Move graphics code to smaller helper functions UpdateSessionVisibility,
UpdateSilhouettesVisibility and DrawPaths.
Remove the hotkey TODO code which should be implemented differently.
Mark voids as const.
Differential Revision: https://code.wildfiregames.com/D271
Patch By: Vladislav
This was SVN commit r19375.
Based on existing code that was still around from an old(not working)
implementation.
Supports basic control from trigger scirpts (queue, start and stop
camera paths) and works in multiplayer.
This was SVN commit r17594.
elexis