MHaptic : a Haptic Manipulation Library for Generic Virtual Environments

In the virtual ball game, such as soccer, football, basketball and hockey etc. in a virtual space, "pass" plays have a significant meaning for players to build up their games. Goodness of a passes course and its velocity is continuously varied, both spatially and temporarily by all motions of ally player avatars and opponent player avatars attending in the game. Because of this, a significant pass between the avatars may not easily be able to be analyzed and generated by the computer systems in real-time. In this paper, we propose a new algorithm that can realize this computation in real-time. Concretely, a real-time detection of a "space " or an "open space " for every avatar by using the idea of "AtoZ (allocated topographical zone)" that Kawano et al., have already proposed. Based on this idea, we compute the reachable pass vector to any avatar in the game. Moreover, the space where a player can receive a pass given by the pass vector, prior to any other player, is defined as an "exclusively reachable pass zone" for the receiver, and is able to be computed by the algorithm.