Game loop cleanup

[adam4813]

Description

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

Attention: Patch coverage is 9.31677% with 146 lines in your changes missing coverage. Please review.

Project coverage is 10.88%. Comparing base (27bf5da) to head (6d0d63a).

Files with missing lines	Patch %	Lines
client/game.cpp	0.00%	35 Missing ⚠️
common/controllers/fps-controller.cpp	0.00%	31 Missing ⚠️
client/graphics/render-list.hpp	3.70%	26 Missing ⚠️
common/lua-system.cpp	22.58%	24 Missing ⚠️
common/physics-system.cpp	0.00%	11 Missing ⚠️
client/manipulators/placement.cpp	0.00%	9 Missing ⚠️
client/game.hpp	0.00%	5 Missing ⚠️
common/components/collision-body.hpp	0.00%	1 Missing ⚠️
common/controllers/fps-controller.hpp	75.00%	1 Missing ⚠️
common/multiton.hpp	0.00%	1 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #246      +/-   ##
==========================================
+ Coverage   10.86%   10.88%   +0.01%     
==========================================
  Files         110      110              
  Lines       13348    13335      -13     
==========================================
+ Hits         1450     1451       +1     
+ Misses      11898    11884      -14     

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