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논문 기본 정보

자료유형
학술저널
저자정보
Hyungil Kim (Korea Nazarene University) Kyeonah Yu (Duksung Women"s University) Juntae Kim (Dongguk University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.6 No.6
발행연도
2011.11
수록면
867 - 873 (7page)

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초록· 키워드

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A navigation mesh (NavMesh) is a suitable tool for the representation of a three-dimensional game world. A NavMesh consists of convex polygons covering free space, so the path can be found reliably without detecting collision with obstacles. The main disadvantage of a NavMesh is the huge state space. When the A<sup>*</sup> algorithm is applied to polygonal meshes for detailed terrain representation, the pathfinding can be inefficient due to the many states to be searched. In this paper, we propose a method to reduce the number of states searched by using visibility tests to achieve fast searching even on a detailed terrain with a large number of polygons. Our algorithm finds the visible vertices of the obstacles from the critical states and uses the heuristic function of A<sup>*</sup>, defined as the distance to the goal through such visible vertices. The results show that the number of searched states can be substantially reduced compared to the A<sup>*</sup> search with a straight-line distance heuristic.

목차

Abstract
1. Introduction
2. Pathfinding on a NavMesh
3. Pathfinding with Visibility Tests
4. Simulation Results
5. Conclusion
References

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