TypeScript Game Boy emulator (WIP)
You can easily use all the classes provided by ts-gb to integrate
it into a website or an electron app.
$ yarn add ts-gb
import { System } from 'ts-gb/dist/system';
// Initializing a System instance that holds
// all the necessary components. You can also
// initialize each one of them manually if you
// want to.
const system = new System();
// Loading an optional bootrom
system.loadBootRom(arrayBuffer);
// Loading a game
system.loadGame(arrayBuffer);
// If you decide to change ROMs after
// initializing everything don't forget
// to reset all the components (CPU,
// memory, display, DMA handler)
system.reset();Once that's done you'll have to handle the following things:
- When a button is pressed you'll have to call
system.joypad.down(button)followed bysystem.joypad.up(button)when it is released - The
system.tick()method will have to be called at a frequency of 1MHz.
You'll then be able to use one of the two provided graphic
renderers or to directly read the
data returned by the system.display.getFrontBuffer() method
everytime you want to refresh your screen (the closer from
59.7 FPS the better).
The audio is a bit harder to implement since you have to
basically create all the noises yourself based on the state of
the various channels of the Audio component. Luckily ts-gb
also provides a basic Tone.js renderer
that is probably accurate enough for most games.
If you want to see how all of that can be done take a look at the TS-GB Web implementation.