It is very difficult to understand

It is very difficult to understand what you are saying, but I think I got it.
Listen for a PlayerInteractEvent. If they are clicking on the fence gate, get the BlockState and get its MaterialData. Cast the MaterialData to Gate, and do setOpen(true). Start a BukkitTask that runs every tick, which checks if the player is no longer in that block, and if so, sets it back to closed and cancels itself.

Результаты (английский) 1:

It is very difficult to understand what you are saying, but I think I got it.Listen for a PlayerInteractEvent. If they are clicking on the fence gate, get the BlockState and get its MaterialData. Cast the MaterialData to Gate, and do setOpen (true). Start a BukkitTask that runs every tick, which checks if the player is no longer in that block, and if so, sets it back to the closed and cancels itself.

Результаты (английский) 3:

it is very difficult to understand what you are saying, but i think i got it.listen for a PlayerInteractEvent. if they are clicking on the fence gate, get the BlockState and get its MaterialData. cast the MaterialData to gate, and do setOpen (true). start a BukkitTask that runs every tick, which checks if the player is no longer in that block, and if so, sets it to new and cancels itself.