solved minor bug issues

1 problem:
-when there's more than 4 bots flocking towards 1 bot (player/girl), if
the surrounding grids are occupied by collidables/outside of grid
system, the bots won't know where to go, and will cause a huge lag issue
in the system
-in other words, in any situation where the number of bots moving
towards one point are more than the available spaces directly around 1
bot, the game goes haywire