NPC's (Non-playable-character's) are any game characters controlled by the computer through artificial intelligence. An NPC's behaviour is usually scripted and automatic, triggered by certain actions, or dialogue with the player.
Role of NPC's
- NPC's serve as vendors, for example by selling items.
- NPC's give out quests to the player.
- NPC's provide information about the game world and lore.
- NPC's are usually looped and when scripted do the same things every now and then.
- NPC's are usually friendly towards the players, although may be not if there are quests that tell us to attack a certain NPC which has a fight back script.