Update C# Contribution Examples and Guidelines (#6039)

Updated C# guidelines.
This commit is contained in:
Vanessa
2026-06-21 15:59:47 +02:00
committed by GitHub
parent c69fb99600
commit c7aa50cf85
+75 -15
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@@ -73,28 +73,88 @@ If you are adding a lot of C# code, then take advantage of partial classes. Put
Otherwise, **add comments on or around any changed lines.**
A comment on a new imported namespace:
### Single-Line Changes
Format should look like this.
```cs
using Content.Server.Psionics.Glimmer; // DeltaV
/* Importing Namespaces - Include optional comment if its not obvious what its being used for. */
using Content.Server._DV.Psionics.Glimmer; // DeltaV
using Content.Shared.Damage.Systems; // DeltaV - Addition of HandHeldArmor
/* Changing an upstream line - Same line as the change */
if (!TryComp<EyeComponent>(ent, out var eye) || _disabled) // DeltaV - check if disabled
/* Adding - Either same line or above the line. */
EnsureComp<PotentialPsionicComponent>(entity); // Deltav - Psionics
/* "Deleting" - Don't actually delete, just comment out and say why. This only applies to upstream code. */
// args.StatusIcons.Add(_prototype.Index(component.Icon)); // DeltaV - commented out. status icon now added above
```
A pair of comments enclosing a block of added code:
> * Its pretty obvious in the example above that importing `Content.Server._DV.Psionics.Glimmer` means we'll be interacting with glimmer so putting `// DeltaV - Add Glimmer` is needlessly redundant.
> * It's not as obvious what the `Content.Shared.Damage.Systems` namespace is used for, since its so broad, so adding a comment what feature is using it helps.
> * Actual code changes should almost always include the comment after ``// DeltaV`.
### Multi-Line Changes
Depending on how much you are editing, putting a comment on EACH line may be excessive, so if you have a larger block of code you are changing, denote it like so:
```cs
private EntityUid Slice(...)
// BEGIN DeltaV - Remove innate radio and radios from pockets
for (var i = 1; i <= 4; i++) // Arachnids have 4 pockets
{
if (_inventory.TryGetSlotEntity(target, $"pocket{i}", out var headset) && HasComp<HeadsetComponent>(headset))
_inventory.TryUnequip(target, $"pocket{i}", true, true);
}
RemComp<ActiveRadioComponent>(target); // If the zombie has an innate radio, get rid of it.
// END DeltaV
```
> * Denoting these with a BEGIN and END clearly shows they are block of code without having to read the entire comment. This makes it easier to tell when you're dealing with single-line comments versus a block with merging in conflicts.
> * Case and order of the first two words is less of a concern. `// DeltaV Begin` or `// Begin DeltaV` will work fine too.
> * Try to make your blocks as small as possible, but use your discretion.
> * If you deleting multiple lines, use line comments (``//``) if its a few lines but if its a larger block (like commenting out an entire function), it is preferable to use block comments (`/* */`).
#### Soft Exceptions to the Multi-Line "Rules"
Some multi-line changes can use a single-line comment in certain scenarios. But if you are UNSURE, just use `// BEGIN DeltaV` and `// END DeltaV` comments like the previous section does and it'll be fine.
I'll give some examples.
```cs
/* This change comments out 3 lines but only needs a single line comment because commenting out the if statement implies that its logic will be commented out too. */
// if (obj.WasModified<TraitPrototype>()) // DeltaV - Refreshed in TraitsTab
// {
// _profileEditor.RefreshTraits();
// }
/* Same principle here. This adds two lines but the if statement implies the next line so commenting both lines isn't really needed. */
if (_flight.IsFlying(entity.Owner)) // DeltaV - Harpy Flight
return true;
```
### New Methods or Component Variables
Sometimes, you'll need to implement a whole new method or component variable and instead of wrapping it in `// BEGIN DeltaV` and `// END DeltaV`, you can just denote that it's a DeltaV function in the summary block before the function. This denotes the WHOLE function as a DeltaV addition.
```cs
/* New Method Example */
/// <summary>
/// DeltaV - Handle revealing ninja if cloaked when attacked by a hitscan attack.
/// </summary>
private void OnNinjaAttacked(Entity<SpaceNinjaComponent> ent, ref DamageChangedEvent args)
{
...
_transform.SetLocalRotation(sliceUid, 0);
// DeltaV - start of deep frier stuff
var slicedEv = new FoodSlicedEvent(user, uid, sliceUid);
RaiseLocalEvent(uid, ref slicedEv);
// DeltaV - end of deep frier stuff
...
}
/* New Component Variable Example */
/// <summary>
/// DeltaV - If disabled the action will not disable when no charges remain. Use if you want to handle no charges differently.
/// </summary>
[DataField]
public bool DisableWhenEmpty = true;
```
In short:
* Use `// BEGIN DeltaV` and `// END Delta` to denote a *block* of changes.
* Keep blocks as small as possible.
* Use `// DeltaV` on or before the line if its not a block of changes.
* Use exceptions when they make sense.
### Changing Upstream Localization Fluent .ftl files
**Move all changed locale strings to a new DeltaV file** - use a `.ftl` file in the `_DV` folder. Comment out the old strings in the upstream file, and explain that they were moved.
@@ -104,10 +164,10 @@ Example:
Commented out old string in `Resources\Locale\en-US\xenoarchaeology\artifact-analyzer.ftl`
```
# DeltaV - moved to _DV file
#analysis-console-info-effect-value = [font="Monospace" size=11][color=gray]{ $state ->
# analysis-console-info-effect-value = [font="Monospace" size=11][color=gray]{ $state ->
# [true] {$info}
# *[false] Unlock nodes to gain info
#}[/color][/font]
# }[/color][/font]
```
The new version of the string in `Resources\Locale\en-US\_DV\xenoarchaeology\artifact-analyzer.ftl`