehereTextureOn = ModLoader.getUniqueSpriteIndex("/terrain.png");
        NamehereOn = (new BlockNamehere(249, NamehereTextureOn, true)).setHardness(0.3F).setResistance(5000.0F).setBlockName("NamehereOn");
        NamehereOff = (new BlockNamehere(248, NamehereTextureOff, false)).setHardness(0.3F).setResistance(5000.0F).setBlockName("NamehereOff");
        ModLoader.addOverride("/terrain.png", "/NamehereOff.png", NamehereTextureOff);
        ModLoader.addOverride("/terrain.png", "/NamehereOn.png", NamehereTextureOn);
    }
}


1. After making those files, make two block textures called "NamehereOff" and "NamehereOn".

2. In "mod_Namehere" at the bottom in "static" on the 3rd and 5th line, where it says 249 and 248, that is the block ID so you can change it to what ever you want.

3. All of this should recompile fine without any errors.

Just wanted to let you know it works with 1.8.1
Also can you code It to preform a strobe action?
Like on this block you can set it up on a clock and it wors
But I want a code versIon if possible?

I have never done this before but, if you maybe set up a tick rate and update the light to be on or off every tick, it might work.

o well do you mind trying it?

ill try to... that would be awesome

I've done it, but you need to really spam a redstone tick clock(if you use stranegth's code) or (what I also added) is make it swap on right click, then spam that. (somehow it's spamproof - never broke once) you also need to make sure the setrequiresselfnotify thing is used, otherwise the light doesn't update that quickly.

I thought I was the only one to make something like this, but I should've known stength knows all

Might lagg/crash a majority of people using it.

breakyorself wrote:Might lagg/crash a majority of people using it.

Actually it doesn't cause any sort of crash, the amount of updates will lag yes but only if your using an ungodly amount of the lgiht blocks.

groxmapper wrote:

breakyorself wrote:Might lagg/crash a majority of people using it.

Actually it doesn't cause any sort of crash, the amount of updates will lag yes but only if your using an ungodly amount of the lgiht blocks.

you mind making a tut?

i was gonna try coding where it stays powered but the light spams on and off

im still not very good at ticks ect..
:/

i tried doing it like so:

Spoiler:

but it freezes mc

Code:

 public void updateTick(World world, int i, int j, int k, Random random)
    {
        boolean flag = func_30002_h(world, i, j, k);
        for(; torchUpdates.size() > 0 && world.getWorldTime() - ((RedstoneUpdateInfo)torchUpdates.get(0)).updateTime > 100L; torchUpdates.remove(0)) { }
        if(torchActive)
        {
            if(flag)
            {
                world.setBlockAndMetadataWithNotify(i, j, k, Block.torchRedstoneIdle.blockID, world.getBlockMetadata(i, j, k));
                if(checkForBurnout(world, i, j, k, true))
                {
                    world.playSoundEffect((float)i + 0.5F, (float)j + 0.5F, (float)k + 0.5F, "random.fizz", 0.5F, 2.6F + (world.rand.nextFloat() - world.rand.nextFloat()) * 0.8F);
                    for(int l = 0; l < 5; l++)
                    {
                        double d = (double)i + random.nextDouble() * 0.59999999999999998D + 0.20000000000000001D;
                        double d1 = (double)j + random.nextDouble() * 0.59999999999999998D + 0.20000000000000001D;
                        double d2 = (double)k + random.nextDouble() * 0.59999999999999998D + 0.20000000000000001D;
                        world.spawnParticle("smoke", d, d1, d2, 0.0D, 0.0D, 0.0D);
                    }

                }
            }
        }


cant you edit this somehow?
and place the isActive right now

Please post this sort of stuff in the help section.

O well also you can change title to [1.8.1]
It still works lol

the undecided t wrote:i tried doing it like so:

Spoiler:

but it freezes mc

that will crash due to the fact being youve not only set an strobe BUt no time in between and seeing how its done it gets more laggy and seeing how fast things process you would see why this would be an issue

Maybe a slower one?

yer but he needs to include an integer that is a pause maybe doing something like

Code:

if redcurrent = true { for(i=0,i++)  while (i>10) pause [amount of time] i=0

or whatever you want it to be I am a novice in java. you could take out the for bit but that would not allow time for the reset in the strobe

I would to be honest just set up a redstone clock

Well you can do a working strobe using this code
But I was talking about a coded strobe

I see you could try using the forif( and then pausetime

Well there is the like.. Grrrr forgot the mod name but it's released on the minecraft forums and it a huge mod were u can auto mine with pipes
And there's oil
Anyway the pipes in that mod perform a glowing strobish action

thats buildcraft

... i included sleep... is that not right?

how would I do this the other way Eg if I put fuel in lets say a super furnace that it would activate some redstone