6

Long story short, I am mining a huge area, and was just putting all of my items in a chest. I turned around and saw this.

Screenshot

There are eight total creepers in the photo. (One is really hard to spot. See if you can spot them all!) Two total blocks were unlit, however the other one is not near where the creepers were. I have read about pack spawning, but could two packs spawn in the exact same block within seconds? What exactly happened here? (Note: I have not gone cave lighting)

  • (For those who were wondering, two creepers occupy the same block, and therefore, look like one creeper) – The Mattbat999 Feb 6 '18 at 23:20
  • Actually @TheMattbat999, that isn't it! I just now realized that the quality of the photo decreased when it was uploaded, so the last creeper is right behind an iron block. – Grant Garrison Feb 7 '18 at 2:30
  • I see it now @Grant... – The Mattbat999 Feb 7 '18 at 2:53
4

Yes.

A mob (usually) can't spawn in a block that's already occupied by another mob, but since pack spawning spreads the mobs a bit, two packs can spawn in the same origin block, if the mobs have different offset from it. I'm pretty sure this can even happen within one game tick (1/20 second), because there are multiple spawning attempts per tick.

The same can technically also happen with ore generation, but it's hard to see, because it looks the same as when the second ore vein gets generated one block to the side.

In your case, it doesn't necessarily mean that the pack spawning algorithm started in the same block, it could also have been just pretty close together.

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