The Arms Dealer needs proximity to a Demon Altar or Crimtane Block to sell cursed bullets, and the Clothier requires a Demon Altar to craft armor. Clothier: Must be within 42 tiles of a Demon Altar/Crimtane Block.
Optimizing Camp to Fortress Layout for NPC Efficiency
Placing all your combat-ready npcs, such as the Arms Dealer, Demolitionist, and Cyborg, near the heart of your base minimizes the distance they need to travel to assist you during invasions. Conversely, support npcs like the Witch Doctor, Dye Trader, and Steampunker, who offer services you use less frequently, can be relegated to the periphery.
Maximizing Efficiency with Workstation Alignment Placing npc housing directly adjacent to their required workstations is a non-negotiable optimization for serious players. If these workstations are separated by multiple tiles or rooms, the npc will refuse to move in or will constantly pathfind inefficiently.
Terraria Efficient Camp To Fortress: Optimizing NPC Pathfinding and Workstation Layout
Leveraging Pathfinding and Tile Placement Terraria's ai pathfinding is notoriously strict, and npcs will walk through platforms to reach a target if there is a gap smaller than a tile width. The background wall is the most critical element; without it, the game registers the structure as mere scaffolding or an incomplete room, rendering it useless for ai pathfinding and claiming.
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