Upload app.py

app.py

@@ -0,0 +1,209 @@
+import streamlit as st
+import math
+import random
+
+class TicTacToe:
+    def __init__(self):
+        """Initialize the game board"""
+        self.board = [[' ' for _ in range(3)] for _ in range(3)]
+        self.current_winner = None
+
+    def make_move(self, row, col, player):
+        """Make a move on the board"""
+        if self.board[row][col] == ' ':
+            self.board[row][col] = player
+            return True
+        return False
+
+    def check_winner(self):
+        """Check for a winner"""
+        # Check rows
+        for row in self.board:
+            if row[0] == row[1] == row[2] != ' ':
+                return row[0]
+        
+        # Check columns
+        for col in range(3):
+            if self.board[0][col] == self.board[1][col] == self.board[2][col] != ' ':
+                return self.board[0][col]
+        
+        # Check diagonals
+        if self.board[0][0] == self.board[1][1] == self.board[2][2] != ' ':
+            return self.board[0][0]
+        if self.board[0][2] == self.board[1][1] == self.board[2][0] != ' ':
+            return self.board[0][2]
+        
+        return None
+
+    def is_board_full(self):
+        """Check if the board is full"""
+        return all(cell != ' ' for row in self.board for cell in row)
+
+    def minimax(self, depth, is_maximizing, alpha, beta):
+        """Minimax algorithm with Alpha-Beta pruning"""
+        winner = self.check_winner()
+        
+        # Terminal states
+        if winner == 'X':
+            return 1
+        elif winner == 'O':
+            return -1
+        elif self.is_board_full():
+            return 0
+
+        if is_maximizing:
+            max_eval = -math.inf
+            for i in range(3):
+                for j in range(3):
+                    if self.board[i][j] == ' ':
+                        self.board[i][j] = 'X'
+                        eval = self.minimax(depth + 1, False, alpha, beta)
+                        self.board[i][j] = ' '
+                        max_eval = max(max_eval, eval)
+                        alpha = max(alpha, eval)
+                        if beta <= alpha:
+                            break
+            return max_eval
+        else:
+            min_eval = math.inf
+            for i in range(3):
+                for j in range(3):
+                    if self.board[i][j] == ' ':
+                        self.board[i][j] = 'O'
+                        eval = self.minimax(depth + 1, True, alpha, beta)
+                        self.board[i][j] = ' '
+                        min_eval = min(min_eval, eval)
+                        beta = min(beta, eval)
+                        if beta <= alpha:
+                            break
+            return min_eval
+
+    def find_best_move(self):
+        """Find the best move for the AI"""
+        best_val = -math.inf
+        best_move = None
+        
+        for i in range(3):
+            for j in range(3):
+                if self.board[i][j] == ' ':
+                    self.board[i][j] = 'X'
+                    move_val = self.minimax(0, False, -math.inf, math.inf)
+                    self.board[i][j] = ' '
+                    
+                    if move_val > best_val:
+                        best_move = (i, j)
+                        best_val = move_val
+        
+        return best_move
+
+def main():
+    # Set page configuration
+    st.set_page_config(
+        page_title="Tic-Tac-Toe AI",
+        page_icon=":game_die:",
+        layout="centered"
+    )
+
+    # Custom CSS for styling
+    st.markdown("""
+    <style>
+    .stButton>button {
+        width: 100px;
+        height: 100px;
+        font-size: 48px;
+        margin: 5px;
+    }
+    .title {
+        text-align: center;
+        color: #4a4a4a;
+    }
+    .subtitle {
+        text-align: center;
+        color: #6a6a6a;
+    }
+    </style>
+    """, unsafe_allow_html=True)
+
+    # Title and introduction
+    st.markdown("<h1 class='title'>🎲 Tic-Tac-Toe AI 🤖</h1>", unsafe_allow_html=True)
+    st.markdown("<h3 class='subtitle'>Can you beat the AI?</h3>", unsafe_allow_html=True)
+
+    # Initialize game state
+    if 'game' not in st.session_state:
+        st.session_state.game = TicTacToe()
+        st.session_state.game_over = False
+        st.session_state.winner = None
+
+    # Function to handle button clicks
+    def button_click(row, col):
+        # Check if game is not over and the cell is empty
+        if not st.session_state.game_over and st.session_state.game.board[row][col] == ' ':
+            # Player's move
+            st.session_state.game.make_move(row, col, 'O')
+            
+            # Check for player win
+            winner = st.session_state.game.check_winner()
+            if winner:
+                st.session_state.game_over = True
+                st.session_state.winner = winner
+                return
+            
+            # Check for draw
+            if st.session_state.game.is_board_full():
+                st.session_state.game_over = True
+                return
+            
+            # AI's move
+            ai_move = st.session_state.game.find_best_move()
+            if ai_move:
+                st.session_state.game.make_move(ai_move[0], ai_move[1], 'X')
+            
+            # Check for AI win
+            winner = st.session_state.game.check_winner()
+            if winner:
+                st.session_state.game_over = True
+                st.session_state.winner = winner
+
+    # Render the game board
+    game_board = st.columns(3)
+    for row in range(3):
+        with game_board[row % 3]:
+            for col in range(3):
+                # Create a button for each cell
+                button_label = st.session_state.game.board[row][col]
+                button_key = f"button_{row}_{col}"
+                
+                # Style buttons based on their content
+                if button_label == 'O':
+                    button_style = "background-color: #FF6B6B; color: white;"
+                elif button_label == 'X':
+                    button_style = "background-color: #4ECDC4; color: white;"
+                else:
+                    button_style = ""
+                
+                # Create the button
+                if st.button(button_label, key=button_key, 
+                             on_click=button_click, 
+                             args=(row, col),
+                             disabled=st.session_state.game_over or button_label != ' ',
+                             help="Click to make your move"):
+                    pass
+
+    # Display game result
+    if st.session_state.game_over:
+        if st.session_state.winner == 'O':
+            st.success("🎉 Congratulations! You won!")
+        elif st.session_state.winner == 'X':
+            st.error("🤖 AI wins! Better luck next time.")
+        else:
+            st.warning("🤝 It's a draw!")
+
+    # Restart game button
+    if st.button("New Game", help="Start a new game"):
+        st.session_state.game = TicTacToe()
+        st.session_state.game_over = False
+        st.session_state.winner = None
+        st.rerun()
+
+if __name__ == "__main__":
+    main()