NES development tool made with Python and Lua

Last update: Aug 19, 2022

Overview

NES Builder

NES development and romhacking tool made with Python and Lua

Current Stage: Alpha

Features

Open source
"Build" project, which exports various items and assembles project.asm if it exists.
Palette editor
Import CHR banks from .chr, .png, .png (nesmaker).
Export CHR banks to .png with chosen palette.
Metatile creator
plugin system (Lua/Python)
Integrated custom 6502 assembler (sdasm)

Installing

Download the latest release. The NESBuilder_Setup.exe installer will allow you to download and install the latest compoents:

NESBuilder Executable
NESBuilder Source
Installer Source
Start Menu Shortcuts

Building / Running From Source

Requirements:

Windows
Python 3

Python packages: You can use "install dependencies.bat" to install these. Make sure you run "as administrator".

lupa
pyinstaller
pillow
numpy
PyQt5
QScintilla

Installation Issues

Issue: In Windows 10, when installing Python 3 from the Windows store, importing PyQt5.QtWidgets causes an error: "ImportError: DLL load failed: The specified module could not be found." Solution: None yet :(

Issue: When pip attempts to install lupa, there are many errors, and one of them near the bottom says "error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/" Solution: using cholatey: choco install visualcpp-build-tools --version=14.0.25420.1 Installing this appeared to hang, but it actually required pressing enter. It's possible the latest version might work instead, and other installations untested.

Issue: Unable to get NESBuilder working form source. Workaround: If you can run the binary NESBuilder.exe you can pass a parameter to run the latest version of the script. "NESBuilder.exe main.lua" The binary won't be updated as often, and this may not work or cause errors, but it's possible you can still try out features without waiting for a new binary.

Plugins

Plugins are Lua scripts, but can also import Python scripts.

See sample plugins for more information.

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Releases(v2021.4.8-alpha)

v2021.4.8-alpha(Apr 8, 2021)

NESBuilder_Setup.exe will download the latest installer and run it, so you can keep using this to update. Note: Due to the nature of how this works, both the installer and program itself will likely trigger antivirus warnings.
Source code(tar.gz)
Source code(zip)
NESBuilder_Setup.exe(47.50 KB)
current(Aug 15, 2020)

*** This version does not run without administrator privileges. Please use latest release instead.

NESBuilder_Setup.exe will download the latest installer and run it, so you can keep using this to update. Note: Due to the nature of how this works, both the installer and program itself will likely trigger antivirus warnings.
Source code(tar.gz)
Source code(zip)
NESBuilder_Setup.exe(47.50 KB)
v2020.8.14-alpha(Aug 14, 2020)

EDIT: This release no longer works and has been removed. Please use latest release instead.

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