Hi I have been making black ops 2 maps on minecraft recently and while making nuketown 2025 I realized that in black ops 2 there are no animals moving in the map (Obviously) but animals naturally spawn on grass in minecraft (also by animals I mean farm animals not creepers zombies Etc.) so is there any way to keep animals from spawning on grass/in the whole world?
Are you building this on a normal world or on a superflat one? If on superflat, you'll have to hide an animal farm in an out of way place somewhere in the map itself. If on a normal world, you'll have the room to make an underground animal farm near where you and your players will be spawning into the world and fill it animals to the animal limit. Your pens in that farm must be less than 20 x 20 so they won't despawn; and you may have to go around the map a few times and kill of any animals that you find outside your animal pens in order to actually get to the world maximum. Also, if you spawn into your world too far away from your animal farm, the game seems to forget that you have reached the maximum limit and will spawn animals over the limit. If you spawn into your world near your animals pens so that chunk is loaded right away, it will prevent any additional animals from spawning elsewhere in the world.
NOTE: I am assuming you're doing this in creative mode, so you can use spawn eggs to spawn the animals to the limit. If you're capturing them, then the first thing you'll need to do when you place them in a pen is feed them wheat to put them into love mode (regardless of whether or not you have a mate to breed them to right then). If you don't do this, they will be inclined to despawn when you leave the area to bring back more animals.
Another option is to use green wool instead of grass for your maps. Or you could build the nuketown map in a desert or ocean biome. If you build it in a desert or ocean biome animals will not spawn there even if you have grass.
2.) Lead/spawn as many animals as you can in a hole far from the map*.
*Chickens have their own mob cap.
Stay fluffy~
NOTE: I am assuming you're doing this in creative mode, so you can use spawn eggs to spawn the animals to the limit. If you're capturing them, then the first thing you'll need to do when you place them in a pen is feed them wheat to put them into love mode (regardless of whether or not you have a mate to breed them to right then). If you don't do this, they will be inclined to despawn when you leave the area to bring back more animals.