AffinitySMP

Choose one affinity and live with it. Minecraft Affinity SMP gives every player a permanent elemental identity with its own spawn location, powers, weaknesses, and active abilities.
Air players leap higher, survive huge falls, launch wind charges, and begin on sky islands. Fire players thrive in the Nether, heal from flames and lava, smelt ores by eating them, and suffer in water. Water players breathe underwater, move with Dolphin’s Grace, resist guardians, and dry out on land. Sand players dominate deserts, burrow through sand, ignore cactus, and slow down in water. Nature players farm faster, tame easier, camouflage with leaf armor, grapple with vines, and are ignored by zombies and creepers. Ender players teleport freely, enchant from inventory, heal from End crystals, and use Dimensional Switches, but survive with only half health.
Affinities cannot be freely changed. To choose again, craft a Totem of Affinity, die with it, and sacrifice your inventory, experience, and Ender Chest contents.

Affinity SMP Wiki Bullet List
Mod version: 0.9.3
Minecraft/Forge target: Minecraft 26.2, Forge loader 65+
Works as a server mod, but players also need the jar client-side for the custom UI.

On first join, players choose one affinity from the selection UI.
The arrows browse affinities.
Confirm locks in the selected affinity.
Players spawn where their chosen affinity is most useful.

If a player has a bed, respawn anchor, or compatible checkpoint, the mod respects it.
If no checkpoint exists, the player respawns at their affinity home biome or dimension.

Affinities cannot be freely swapped.
To switch affinities, craft a Totem of Affinity and die while holding it.
Switching clears inventory, XP, and Ender Chest contents.

Affinities

Air Affinity
Symbol: wind charge
Spawn: sky island
Boons: boosted jump, boosted sprint, permanent slow falling, no normal fall damage
Ability: crouch + empty-hand right click fires a wind charge
Weakness: drowns much faster

Fire Affinity
Symbol: blaze powder
Spawn: Nether
Boons: swims in lava, walks on magma, fire/lava heals, lava cancels fall damage, eats ores to smelt them
Ability: empty-hand right click casts fireballs
Weaknesses: water hurts badly, Overworld timer requires lava baths or Nether returns
Starter chest: ruined portal loot chest if enabled

Water Affinity
Symbol: water bucket
Spawn: ocean
Boons: water breathing, Dolphin’s Grace, guardians ignore you, mining fatigue clears
Ability: empty-hand right click fires a water/guardian pulse
Weaknesses: dries out on land, fire is extremely dangerous

Sand Affinity
Symbol: sand
Spawn: desert village
Boons: faster in deserts/badlands, cactus immunity, no fall damage when landing on sand
Ability: empty-hand right click burrows through sand
Weaknesses: water and rain slow you heavily

Nature Affinity
Symbol: leaves
Spawn: jungle
Boons: faster farming, better taming, heals in water, zombies and creepers ignore you
Abilities: vine grapple, crouch camouflage with leaf armor
Weakness: fire hurts more

Ender Affinity
Symbol: eye of ender
Spawn: Outer End Islands
Boons: free look teleport, inventory enchanting, End crystal healing, Dimensional Switch, Endermen ignore you
Weaknesses: half health, rain damage
Inventory enchanting costs 3 levels
Starter chest: End city treasure loot chest if enabled

Vampire: Twelve hearts, cave spawn, sunlight burns, lifesteal on mob damage, undead ignore you, and empty-hand crouch right click starts bat form flight. Wood hurts like diamond and holy water burns.

Recipes

Totem of Affinity
Recipe uses: leaves, water bucket, totem of undying, blaze powder, sand, ender eye, wind charge
Used to reset affinity selection after death
Consumed when used

Dimensional Switch
Recipe uses: end rod, ender pearl, shulker shell
Ender-only item/block
Creates a gateway between its End position and relative Overworld position

Chorus Flower to Warped Planks
Recipe: 1 chorus flower -> 4 warped planks
Added so Ender players can escape/progress from the End

Config Options
respectRespawnCheckpoints
Default: true
Beds, respawn anchors, and compatible checkpoints are respected.

affinityFallbackRespawn
Default: true
Players without checkpoints respawn at their affinity home.

fireStarterChest
Default: true
Adds a ruined portal loot chest near Fire’s Nether spawn.

enderStarterChest
Default: true
Adds an End city treasure chest near Ender’s spawn.

Notes
Air, Sand, Water, and Nature do not get special starter chests.
Fire and Ender get starter chests because their starts are much harsher.
The mod should be installed on both the server and every player client.
Vanilla clients cannot join with the mod features.