Event Based NPC Body Language System

Bringing NPC's to life - Event Based NPC Body Language System

Brief
My aim was to develop a system that changes the physical appearance of NPCs (non-Player Characters) in response to in-game events. Examples include altering facial expressions, blinking frequency, and more.

The Event-Based NPC Body Language System is designed to be straight forward. It consists of three classes that interact to provide full functionality.

Lerping is used to make gradual changes to expressions and body language rather than instant snapping.
Values of 80 and 20 were chosen for testing, representing 100% and 20% of the blend shape influence, respectively, as the system clamps values between 0 and 5 (each increment representing 20%).

The system allows NPCs to show physical, behavioral, and attitudinal responses to in-game events.
Users can set values to change based on any desired event by creating a GameObject for the NPC and an instance of the EmotionalStateManager.
The function 'emotionalStateManager.TriggerSmoothEmotionChange(npc, EmotionalStateManager.EmotionType.mouthSmile, 4, 2.0f)' is used to apply changes to the NPC, specifying the emotion, intensity, and duration for the change.