feat(ai): add bumpiness calculation

src/ai/moves/bumpiness.py

@@ -0,0 +1,16 @@
+import numpy as np
+
+
+def bumpiness(
+    field: np.ndarray[int, np.dtype[np.uint8]],
+) -> int:
+    """
+    Calculate the bumpiness of a given signal based on peaks.
+
+    Args:
+        field: The game field.
+
+    Returns:
+        The bumpiness of the field.
+    """
+    return int(np.sum(np.abs(np.diff(field.shape[0] - np.argmax(field, axis=0)))))

src/ai/moves/holes.py

@@ -1,5 +1,3 @@
-from typing import Optional
-
 import numpy as np
 
 

tests/ai/test_moves.py

@@ -1,6 +1,7 @@
 import unittest
 
 import numpy as np
+from ai.moves.bumpiness import bumpiness
 from ai.moves.height import aggregate_height
 from ai.moves.holes import holes
 from ai.moves.lines import complete_lines
@@ -27,3 +28,6 @@ class TestFitness(unittest.TestCase):
 
     def test_holes(self) -> None:
         self.assertEqual(holes(self.field), 2)
+
+    def test_bumpiness(self) -> None:
+        self.assertEqual(bumpiness(self.field), 6)