A 2D reflex-based game where you control a catcher bowl to grab falling diamonds before they hit the ground. Built using Python and OpenGL, and rendered completely with the Midpoint Line Drawing Algorithm and GL_POINTS.
Assignment 02 — 2D Game Implementation
Course: CSE423 (Computer Graphics, 0.75 credit)
Lab Instructor: Farhan Feroz [FHZ] & Arian Nuhan [CARN]
Semester: Spring 2025
You play as a catcher bowl at the bottom of the screen. Colored diamonds fall from the top, and your job is to catch them. If a diamond falls and hits the ground, it's game over. As time progresses, the diamonds fall faster, increasing the challenge!
- 🟣 Diamonds rendered using 8-way Midpoint Line Drawing
- 🎯 Catcher bowl made with 4 midpoint lines (trapezoid shape)
- 🖱️ Mouse-controlled UI with:
- Restart Button (↩️)
- Play/Pause Button (
▶️ /⏸️) - Quit Button (❌)
- 🎨 Bright, randomly colored diamonds
- 🕹️ Responsive horizontal movement using arrow keys
- ⏱️ Speed increases over time using delta time
- 📏 AABB-based collision detection
| Input | Action |
|---|---|
| ⬅️ / ➡️ | Move catcher left/right |
| Mouse Click | Interact with buttons (↩️ ⏸️ ❌) |
| Restart Btn | Starts a new game |
| Play/Pause Btn | Toggles falling/paused state |
| Quit Btn | Ends the game |
- Implemented Midpoint Line Drawing Algorithm for all shapes.
- Used zone conversion to support drawing lines in all 8 directions using a single method.
- Applied Axis-Aligned Bounding Box (AABB) collision detection.
- Used delta timing to ensure consistent motion across different frame rates.
- Python 3.x
- PyOpenGL
- PyOpenGL_accelerate
- 🔢 Assignment 01: 2D Transformations & Clipping
- 💎 Assignment 02: Catch the Diamonds! (this project)
- 🎮 Assignment 03: Bullet Frenzy 3D
Monowar Husain
📧 monowar@monowar.me
📧 monowarhusainomi@gmail.com
🌐 monowar.me