The scan kept each local player's blip count and the scan order in one
array of four, the counts first and the order from 2, and had two camera
positions: all the Xbox's two player co-op needed. With three or four
local players in split screen they were written past their ends and into
the function's stack guard, which halted the game as it started drawing
the HUD ("corrupt stack at 0!"). The counts and the order are now arrays of
their own, and there is a camera position for every local player.
(cherry picked from commit 266a556967273bfcf096c1e6009acdb7a5ee045d)
(cherry picked from commit c02cb986c2c5acc6426fcb043f39d1062617f7f7)
(cherry picked from commit ee9cbf17d1422f2b57b5ca07c98010ece1bcbad6)