Apply suggestions from code review
Merging @akien-mga's suggestion with the matching change to the CS project
Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
Use `System.Array.Empty<T>` to get an empty array instead of allocating
a new one every time. Since arrays are immutable there is no need to
allocate them every time.
While there are still various bugs to solve and features to implement, the C#
support as of Godot 3.4 is fairly mature and already used by a number of users
in production. Now that we default to dotnet CLI as build tool, it also seems
to be more reliable than MSBuild.
The documentation can (and does for the most part) point out some caveats that
users should be aware of, but this info dialog has outlived its intended
purpose.
- Fix C++ compile errors about pending variable renames after the `Reference` to `RefCount` change.
- Fix C# compile errors due to the recent rename of `EnablePlugin()` and `Build()`, which are now underscore-prefixed in bindings.
- Additional rename: `godot_icall_Reference_Dtor` to `godot_icall_RefCounted_Dtor`.
This source generator adds a newly introduced attribute,
`ScriptPath` to all classes that:
- Are top-level classes (not inner/nested).
- Have the `partial` modifier.
- Inherit `Godot.Object`.
- The class name matches the file name.
A build error is thrown if the generator finds a class that meets these
conditions but is not declared `partial`, unless the class is annotated
with the `DisableGodotGenerators` attribute.
We also generate an `AssemblyHasScripts` assembly attribute which Godot
uses to get all the script classes in the assembly, eliminating the need
for Godot to search them. We can also avoid searching in assemblies that
don't have this attribute. This will be good for performance in the
future once we support multiple assemblies with Godot script classes.
This is an example of what the generated code looks like:
```
using Godot;
namespace Foo {
[ScriptPathAttribute("res://Player.cs")]
// Multiple partial declarations are allowed
[ScriptPathAttribute("res://Foo/Player.cs")]
partial class Player {}
}
[assembly:AssemblyHasScripts(new System.Type[] { typeof(Foo.Player) })]
```
The new attributes replace script metadata which we were generating by
determining the namespace of script classes with a very simple parser.
This fixes several issues with the old approach related to parser
errors and conditional compilation.
It also makes the task part of the MSBuild project build, rather than
a separate step executed by the Godot editor.
This is needed with newer Mono versions, at least with Mono 6.12+
Depends on the following commit from our build scripts:
godotengine/godot-mono-builds@9d75cff174
Main benefits:
- Projects can be built offline. Previously you needed internet
access the first time building to download the packages.
- Changes to packages like Godot.NET.Sdk can be easily tested
before publishing. This was already possible but required
too many manual steps.
- First time builds are a bit faster, as the Sdk package doesn't
need to be downloaded. In practice, the package is very small
so it makes little difference.
Bumped Godot.NET.Sdk to 4.0.0-dev3 in order to enable the
recent changes regarding '.mono/' -> '.godot/mono/'.
- Removed item list that displayed multiple build
configurations launched. Now we only display
the last build that was launched.
- Display build output next to the issues list.
Its visibility can be toggled off/on.
This build output is obtained from the MSBuild
process rather than the MSBuild logger. As such
it displays some MSBuild fatal errors that
previously couldn't be displayed.
- Added a context menu to the issues list with
the option to copy the issue text.
- Replaced the 'Build Project' button in the panel
with a popup menu with the options:
- Build Solution
- Rebuild Solution
- Clean Solution
- The bottom panel button was renamed from 'Mono'
to 'MSBuild' and now display an error/warning icon
if the last build had issues.
Because `Strings OS_OSX::get_name() const` now returns "macOS" (15a9f94346)
The C# GodotTools were still using "OSX" as identifier a few things were borken (e.g. dotnet/msbuild detection).
When NormalizePath was called with an absolute
path (with drive letter) on Windows, it would
prepend a file path separator to the path, e.g.:
'\C:\Program Files\'.
Apparently this was still accepted as a valid
path by DotNetGlob and it stopped working when
we switched to MSBuildGlob.
MSBuild Item returns empty strings if an attribute isn't set (which
caused an IndexOutOfRangeException in NormalizePath).
We were treating Excludes incorrectly, Remove directives provide the
intended behaviour in the auto-including csproj format.
The editor wasn't clearing the debugger agent
settings properly after a processing a play
request from an IDE. This caused consequent play
attempts to fail if not launched from the IDE,
as the game would still attempt and fail to
connect to the debugger.
The concrete cause: Forgetting to clear the
`GODOT_MONO_DEBUGGER_AGENT` environment variable.
Godot.NET.Sdk
-------------
Godot uses its own custom MSBuild Sdk for game
projects. This new Sdk adds its own functionality
on top of 'Microsoft.NET.Sdk'.
The new Sdk is resolved from the NuGet package.
All the default boilerplate was moved from game
projects to the Sdk. The default csproj for
game project can now be as simple as:
```
<Project Sdk="Godot.NET.Sdk/4.0.0-dev2">
<PropertyGroup>
<TargetFramework>netstandard2.1</TargetFramework>
</PropertyGroup>
</Project>
```
Source files are included by automatically so
Godot no longer needs to keep the csproj in sync
when creating new source files.
Define constants
----------------
Godot defines a list of constants for conditional
compilation. When exporting games, this list also
included engine 'features' and platform 'bits'.
There were a few problems with that:
- The 'features' constants were only defined when
exporting games. Not when building the game for
running in the editor player.
- If the project was built externally by an IDE,
the constants wouldn't be defined at all.
The new Sdk assigns default values to these
constants when not built from the Godot editor,
i.e.: when built from an IDE or from the command
line. The default define constants are determined
from the system MSBuild is running on.
However, it's not possible for MSBuild to
determine the set of supported engine features.
It's also not possible to determine if a project
is being built to run on a 32-bit or 64-bit
Godot executable.
As such the 'features' and 'bits' constants had
to be removed.
The benefit of checking those at compile time
was questionable, and they can still be checked
at runtime.
The new list of define constants includes:
- GODOT
- GODOT_<PLATFORM>
Defaults to the platform MSBuild is running on.
- GODOT_<PC/MOBILE/WEB>
- TOOLS
When building with the 'Debug' configuration
(editor and editor player).
- GODOT_REAL_T_IS_DOUBLE
Not defined by default unless $(GodotRealTIsDouble)
is overriden to be 'true'.
.NET Standard
-------------
The target framework of game projects was changed
to 'netstandard2.1'.
