Platformer2D builds on Windows 10 but not on macOS 10.15.1

[willowell]

Solution tried on Windows 10: Samples-WindowsDX.sln Solution tried on macOS 10.15.1: Samples-OSX.sln

Mono version: 6.4.0.208 (2019-06/07c23f2ca43 Wed Oct 2 04:52:23 EDT 2019) MonoGame version: 3.7.1 Visual Studio for Mac version: 8.3.10

Upon opening Samples-OSX.sln, Visual Studio reported that it could not find Lidgren.Network.MacOS.csproj or MonoGame.Framework.MacOS.csproj. The Platformer2D project has a warning on it that the MonoMac extension is not installed.

I then removed Lidgren.Network.MacOS and MonoGame.Framework.MacOS from the solution.

I then downloaded the MonoGame 3.7.1 source code, put it in my home directory (/Users/$name), built it with "mono Protobuild.exe," and then copied Lidgren.Network.MacOS.csproj and MonoGame.Framework.Net.MacOS.csproj into the solution.

Building it results in two warnings and one error: • The two included projects cannot find the assemly System.Drawing.Common.dll • /Users/$name/MonoGame-3.7.1/MonoGame.Framework/CSC: Error CS0006: Metadata file '/Users/$name/MonoGame-3.7.1/MonoGame.Framework/bin/MacOS/AnyCPU/Debug/MonoGame.Framework.dll' could not be found (CS0006) (MonoGame.Framework.Net.MacOS)

Additionally, the Platformer2D.csproj file defines DEBUG MONOMAC but not MONOMAC on its own, so I do not know if Program.cs(2): #if MONOMAC even works.

I also do not know if the using statements at the top of Program.cs are still valid now that Xamarin.Mac is a thing. I know that Microsoft's Xamarin "Hello_Mac" sample works just fine for me, so using AppKit; using Foundation; should be fine, but it seems that I would have to add Xamarin.Mac to the solution for that. I have not yet tried doing that.

Furthermore, the dotnet mgdesktopgl template builds just fine for me, so I am assuming that MonoMac/Xamarin.Mac is why Platformer2D refuses to build for me.

[SimonDarksideJ]

Will validate this as part of the 3.8 upgrade #50