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  1. Minecraft: Java Edition
  2. MC-185208

Dropper Activation Not Deterministic

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • 1.15.2, 1.16.2 Pre-release 3
    • Community Consensus
    • Redstone

      Note: I've searched for this exact issue but have not found a ticket that describes what I'm seeing.

      Unexpected Behavior:

      When powering the second dropper in a line of droppers facing upward, with the bottom dropper containing one item, the number of droppers that item will move varies depending on the direction from which the Redstone activation came, as well as the world quadrant in which the dropper tower exists.

      Example:

      When powering the second dropper from the bottom of four droppers in a tower with

      • all droppers facing upward and
      • in the north-west quadrant of the world (quadrant containing (-1, -1)) and
      • with the bottom dropper containing one item and
      • Redstone signal coming from the south

      the item will move into the fourth dropper from the bottom (the top dropper).

      While, when powering the second dropper from the bottom of four droppers in a tower with

      • all droppers facing upward and
      • in the north-west quadrant of the world (quadrant containing (-1, -1)) and
      • with the bottom dropper containing one item and
      • Redstone signal coming from the west

      the item will move into the third dropper from the bottom.

      Table of Tests:

      This table shows the nth dropper from the bottom to which the item will move after activation.

      Redstone
      Direction
      (coming from)
      World
      Quadrant
      Item
      Location
      (dropper n)
      North SE (0, 0) 2
      West SE (0, 0) 2
      South SE (0, 0) 3
      East SE (0, 0) 3
      North NE (0, -1) 3
      West NE (0, -1) 3
      South NE (0, -1) 4
      East NE (0, -1) 4
      North SW (-1, 0) 2
      West SW (-1, 0) 2
      South SW (-1, 0) 3
      East SW (-1, 0) 3
      North NW (-1, -1) 3
      West NW (-1, -1) 3
      South NW (-1, -1) 4
      East NW (-1, -1) 4

      Attachments:

      I have attached a zip file of the world I used to test this behavior (Dropper_Test.zip) and a few screenshots of that world.

       

        1. 2020-05-22_14.51.29.png
          2020-05-22_14.51.29.png
          395 kB
        2. 2020-05-22_14.51.32.png
          2020-05-22_14.51.32.png
          291 kB
        3. 2020-05-22_14.51.34.png
          2020-05-22_14.51.34.png
          221 kB
        4. 2020-05-22_14.51.36.png
          2020-05-22_14.51.36.png
          189 kB
        5. 2020-05-22_14.52.04.png
          2020-05-22_14.52.04.png
          1.46 MB
        6. dropper_directional.nbt
          0.7 kB
        7. Dropper_Test_2.zip
          1.61 MB
        8. Dropper_Test.zip
          1.63 MB

            Unassigned Unassigned
            thoughtbaker Ryland Atkins
            Votes:
            5 Vote for this issue
            Watchers:
            7 Start watching this issue

              Created:
              Updated:
              CHK: