Minecraft Forums

Quote from TheWesson»

You make them spawn by having a large area which is solid on its upper surface (solid blocks, upper half slabs, etc), which is dark (darker the better), and which has 2 air blocks or more above this dark surface, and have a player standing 24+ blocks away from this surface, and making sure that [almost] all other surfaces in range are unsuitable for spawning (by being 128 blocks above the ocean floor, for example, or by placing many torches.)

All the ranges in the image are spheres. So X,Y, and Z all count. (Straight line distance.)

Here is the boiled down spawning algorithm:
Every tick (1/20 of a second), check hostile mob count within range of any player.
If this count is below the cap (79 for one player) then commence a spawn cycle.
In the spawn cycle, attempt to spawn one pack in each chunk near the player (15x15 chunks.)
A pack spawn attempt chooses a random X,Y,Z in the chunk.
If this location is suitable (dark, air above solid surface, etc) then make a number of attempts to spawn the pack (4 max) near that location on the same Y level.

Mobs further than 128 straight line distance from the player are despawned then or maybe in the next tick.

Once you have the basics taken care of (dark solid surface, player at range 24+) you will find the main thing holding your mob production back is the hostile mob cap. You can get some idea of the hostile mob count by checking 'E' in the F3 debug view, although that shows the count of all entities in the world, not just hostile mobs.

Quote from TheWesson»

Yep and here are the ranges. I must add: at 32-128 blocks range, mobs stop moving soon and despawn in about a minute.



Slimes don't stop moving even if they are more than 32 blocks away though.

Quote from TheWesson»

Here is a very simple passive mob spawner.

Player should stand 24+ blocks below the hole in the middle if you want mobs to die from the fall.

The most important non-obvious detail is that you should be at least 128 blocks from other dark spaces where mobs can spawn.

Quote from ironsloth1993»

Position villagers on one side to filter out the zombies. Have some kind of holding system to restrict their movement. The zombies will walk towards the villagers, into the trap.

In the center, place cats so that creepers that spawn will only go through one area.

Make the entire spawn area 2 blocks high so Enderman can't interfere.

Once you have these other mobs excluded, there should be no problem. Make a water system that pushes skeletons into your collection area.

The only mob I don't know how to exclude is the witch. They don't have any particular weakness or habit. Both are ranged mobs. Perhaps you could have some kind of sunlit area the skeletons would want to flee. After that, have an iron golem take out the remaining witches.

There you have it! A fully automated and filtered mob farm. If anyone can elaborate on this further, let me know. I would try this out. I am a trapper after all!

Quote from Kurty_squirty»

Or kill 1 skeleton, Get infinity 1... Sorted.

Quote from Hashiba»

Pretty much any of the usual hostile mob farms still work in 1.8

Here is a sample of what you can do:

Etho (Very easy to build):



Monkeyfarm (Fancier):



You are also going to want to brush up on how mob spawning works in general. Refer to the wiki entry: http://minecraft.gamepedia.com/Spawn#Mob_Spawning

Quote from Supergoose

here ya go:D
http://www.mediafire.../tntcreeper.png

Quote from NintendoHeart

Just to let everybody know, I cannot make HD skins such as the TNT head and the Pyrokar skin because it requires hours and hours of work to complete. I am sorry for this inconvenience