Talk:NPC/@comment-25259368-20140807232020/@comment-3157150-20151009042045

To state the specifics as to whether NPCs will move out because of Corruption/Crimson, please consider the following:

''A House is considered uninhabitable due to proximity to a dangerous biome based on its "Corruption/Crimson rating", which calculates all tiles in a 45-block radius around the house; a house's Corruption/Crimson rating must be 250 or less. This is about half the blocks in the radius. This is the scoring system as to how this is worked out:
 * Each tile of Ebonstone/Crimstone, Ebonsand/Crimsand, and Corrupted/Crimson vines/plants increases a House's Corruption/Crimson rating by 1.
 * Each tile of Hallowed grass, Pearlsand, and Hallowed vines/plants reduces the rating by 1.
 * Each Sunflower reduces a House's Corruption Rating by 5.''