Roll20 Wiki

RPGMaster APIs

The RPGMaster suite of APIs is a set of APIs created primarily for enhancing AD&D 2E gameplay, made by Richard E. The APIs are compatible with the Advanced 2nd Edition character sheet.

Some of the APIs can be used with other sheets.

Forum

RPGMaster APIs for AD&D 2E - main forum thread (Old RPGMaster APIs for AD&D 2E - old frozen forum thread)

RPGMaster Intro video 1 14min (Updated 10-04-23) How to load and initialise the APIs
RPGMaster Intro video 2 36min (Updated 10-04-23) Setting up a Token & Character Sheet for use with the APIs
RPGMaster Intro video 2a 6min (Updated 10-04-23) Setting the token bar & circle mappings as you want
RPGMaster Intro video 3 12min (valid for v1.4.05) Introduction to the standard Token Action buttons
RPGMaster Intro video 4 16min (valid for v1.4.05) Doing Initiative with RPGMaster APIs
RPGMaster Intro video 5 22min (Updated 10-04-23) Attacking with melee & ranged weapons and ammo
RPGMaster Intro video 6 21min (valid for v1.4.05) Obtaining & using Magic Items
RPGMaster Intro video 7 16min (Updated 10-04-23) Other Actions such as Saving Throws and Light sources
RPGMaster Intro video 8 25min Setting up Wizards, and casting simple spells
RPGMaster Intro video 9 23min Setting up Priests, and casting more complex spells
RPGMaster Intro video 10 19min Even more complex spells with duration and system-wide effects
RPGMaster Intro video 11 22min Powers and power-like effects
RPGMaster Intro video 12 23min Spell-Storing & Powerful magic items, use & creation
RPGMaster Intro video 13 13min Setting up simple Monsters
RPGMaster Intro video 14 23min Complex Monsters with spells, powers and more than 2 hands
RPGMaster Intro video 15 17min Introduction to the RPGMaster databases
RPGMaster Intro video 16 18min A bit more detail about the spells databases and how to create your own Spells
RPGMaster Intro video 17 30min More detail about the Magic Items databases and how to create your own Items
RPGMaster Intro video 18 32min The Weapons & Ammo databases and how to create your own Melee & Ranged Weapons and Ammo

APIs

General

These have utility to be used with sheets other than just the Advanced 2nd Edition‎-sheet

Script:InitMaster -- Manages initiative rolls and priorities for Player Characters, NPCs and Creatures.
Script:RoundMaster -- Extends the functionality of the t Turn Tracker capability. Based on the old TrackerJacker API, extended to support Effect Macros triggered when statuses are added, exist on, or are removed from tokens. Effect Macros are user programmable and can do anything Roll20 or added APIs can do.
Script:RPGMaster Library -- Holds all RPG-version specific data, rulesets and processing for the RPGMaster series of APIs, but also provides Roll Templates, Character Sheet table management functions, database management functions and other useful functions that can be used by API authors and others (Roll Templates are usable from macros) that are applicable to unsupported RPGs.

AD&D 2E only

Script:RPGMaster_Suite -- It manages the initialisation of a Campaign to use the RPGMaster APIs, communication and command syntax updates between the APIs and, most importantly for the DM, easy menu-driven setup of Tokens and Character Sheets to work with the APIs.
Script:AttackMaster -- provides functions to manage weapons, armour & shields, including taking weapons in hand and using them to attack. It uses standard AD&D 2e rules to the full extent
Script:MagicMaster -- provides functions to manage all types of magic, including Wizard & Priest spell use and effects; Character, NPC & Monster Powers; and discovery, looting, use and cursing of Magic Items.

Databases

RPGMaster Character Sheet setup - RPGMaster Character Sheet setup Wiki page
RPGMaster Class/Race DB - RPGMaster Class & Race database Wiki page
RPGMaster Attack Templates DB - RPGMaster Attacks database Wiki page
RPGMaster Weapons & Armour DB - RPGMaster Weapon, Ammo & Armour databases Wiki page
RPGMaster Magic Spells & Items DB - RPGMaster Spells & Magic Items databases Wiki page

Installation for AD&D 2E

Note: It is highly recommended that you create a copy of your campaign before installing these (or any other) APIs, as APIs can cause major issues if not set up correctly or they contain bugs. This also means you can play around with use of the RPGMaster APIs in a safe environment - just try out all the features which are mostly fully available via easily accessible on-screen buttons. Nothing should break as a result of this (but no guarantees!)

1. Load CommandMaster from the One-Click install menu: this will load all the other relevant APIs, including the ChatSetAttr and Tokenmod APIs which are needed for full operation. Check that all the APIs (or at least the ones you want) have loaded. RPGMaster Library AD+D2e must be loaded! Please ensure this is the case! If any of them don't load for some reason, they are all also individually available on the One-Click install menu.

2. Use the command !cmd --initialise which will create a number of Player Macros visible on the Macro menu (accessed via the "3 bulleted lines" icon at the top of the Chat Window).

3. Go to the Player Macro menu described in 2 & tick the boxes for all the macros to appear In bar, and then tick the box for Show Macro Quick Bar. Buttons to access the macros set up will appear on your screen (normally at the bottom of the Roll20 map window).

4. Select one or more tokens on the map window that represent Characters, NPCs or Monsters and select the Token-Setup button. A menu will appear in the Chat Window showing stuff that can be done with the tokens and their linked character sheets to set them up for use with the RPGMaster APIs.

5. Add Magic Items, Weapons, Armour and more to the Character Sheets represented by the selected tokens using the Add-Items button. These items are different from just listing them on the sheet, as they are active and many actually have effects in-game when used, such as setting attack and damage bonuses for set durations, speeding up or slowing down Initiatives rolled (i.e. Haste & Slow effects), granting Powers and storing Spells, etc.