Unhandled Exception: System.Exception: 0.0001 is not a valid value for Single

[nylki]

On Fedora 24, Mono JIT compiler version 4.2.4.

WaveFunctionCollapse git:(master) ✗ mono Main.exe 
< Chess
> DONE
> DONE
< Chess
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
< City
> DONE
> DONE
< Flowers
> DONE
> DONE
< Hogs
> DONE
> DONE
< Hogs
> DONE
> CONTRADICTION
> CONTRADICTION
> CONTRADICTION
> DONE
< Knot
> DONE
> DONE
< Less Rooms
> DONE
> DONE
< Mountains
> DONE
> DONE
< Office
> DONE
> DONE
< Paths
> DONE
> DONE
< Platformer
> DONE
> DONE
< Platformer
> DONE
> DONE
< Red Maze
> DONE
> DONE
< Rooms
> DONE
> DONE
> DONE
< Rule 126
> DONE
> DONE
< Simple Knot
> DONE
> DONE
< Simple Maze
> DONE
> DONE
< Simple Wall
> DONE
> DONE
< Simple Wall
> DONE
> DONE
< Simple Wall
> DONE
> DONE
< Simple Wall
> DONE
> DONE
< Trick Knot
> DONE
> DONE
< Village
> DONE
> DONE
< Water
> DONE
> DONE
< Summer

Unhandled Exception:
System.Exception: 0.0001 is not a valid value for Single. ---> System.FormatException: Input string was not in a correct format.
  at System.Number.ParseSingle (System.String value, NumberStyles options, System.Globalization.NumberFormatInfo numfmt) <0x413eb590 + 0x00183> in <filename unknown>:0 
  at System.Single.Parse (System.String s, NumberStyles style, System.Globalization.NumberFormatInfo info) <0x413eb550 + 0x00017> in <filename unknown>:0 
  at System.Single.Parse (System.String s, NumberStyles style, IFormatProvider provider) <0x413eb440 + 0x0003b> in <filename unknown>:0 
  at System.ComponentModel.SingleConverter.FromString (System.String value, System.Globalization.NumberFormatInfo formatInfo) <0x413eb3d0 + 0x0001f> in <filename unknown>:0 
  at System.ComponentModel.BaseNumberConverter.ConvertFrom (ITypeDescriptorContext context, System.Globalization.CultureInfo culture, System.Object value) <0x413d5060 + 0x00259> in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.ComponentModel.BaseNumberConverter.ConvertFrom (ITypeDescriptorContext context, System.Globalization.CultureInfo culture, System.Object value) <0x413d5060 + 0x0028b> in <filename unknown>:0 
  at System.ComponentModel.TypeConverter.ConvertFromString (System.String text) <0x413cc070 + 0x00021> in <filename unknown>:0 
  at Stuff.Get[T] (System.Xml.XmlNode node, System.String attribute, T defaultT) <0x413eac30 + 0x000b7> in <filename unknown>:0 
  at SimpleTiledModel..ctor (System.String name, System.String subsetName, Int32 width, Int32 height, Boolean periodic, Boolean black) <0x413e7000 + 0x01827> in <filename unknown>:0 
  at Program.Main () <0x4135ee30 + 0x003fb> in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.Exception: 0.0001 is not a valid value for Single. ---> System.FormatException: Input string was not in a correct format.
  at System.Number.ParseSingle (System.String value, NumberStyles options, System.Globalization.NumberFormatInfo numfmt) <0x413eb590 + 0x00183> in <filename unknown>:0 
  at System.Single.Parse (System.String s, NumberStyles style, System.Globalization.NumberFormatInfo info) <0x413eb550 + 0x00017> in <filename unknown>:0 
  at System.Single.Parse (System.String s, NumberStyles style, IFormatProvider provider) <0x413eb440 + 0x0003b> in <filename unknown>:0 
  at System.ComponentModel.SingleConverter.FromString (System.String value, System.Globalization.NumberFormatInfo formatInfo) <0x413eb3d0 + 0x0001f> in <filename unknown>:0 
  at System.ComponentModel.BaseNumberConverter.ConvertFrom (ITypeDescriptorContext context, System.Globalization.CultureInfo culture, System.Object value) <0x413d5060 + 0x00259> in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.ComponentModel.BaseNumberConverter.ConvertFrom (ITypeDescriptorContext context, System.Globalization.CultureInfo culture, System.Object value) <0x413d5060 + 0x0028b> in <filename unknown>:0 
  at System.ComponentModel.TypeConverter.ConvertFromString (System.String text) <0x413cc070 + 0x00021> in <filename unknown>:0 
  at Stuff.Get[T] (System.Xml.XmlNode node, System.String attribute, T defaultT) <0x413eac30 + 0x000b7> in <filename unknown>:0 
  at SimpleTiledModel..ctor (System.String name, System.String subsetName, Int32 width, Int32 height, Boolean periodic, Boolean black) <0x413e7000 + 0x01827> in <filename unknown>:0 
  at Program.Main () <0x4135ee30 + 0x003fb> in <filename unknown>:0 

[drake7707]

I assume your locale is using the comma as decimal point. Changing the current thread culture to System.Globalization.Culture.InvariantCulture should fix the problem.

[nylki]

I assume your locale is using the comma as decimal point

I actually do. I am sorry, but I have no experience with Mono; could you indicate where the change would have to be made, in the code or as a compiler argument?

[drake7707]

in Program.cs in the Main method (which is the entry point of the application) add the following before the whole XML parsing is going on, so at the top of the method: System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;

[nylki]

@drake7707 Thank you, that worked! :)

I'll leave the issue open for @mxgmn to decide what to do with it.

[Cookingsource]

I had the same problem, i solved it in a pull request. The method he currently uses to parse strings into numbers does it with local system locale. There's an alternative that uses a culture invariant locale.

[petersvp]

Add using System.Globalization;

in Main add: CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;

This will force proper culture. Also, set Bulgaria as your region during development, it will help you a lot with fixing such stuff :)

[mxgmn]

I merged @Cookingsource 's PR, so this should be solved.