minecraft-java-edition
I fell in the lava accidentally, placed a bucket of water on the side of the portal and the lava turned into obsidian. Then I broke the spawner, placed the remaining eyes of ender, but the portal did not activate. I tried refilling the pool with lava, but no luck.
Is this a bug, or we did something wrong? Here is a screenshot:
Ahh, I know what happened. The lava has a new sound effect (it has been in there for a bit but it is overall somewhat new if you have not been playing for a bit).
Most people mistake it -exactly- for what you did, the sound of a slime hopping around as opposed to the sound of the lava bubbling.
As far as sound transmission goes, obsidian is the same as any other block and does not hinder sound (Sound only falls off based on distance to its source). But to answer the question of how did you end up at lava while tracking a slime, you were actually tracking the lava bubbling SFX.
The most resource efficient way I can come up with to power a horizontal line of droppers is this
with the redstone line on the left being connected to a clock. This works because the repeaters strongly power the dropper they are pointing into causing the droppers to the left and right to be indirectly powered.
The vertical line of droppers is powered as described in this Youtube video, with a comparator being used to send a (inverted by a redstone torch) signal to a vertical stack of redstone torches powering repeaters pointing into every 2nd vertical dropper.
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With regards to the specific situation you are in the most resource efficient way to get the mobs from the exit of the spawner to the 'home' area would be to bring them up high enough using a mob elevator (a 1x1 tube filled with alternating water blocks and signs will cause the mobs to swim themselves up to the top) to a point where they can be dropped down the required number of blocks.
The only pitfall with this type of system is ensuring that the mobs fall a consistent distance everytime. All that is required to do this is to ensure that the water stream at the top of the elevator is set up like this
XXXXXXXXXX
X X
X~~~~~S X
XSXXXXX X
(where ~ = water and S is a sign)
So that mobs get pushed into the drop shaft by other mobs pushing against them instead of directly by a water stream.
Best Answer
This does appear to be a bug, or else a very strange feature. I found that the only way to fix it was to use creative or commands to break and replace an end portal frame, and put the eye in anew, or else simply find another stronghold.