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Annotated code

A series of short, heavily annotated JavaScript programs.

Space Invaders

Demonstrates an animation loop, collision detection, keyboard input, drawing to the canvas and playing sounds.

A screenshot of Space Invaders

To read the annotated source, open /space-invaders/docs/space-invaders.html in your browser.

Circles bouncing off lines

Demonstrates some simple trig that calculates the movement of circles as they bounce off lines.

An animation of circles bouncing off lines

To read the annotated source, open /circles-bouncing-off-lines/docs/circles-bouncing-off-lines.html in your browser.