Labelling addresses, adding initial happiness calculation
Fixing spelling mistake
Fixing spelling mistake (guest)
Merge with upstream
Forgot to save before merge..
Implemented check affordability and cleanedup some function calls to use openrct
Add description comment for viewport_create
Now uses viewport functions.
Fix small errors. Does not work with window resize.
Fixed small bug causing a crash when resizing.
Added stub viewport_paint function
Added error_string_quit and a litle part of viewport_create
Finished first draft of viewport_create
Fixed bugs related with last commit
 Implemented draw_rain_animation

Implemented the first level of the rain drawing routine.
Still not sure what the parameter means, so I keep its register name.
Rename variables in draw_rain_animation

Renamed variables to better represent their meaning.
Use global g_window_list instead of manually fetching it.
Merge pull request #144 from MaciekBaron/master

Labelling addresses, adding initial happiness calculation
Merge pull request #211 from duncanspumpkin/viewport_create

Viewport create
Merge pull request #212 from marcotc/rain

 Implemented draw_rain_animation
Merge pull request #213 from duncanspumpkin/game_cleanup

Implemented check affordability and clean up