🚀Refactor game with settings module + add AI mode, pause feature, and improved collision handling

[siddhi123890]

🧩 Overview

This PR improves the Pong game by enhancing code structure, gameplay features, and maintainability.

Key improvements:

Centralized configuration using a new settings.py
Added AI (single-player) mode
Added pause/resume functionality
Improved collision detection logic
General code cleanup and refactoring
✨ Features Added
🤖 Single Player Mode (AI Paddle)
Added optional AI-controlled left paddle
Paddle automatically follows the ball

Can be toggled in settings.py:

SINGLE_PLAYER = True

⏸️ Pause / Resume Feature
Press Spacebar to pause/resume the game
Stops ball movement and screen updates during pause
⚙️ Settings Module
Introduced settings.py to store all configurable values:
Screen size and appearance
Paddle movement and boundaries
Ball speed and behavior
Collision thresholds
Game rules (win score, AI toggle)
🎯 Game Over System
Game ends when a player reaches the defined score limit
Displays winner message on screen
🛠️ Improvements
✅ Fixed Collision Logic
Corrected paddle collision condition to avoid logical errors due to operator precedence
🧹 Code Refactoring
Renamed variables for consistency:
X_move → x_move
Y_move → y_move
Removed unused objects
Improved function naming (go_up, go_down)
Replaced hardcoded values with configurable settings
📁 Files Modified / Added
➕ Added
settings.py (central configuration file)
🔄 Updated
main.py (game loop, AI, pause feature, settings integration)
ball.py (movement logic using settings)
paddle.py (movement boundaries from settings)
scoreboard.py (game over support)
🧪 How to Test
Run the game:
python main.py
Controls:
W / S → Left paddle
↑ / ↓ → Right paddle
Space → Pause / Resume
Optional:
Enable/disable AI in settings.py
Modify speed and difficulty via settings