diff --git a/src/ai/heuristics/bumpiness.py b/src/ai/heuristics/bumpiness.py
index 03b4828..17c57ae 100644
--- a/src/ai/heuristics/bumpiness.py
+++ b/src/ai/heuristics/bumpiness.py
@@ -4,4 +4,13 @@ import numpy as np
 def bumpiness(
     field: np.ndarray[int, np.dtype[np.uint8]],
 ) -> int:
-    pass
+    """
+    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)))))