Complete exercise 23

23 Move a player part 1/exercise-01.py

@@ -0,0 +1,95 @@
+# create a board game grid 8x8
+# number rows and columns
+# add player location in bottom left (*)
+# print out the grid
+# add a move function that takes in the grid and returns the new grid
+
+class Board:
+    def __init__(self, rows, columns):
+        self.rows = rows
+        self.columns = columns
+        self.grid = [["O" for i in range(columns)] for j in range(rows)]
+        self.player_location = (7, 0) # bottom left
+        
+    def format_grid(self):
+        header = "   " + " ".join(f"{j:>2}" for j in range(self.columns)) + "\n"
+        result = header
+        for i in range(self.rows):
+            row_cells = []
+            for j in range(self.columns):
+                if (i, j) == self.player_location:
+                    row_cells.append(" *")
+                else:
+                    row_cells.append(f" {self.grid[i][j]}")
+            result += f"{i:>2} " + " ".join(row_cells) + "\n"
+        return result
+    
+    def move(self, x, y):
+        """ moves x right and y up """
+        # bottom left = 7, 0
+        # bottom right = 7, 7
+        # top left = 0, 0
+        # top right = 0, 7
+        
+        row, col = self.player_location
+        
+        self.grid[row][col] = "O"  # clear previous location
+        
+        new_col = col + x
+        new_row = row - y  # subtract, since row 0 is the top
+        
+        if new_col < 0 or new_col > self.columns - 1:
+            raise ValueError("Invalid X coordinate")
+        elif new_row < 0 or new_row > self.rows - 1:
+            raise ValueError("Invalid Y coordinate")
+        
+        self.grid[new_row][new_col] = "*"
+        self.player_location = (new_row, new_col)
+
+        return self.player_location
+    
+board = Board(8, 8)
+
+def get_move(board):
+    raw = input("Enter direction and magnitude (u, d, l, r) (q to quit): ").strip().lower()
+    if not raw:
+        return get_move(board)  # or handle empty input as you see fit
+
+    letter, mag_str = raw[0], raw[1:].strip()
+    if letter == "q":
+        return None
+
+    try:
+        magnitude = int(mag_str)
+    except ValueError:
+        print("Invalid magnitude.")
+        return get_move(board)
+
+    moves = {
+        "u": (0, magnitude),
+        "d": (0, -magnitude),
+        "l": (-magnitude, 0),
+        "r": (magnitude, 0),
+    }
+
+    if letter not in moves:
+        print("Invalid direction.")
+        return get_move(board)
+
+    return board.move(*moves[letter])
+    
+def main():
+    while True:
+        try:
+            move = get_move(board)
+            
+            if move is None:
+                quit()
+            
+            print(board.format_grid()) 
+        except ValueError as e:
+            print(e)
+            print("Please dont go out of bounds")
+
+if __name__ == "__main__":
+    main()