Design And Implementation Of The Warning Simulation System Based On The OGRE Engine

In recent years, security incidents at public place occur sometimes, some place such as the transport hub or subway also have many security risks, which threat human life and property and bring economic loss with different levels. The system is designed for subway precaution and simulation, which combines monitoring and simulation capabilities. The system is not only a command platform, adjusts the decision-making and rescue measures, implements scientific prediction and risk assessment, but also it’s an information platform, which provides simulation of typical emergencies, rescue operations deployment and exercises.This article first introduces the above-mentioned project background. It includes the reason why the company has developed this system and the expected harvest. Then the article introduces the OGRE open-source engine profiles, which allows readers to have a detailed understanding of the OGRE engine. The core part of this systems focuses on three aspects, the first is the characters roaming at three-dimensional scene; the second is designing and implementing the path planning module for the subway crowd, the path planning module mainly uses the RoadMap technology. In real-time movement simulation department, this system mainly uses HiDAC model which combines geometry and psychological characteristics, and forms a diversity of character behavior, so the system can simulate the scene realistically; the third is the AI path finding module, this module is based on the A*algorithm. In order to accelerate the search speed and improve efficiency, the module uses the binary heap to optimize the open list sorting. At the same time, it combines with the system characteristics and adds quad tree scene dividing, at last, geometric connectivity expands semantic connectivity to achieve the design goals.This system implements the characters roaming at3D scene perfectly, and basically meets the needs of the ten thousand class scene simulation in AI path finding and path planning. It is helpful for the field of virtual reality, especially for virtual world and virtual city.