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  1. Minecraft: Java Edition
  2. MC-159102

Ice and water make daylight height-dependent

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Details

    • Bug
    • Status: Open
    • Resolution: Unresolved
    • 1.14.4, 1.16.1, 20w27a, 1.16.2 Pre-release 3, 20w51a
    • None
    • None
    • Confirmed
    • (Unassigned)

    Description

      The bug

      Short:

      A water or ice block in the air makes the daylight it lets through decrease with every block in negative y-direction, which is normally NOT a feature of daylight.

      Long:

      While building an ice farm in a mountains biome, I moved the platform to a certain height. To make sure that the ground beneath the platform was not too dark, I decided to create the platform out of (white stained) glass. Since the Block of water and the ice block are (partially) transparent, I thought, the daylight would reach the ground with a light level of about 12 (Ice and water reduce the light level by 2 or 3). Actually the light level on the ground went down to 6 (distance of 9 blocks to the next not water filled glass block in horizontal direction). After some trial and error, I found out, that the daylight (normally not height dependent) was changed to a height dependent normal light of light level 12, which is decreased by 1, every block downwards.

      How to reproduce

      1. Set the time to daytime:
        /time set noon
      2. Run the following commands in an open area without moving:
        /fill ~-3 ~-3 ~-3 ~3 ~12 ~3 stone hollow
        /fill ~-2 ~12 ~-2 ~2 ~12 ~2 ice

        Skylight decreases with altitude after passing through the ice

      Attachments

        1. 2019-08-17_19.44.33.png
          2019-08-17_19.44.33.png
          1.38 MB
        2. 2019-08-17_19.44.49.png
          2019-08-17_19.44.49.png
          1.43 MB
        3. 2019-08-17_19.45.08.png
          2019-08-17_19.45.08.png
          2.59 MB
        4. 2019-08-17_19.45.28.png
          2019-08-17_19.45.28.png
          1.72 MB
        5. Skylight.png
          Skylight.png
          557 kB

        Activity

          People

            Unassigned Unassigned
            KhFlow Florian Tomaschek
            Votes:
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            Watchers:
            3 Start watching this issue

            Dates

              Created:
              Updated:
              CHK: