Improve static checks by using pre-commit

The setup is taken from the main Godot repository.

Author: Calinou

.github/scripts/gitignore_check.sh

@@ -0,0 +1,26 @@
+set -uo pipefail
+shopt -s globstar
+
+echo -e ".gitignore validation..."
+
+# Get a list of files that exist in the repo but are ignored.
+
+# The --verbose flag also includes files un-ignored via ! prefixes.
+# We filter those out with a somewhat awkward `awk` directive.
+	# (Explanation: Split each line by : delimiters,
+	# see if the actual gitignore line shown in the third field starts with !,
+	# if it doesn't, print it.)
+
+# ignorecase for the sake of Windows users.
+
+output=$(git -c core.ignorecase=true check-ignore --verbose --no-index **/* | \
+    awk -F ':' '{ if ($3 !~ /^!/) print $0 }')
+
+# Then we take this result and return success if it's empty.
+if [ -z "$output" ]; then
+    exit 0
+else
+	# And print the result if it isn't.
+    echo "$output"
+    exit 1
+fi

.github/workflows/static_checks.yml

@@ -9,11 +9,24 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v5
 
-      - name: Install dependencies
+      # This needs to happen before Python and npm execution; it must happen before any extra files are written.
+      - name: .gitignore checks (gitignore_check.sh)
         run: |
-          sudo apt-get update -qq
-          sudo apt-get install -qq dos2unix recode
+          bash ./.github/scripts/gitignore_check.sh
 
-      - name: File formatting checks (file_format.sh)
+      - name: Get changed files
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          bash ./file_format.sh
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            files=$(git diff-tree --no-commit-id --name-only -r HEAD^1..HEAD 2> /dev/null || true)
+          elif [ "${{ github.event_name }}" == "push" -a "${{ github.event.forced }}" == "false" -a "${{ github.event.created }}" == "false" ]; then
+            files=$(git diff-tree --no-commit-id --name-only -r ${{ github.event.before }}..${{ github.event.after }} 2> /dev/null || true)
+          fi
+          files=$(echo "$files" | xargs -I {} sh -c 'echo "\"./{}\""' | tr '\n' ' ')
+          echo "CHANGED_FILES=$files" >> $GITHUB_ENV
+
+      - name: Style checks via pre-commit
+        uses: pre-commit/action@v3.0.1
+        with:
+          extra_args: --files ${{ env.CHANGED_FILES }}

.pre-commit-config.yaml

@@ -0,0 +1,40 @@
+default_language_version:
+  python: python3
+
+repos:
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.4.1
+    hooks:
+      - id: codespell
+        additional_dependencies: [tomli]
+
+  - repo: local
+    hooks:
+      - id: file-format
+        name: file-format
+        language: python
+        entry: python file_format.py
+        types_or: [text]
+        exclude: |
+          (?x)^(
+            .*\.test\.txt|
+            .*\.svg|
+          )$
+
+      - id: dotnet-format
+        name: dotnet-format
+        language: python
+        entry: python dotnet_format.py
+        types_or: [c#]
+#
+# End of upstream Godot pre-commit hooks.
+#
+# Keep this separation to let downstream forks add their own hooks to this file,
+# without running into merge conflicts when rebasing on latest upstream.
+#
+# Start of downstream pre-commit hooks.
+#
+# This is still the "repo: local" scope, so new local hooks can be defined directly at this indentation:
+#     - id: new-local-hook
+# To add external repo hooks, bring the indentation back to:
+# - repo: my-remote-hook

2d/particles/point_normal_texture_image_outline.tres

@@ -13,4 +13,3 @@ data = {
 flags = 0
 image = SubResource( 1 )
 size = Vector2( 2048, 1 )
-

2d/particles/point_texture_emit.tres

@@ -17,4 +17,3 @@ image = SubResource( 1 )
 size = Vector2( 2048, 6 )
 storage = 0
 lossy_quality = 0.7
-

2d/particles/point_texture_image_outline.tres

@@ -13,4 +13,3 @@ data = {
 flags = 0
 image = SubResource( 1 )
 size = Vector2( 2048, 1 )
-

2d/role_playing_game/grid_movement/grid/lines/grid_lines_tileset.tres

@@ -14,4 +14,3 @@
 0/occluder_offset = Vector2( 32, 32 )
 0/navigation_offset = Vector2( 32, 32 )
 0/shapes = [  ]
-

2d/role_playing_game/theme/fonts/montserrat_extra_bold_16.tres

@@ -10,4 +10,3 @@ use_mipmaps = true
 use_filter = true
 font_data = ExtResource( 1 )
 _sections_unfolded = [ "Settings" ]
-

2d/role_playing_game/theme/fonts/montserrat_extra_bold_24.tres

@@ -10,4 +10,3 @@ use_mipmaps = true
 use_filter = true
 font_data = ExtResource( 1 )
 _sections_unfolded = [ "Settings" ]
-

2d/role_playing_game/theme/fonts/montserrat_extra_bold_32.tres

@@ -10,4 +10,3 @@ use_mipmaps = true
 use_filter = true
 font_data = ExtResource( 1 )
 _sections_unfolded = [ "Settings" ]
-