Dynamic RPG Worlds

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Core Design Principles

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Designer-First Approach

No hardcoded values or hidden systems in C++. Extensive Project Settings integration and full Blueprint exposure so designers have final say.

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Multiplayer Ready from Day One

All systems designed with client-server architecture in mind. Replication, Server RPCs, Client RPCs, and prediction where appropriate.

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GAS-Centric Architecture

The Gameplay Ability System is the foundation of every gameplay mechanic. Attributes, abilities, effects, and tags drive all systems.

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Plugin-Only Architecture

All code lives in plugin modules — nothing in project source. Clean integration into any existing project without source modifications.

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FAB Marketplace Standards

Strict adherence to Epic's API requirements. No deprecated code — only modern UE 5.7+ native implementations.

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Dependency Layer Architecture

The plugin follows a strict layered dependency model. Dependencies flow upward only — lower layers never depend on higher layers.

Layer 1 — Foundation

WCGASCore

Zero plugin dependencies. Core GAS infrastructure — 150-slot generic AttributeSet, tag-to-slot runtime registry, ability definitions with fragment system, extended ASC, all native gameplay tags in a single centralized file (WCGameplayTags.h), piecewise formula attribute modification system with 12 formula types.

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Layer 2 — Features

WCInput · WCInteraction · WCInventory · WCCombat · WCUIFramework · WCGASAlly · WCDynamicSociety

Each is a self-contained gameplay system depending only on WCGASCore (and optionally each other). Feature modules provide discrete, ship-ready functionality and never depend on the integration layer above them.

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Layer 3 — Integration

DynamicRPGWorlds

Assembles feature modules into final game framework classes — PlayerState, PlayerCharacter, GameMode, locomotion, camera. This is where cross-module wiring happens. New feature modules should never depend on this layer.

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Module Status

WC GAS Core

150-slot generic AttributeSet, tag-to-slot runtime registry, fragment-based ability system, extended ASC with definition API, 12-formula piecewise attribute modification

Complete

WC Input

Handler-based input routing, combo detection, input buffering, context switching — all exposed to Blueprint and Project Settings

Complete

WC Interaction

8 interaction types (Instant, Hold, Ability, Sequence, Proximity, RadialMenu, ContextSensitive, Custom), multi-slot cooperative interactions, 30+ delegates

Complete

WC Inventory

Fragment-based items (16 fragment types), slot/jigsaw-grid containers, equipment + set bonuses, crafting with catalysts, weighted loot tables, multi-currency wallet, atomic transactions

Complete

WC Combat

Melee (unarmed, 1H, 2H, dual-wield), ranged (bows, crossbows, firearms), magic (free-cast, catalyst, weapon-bound), throwables, combo chains, equipment-driven combat styles, State Tree ability flows

Complete

WC UI Framework

HUD widget, crosshair system, hit markers, target tinting, damage numbers — built on CommonUI and MVVM

Complete

WC GAS Ally

Heritage system, status effects, skill trees, damage/healing pipeline, factions, AI behavior tree integration

Integrated

WC Dynamic Society

Calendar system, seasons, factions, NPC identity and schedules, world data — all data-driven

Integrated

WC Audio Suite

Dynamic music with vertical stem layering, tag-driven state machine, area audio blending, reverb zones, GAS binding, Narrative Pro dialogue ducking

In Progress

WC Realms

Level streaming, world state persistence, location discovery, fast travel, fog of war

In Progress

WC Knowledge Suite

Achievements, lore codex, bestiary, tutorials, discovery tracking

Phase 3

WC Stories

Dialogue trees, quest system, objective tracking, NPC relationships

Phase 4

WC AI

AI controllers, behavior trees, perception, daily routines, combat AI

Phase 4

WC Save System

Save serialization, multiple slots, cloud saves, autosave, multiplayer state

Phase 6

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Development Roadmap

1

Phase 1 — Core Framework

Complete

WC Interaction

WC Inventory

WC GAS Ally (integrated)

WC Combat

WC Input

2

Phase 2 — World & Presentation

Currently Active

WC UI Framework (done)

WC Audio Suite (in progress)

WC Realms (in progress)

3

Phase 3 — Progression

Planned

WC Knowledge Suite (Achievements, Lore, Bestiary, Tutorials)

4

Phase 4 — Narrative & AI

Planned

WC Stories (Dialogue Trees, Quest System, Objectives)

WC AI (Controllers, Behavior Trees, Perception, Daily Routines)

5

Phase 5 — Integration

Planned

Full WCGASAlly & WCDynamicSociety integration into DynamicRPGWorlds

WC Save System (Serialization, Slots, Cloud Saves, Autosave)

6

Phase 6 — Polish & Marketplace

Planned

Documentation, Quick Start Guide, Example Project

FAB Marketplace Submission

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Technical Architecture

Pattern	Implementation
Designer-First	No hardcoded values. All configuration exposed to Project Settings and Blueprint. Designers have final say without touching C++.
Plugin-Only	All code lives in plugin modules — nothing in project source. Drop into any existing project without source modification.
GAS-Centric	Every gameplay mechanic built on Gameplay Abilities, Attributes, Effects, and Tags. WCGASCore is the true foundation with zero plugin dependencies.
Fragment System	Both abilities (UWCAbilityFragment) and items (UWCItemFragment) use composable fragment arrays. Add behaviors without subclassing.
Data Asset Pipeline	Attribute definitions, ability definitions, item definitions, loot tables, recipes — all Primary Data Assets. Async loadable, designer-configurable.
Multiplayer-Ready	Every system designed client-server from day one. TMaps are never used for replicated state (TArray of structs instead).
Gameplay Tags Everywhere	All native tags in a single centralized file (WCGameplayTags.h). Tag format: WC.[Module].[Category].[Subcategory]. Registered at static init before any CDO.
AI / Data Separation	WC AI handles behavior trees and decision-making. WCDynamicSociety manages NPC identity and world data. Combat abilities work for both players and AI identically.

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