| Military training is an important link in the military construction of various countries.For countries in the world,actual combat training will be restricted by security,economic level,international politics and other aspects,and the training effect is difficult to achieve the set goals.Therefore,the application prospect of the virtual battlefield environment is very broad.It can provide the same simulation environment as the real exercise area for personnel training,combat exercises and weapon development and testing.It can also construct a relatively special typical simulation training environment for specific training projects.Because the virtual battlefield environment has many unique advantages in contemporary military training exercises,such as economy,science,and intuitiveness,it uses modern advanced computer technology and virtual reality technology to develop a set of flexible configuration and realistic screen simulation battlefield tests.The environment is very necessary and important.To develop a virtual battlefield environment with a particularly high degree of reality,the two key technologies needed are rendering and special effects.To achieve a faster rendering speed,higher requirements must be put forward for the creation of 3D models of real terrain and the simplification of large-scale scenes,and the contradiction between real-time rendering and realistic rendering accuracy must be taken into account during development.So far,there are very few researches on the real terrain creation technology of virtual battlefields using Unity3d engine and real terrain data.In order to draw the real terrain with both high precision and fast rendering speed,this paper uses the real terrain satellite map and its elevation map when creating the terrain,and after comparing and analyzing the traditional mesh simplification algorithm,the edge folding progressive is used.The triangle mesh folding LOD simplification algorithm of the grid algorithm simplifies the terrain,ensuring the fidelity of the terrain while ensuring the rendering efficiency.And in-depth study of the basic principles of the particle system,using the technology that combines the particle system and texture mapping when performing special effects simulations to achieve the effect of reducing the complexity of rendering particles.The rain and snow weather environment and the special effects of smoke during explosions are simulated,and the size of rain and snow can be adjusted in real time according to different combat requirements.To enable trainees to more completely identify and be familiar with various types of tanks,a module that can display virtual tanks in all directions was designed and implemented.This article uses the object pool technology in Unity3D to realize the virtual battlefield display module.After optimization using the object pool technology,the module takes up less resources and the tanks appearing in the module can be called efficiently at any time.Secondly,the virtual battlefield scene roaming module was designed and developed using the scene roaming technology,and the rigid body system was used to simulate gravity,so that the trainees could understand the actual combat environment during the training before the training and prepare for the training.In order to make the battlefield environment more realistic,the intelligent tank system is designed and implemented,and Nav Mesh components are used to realize the path planning of the tank.And in order to enhance the tank’s ability to judge autonomous decision-making,a simple auditory and visual intelligent perception system was implemented using the sensors and triggers in Unity3D.The system’s autonomous decision-making ability was also designed in the design of the system.Corresponding finite state machine and self-service behavior decision-making system are designed so that the tank can make more accurate behaviors in the combat environment. |
