Add Car Racing Game with pygame

Car_racing_game/README.md

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+# Car Racing Game
+
+A car racing game built with Python and Pygame. Avoid enemy cars, collect power-ups, and achieve the highest score.
+
+## Installation
+
+1. Install Pygame:
+   ```bash
+   pip install pygame
+   ```
+
+2. Run the game:
+   ```bash
+   python car_racing_game.py
+   ```
+
+## Controls
+
+- **Move**: Arrow keys or WASD
+- **Quit**: ESC
+
+**Note**: Car can only turn when moving. Reverse steering is automatically adjusted.
+
+## Gameplay
+
+- Avoid enemy cars (they deal damage)
+- Collect power-ups for speed boosts and health
+- Score points by surviving and collecting items
+- Game gets harder as you advance levels
+
+## Scoring
+
+- Survival: +1 point per frame
+- Enemy car passed: +10 points
+- Power-up collected: +50 points
+- New level every 1000 points
+
+## Power-ups
+
+- **Yellow**: Speed boost (permanent)
+- **Green**: Health pack (+30 health, capped at 100)
+- **Blue**: Shield (+10 health, capped at 100)
+
+## Level Scaling
+
+- Enemy spawn frequency increases by 20% per level
+- Max enemy cars increases by 1 per level (capped at 8)
+- Enemy speed increases by 0.5 per level
+- Spawn timing gets faster each level
+
+## Technical Details
+
+- **Resolution**: 800x600 pixels
+- **FPS**: 60 FPS
+- **Car Size**: 60x60 pixels
+- **Road Boundaries**: Automatic enforcement
+
+## File Structure
+
+```
+Car Racing Game/
+├── car_racing_game.py
+├── requirements.txt
+├── README.md
+└── assets/
+    ├── topcar.png      # Player car
+    ├── redcar2.png     # Red enemy
+    ├── bluecar.png     # Blue enemy
+    └── yellowcar.png   # Yellow enemy
+```
+
+## Troubleshooting
+
+- **Game won't start**: Install pygame with `pip install pygame`
+- **Poor performance**: Close other applications
+- **Controls not working**: Make sure game window is focused