The height of the room is two blocks, room size is 18x18, and the trench is 2x2, forming a cross with a pit in the center and water sweeping mobs directly into the pit. My son and I have created several mob-spawners with completely water-covered floors and trenches to sweep them into a shaft which kills them on the fall. I have reviewed the current version of the Monster Spawner page's Spawning Behavior section at Minecraft Wikiand it appears to have its facts correct it covers what I have mentioned here and more. It may appear that mobs are spawning in water since they immediately fall in, but if you were to completely flood the room no air blocks anywhere in the volume, only water blocksno mobs would spawn. Mobs can't spawn in water, even from Monster Spawners! The special rule of spawners is that they can spawn mobs in midair their spawns still require appropriate lack of lighting and an empty space, but they do not require an opaque block underneath like normal monster spawns do. I have created a skeleton trap with completely water covered floor to sweep the skeletons down into a pit to drown, as well as sweeping the items out to me.

A Mob Spawner can definitely still spawn with a room covered in water. The spider spawned in the water and climbed up to the ceiling. Here's a flooded dungeonand here's the same dungeon after I turned the difficulty to Easy and removed the torch. Apparently the random block in the 9x9x9 cube can be air. Setup cemu xbox one controllerĪ dungeon with a completely flooded floor is not safe. The rules for 'normal' spawns do not seem to apply fully to Mob Spawners. So is a block with water flowing over it valid? I'm asking both from the perspective of neutralizing a dungeon making it safe and from designing a dungeon trap a floor with water flowing over it would direct mobs to the trap, but would it also prevent them from spawning in the first place. It tries 4 times to place the mob at a random position in an 9 x 9 x 9 area, and gives up on placing that mob if it cannot find a valid position after the 4 attempts.

If you place water to completely flood the floor area around a monster spawner, will it prevent monsters from spawning? Or can monsters still spawn in water? The wiki says. Arqade is a question and answer site for passionate videogamers on all platforms. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Minecraft will mobs spawn in water