Adapters are used to communicate between virtual hardware and the browser (or nodejs, or anything else). Currently, there are 3 adapters: Keyboard, Mouse and Screen. Adapters are passed through settings.keyboard_adapter, settings.mouse_adapter and settings.screen_adapter respectively, but they can also be undefined.

Here is a list of functions that must be implemented by adapters:

ScreenAdapter:

• put_pixel(x, y, color)
• put_pixel_linear(offset, color_part)
• put_char(row, col, chr, bg_color, fg_color)
• update_cursor(row, col)
• update_cursor_scanline(start, end)
• clear_screen()
• timer_graphical()
• timer_text()
• set_mode(is_graphical)
• set_size_graphical(width, height)
• set_size_text(rows, cols)
• destroy()

KeyboardAdapter:

• init(send_code_fn)
• destroy()
• enabled

MouseAdapter:

• init(click_fn, move_fn, wheel_fn)
• destroy()
• enabled

More

In addition to adapters, the following functions must be provided in global scope (TODO: Improve that).

• next_tick()
• set_tick(fn)
• log(str) - only in debug modes