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plc-system

Document the Pattern Load Cue system's binary format and PlcParser API for Sonic games.

6|1|Updated Jan 16, 2013
Search Tags:#game development#graphics#asset loading#reverse engineering#sonic#plc system
One-click install
npx skills add https://github.com/jamesj999/OpenGGF --skill plc-system
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: plc-system
Source: https://github.com/jamesj999/OpenGGF/tree/main/.agents/skills/plc-system
Command: npx skills add https://github.com/jamesj999/OpenGGF --skill plc-system

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a comprehensive reference for the Pattern Load Cue (PLC) system used across multiple Sonic games, enabling accurate understanding and integration of game assets.

Core Features & Use Cases

  • Shared Binary Format: Details the structure of the PLC table and per-PLC data blocks.
  • Per-Game Integration: Explains how PLCs are handled in Sonic 1, 2, and 3K, including specific addresses and parsing methods.
  • PlcParser API: Documents the utility for parsing PLC definitions from ROM data.
  • Use Case: Developers working on Sonic game preservation or fan projects can use this reference to understand how graphical assets are loaded and managed, facilitating accurate reimplementations or modding efforts.

Quick Start

Consult the PlcParser API documentation within this skill to understand how to parse a PLC definition from a given ROM address and PLC ID.

Frequently Asked Questions about plc-system

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is a Pattern Load Cue system in Sonic games?▼

A Pattern Load Cue (PLC) system manages graphical asset loading in Sonic games. It uses a shared binary format consisting of PLC tables and data blocks to define how sprites are parsed and transferred into VRAM.

How do I parse PLC data from a Sonic ROM?▼

You can parse PLC data from a Sonic ROM using the PlcParser API. It reads PLC definitions from specific ROM addresses based on a PLC ID to extract asset loading instructions and VRAM destination calculations.

Are PLC structures the same across Sonic 1, 2, and 3K?▼

The PLC system uses a shared binary format across Sonic 1, 2, and 3K, but integration points differ. Each game has specific ROM addresses and parsing methods for locating and processing PLC tables.

How does the PLC system calculate VRAM destinations?▼

The PLC system calculates VRAM destinations using data stored within per-PLC data blocks. These blocks contain binary format instructions that the PlcParser API interprets to map assets into video RAM.

Can I use PLC references for Sonic game modding projects?▼

Yes, PLC references are designed for game reimplementation and modding projects. They provide the necessary binary format details and per-game integration points to accurately load and manage graphical assets.

What do I need to understand before parsing Sonic PLC tables?▼

You need a basic understanding of the Sonic ROM binary format and hex addresses. The PLC system requires referencing specific ROM addresses for Sonic 1, 2, or 3K to successfully parse asset definitions.

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