Abstract: A system, apparatus, and method are directed to synchronizing a result from a physics engine with a result from a game logic. Synchronization of results may be achieved by employing an arbitration rule to determine which result may dictate an overall game action. The game logic is enabled to determine a result for a game logic entity. The physics engine determines a result for an associated physics proxy. Upon determination of the result for the game logic entity, the physics engine determines the result for the associated physics proxy. If it is determined from the physics result that an interaction between objects occurred, the physics result is employed to synchronize the game logic result; otherwise, the result for the game logic entity is employed to drive the result for the physics proxy.

Abstract: A system and method directed to speculating a collision in a video game. A vectorial sum of vertices of a first object, a second object, and motion vector for the first object is used to determine if a collision occurs. A shifted motion vector beginning at an origin within the vectorial sum, with substantially same orientation as the motion vector is employed to determine an intersection on a collision plane. A first triangle is constructed containing the origin and having vertices among vertices of the vectorial sum. Subsequent triangles sharing one edge with a previous triangle are constructed without overlapping. The iterative construction process is terminated when no vertex of the vectorial sum remains to be selected for a new triangle. A time and location of the collision is determined based on coordinates of the triangle vertices establishing a length of a line segment between the origin and the intersection.