u/Nalle-poijjaat

I am trying to make fire vents that kill you if you touch the fire. I am using this command

execute as @e[tag=Vent] at @s run kill @a[dx=4,dz=0.1]

If you even slightly touch the block that goes along the x axis in front of the vent you die immediately. I would like to make the area smaller but I don't know how. If you also have any ideas on how to make the command work omnidirectionally based on which way the entity with the "Vent" tag is looking that would be very nice.

How do I detect when a player is riding a minecart?

I found 1 old post discussing this but it didn't work so I think it is outdated.

I tried killing the item frame but it deleted the whole item. I need some way for the player to get the item back without having to left click it. Any ideas?

I can detect when a player starts using a spyglass, but how do I detect when the player stops using it? The current method I am using for detection is giving the player a score on spyglass usage, but that only count when the player starts using the spyglass, but doesn't track if the player keeps looking through the spyglass or when the player stops.

I tried making a bigass black concrete item display but I can see the differences in texture, I tried to make a black map but it turned out just really dark gray. How can I make a pitch black void?

I want an AOE thing that has a variable range. How do I check if a player is as close to that object as it's range?