Instant Rocket Fuel
If you want to create a browser game with Coffeescript based on the Canvas element, you will likely need some classes like that provide a game loop, Sprites, Animation and so on.
Have a look at the documentation at http://kolja.github.com/Instant-Rocket-Fuel/.
To create a game, just inherit from Game and overwrite the update and render functions. Update and render will run in a timebased loop.
You can choose to add more than one Scene to your game. Just put them in separate classes and add them to the Scenemanager.
Add Sprites to the Objects in your game and render them to the canvas. A Sprite can be instantiated with a Texture. Then you can add Shapes (Static Images) and Animations to it.
to control the movement of the objects in your game, just supply them with a Vector for speed and location. There are functions to add, subtract and do all kinds of operations.