feat: added the first heuristic

src/agents/heuristic.py

@@ -9,4 +9,29 @@ def utility(gameState: Board) -> int:
 
 def aggregate_heights(gameState: Board) -> int:
     """ Returns the sum of the heights of the columns in the game state. """
-    pass
+    checkedList = [0 for i in range(gameState.columns)]
+    for i in range(gameState.rows):
+        for j in range(gameState.columns):
+            if gameState.board[i][j] > 0:
+                if checkedList[j] == 0:
+                    checkedList[j] = gameState.rows - i+1
+    return sum(checkedList)
+
+
+
+
+if __name__ == "__main__":
+    board = Board()
+    board.board =\
+    [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
+    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
+    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
+    [0, 0, 1, 0, 0, 0, 0, 0, 0, 0], 
+    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
+    [0, 1, 0, 1, 0, 0, 0, 0, 0, 0], 
+    [1, 0, 0, 0, 0, 0, 1, 0, 0, 0], 
+    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], 
+    [0, 0, 0, 0, 1, 0, 0, 0, 0, 0], 
+    [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]
+
+    assert aggregate_heights(board) == 27