By sansneant
#212881 The vertical spawner formula from the wiki is floor(spawn radius/2)-1. When set as high as 5, that's floor(5/2)-1 = 2-1 = 1, meaning with a 5 block radius the spawner cannot spawn on the block above it and therefore cannot be placed in the floor in small rooms. This means that you need at least 6 blocks radius in X and Z directions for any spawn room, 12 block diameter, before you can place a spawner under the floor aesthetically, which forces builders to go wider than expected. Could we smooth the vertical spawn area at small radii [1..5] such that spawners can still be hidden under blocks? Suggested values: min height = 2 from radius 2 to 5, 1 for radius=1, remaining scaling identical.