Adding github action to monitor for dungeon gen changes

.github/workflows/test-seed-catalog.yml

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+name: "Compare Seed Catalogs"
+on:
+  pull_request:
+    branches:
+    - 'release'
+
+jobs:
+
+  linux-test:
+    runs-on: ubuntu-20.04
+    steps:
+    - name: "Install dependencies"
+      run: |
+        sudo apt update -y
+        sudo apt install -y libsdl2-dev libsdl2-image-dev
+
+    - name: "Checkout sources"
+      uses: actions/checkout@v3
+
+    - name: "Compile"
+      run: |
+        make bin/brogue
+
+    - name: "Run seed catalog regression tests"
+      run: |
+        python3 test/compare_seed_catalog.py test/seed_catalogs/seed_catalog_brogue.txt 40
+        python3 test/compare_seed_catalog.py --extra_args "--variant rapid_brogue" test/seed_catalogs/seed_catalog_rapid_brogue.txt 10

test/compare_seed_catalog.py

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+import subprocess
+import argparse
+import sys
+import os
+
+def run_brogue_tests(seed_catalog_file, extra_args, max_level):
+
+    output_seed_catalog_file = f'output_seed_catalog_{max_level}.txt'
+    seed_catalog_cmd_args = f'--print-seed-catalog 1 25 {max_level}'
+
+    # Generate the first 25 seeds
+    if extra_args:
+        brogue_command = f'./brogue {extra_args} {seed_catalog_cmd_args} > {output_seed_catalog_file}'
+    else:
+        brogue_command = f'./brogue {seed_catalog_cmd_args} > {output_seed_catalog_file}'
+    print(f"Running {brogue_command}...")
+    brogue_result = subprocess.run(brogue_command, shell=True, capture_output=True, text=True)
+
+    # Run diff to compare the seed catalog files
+    print (f"Comparing {seed_catalog_file} and {output_seed_catalog_file}...")
+
+    diff_command = f"bash -c 'diff <(sed \"1,4d\" {seed_catalog_file}) <(sed \"1,4d\" {output_seed_catalog_file})'"
+    diff_result = subprocess.run(diff_command, shell=True, capture_output=True, text=True)
+
+    # Delete the output seed catalog file
+    os.remove(output_seed_catalog_file)
+
+    if brogue_result.returncode:
+        print("Test run failure, seed catalog generation failed. Output:")
+        print(brogue_result.stdout)
+        sys.exit(1)
+
+    if diff_result.returncode:
+        print("Test run failure, seed catalog has changed.\nIf this was intentional, update the seed catalogs by running update_seed_catalogs.py.\nOutput:")
+        print(diff_result.stdout)
+        sys.exit(1)
+
+    print("Seed catalog identical - test run successful")
+
+def main():
+    # Create the argument parser
+    parser = argparse.ArgumentParser(description='Brogue Seed Compare Test Runner')
+    parser.add_argument('seed_catalog', help='Seed catalog file to compare')
+    parser.add_argument('max_level', help='Maximum level to generate seeds for')
+    parser.add_argument('--extra_args', help='Extra command-line arguments to be passed to brogue (e.g. to select variant)')
+
+    # Parse the command line arguments
+    args = parser.parse_args()
+
+    # Call the function to run the brogue tests
+    run_brogue_tests(args.seed_catalog, args.extra_args, args.max_level)
+
+if __name__ == '__main__':
+    main()