This function is ran every time the entity receives an input. Umsg.End ( ) - We don't need any content in the usermessage so we're sending it empty now. Umsg.Start ( 'ShopNPCUsed', Caller ) - Prepare the usermessage to that same player to open the menu on his side. The following code will detect that event.įunction ENT:AcceptInput ( Name, Activator, Caller ) if Name = 'Use' and Caller:IsPlayer ( ) then The traditional way to interact with NPCs is by using them.

Self:SetMaxYawSpeed ( 90 ) -Sets the angle by which an NPC can rotate at once. Self:SetUseType ( SIMPLE_USE ) - Makes the ENT.Use hook only get called once at every use. Self:CapabilitiesAdd ( CAP_ANIMATEDFACE | CAP_TURN_HEAD ) - Adds what the NPC is allowed to do ( It cannot move in this case ). Self:SetSolid ( SOLID_BBOX ) - This entity uses a solid bounding box for collisions. Self:SetHullType ( HULL_HUMAN ) - Sets the hull type, used for movement calculations amongst other things.

Self:SetModel ( 'models/humans/group01/female_01.mdl' ) - Sets the model of the NPC. Make sure to have included a before this.įunction ENT:Initialize ( ) -This function is run when the entity is created so it's a good place to setup our entity. The following initialization code will setup your entity to be a regular NPC. function ENT:SetAutomaticFrameAdvance ( bUsingAnim ) - This is called by the game to tell the entity if it should animate itself. It is important for this code to be ran before the rest, so it should be included in both your server and client init files.ĮNT.Base = 'base_ai' - This entity is based on 'base_ai'ĮNT.Type = 'ai' - What type of entity is it, in this case, it's an AI.ĮNT.AutomaticFrameAdvance = true - This entity will animate itself. The a file is traditionally included by the server and the client lua states, so it is a good place to setup information that will be useful to both.

The other thing you will need is a way to tell when the player wants to interact with your NPC and react to it. You will have to set it up like a regular scripted NPC but won't have to play with AI or schedules. You don't really need to move or react to indirect events. A working example is included at the end.Ĭreating a shop NPC is not very difficult as it is the simplest form of a NPC. Note : This tutorial assumes you know how to create a scripted entity and only covers the parts that are required to make a working shop NPC. This tutorial will teach you how to create a simple shop menu for when you press 'E' on a certain NPC

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