How do I make the Clothier NPC happy in Terraria?

To make the Clothier NPC happy in Terraria, you need to understand the NPC happiness system, which was introduced in the 1.4 update. This system allows NPCs to have preferences for specific biomes and neighbors, which directly affects their happiness. A happy NPC will offer discounts on their items and, in some cases, sell unique items that are otherwise unavailable. The Clothier, who sells vanity items and decorative clothing, has specific preferences that you need to consider to maximize his happiness.

First, let's discuss the mechanics of NPC happiness. Each NPC has a preferred biome and a list of NPCs they like, love, or dislike as neighbors. The Clothier prefers the Underground biome, which includes areas like the Cavern layer or any underground-themed biome such as the Underground Desert or Underground Snow. If you place him in his preferred biome, his happiness will increase. Additionally, the Clothier loves the Truffle NPC as a neighbor, likes the Mechanic, and dislikes the Nurse and the Arms Dealer. Placing him near NPCs he likes or loves will further boost his happiness, while placing him near NPCs he dislikes will decrease it.

To make the Clothier happy, follow these steps. First, build a suitable house in the Underground biome. This can be done by digging down to the Cavern layer and creating a room with walls, a chair, a table, and a light source. Ensure the room is valid housing by checking with the housing menu. Once the room is ready, assign the Clothier to it. Next, place the Truffle or Mechanic NPC nearby. If you don't have the Truffle, the Mechanic is a good alternative. Avoid placing the Nurse or Arms Dealer near the Clothier, as this will make him unhappy.

There are some important tips and considerations to keep in mind. First, the Underground biome can be dangerous, so make sure to secure the area with traps, lighting, and defensive structures to protect the Clothier from enemies. Second, if you're playing in a world where the Underground Corruption or Crimson is present, ensure the Clothier's house is far enough from these biomes to prevent biome overlap, which could affect his happiness. Third, if you're using the Mechanic as a neighbor, remember that she prefers the Snow biome, so you might need to balance their placements if you want both to be happy.

Common mistakes to avoid include placing the Clothier in the wrong biome or near NPCs he dislikes. For example, placing him in the Surface Forest biome or near the Nurse will make him unhappy, leading to higher prices and no unique items. Another mistake is not securing the Underground biome properly, which can result in the Clothier being killed by enemies, forcing you to wait for him to respawn.

Advanced techniques involve optimizing NPC placements to maximize happiness for multiple NPCs. For example, you can create a multi-NPC town in the Underground biome, placing the Clothier, Truffle, and Mechanic close together. This setup ensures all three are happy, as the Truffle loves the Clothier, and the Mechanic likes the Clothier. Additionally, you can use pylons to create a network of teleportation points, making it easier to travel between biomes while keeping NPCs happy in their preferred locations.

Resource requirements and preparation include gathering materials for building houses, such as wood, stone, and torches. You may also need to craft furniture like chairs and tables. If you're building in a dangerous area, consider gathering materials for traps, platforms, and defensive walls. For advanced setups, you might need to gather materials for pylons, which require specific biome-specific items sold by happy NPCs.

Class and equipment considerations are minimal for this task, as it primarily involves building and NPC management. However, if you're working in a dangerous Underground biome, having a good set of armor and weapons can help protect you while you build. A ranged or magic class might be preferable for dealing with enemies from a distance.

In specific scenarios, such as a world with extensive Corruption or Crimson, you might need to purify the area around the Clothier's house using purification powder or the Clentaminator. This ensures the biome remains suitable for his happiness. Another scenario involves multiplayer worlds, where coordinating with other players to build and protect the Clothier's house can make the process easier and more efficient.

By following these steps and considerations, you can make the Clothier NPC happy in Terraria, ensuring he offers discounts and unique items while contributing to a thriving town.