Lumina World

Lumina

Minecraft 1.21.1 · Fabric · works with Sodium, Lithium and Iris

Minecraft's world is built on a grid of whole blocks, and your body is a row of ten hearts. Lumina takes both apart.

A block space can hold two materials at once. A quarter of a block can stand upright or lie on its side. Sand can settle inside a slab, a flower can live in one, snow can cover a meadow without destroying it. And instead of one health bar you have eight body zones that are hurt, splinted and scarred one at a time.

Every one of these behaviours can be switched off with a game rule, mid-game, without starting over. Build with the blocks and leave the survival systems alone, or the other way round.

Blocks	818
Items	99
Fluids	6
Status effects	13
Enchantments	2
Recipes	1004
Game rules	13
Creative tabs	4

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Part 1 — Building

Host slabs — 282 of them

Vanilla has slabs for stone, planks and a handful of others. Lumina has 282 more — one for almost every full block that never got one. Logs, leaves, glass, terracotta, concrete, ore, copper in every stage of weathering, hay, mushroom blocks, glazed terracotta, wool, soul soil, mud.

They are not just models. Each one behaves like the block it was cut from:

• a magma slab burns your feet, an ice slab is slippery
• an ore slab pays out its ore and its experience
• glass shatters unless you use Silk Touch
• leaves take their colour from the biome and are see-through on Fancy graphics
• copper weathers over time and can be waxed with a honeycomb — and scraped back with an axe
• a log slab can be stripped with an axe, including while it stands on its side
• footstep sounds, particles and map colours come from the host block, not from a default

They have their own creative tab, Lumina Slabs, sorted by material.

Two materials in one block space

Put a slab where a different slab already sits and the two share the space. Stone below, oak above, in one block that mines as two: break the top half and the bottom stays, each dropping the right thing. Aim at the half you want — the outline, the cracks and the break particles all follow the piece you are actually pointing at, not the whole block.

Stand a slab on its side and it fills half the block vertically instead, leaving the other half free for something else.

Corner blocks — 389, on any axis

A quarter of a block, for nearly every full block in the game. Fill one corner or all four, mix materials inside one block space, and set them upright or lying down — a quarter can run along any of the three axes, and the spot you click decides which, exactly the way slabs work.

Diagonal walls, rounded towers, tapered edges and sloped roofs without the staircase look the grid usually forces on you. Their own creative tab, Lumina Corners, in the same order as the slab tab, so the same material sits in the same place in both.

Loose material in layers

Vanilla has exactly one material that lies in thin sheets: snow. Lumina adds sand, red sand, gravel and clay, one to eight layers deep, placed and stacked the way snow is.

Material inside other blocks

Any loose material — plus carpet — can lie inside another block, in whatever room that block leaves empty. Sand settles into an upright slab. A carpet lies in a corner block. Gravel rests in a bell, a brewing stand, a decorated pot.

27 kinds of host were taught to hold it: doors, fences, fence gates, walls, stairs, slabs, anvils, cauldrons (empty, water, lava, powder snow and the mod's own fluid cauldrons), chests, ender chests, bells, brewing stands, grindstones, stonecutters, flower pots, decorated pots, pressure plates, buttons, trapdoors and panes.

The host keeps working exactly as before — the chest still opens, the bell still rings, the pressure plate still triggers — and the footstep sound follows the material you are standing on, not the block underneath it. Raised floors and sunken doorways stop being a compromise.

Plants inside blocks

A flower or a sapling can live inside a host block instead of needing a block of its own. It is drawn where it belongs, can be looked at and hit on its own, and survives what happens to the block around it.

Snow over flowers

Snowfall settles over flowers rather than destroying them. It holds the plant underneath and gives it back when it melts. A meadow after a snowfall is still a meadow.

Light glass — 16 colours

Transparent, gives off light, does not block the view, and tints what falls through it. Lighting for a build that wants no torches breaking its lines. It works as slabs and corners too, in any orientation, and keeps glowing even when it shares its block space with something else.

An arrow shatters it — which also makes it something you can deliberately shoot through.

Wet ground

Ground next to water darkens, and it does so gradually: the darkening creeps outwards from the water over about ten seconds, with a per-block stagger so the front is not a clean expanding circle. Drying creeps back the same way. Water that a player places gets its own random pattern, so refilling the same hole never looks quite the same twice.

Placement preview

A see-through copy of the block that would appear if you clicked right now, drawn in place before you commit. Slabs, corners, stairs, logs and trapdoors all land differently depending on exactly where the crosshair sits, and none of that used to show. The preview runs the real placement logic, so it always agrees with what actually happens. Purely visual — nothing is placed, nothing collides.

The mining core

A quarry that refills itself and never leaves a hole. The core claims a cube 16 blocks in every direction, and inside it mining works in stages instead of removing anything.

Break an iron ore and you get the raw iron as normal — but the ore becomes cobbled stone rather than air. Break that and you get the stone, and the space becomes bedrock: spent, for now. Two minutes later every stage reverts. The same wall can be worked again and again, and the mine never turns into the usual swiss cheese.

Cobbled stone variants

Cobbled andesite, cobbled diorite and cobbled granite — they behave like stone and cobblestone, drop from their base block, give the base block back under Silk Touch, and slot into the mining core's chain (andesite → cobbled_andesite → bedrock).

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Part 2 — The body

Eight zones instead of ten hearts

Head, torso, two arms, two legs, two feet — each with its own health, each shown on its own gauge. Press the Open Body key for the full view.

Where a blow lands decides what it costs, and armour counts only where it actually sits: a bare foot takes far more of a hit than a plated chest. Head or torso at zero means death; the others do not kill you, they cost you.

What a hurt zone actually does:

Zone	While it is hurt
Head	Your view narrows and your sight distance shortens
Torso	Everything is harder; at zero, you die
Arms	Less reach, slower mining, weaker blows
Legs	You move slower
Feet	You move slower again

Nothing drops to zero effectiveness — there is always a floor, so a bad fight is a setback rather than a lock-out.

Scars

A zone that has been ruined and mended all the way back scars. A scarred zone is tougher against blows afterwards and slower to heal. It is a permanent record of what has already happened to you, and it stacks up to a limit.

Natural healing has a ceiling

Left alone, the body mends only to half — and never touches a zone that has been ruined. That is what makes treatment worth carrying rather than optional.

Going down, and the fate dice

Instead of dying you go down. The screen changes, you are out of the fight but not gone, and two dice lie in front of you: a d10 and a d100. You throw them by hand.

50 or higher is a success. Three successes put you back on your feet. Three failures do not.

Dice are a finite stock, not a per-death allowance. Every collapse spends one, and with none left the next killing blow is simply death. Aurium hearts are how you get more.

Treatment

Four items, and they are deliberately not four sizes of the same thing:

Item	What it is for
Bandage	Puts health back into a zone
Splint	Makes a ruined limb work again — the only thing that does
Salve	A stronger heal, slower to apply
Aurium elixir	The strongest, brewed in an elixir bottle

A player carrying both a bandage and a splint has to know which one they need.

Crystal hearts

The only route to permanently more health, and each belongs to one part of the body:

Heart	Strengthens
Noctis heart	Head
Gaia heart	Torso
Solstral heart	Both arms
Zephyrium heart	Both legs
Glacium heart	Both feet
Aurium heart	Grants an extra fate die

Each zone accepts a limited number, so hearts are a decision about where to be strong rather than a number to grind.

Two enchantments that fit the zones

Neither takes damage off — vanilla's Protection already does that job well. These two buy something vanilla cannot sell:

• Warding thickens the piece it sits on. The zones that piece covers take a smaller share of every hit, and the rest of the body takes the difference. Somebody who keeps losing a foot puts it on their boots.
• Evenness gives that choice up in exchange for never being caught out. It pulls the whole spread back towards flat: no zone is a weak point, and none is well covered either.

Thirst

A fourth need beside hunger, with its own gauge. It drains faster the harder you work — Lumina takes its cut of the same exhaustion vanilla already counts for sprinting, mining, swinging, jumping and swimming, so any mod that adds a strenuous action costs you water for free.

Heat above 25 °C drains it faster still, heavy armour adds a third again, and being submerged slows it down. Run low and you slow down; run out and it hurts.

Drinking any of the mod's own fluids helps, and what each one gives is decided by what the item is rather than by a list of ids — so a fluid added later is drinkable the day it exists.

Temperature

Felt temperature, not biome temperature. It follows the biome, the time of day, how wet you are and what you are wearing, shown as a coloured strip. Both ends are dangerous, and both are answered by clothing.

Smell

Smell builds up over time and draws attention you did not want. Soap is the answer — made from tallow and ash, both of which you can render and burn yourself.

Clothing

Four clothing slots of their own, separate from armour, in three materials:

Material	For	Pieces
Linen	Heat	Cap, shirt, trousers, shoes
Wool	Temperate	Hat, sweater, leggings, socks
Fur	Cold	Hood, coat, trousers, boots

It shows on the player model and sits geometrically under armour — a breastplate over a fur coat looks like someone wearing armour over a coat, which is the right way round.

Hit zones on mobs

The zone system runs in both directions. Where you strike a mob counts, projectiles included — a thrown stone that catches a zombie in the head is worth half again as much.

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Part 3 — Tools you have to earn

The tool requirement

Almost nothing can be broken bare-handed. And hitting a genuinely hard block hurts the arm you swung with — but only hard blocks: digging at soil with your hands gets you nowhere without costing you knuckles, and neither does thumping a bale of wool. What hurts is listed explicitly, so a block from another mod is harmless by default rather than punishing.

The way out

Four things you can get with nothing at all:

• Bark — stripped from logs with your hands, in all ten wood types. How much you get depends on how the log sits: a whole log pays four, one standing on end pays three, one lying down pays two.
• Plant fibre — pulled from grass
• Loose stone — knocked out of soil, and throwable: one heart of damage, one stone gone. Enough to finish something already hurt, never enough to open a fight. It reads as a projectile, so the mob hit zones apply to it.
• Crude hand axe — the first real tool, and the door out of the whole problem

The fire starter

Two sticks and a piece of flint. Hold it against wood and keep working — smoke starts rising after a third of a second and the fire catches after two seconds. It only lights what would genuinely take a flame, and lighting a campfire is exactly what it is for. The item's tooltip explains both.

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Part 4 — Time, fire and the world

The world clock

The day runs slower — and how much slower depends on which biome the group is standing in. A desert day is not a tundra day.

Since the sun belongs to the world rather than to a player, the majority decides, under four rules that keep the answer steady: only overworld players count, spectators do not, a tie leaves the pace where it is, and a new winner has to win three samples in a row before it takes. Without that last rule, walking along the edge of a desert would flip the length of the day every few steps.

Bed rest instead of skipping the night

Sleeping no longer teleports the clock to morning. It runs the night through fast, while everyone is in bed — you watch it pass instead of blinking through it. Whether the group counts as resting is read from vanilla's own playersSleepingPercentage, so a server that set it to 50 has already said "half the party is enough" and nothing here has to know that.

Phantoms still work. They arrive after three days awake, measured in world time rather than ticks, so "three days" means three days at any clock speed. Weather runs on the same slower clock.

Campfires, both ways

A lit campfire heals whoever sits by it. A lit campfire also sets alight whoever walks through it. The same fire, two consequences.

Beating out the flames

On fire? Tap sneak, repeatedly and quickly. Each press smothers a slice of the remaining burn time, and enough of them inside the window puts it out with the hiss a campfire makes. Pause too long and the run starts over. The counting happens on the server, so a client sending the packet in a loop gets no further than a player doing it by hand.

Glass shatters

An arrow or a thrown stone breaks glass, through one shared rule — so a window is either breakable by both or by neither, and one game rule stops every way of doing it.

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Part 5 — Crystals, fluids and metals

Six families

Each family has a shard, a shard cluster, a stone, a crystalstone, a crystal block, a growing bud in three sizes, a cluster, a molten form, a stamped form, a fluid and a heart.

Family	Character	Heart strengthens
Noctis	Night and sight. Darkens what it touches.	Head
Gaia	Earth and weight. Makes what grows nearby ripen.	Torso
Solstral	Sun and ember. Warms, burns, makes ore glow.	Both arms
Zephyrium	Wind and stride. Carries further than a jump reaches.	Both legs
Glacium	Ice and cold. Freezes what stands still too long.	Both feet
Aurium	Gold and luck.	Grants an extra fate die

Growing crystals

Budding blocks push out clusters over time, the way amethyst does — small bud, medium bud, large bud, cluster. But a full-grown cluster hurts whatever walks into it, so harvesting becomes a question of timing: early and safe, or late and worth more.

Fluids that answer differently depending on how you meet them

Every family has a fluid, and every fluid does two different things. Standing in it gives one effect; drinking a bottle of it gives another. They never overlap.

Fluid	Standing in it	Drinking it
Gaia	Growth Aura — plants nearby ripen faster	Life Bloom — heals steadily
Aurium	Prospector's Touch — ore shows through stone	Golden Rain — blocks give up more
Glacium	Frost Aura — chills everything around you	Ice Prison — the cold closes in
Noctis	Corrupt Touch — spoils what you handle	Voidmark — a mark the dark can follow
Solstral	Ember Aura — heat that keeps the cold off	Blazeblood — fire in the blood
Zephyrium	Windstep — carries you further than a stride	Storm Pulse — pushes back what comes close

Not every drink is a gift. Ice Prison and Voidmark are things that happen to you. Drinking from a crystal spring is a decision with two possible answers, and the fluid does not say which in advance.

Prospector's Touch is worth singling out: while it lasts, ore is outlined in gold through solid stone, and the stone in between goes transparent.

Each fluid comes with a bottle, a bucket and a cauldron of its own, and they can be fluidlogged into blocks — with compatibility layers for Sodium and Lithium so the rendering and the flow simulation both still work.

Metals

Seven of them — crytherium, emberium, irythium, oblivium, spectronis, toxenium, verdanite — each with a raw form, an ingot and a block, and several with slabs.

Pieces, clumps and bags

Amethyst, diamond, emerald, gold and silver each come in pieces and clumps, with a bag to gather the pieces in. Small change for gems.

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Part 6 — Commands

Everything the mod can be told hangs off one name, so pressing tab after it lists the lot. All of it requires permission level 2 (operator).

/luminamod body

Command	What it does
/luminamod body	Shows your full body state: every zone, scars, bonus hearts, mending rate
/luminamod body set <zone> <health>	Sets one zone to an exact health value
/luminamod body damage <zone> <amount>	Damages one zone
/luminamod body heal	Restores the whole body
/luminamod body heal <zone> <amount>	Heals one zone
/luminamod body base <zone> <hearts>	Sets a zone's base health
/luminamod body bonus <zone> <hearts>	Sets the bonus hearts a zone has earned from crystal hearts
/luminamod body scars <zone> <count>	Sets a zone's scar count
/luminamod body reset	Back to defaults — health, scars, bonuses, all of it
/luminamod body thirst <value>	Sets thirst (0–20)
/luminamod body stink <value>	Sets the smell level
/luminamod body temperature <value>	Sets felt temperature

Zones are head, torso, arms, legs and feet.

/luminamod fate

Command	What it does
/luminamod fate	How many fate dice you have left
/luminamod fate get <players>	How many they have
/luminamod fate set <players> <count>	Sets their stock to exactly that
/luminamod fate give <players> <count>	Adds that many on top

/luminamod time

Command	What it does
/luminamod time	Reports the current speed and whether the clock is held
/luminamod time pause	Holds time where it is
/luminamod time resume	Lets it run again
/luminamod time setspeed <factor>	Fixes the day length at that factor
/luminamod time setspeed auto	Hands the pace back to the biome

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Part 7 — Everything can be switched off

Thirteen game rules, changeable while playing and saved with the world. All default to on.

Game rule	Turns off
luminaBodySystem	The eight zones — back to one health bar
luminaSurvivalNeeds	Thirst, temperature and smell
luminaClothing	The four clothing slots
luminaFateDice	Going down — death is death again
luminaTreatment	Bandages, splints, salves and elixirs
luminaMobHitZones	Hit zones on mobs
luminaToolRules	The tool requirement and bare-hand damage
luminaCampfireHealing	Healing beside a campfire
luminaCampfireIgnites	Campfires setting you alight
luminaSelfExtinguish	Beating flames out with sneak
luminaGlassBreaks	Arrows and stones breaking glass
luminaBedRest	The fast night — sleeping skips again
luminaTimeFlow	The world clock — a day is twenty minutes again

Set them the ordinary way:

/gamerule luminaBodySystem false

Want the building half without the survival half? Turn the body system off and keep every block. Want the survival half without a slower sun? Turn that one rule off. Nothing is all-or-nothing.

Blocks, items and fluids are deliberately not switchable: a registry entry that disappears takes the world with it.

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Where the mod stands

Fully playable in survival: every block, slab and corner, layers, material and plants inside blocks, light glass, wet ground, the placement preview, bark, plant fibre, loose stones, stone tools, the fire starter, clothing, treatment, soap, the world clock, campfires, and every part of the body and survival systems.

Creative only for now: the crystals, their fluids, the seven metals and the mining core have no world generation and no recipe yet. Everything about them works once placed — buds grow, clusters hurt, fluids apply their effects, hearts grant their health — but the first one has to come from the creative inventory.

That half is what I am working on next.

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Lumina is my own world, and this is the mod I write for it.