Make sure you are far away from the End island or they will just spawn there and not in your mob farm.
Also, I may be mistake, but by looking at your picture it seems like you are using water in order to push the endermen into your trap. This will not work though, because endermen hate water and will teleport away if they touch it. I highly recommend spawning an ender mite by throwing ender pearls, naming it with a nametag so it doesn't despawn, and using it as bait to get your endermen in the trap because ender mites aggro endermen.
@rkpkid1997: The water is probably to keep the endermen from having anywhere else to teleport to by covering everything within teleport range outside the spawner and kill zone.
Make sure you are far away from the End island or they will just spawn there and not in your mob farm.
Also, I may be mistake, but by looking at your picture it seems like you are using water in order to push the endermen into your trap. This will not work though, because endermen hate water and will teleport away if they touch it. I highly recommend spawning an ender mite by throwing ender pearls, naming it with a nametag so it doesn't despawn, and using it as bait to get your endermen in the trap because ender mites aggro endermen.
I'm using the endermite to attract the enderman. I'm 200 blocks away from the island.
I would check to make sure the endermite didn't die somehow. Also check the spawning platform to make sure the endermen are actually trying to get said endermite.
I would check to make sure the endermite didn't die somehow. Also check the spawning platform to make sure the endermen are actually trying to get said endermite.
Then even if any endermen spawn they will despawn immediately.
You have to be more than 24 blocks away or nothing will spawn.
If you are between 24 and 32 the endermen will keep on moving and so have the best chance of falling into the trap.
If you are between 32 and 128 the endermen will stop moving after a while and gradually despawn, though if they are being agroed they will probably make it to the trap before that happens.
There are certain activities that sets a "busy" flag on mobs. This flag prevents the game from doing stuff with the mob such as despawning them (this is not applicable to changing to peaceful mode, you can think of peaceful as a forced deletion). One example of this is witches being damaged by a magma-block floor. The damage tickrate of the magma block is just slow enough that witches are able to continuously drink health potions to avoid actually dying. Drinking a potion trips this flag, therefore the game cannot despawn witches on magma-block floors even though you left the area.
I dunno if "aggro" works the same way, but it sounds like it might.
Make sure you are far away from the End island or they will just spawn there and not in your mob farm.
Also, I may be mistake, but by looking at your picture it seems like you are using water in order to push the endermen into your trap. This will not work though, because endermen hate water and will teleport away if they touch it. I highly recommend spawning an ender mite by throwing ender pearls, naming it with a nametag so it doesn't despawn, and using it as bait to get your endermen in the trap because ender mites aggro endermen.
Far away = 128 blocks or more.
@rkpkid1997: The water is probably to keep the endermen from having anywhere else to teleport to by covering everything within teleport range outside the spawner and kill zone.
Just testing.
I'm using the endermite to attract the enderman. I'm 200 blocks away from the island.
I would check to make sure the endermite didn't die somehow. Also check the spawning platform to make sure the endermen are actually trying to get said endermite.
I checked, can I be far away from the island?
Make sure the endermen can actually see the endermite. If you put it too high, the endermen won't see it and therefore won't aggro.
Not 128 blocks away!
Then even if any endermen spawn they will despawn immediately.
You have to be more than 24 blocks away or nothing will spawn.
If you are between 24 and 32 the endermen will keep on moving and so have the best chance of falling into the trap.
If you are between 32 and 128 the endermen will stop moving after a while and gradually despawn, though if they are being agroed they will probably make it to the trap before that happens.
Just testing.
There are certain activities that sets a "busy" flag on mobs. This flag prevents the game from doing stuff with the mob such as despawning them (this is not applicable to changing to peaceful mode, you can think of peaceful as a forced deletion). One example of this is witches being damaged by a magma-block floor. The damage tickrate of the magma block is just slow enough that witches are able to continuously drink health potions to avoid actually dying. Drinking a potion trips this flag, therefore the game cannot despawn witches on magma-block floors even though you left the area.
I dunno if "aggro" works the same way, but it sounds like it might.