asteroids

The classic asteroids 2-D space game remade in javascript with color, explosions, and full simulation collision physics.

How to Play

WASD keys are used for movement. Left click fires a missile which will follow the mouse position. Right click fires a missile which goes straight.

Collision Physics

Each body (your ship, the missiles, asteroids) carries momentum and is accurately simulated with collision physics.
u_i: initial velocity
v_i: final velocity
m_i: mass

Elastic Collision

v₁ = [(m₁ - m₂) / (m₁ + m₂)]u₁ + [(2 m₂) / (m₁ + m₂)]u₂
v₂ = [(2 m₁) / (m₂ + m₁)]u₁+[(m₂ - m₁) / (m₂ + m₁)]u₂

Conservation of Momentum

m₁u₁ + m₂u₂ = m₁ v₁ + m₂ + v₂

Installation

To play the game, clone the repository into a your local folder and open the html file in a browser.