Editing Skyscrapersim 2.0 Alpha 9 Update 1

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'''Skyscrapersim 2.0 Alpha 9 Update 1 / 1.9.1''' was the 11th release of the 2.0 releases. It was released on March 31, 2015.
== Changelog ==
#play elevator door open/close and message sounds on reversal
#change to Go function in rev 3171 broke FloorHold feature; relocated code to fix
#added more breaks and other cleanups
#cleanups to elevator functions involving door lookups
#prevent nudge mode from enabling if elevator doors were manually moved and stopped
#elevator door open buttons now can be held down to hold doors and released to reset door timer
#in DoorExists function, can't mix GetDoor and array (this was causing the DoorExists function to potentially malfunction)
#reordered section information area in script interpreter for the other changes to be made possible
#user variables now work in section lines such as "<Floors>", due to code reordering
#removed unneeded fire phase 1 check in call button code
#reordered call availability code, to properly report service and nudge modes
#overhauled nudge mode to enable timer when the situation allows it
#if mesh physics is enabled, use a box collider by default
#if model physics is enabled, mesh code should not try to load collider model
#(Bullet) position update is no longer needed in penetration recovery function, and causes issues
#(Bullet) turn off contact normal direction fix, which inverts some polygon normals incorrectly
#(Bullet) fixed penetration recovery by running it in the forward movement function, right after the setting of the original position, to prevent interference with stairs
#have call availability check properly report busy if doors are held, instead of for other reason
#elevator doors can now report their hold status
#added more "Invalid Door" errors to nudge and sensor functions
#reworked door sensor code to split into separate persistent enabled/disabled state, and temporary activated/deactivated state
#changed Alarm button in elevator editor to Hold Doors
#elevator door sensor and nudge functions now properly select door object
#NewElevator and NewFloor functions should use GetFloor function instead of their own check, for performance
#some functions in Shaft and Stairwell code weren't checking validity of floors
#in Calc function, lowered precedence of subtraction operator due to order conflicts with other operators
#cut function should flip coordinates if out of order
#F6 key would cause a crash if current camera floor was invalid (mainly in empty buildings)
#elevator sensor status is now only shown after startup or in verbose mode
#car idle, motor idle and music sounds now load sounds on first run if not loaded yet, instead of in CreateElevator function
#added motor idle sound code, which was started in rev 1603 but never finished
#don't try to create wall/floor sides and top if thickness is 0
#cleaned up wall/floor function return codes and some legacy stuff
#added checks to AddWallMain and AddFloorMain functions to print an error if coordinates are invalid
#added a zero normal check to the texture mapper
#planar mapper should be computing normal based on full polygon, not just first three vertices. This fixes some texture mapping errors
#reverted behavior change to ShaftShowOutside command from revision 3194
#make sure that floors grouped with the current camera floor are not switched off as part of the shaft and stairwell ShowFloors code
#(C++) SplitData function now verifies length of string properly
#reverted and remade the fix to prevent crashes if no parameters are specified for certain commands
#moved the missing file report to after the raising of the main window, to prevent it from being hidden on startup
#in Calc function, handle a calculation error as a silent error instead of ignoring it, to prevent infinite loops
#fixed an issue where clicks on call button panels would trigger a down call
#reworked elevator call availability code, to return busy or an error, to prevent call buttons from looping if all elevators won't service the call
#fixed an issue where DeleteRoute would report even if a route is not deleted
#in the Reload code, since the Load function can unload the simulator if it encounters an error, exit to the main menu if this happens to prevent a crash
#ensure that the Reload flag is turned off after a reload, which prevents future startup issues
#system meshes should be created on engine startup, not separately in script interpreter. This fixes startup crashes that happen if no valid data is in the script file
#door resets now report in verbose mode
#(C++) renamed ResetDoorTimer functions to Reset and ResetDoors
#sensors will only enable if using automatic doors (AutoDoors is true)
#added a new action "sensorreset" as part of previous fix
#fixed issue where door sensors would reset door holds. Door hold and reset functions now disable and re-enable sensors, and leave the sensor alone if the sensor is calling those functions.
#in Calc function, allow decimal numbers without 0's at start
#fixed a click position offset in Freelook mode on Mac, and also did minor cleanups to the related code
#reworked the floor indicator code, consolidating and separating it properly
#elevator indicators should be enabled/disabled along with the elevator
#floor and directional indicators can now be deleted by ctrl-alt-click
#fixed mesh name of floor indicators
#minor code cleanups
#fixed an issue where all related elevator shaft doors would respond to door bumper code, instead of just the elevator's floor. Also cleaned up the code.
#added missing dbghelp.dll file (Windows packaging)
#F2 key now prints more detailed render statistics
#fixed length of floating point output in ToString functions, for Visual C++
#don't treat textures in ChangeTexture function as filenames, just material names - this fixes a lot of performance problems
#([[Triton Center]]) Hotel wall positioning fixes
#for call buttons, if all associated elevators are in a service mode, don't continue to search for more elevators; reset the call button instead
#fixed last report line from elevator's DumpQueues and DumpServicedFloors functions
#fixed an issue where floors listed in the ShowFloors or ShowOutside lists would be switched off when stopping and continuing at a floor
#fixed a crash that would occur if the Move button was pressed in the Object Manager if no selection was made
[[Category:Skyscraper versions]]