vsTASKER is an advanced, real-time simulation toolkit developed by Virtual Sim. It allows engineers and developers to design, build, and visualize complex logic and behavioral models—like military defense scenarios, satellite orbits, or autonomous drones—without starting from scratch.Key FeaturesVisual Logic & C++ Generation: Uses diagrams (like Grafcets and Behavior Trees) to build rules, then automatically generates C++ code.Real-Time Scenario Editor: Provides a 2D map for designing simulations and monitoring them at runtime.3D Visualization: Supports integration with engines like OpenSceneGraph and VegaPrime to render highly detailed 3D environments.

Space & Satellite Simulation:

Includes built-in orbit definitions, satellite propagation, and space-to-ground visibility testing.Behavior Modeling: Perfect for testing artificial intelligence and autonomous systems like underwater drones and missiles.

vsTASKER handles:Space and Satellite Orbit simulationsAutonomous Vehicle / Drone behavior testingMilitary and Defense tactical scenarios

vsTASKER is a specialized real-time simulation software development kit (SDK) developed by VirtualSim. It is primarily designed for the defense industry, aerospace, and system integration to develop, animate, and visualize complex real-time scenarios.Instead of building simulation software from scratch, engineers use vsTASKER's graphical paradigm and automatic C++ code generation to create standalone, high-performance simulation engines.

Core Technical ArchitectureVisual Programming:
It features a diagram editor to build complex logic, state machines, and knowledge bases graphically.

Automatic C++ Code Generation:
It transforms your visual behavior diagrams directly into optimized, compiled C++ code.

White-Box System:
It functions as an open system where engineers can directly inject custom C/C++ code, avoiding the constraints of restrictive "black-box" platforms.

Independent Execution:
The generated code compiles into standalone executables or DLLs, allowing them to run independently of the main vsTASKER graphical user interface (GUI).

Key FeaturesBehavior Modeling:
Quickly model specific entity paths, responses, and tactics (e.g., drone swarm movements, pathfinding, or threat evasions).Integrated Visualization: Includes a 2D OpenGL map display for rapid scenario setup alongside an integrated OpenSceneGraph (OSG) 3D engine and 3D globe display for space missions.

Environment Systems:
Built-in multi-layered terrain modeling, weather effect systems, and collision detection.Space & Orbit Simulations: Includes space orbit propagators (such as SGP4, J2, and Two-Body models) capable of handling NORAD Two-Line Element (TLE) descriptions for satellite tracking.

Military Interoperability: Supports industry-standard distributed simulation protocols like DIS (Distributed Interactive Simulation) and HLA (High Level Architecture).

Common ApplicationsvsTASKER is used across a variety of simulation environments:Defense & Electronic Warfare: Anti-missile Monte Carlo systems and battlefield simulations.Unmanned Systems: UAV path optimization and autonomous underwater vehicle (AUV) sonar navigation testing.High-End 3D Integrations: Plugs natively into third-party engines such as Presagis VegaPrime, Satellite Toolkit (STK), and Calytrix Titan Vanguard.Civilian Training: Air Traffic Control (ATC) collision forecasting and heavy rail train cabin simulators.
ATC Tower Simulator

Targets Localization from Drone

Train Cab Trainer simulator

Dynamic Shield with Drone Swarm

Proximity Mesh and Combinatorial Explosion

Avionics Scenario Edition made easy

Tactical Display simplified

The Game of Life Algorithm

Stress testing with 20000 Entities

Streaming Airline Traffic with ADS-B

vsTASKER,A Simulation SDK

vsVIEWER Free Real-time Image Generator

vsRAD Real-time SDK displays Radar echoes

Titan Vanguard Integration

Frigate indirect fire on Porto Island

300 Infantrymen over a Minefield

Automatic Trailer Parking

Radar raw data Simulation

Radar simulation for Maritime Surveillance

Building a push-back simulator from Scratch

ADS-B import for ATC Simulation

Fire at Take-Off and Emergency Landing

CIGI Benchmarking (VBS-IG & FAST-IG)

High Frequency radio waves Propagation

Triton integration for Maritime Simulation

VBS-3 integration using ASI Interface

Satellite Communications

Trajectory optimization for missile flying NOE

Optimal Radar positioning for Missile Detection

Satellite and Orbit editing for Space Simulation

Satellite Toolkit (STK) Integration

SeaMotion Integration

Missile to Missile software Simulation

HMI Builder – An Interface for your Simulations

Avionics HMI simulation Tool ( Vstasker )