Meteorite (biome)

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BiomeBannerMeteor.png
This article is about the biome. For the ore, see Meteorite.

A Meteorite biome is a mini-biome formed when a meteor crashes in the world. This event always occurs off-screen, leaving a crater lined with Meteorite ore for players to find somewhere in the world. A meteor event can only be triggered once the player has defeated the Eater of Worlds or the Brain of Cthulhu for the first time (see the exact conditions below). Players are alerted of a meteor crash via a status message: "A meteorite has landed!"

Meteorite biomes spawn Meteor Heads, a unique enemy type, which fly toward the player and follow them as they move, passing through all blocks that they come across. The spawning of Meteor Heads cannot be prevented as long as the area is considered a Meteorite biome, even with several NPCs nearby. However, the Space layer can override the Meteorite biome, and Harpies will spawn instead. If the player is in a Meteorite biome but also near the Space border, both Harpies and Meteor Heads can spawn.

Once most of the Meteorite has been mined away (fewer than 75 blocks of Meteorite remaining; about 10% of an average Meteorite site), the area will no longer be considered a Meteorite biome and Meteor Heads stop spawning.

Contents

Characters
Unique Drops
Music

Conditions

First crash

A Meteorite crash site is guaranteed to spawn after the Eater of Worlds or Brain of Cthulhu is defeated for the first time.[1] If the boss is defeated between midnight and dawn (12:00 AM – 4:30 AM), then the meteor crashes immediately. Otherwise, it will crash at the next midnight (12:00 AM).

Subsequent crashes

Once the Eater of Worlds or Brain of Cthulhu has been defeated for the first time in the world, meteors start randomly crashing on their own. There is a 1/50 (2%) chance each midnight (12:00 AM) for a meteor to fall.

Additionally, subsequent defeats of the Eater of Worlds or Brain of Cthulhu have a 1/2 (50%) to spawn a Meteorite biome each time.[1]

  • Again, the crash site is generated immediately if the boss is defeated between midnight and dawn (and the 1/2 (50%) chance succeeds). Defeating the boss repeatedly during this time may therefore cause multiple meteor crashes in the same night.
  • Defeating the boss between dawn and midnight (4:30 AM – 12:00 AM) schedules a meteor crash for the following midnight (provided the 1/2 (50%) chance succeeds). Defeating the boss repeatedly during this time therefore increases the chance of a meteor falling at midnight, but still only one meteor can fall at midnight.
    • For example, defeating the boss once during the day has a 1/2 (50%) chance to schedule a meteor crash, whereas defeating it twice increases the chance to 3/4 (75%), defeating it three times increases the chance to 7/8 (87.5%), and so on.

Constraints

A meteor will not fall if there are already too many blocks of Meteorite placed above 0 ft. The limits are:[2]

  • Small worlds: 401 blocks
  • Medium worlds: 610 blocks
  • Large worlds: 801 blocks

There are also constraints on where a meteor can crash:[3]

  • An area that laterally spans the central 16% of the world (672 (small worlds) / 1024 (medium worlds) / 1344 (large worlds) tiles) is protected from falling meteors.
    • For example, in a small world the 336 tiles to the right and left of the world spawn point (approximately between 672' East and 672' West on the Compass) are protected.
  • A meteor will not crash within 35 tiles horizontally and vertically of any of the following:
  • It will not crash on-screen for any player.
  • It cannot crash within 50 tiles of any of the four true edges of the world.

If the entire world is covered by these conditions (e.g., because of lots of Chests), the meteor will not fall and the status message will not be displayed.

In searching for a valid location, the game will search a 30×30-tile region and look for 600 solid blocks within that region. Sunplate and Cloud Blocks count as −100 solid blocks; thus, Floating Islands are unlikely to be struck by a meteor. Liquid decrements the count too, so meteors are less likely to crash in the Jungle or Ocean. Thin structures such as sky bridges are not dense enough to allow a meteor impact. Meteors will never crash above 70% altitude (see Space § Notes), but can otherwise – given a wide enough, straight opening – crash at any height, down to The Underworld.

Notes

Ambience Meteor.gif
Meteor background sprite
  • The background will show an animated falling meteor shortly before the impact site is generated in the world. It is not an accurate representation of where the Meteorite crash site will actually be created in the world: The meteor may appear to fall to the right side of the world, but it might have landed on the left side instead.
    • The meteor will only be displayed if the Eater of Worlds or Brain of Cthulhu was defeated between dusk (7:30 PM) and 11:40 PM, or if the meteor is falling due to the random chance each night. It will always start falling in the background at 11:40 PM.[4]
    • Even if circumstances would prevent meteor landings (i.e., no new Meteorite biome would actually be generated), the background meteor will always appear when the conditions are fulfilled.

Tips

For tips on defending against Meteor Heads, see Meteor Head § Tips.
  • Proper equipment, such as a tool with high mining speed (the fastest pickaxe capable of mining Meteorite available pre-Hardmode is the Bone Pickaxe; reforged to Light for an even higher speed) and protection against the Burning debuff (e.g. with an Obsidian Skull) will greatly facilitate efficient mining of the Meteorite.
  • Since meteors cannot fall if there are too many Meteorite blocks placed above 0 ft in the world, it is possible to completely prevent meteor strikes by placing a sufficient number of Meteorite blocks anywhere above 0 ft.
  • There are certain areas in the world a player may wish to protect from meteor crashes, such as player-built structures, the Ocean, the entrances to the Underground Jungle, the Underground Desert, chasms, or Living Trees. An easy way to protect these areas is by placing down a Chest near those areas. The Chest will protect everything within 35 tiles horizontally and vertically. Alternatively, adding a few Cloud or Sunplate Blocks will also protect an area.
  • If a Meteorite crash site cannot be located on the surface, it might have crashed into a Living Tree or a chasm in The Corruption/Crimson.

Trivia

  • The music of Meteorite biomes is overridden by the theme music of The Corruption, The Crimson, Glowing Mushroom biomes, and Space when crashed there.
  • While a player, Ghost, and the death screen can block a meteor from spawning at a location if the landing spot is within sight, the spawning of the meteor can actually be seen using Golf Balls(Desktop, Console and Mobile versions) to move the camera.
  • Meteorites in a landing site will also be painted if the blocks the Meteorites replaced were painted.

Gallery

  • It is possible for a meteor to crash into a Living Tree.
    It is possible for a meteor to crash into a Living Tree.

History

  • Desktop 1.4.0.4:
    • Removed the condition that at least one Shadow Orb or Crimson Heart must have been smashed in the world in order for meteors to spawn randomly at midnight. The only condition remaining for this now is that the Eater of Worlds or Brain of Cthulhu has been defeated at least once in the world.
    • Fixed an issue where meteors would be unable to spawn if the entire top of the world was covered with platforms.
  • Desktop 1.4.0.2:
    • Meteors no longer fall until after the Eater of Worlds or Brain of Cthulhu has been defeated.
      • Defeating the boss for the first time now guarantees a meteor crash.
      • Smashing a Shadow Orb or Crimson Heart no longer has a stacking 1/2 (50%) chance of spawning a meteor the following midnight (or immediately, if smashed between midnight and dawn). Instead, this effect is now triggered by subsequent defeats of the Eater of Worlds or Brain of Cthulhu.

References

  1. ↑ 1.0 1.1 Information taken from the Desktop version Desktop 1.4.4.9 source code, method DoDeathEvents() in Terraria.NPC.cs.
  2. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method dropMeteor() in Terraria.WorldGen.cs.
  3. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, methods dropMeteor() in Terraria.WorldGen.cs and meteor() in Terraria.WorldGen.cs.
  4. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method HandleMeteorFall() in Terraria.Main.cs.
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