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World Director NPC

Fly Dream Dev - Dec 3, 2020

The World Director NPC plugin is ideal for creating games where there are many pawns in the world at the same time. You can simulate a whole world of thousands of pawns. You can create an entire populated city. The plugin is easy to use.

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  • Supported Platforms
  • Supported Engine Versions
    4.25 - 4.26
  • Download Type
    Engine Plugin
    This product contains a code plugin, complete with pre-built binaries and all its source code that integrates with Unreal Engine, which can be installed to an engine version of your choice then enabled on a per-project basis.

Demo Video, Build

OTHER ASSETS


World Director NPC - now work with World Composition.


Update 1.1 - Now compatible with Population Control

1. + Add offset parameter to layers. This removes the shaking when the actor is on the boundaries of the optimization layers.

2. + Added override the global parameters of the layers. Now you can adjust the radius separately for each actor and NPC. For example, you can spawn small objects much closer, which gives additional optimization. After all, a rabbit is smaller than a dinosaur and it is not necessary to see it at a distance of several hundred meters.

3. + New events in Blueprint in your NPC BehindCameraFOV and InCameraFOV for optimization your code.

4. + New optimization for NPC components now all components are optimized, not just the MovementComponent. Which adds to the performance.

5. + Added support for the new Population Control system


Attention! After upgrading from UE 4.26 to 4.26.1, when the project starts in the editor and finishes, the editor may crash. Please see the documentation on how to get around this.


The World Director NPC plugin is ideal for creating games where there are many pawns in the world at the same time. The level of your pawns, their location, scale, the rotation will always be preserved, as well as they will always move, even if you are very far away, which creates a simulation of the living world. You can simulate a whole world of thousands of pawns. You can create an entire populated city. The plugin is easy to use.

This is a comprehensive system for optimizing a large number of NPCs in locations. World Director NPC is perfect for creating open-world games of any size. You will no longer have to think about spawning characters and removing pawns if your character has come or gone from the place where the pawns should be. If you spawn pawns near the character and leave this place, the pawns continue to move and they do not affect the FPS. On my system with an AMD 2700X processor, I achieved 200000+ pawns at 120+FPS. When the character returns to the same location, the pawns return to the world with the same characteristics (health, level.).

Now I'll explain how it works. The system is divided into 4 optimization levels that work simultaneously for the best FPS performance. 

Level 1 - if the pawn is out of the camera's view, all its components and skeletal meshes are disabled from the render, and a set of optimization measures is applied, such as animation playback and tick rate. 

Level 2 - if the pawn is further away from the character than you set in the settings of The World Director NPC plugin, it is deprecated while retaining all its settings. At this level, this pawn is calculated for its position in the world, as well as finding a way to walk. The search takes place in the radius you set completely randomly. All calculations are based on your Navigation Mesh. Pawns will also bypass walls and obstacles. 

Level 3 - If the pawn is even further away, on the border of level 3. the number of simultaneously walking pawns is further reduced for optimization. 

Level 4 - at this level, the pawn stops moving, but still continues to exist. And if your character gets closer, the pawn gets to level 3 and starts moving.

While at level 2.3.4, pawns can't act according to the Behavior Tree, but they can still walk.

All calculations for hidden pawns at level 2.3.4 occur using multithreading for better FPS.


World Director NPC - Documentation

World Director NPC + Population Control - Documentation


All plugins for optimizing your project:

  1. Loot Generator
  2. World Director PRO (included World Director Actor and World Director NPC)
  3. World Director NPC
  4. World Director Actor
  5. Population Control

Technical Details

Features:

  • The system is divided into 4 optimization levels that work simultaneously for the best FPS performance.
  • At level 1 if the pawn is out of the camera's view, all its components and skeletal meshes are disabled from the render, and a set of optimization measures is applied, such as animation playback and tick rate. While at level 2.3.4, pawns can't act according to the Behavior Tree, but they can still walk.
  • Massive NPC optimization
  • On my system with an AMD 2700X processor, I achieved 200000+ pawns at 120+FPS.
  • All calculations for hidden pawns at level 2.3.4 occur using multithreading for better FPS.
  • If the pawn is out of the camera's view, all its components and skeletal meshes are disabled from the render.
  • Doesn't require knowledge of C ++
  • The plugin is easy to use.

Code Modules:

  •  ADirectorNPC(Type: Runtime)
  •  UNpcDataComponent(Type: Runtime)

Number of Blueprints: 3

Number of C++ Classes: 2

Network Replicated: No

Supported Development Platforms: Win64

Supported Target Build Platforms: Win64

Documentation: Documentation, Discord

Example Project: Included

Important/Additional Notes: World Director NPC - PRO with multiplayer.