User:BabylonAS/Nether Reactor

Nether Reactor is a manufactured structure.

Creation
To create a Nether Reactor, place cobblestone in a plus shape and blocks of gold in corners. Then place a Nether Reactor Core on top of the center block, and place cobblestone on top of blocks of gold, then place a plus shape of cobblestone centered on top of the core. The air blocks in the structure are not optional.

Behavior
When the reactor is correctly built and the core is activated (tap on it), a client message saying "Active!" will appear, and a massive structure of netherrack (35x17x17) with multiple floors unofficially named a "Nether Spire" will generate. The spire doesn't mind about blocks where it generates and thus it can break even bedrock, but not barriers generating as part of world border (if any). It always generates with the same orientation. After activation, it eventually turns the reactor itself, excluding the core, into glowing obsidian. While active, breaking the blocks other than the core doesn't affect the process. In addition, it will start spawning various items and blocks.

After it burns out, the massive netherrack structure with multiple floors will have many holes in its walls. The bottom floor is hollow (all blocks inside other than the reactor are replaced with air), and the upper floors retain the blocks that were already there (air for an above-ground spire, dirt/stone/etc. for an underground spire). The core is still there, and is reusable. It is found in a 3x3x3 obsidian box where the reactor was constructed.

The Nether Reactor only lasts around 45 seconds. During the 45 seconds the Reactor is active, it is easy to escape the room, as it is all Netherrack. Once about 5,10, or 15 seconds have passed, the time sets to night time, so left over items in the room can despawn once the Nether Reactor stops.

If the reactor is incorrectly built, activating it outputs a message "Not the correct pattern!" instead.

Conditions

 * All players must be within the spire's area.
 * Must be built on Survival mode (this is intended ).
 * If the reactor is to be activated above water, it must be built at least three blocks above water.
 * The reactor must be built low enough for the spire to fully generate, as blocks cannot be created above cloud level.
 * The player must not be standing on a block below the last layer of the reactor.

Trivia

 * The structure created by the Reactor, the Nether Spire is 17x17 blocks at it's widest (bottom) and is 35 blocks high (2 blocks low and 33 blocks high).
 * The reactor's structure was originally iron and gold blocks rather than cobblestone and gold, but this was changed due to its cost and the fact that the reactor turns everything into obsidian except the core.
 * The player can quickly mine some or all of the materials out of the reactor after activation and it will still function.
 * If the player constructs the reactor near a world edge (if any) and activate it, they will see it turn night.
 * The spire always generates with the same orientation.
 * If the player builds a reactor around the burnt out core, the spire will generate, but no items or Zombie Pigmen will spawn, the cobblestone and gold blocks do not turn into glowing obsidian, and the core remains in its activated state unless mined, making a netherack farm.
 * The ONLY block the nether reactor can't destroy is the "invisible bedrock" on the world edge, mainly because it breaks the netherrack (obsidian 0.5.0) before it spawns.
 * However, if you inventory edit it into your inventory and place, it will consume it.
 * Take caution with where you put the reactor, and definitely don't start it inside your house.
 * If a Nether Reactor is manually deactivated, nighttime will be eternal, unless one goes to sleep, but daytime would only last about 20 seconds, and quickly fade back to nighttime. This would also cause hostile mobs to stop spawning (but already spawned hostile mobs will remain). This can be easily fixed by ending the server and starting up again.
 * If you activate a Nether Reactor close enough to the bottom layer of the overworld, it can replace the bedrock with netherrack, giving access to the void in survival mode. If you do this it will say all players need to be near the reactor, even if you are single player mode. A fix for this is to activate it from one block higher.