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https://github.com/haseeb-qureshi/asteroids

JS and HTML5 Canvas
https://github.com/haseeb-qureshi/asteroids

asteroids games html5-canvas javascript particle-effects

Last synced: about 2 months ago
JSON representation

JS and HTML5 Canvas

Host: GitHub
URL: https://github.com/haseeb-qureshi/asteroids
Owner: Haseeb-Qureshi
Created: 2015-05-26T01:02:00.000Z (over 9 years ago)
Default Branch: master
Last Pushed: 2016-01-19T23:21:19.000Z (almost 9 years ago)
Last Synced: 2023-02-28T05:41:37.768Z (almost 2 years ago)
Topics: asteroids, games, html5-canvas, javascript, particle-effects
Language: JavaScript
Homepage: http://haseeb-qureshi.github.io/Asteroids/
Size: 6.82 MB
Stars: 26
Watchers: 1
Forks: 18
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

# Asteroids Redux
###### A rejuvenation of the classic arcade game, made entirely in vanilla JS and HTML5 Canvas.

### LIVE AT: http://haseeb-qureshi.github.io/Asteroids/

**Note: HTML5 Canvas rendering has major performance issues on many versions of Firefox. Please use IE or Chrome to ensure stable performance.**

![asteroids](./assets/asteroids.gif)

## Features
* Dynamic difficulty
* Sound effects
* Powerups (triple laser, total destruction, and 1-up)
* Points and ranking system
* Custom-made particle effects
* Background track from Ikaruga!

## Implementation
* Extremely OO design, all objects strongly encapsulated
* Implements prototypical inheritance through surrogates (so all moving objects inherit common behavior from MovingObject class)
* Title screen stars are dynamically generated and drawn using O(n) algorithm
* Implements O(n) collision detection, measuring the radius of each collideable object with player's ship
* Particle effects generated dynamically using opacity and size throttling
* Garbage collects unused sprites and particles based on positioning and age
* Uses trigonometric functions to calculate movement physics, rotation, and ship geometry

# Todo
* Invincibility on spawn