GB BASIC

GameBuilder BASIC (GB BASIC) is a retro Fantasy Console that generates ROMs compatible with the popular handheld game console. It has everything ready-to-use for writting code, making assets, compiling projects, running with the built-in emulator, exporting to runnable ROM, etc.Why GB BASIC?

GB BASIC is programmable in a brand new BASIC dialect. The integrated assets editors are intuitive to use. You can generate real ROMs and play on any GB emulator or hardware.

GB BASIC compiles fast

GB BASIC generates ROMs for various mappers, devices and emulators
Features
Programmable in BASIC, an easy to learn and fun to use programming language

Easy to use API for graphics, input, audio, and other facilities

Built-in libraries for scene, actor, controllers, GUI

Built-in libraries for collision detection, persistence, RTC, etc.

Extension feature including mouse & touch, shell command, debugging, etc.

Handy tools for editing tiles, map, scene, actor, font, sound, etc.

Project can be exported into real ROM

Dozens of example projects
Specs
CPU: 4.19MHz/8.38MHz for classic/colored respectively

Threads: up to 16 concurrent execution contexts

Display: 160x144px

Code: BASIC, supports multiple source pages

Gamepad: 8 buttons (D-Pad + A/B + Select/Start)

Mouse and touch: supported by extension

Tiles: up to 256 units per page

Map: up to 255 tiles in one dimension per page; two layers (graphics, attributes)

Sprite: supports 8x8 and 8x16 sprites

Scene: up to 255 tiles in one dimension per page; four layers (map, attributes, properties, actors)

Actor: up to 8x8 tiles per frame; up to 256 frames per page

Font: supports TrueType (.ttf) and bitmap-based (.png .jpg .bmp .tga); up to 16px; 1bpp or 2bpp

Audio: 4 channels; supports importing from JSON, VGM, WAV, FxHammer

Palette: 2bit (4 colors) per tile, palette of map and actor is configurable for colored device

GUI: supports label, progress bar, menu, etc.

Persistence: supported

RTC: supported

Serial port: supported
Programming Paradigms
Imperative paradigm
Non-structured programming

Concurrent processing approach


Declarative paradigm
Data driven approach