CI: use custom godot build

.github/scripts/godot_ci_cache.py

@@ -0,0 +1,79 @@
+# 
+# Fixes https://github.com/godotengine/godot/issues/77508
+# original script source: https://gist.github.com/d6e/5ed21c37a8ac294db26532cc6af5c61c
+#
+
+import os
+import subprocess
+import time
+import re
+from pathlib import Path
+
+# Set the path to your Godot project and Godot executable
+GODOT_PROJECT_PATH = Path(".")
+GODOT_EXECUTABLE = "godot"  # or the path to your Godot executable
+GODOT_LOG_FILE = Path("artifacts") / "godot_output.log"  # Log file to store Godot output
+
+print("Building godot cache...", flush=True)
+start_time = time.time()
+
+# Step 1: Recursively find all '.import' files and collect the expected imported file paths
+expected_imported_files = set()
+for import_file in GODOT_PROJECT_PATH.rglob('*.import'):
+    content = import_file.read_text()
+    matches = re.findall(r'dest_files=\["(res://\.godot/imported/.+?)"\]', content)
+    expected_imported_files.update(matches)
+
+total_imports = len(expected_imported_files)
+print(f"Found {total_imports} references to imported files...", flush=True)
+
+# Step 2: Launch Godot in the background to start the import process
+print("Starting Godot to import files...", flush=True)
+GODOT_LOG_FILE.parent.mkdir(parents=True, exist_ok=True)
+with GODOT_LOG_FILE.open("w") as log_file:
+    try:
+        godot_process = subprocess.Popen(
+            [GODOT_EXECUTABLE, "--path", str(GODOT_PROJECT_PATH), "--editor", "--headless"],
+            stdout=log_file,
+            stderr=subprocess.STDOUT
+        )
+    except Exception as e:
+        print(f"Failed to start Godot: {e}")
+        exit(1)
+
+# Step 3: Continually check if the expected imported files exist
+imported_folder = GODOT_PROJECT_PATH / ".godot/imported"
+while expected_imported_files:
+     # Wait until the imported directory exists
+    if not imported_folder.exists():
+        print(f"Waiting for the imported directory to be created by Godot...")
+        time.sleep(1)
+        continue
+
+    for expected_path in list(expected_imported_files):
+        imported_file_path = GODOT_PROJECT_PATH / expected_path.replace("res://", "")
+        if imported_file_path.exists():
+            expected_imported_files.remove(expected_path)
+    imported_count = total_imports - len(expected_imported_files)
+    print(f"Imported {imported_count} / {total_imports} files...")
+    time.sleep(1)  # Wait for a second before checking again
+
+elapsed_time = time.time() - start_time
+print(f"Imported all files in {elapsed_time:.2f} seconds.", flush=True)
+
+# Step 4: Once all files have been imported, quit Godot
+try:
+    print("Quitting Godot...", flush=True)
+    start_time = time.time()
+    godot_process.terminate()
+    godot_process.wait(timeout=10)
+
+except subprocess.TimeoutExpired:
+    print("Godot did not terminate in a timely manner; killing the process.")
+    godot_process.kill()
+finally:
+    elapsed_time = time.time() - start_time
+    print(f"Godot has been closed in {elapsed_time:.2f} seconds.", flush=True)
+
+print("All files have been imported. Godot has been closed.")
+