Extension: AD&D Options and House Rules

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Originally Posted by PaulChatterton

I'm using the 2E ruleset. Actually, when I create a campaign in FGU, I am offered two different 2E rulesets, but one gives an error when starting up a campaign. The other is the only ruleset where the AD&D Options and House Rules is offered so that's the one I'm using.

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As ZippeeJerred said, OSRIC gets you really close. I'd wager that your best bet is to probably use OSRIC in FG rather than 2E. The OSRIC ruleset is free and it's based on 2E. It removes several things that 1E players don't normally use and corrects some other things for 1E play. You can add the reference materials for a full experience. And, you can use this extension if you want further control over options. The extension is designed to apply the most-used defaults for either 1E (OSRIC) or 2E, so you'd only need to adjust what you want. All are free of cost and in the Forge:

The ruleset (which I developed)
OSRIC Ruleset

The reference materials (by First Edition Society)
OSRIC Reference Materials

The extension link (also by me and just in case it's useful for anyone reading this later)
AD&D Options and House Rules Extension

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Originally Posted by Doomsword

They did a lot of this out of an abundance of caution, as I understand it. AD&D had never really been brought under the OGL to the extent that they did it. That's why you'll find a bunch of things that are slightly different or omitted altogether. They didn't want to infringe on things that may have been considered IP.

Regarding the XP tables, that's one such example. It comes from the reference manual, so there's not much to do in the ruleset or extension. I might be able to find a way around that; never tried and it would not match what's in the reference so it would probably confuse people. I think I told somebody up-thread how I'd go about modifying the values in the reference manuals, though.

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Now I know how to change the XP tables, I no longer have a problem with the values being different by default. It's a bit of a pain having to change them all manually but it's something that only has to be done once. The only issues I have left are with the attack matrices simply because it doesn't seem to be possible to modify them like it is with everything else that's different to 1e.

1. To be true to 1e, the attack matrices stop should stop changing after a certain level depending on the class. For fighters, though, they seem to keep going.
2. When adding new levels about those present by default, the attack matrices seem to be all 20s across the board.

I've even created the monk class now.

I made the matrices editable a long time ago, but I do see that it no longer works the way I expected it to. I don't remember why I originally did it. I think it had something to do with OSRIC. I'll take a look at that and the all-20 matrix when leveling up. I'll put the other class matrices and saving throws in, too.

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Originally Posted by Doomsword

I made the matrices editable a long time ago, but I do see that it no longer works the way I expected it to. I don't remember why I originally did it. I think it had something to do with OSRIC. I'll take a look at that and the all-20 matrix when leveling up. I'll put the other class matrices and saving throws in, too.

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Just to clarify, I can edit a level for a class and change the attack matrix, but it doesn't get saved. If I close down the Class window and then go back into it, the matrix has gone back to what it was originally.

The all-20 issue is not on levelling up. I was trying to extend Cleric levels all the way to 29, which is where the spell levels table ends in the 1e Players Handbook, from 24 which is what is there by default, by clicking on the + for levels and defining new levels. It's in the level configuration that the matrix is showing all 20s.

Yeah, I'm sure you're right.

I'm not worried about some of the minor changes such as the XP tables, makes very little difference in game.

However I'm sure there are those who would like the additional classes and those from UA as well as the extra spells - the revised thief skill table from UA would be nice too.

I suspect OSRIC Unearthed would need to be another overlay extension though.

I'd happily support that if required.

Hello,
Since we're talking about attack matrices, I've noticed that they don't follow the rule.

Let me remind you what the rules are:

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A quick glance at the progression of numbers on the COMBAT TABLES will reveal that 20 is repeated. This reflects the fact that a 20 indicates a "perfect" hit. lt also incidentally helps to assure that opponents with high armor class value are not "hit proof" in most cases. Should any DM find that this system of fends his or her sensibilities, the following modification is suggested: Consider the repeated 20 as a perfectly-aimed attack which does not gain any benefit from strength or magical properties of any sort - spell, missile, or weapon. That is, the 20 must be attained by a roll of natural 20. All bonuses accrue only up to and including a total of 20, so that even if a character attacked with a bonus for strength of +3 and a +3 magic sword he or she would have to roll a natural 20 in order to score a hit on any creature normally hit by the second or successive repetitions of 20, i.e. the bonus (+3 in the example) could not exceed a total score of 20 unless an actual 20 is rolled. Thus, the COMBAT TABLES could be amended to read like this:

21 (natural 20 plus at least + 1 bonus)
20 (natural)
20 (natural)
20 (naturai)
20 (natural)
20 (natural)
20 (die result + bonuses to total)
19 (die result + bonuses to total)

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In my screenshot, you can see that Brenton (level 1 thief) hits AC -4 with the 18 (+2 =20) whereas according to the rules he only hits AC 1.

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Originally Posted by Vackipleur

Hello,
Since we're talking about attack matrices, I've noticed that they don't follow the rule.

Let me remind you what the rules are:



In my screenshot, you can see that Brenton (level 1 thief) hits AC -4 with the 18 (+2 =20) whereas according to the rules he only hits AC 1.

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Yes, I'm happy to see people noticing the differences between 1E and OSRIC. OSRIC has no repeating 20s. I'm going to make that optional when using OSRIC or 2E, as well as this extension. I want to keep the OSRIC ruleset "pure", so this will be available when using the extension. I'll get this done ASAP.

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Originally Posted by PaulChatterton

Just to clarify, I can edit a level for a class and change the attack matrix, but it doesn't get saved. If I close down the Class window and then go back into it, the matrix has gone back to what it was originally.

The all-20 issue is not on levelling up. I was trying to extend Cleric levels all the way to 29, which is where the spell levels table ends in the 1e Players Handbook, from 24 which is what is there by default, by clicking on the + for levels and defining new levels. It's in the level configuration that the matrix is showing all 20s.

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Thanks for the clarification. I discovered a separate issue, then, while testing 2E. Sometimes the matrix gets provided with all 20s when a PC levels up. Not sure about the specifics yet, but it should be an easy fix.
Regarding matrix assignment to characters beyond OSRIC's maximum designated level, the data doesn't exist (yet) and it's providing all 20s by default. I'll get the data entry done for matrices.
This should be fixed soon. Thanks for your patience and the reports.

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Originally Posted by ZippeeJerred

Yeah, I'm sure you're right.

I'm not worried about some of the minor changes such as the XP tables, makes very little difference in game.

However I'm sure there are those who would like the additional classes and those from UA as well as the extra spells - the revised thief skill table from UA would be nice too.

I suspect OSRIC Unearthed would need to be another overlay extension though.

I'd happily support that if required.

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Yes. Thanks. It needs a reference manual for a bunch of this stuff. That could be released as something that uses the OSRIC license. But I've been working for several months on an RPG that hews more closely to 1e than OSRIC does. I'll probably release it under that. No promises on when that might be done, but reference stuff like level xp thresholds, spells, and classes need to be in a reference work. Thief skill modifications for armor would belong in the extension and I agree that it should be done.

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Originally Posted by Vackipleur

Hello,
Since we're talking about attack matrices, I've noticed that they don't follow the rule.

Let me remind you what the rules are:



In my screenshot, you can see that Brenton (level 1 thief) hits AC -4 with the 18 (+2 =20) whereas according to the rules he only hits AC 1.

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That's odd because my game (OSRIC & AD&D-OHR as the only extensions) does include the multiple zeroes as per the screenshot attached

Another one for the list - the attack matrices are incorrect for mages/illusionists level 11+ compared with the 1e DMG.

I've also noted that the automatic addition for ranger damage vs. giant class doesn't appear to be limited to melee only, and there's no way to turn it off for ranged attacks except by removing it entirely. I plan just to add an extra damage row to individual weapons for rangers, but that's something I'll need to do separately for a character once it is created.

By the way, while on the subject of attack rolls, what about attack modifiers for weapons vs. AC? I guess it would be pretty difficult to implement but perhaps it's something to think about for the distant future.

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Originally Posted by ZippeeJerred

That's odd because my game (OSRIC & AD&D-OHR as the only extensions) does include the multiple zeroes as per the screenshot attached

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Of course, you're right. I was responding too quickly and being generally stupid and not clear in my response. Yes, I can make this natural 20 thing an option without too much work, I think. Thanks for correcting my oversight.

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Originally Posted by PaulChatterton

Another one for the list - the attack matrices are incorrect for mages/illusionists level 11+ compared with the 1e DMG.

I've also noted that the automatic addition for ranger damage vs. giant class doesn't appear to be limited to melee only, and there's no way to turn it off for ranged attacks except by removing it entirely. I plan just to add an extra damage row to individual weapons for rangers, but that's something I'll need to do separately for a character once it is created.

By the way, while on the subject of attack rolls, what about attack modifiers for weapons vs. AC? I guess it would be pretty difficult to implement but perhaps it's something to think about for the distant future.

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I'll take a look and see what I can come up with. I need to fix the most glaring things that we've discussed, first. I should have some time today.

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Originally Posted by Doomsword

Of course, you're right. I was responding too quickly and being generally stupid and not clear in my response. Yes, I can make this natural 20 thing an option without too much work, I think. Thanks for correcting my oversight.

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Just booted up a test game using 2E and ADD-OHR only (not OSRIC and no other extensions) - there's a system toggle in Options called System: 1E/OSRIC data (it requires a restart when changing)

When that is set to ON all the attack matrixes are set to 20 against all AC - no variation, need a 20 to hit AC-10, need a 20 to hit AC +8
When that is set to OFF the attack matrix is set off of the 2E THAC0 (as you'd expect)

Not sure what that means but it wasn't the result I was expecting and certainly isn't working right!

Thank you. I'm looking into this stuff now...

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Originally Posted by PaulChatterton

I've also noted that the automatic addition for ranger damage vs. giant class doesn't appear to be limited to melee only, and there's no way to turn it off for ranged attacks except by removing it entirely. I plan just to add an extra damage row to individual weapons for rangers, but that's something I'll need to do separately for a character once it is created.

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Hello,
You can add a descriptor to your damage effect so that it's only a melee bonus.
For example: DMG: 2 melee

Just wanted to let everyone know that I have a fairly major update coming (as soon as I can finish the thing) that addresses a lot of issues and should make things easier and better for you and me. You can probably expect it within a day or two (hopefully).

I am just wondering if you could perhaps adjust the sheet itself to account for the substats? its really the only thing missing to really record a players option character properly

This thread seems to have gone quiet for a while so I hope you are still out there, Doomsword.

How do I remove Criticals? 1E doesn't have Criticals. I think there's a setting to turn off additional damage, but 20 isn't even an automatic hit in 1E.

I assume also that the rule that says that the first 20 on the to hit matrix can be achieved by roll + bonuses but the other 5 require a natural 20, hasn't been implemented.

[Also posted in the OSRIC thread]

I've nearly finished implementing my solution for calculating attack modifiers for different weapons against different armor types based on equipped effects.

Shield
Attachment 64084
ATS is a custom tag indicating a shield is equipped
ATA is a custom tag indicating that armor of some type is equipped, provided by Armor effects
AT9 is a custom tag indicating no armor with a shield

Armor, e.g. Plate
Attachment 64085
ATA is a custom tag indicating that armor of some type is equipped
ATS is a custom tag indicating that a shield is equipped, provided by Shield effects
AT2 is a custom tag indicating plate and shield
AT3 is a custom tag indicating plate without shield

Weapon, e.g. Staff
Attachment 64086
First line is the modifier for no armor or shield, for which no AT10 tag can be created as there is nothing equipped to set the effect. All the other modifiers are changed to reflect this.
AT2, AT3, etc., are custom flags indicating the different armor types
ActionOnly is a qualifier that can be set when defining the effect but doesn't appear to be reflected on the Combat Tracker.

I have used the Untrue Effect extension to get the IFN: tag by modifying the extension.xml to allow all rulesets. Given that everything works if the defender's weapon is unequipped and IFN is not used in the weapon equipped effects, I have assumed that this is not the problem.

This all seems to work except for a significant performance issue; if the defender's weapon is equipped when the attacker rolls to attack, FGU freezes. If the defender's weapon is unequipped, it works fine. This appears to be strange because the defender's weapon should not be relevant. I have tried disabling the effects on the defender's weapon individually to examine the problem further. With one or two effects enabled, it all works fine, but once three or more are enabled the result takes longer to come back (about 5 seconds for 3, maybe 20 - 30 seconds for 4 and longer than I waited beyond that).


I'd hope that the ActionOnly qualifier would fix the problem, as it would be ignored when the defender is not the one taking an action. However, it looks like the ActionOnly qualifier is doesn't do anything as it's not reflected in the Combat Tracker.

Any ideas how to get around this, other than to ask the players to unequip there weapons after every attack?

Just wanted to quickly touch base and let you know that, yes, I'm still around and still have updates in the works. I should be able to make progress this week, having just finished an RPG product I was working on (well, finished enough for now). I'll look through what you've posted and get back with you soon.

The extension is called AD&D Options and House Rules, it now creates an error, especially with thieves skills. This is what the error shows, members of Fantasy Grounds told me to come here and ask, and show you what the error looks like, thank you for your help and time.

[ERROR] window: no vertical anchor defined for control (stat) in windowclass (char_skill_editor_main) for all the thief skills?

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Originally Posted by WytchKraft

The extension is called AD&D Options and House Rules, it now creates an error, especially with thieves skills. This is what the error shows, members of Fantasy Grounds told me to come here and ask, and show you what the error looks like, thank you for your help and time.

[ERROR] window: no vertical anchor defined for control (stat) in windowclass (char_skill_editor_main) for all the thief skills?

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Welcome to the FG forums! When reporting errors with an extension please report in the forum thread for the extension - this will get the direct attention of the extension developer and get you a more efficient resolution. I've moved this post to the extension related thread.

Thank you, Trenloe. I'm on it, just been swamped in releasing RPG materials. For anyone else with problems related to my stuff, feel free to hit me up on Discord also (link in sig). That helps me get to these faster, and I'll update the thread as necessary.

The problematic area that is causing the error WytchKraft is reporting on is related to <template name="cycler_skill_type">
in tempalte_char_adnd.xml

I toyed with adding anchors but ultimately gave up as it was causing alignment issues in other areas of the character sheet and/or throwing more errors..
I commented out the template section as I am not using the addition of d6 provided by the addon in that section for my game and it isn't dropping errors any longer.

Very helpful, thank you. Still haven't dug into it to see where it's at after updates to the stuff it depends on, but that's tonight's mission. Updates to this can break functionality while used with my OSRIC ruleset. That makes it to where I can't just update this without considering OSRIC. Best effort incoming....

I just pushed out an update for this. It should fix the bugs that have been reported and a couple of others that I found. Check your options after updating and make sure they're set the way you want. Lots of stuff was improved in options handling, data updates, and matrices for anyone using those. It's been brought into parity with CoreRPG and 2E updates, where necessary.

Please let me know if you find any issues or if there are unresolved bugs. There's stuff in here that I'm working on that I have yet to release. The bugs that the update fixes were big enough to warrant getting this out ASAP. Thanks for your patience. I have tested several things with both 2E and OSRIC, so I expect the update to work reasonably well.

Currently working on getting OSRIC updates out for those who use this extension with that ruleset.

@Paul, can you give me a rundown of everything you want to see implemented? Some of it is done/fixed already. I have the crit fixed in unreleased OSRIC, and need to do the same with the extension. I can have that out tomorrow. I'd like to address other issues, as well, but they're hard to keep track of. Thank you.

PS - this goes for anyone else, as well.

Getting some errors trying to attack from the COmbat Tracker with a Monster. Using the 1E option for hit tables and not OSRIC. PC was targeted by the monster. Loaded 1e/2e ruleset and your options extension.
I can send the whole file, but here's the last 2 lines:
[5/9/2025 7:38:31 PM] s'ActorManager.getTypeAndNode/getTypeAndNodeName - DEPRECATED - 2025-04-22 - Use ActorManager.isPC/isRecordType/getCreatureNode/getCTNode'
[5/9/2025 7:38:33 PM] [ERROR] Script execution error: [string "..ons and House Rules:..mbat_adnd_op_hr.lua"]:811: attempt to perform arithmetic on a nil value

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Originally Posted by georgelaiacona111

Getting some errors trying to attack from the COmbat Tracker with a Monster. Using the 1E option for hit tables and not OSRIC. PC was targeted by the monster. Loaded 1e/2e ruleset and your options extension.
I can send the whole file, but here's the last 2 lines:
[5/9/2025 7:38:31 PM] s'ActorManager.getTypeAndNode/getTypeAndNodeName - DEPRECATED - 2025-04-22 - Use ActorManager.isPC/isRecordType/getCreatureNode/getCTNode'
[5/9/2025 7:38:33 PM] [ERROR] Script execution error: [string "..ons and House Rules:..mbat_adnd_op_hr.lua"]:811: attempt to perform arithmetic on a nil value

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Thank you. Found a typo in there. Should be fixed after you update again.

Acknowledged. 6th level Magic User's matrix is now all 8's, but I can hand edit that on my own in the meantime. I'll update with anything further I find. Thanks again for this extension.

Sure thing. I'll check the MU thing

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Originally Posted by georgelaiacona111

Acknowledged. 6th level Magic User's matrix is now all 8's, but I can hand edit that on my own in the meantime. I'll update with anything further I find. Thanks again for this extension.

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I was able to reproduce this and found the error. It was a change in 2E that didn't exist when I worked on this last. It's corrected, so other people shouldn't experience it. I've some chars with the problem, so I'll work on getting an update out that addresses it for chars that may have a messed-up matrix.

Uploaded a new version. M-Us should be completely fixed. Internal Stuff. Added option to "yes or no" automatic misses on rolls of 1 (only for 2E use). Removed the crit message if crits are turned off (OSRIC and 2E use)

Thank you for your work and prompt attention.
Crit? What is this Crit thing you speak of?:D

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Originally Posted by georgelaiacona111

Thank you for your work and prompt attention.
Crit? What is this Crit thing you speak of?:D

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It's all the rage for the 2Eplussers

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Originally Posted by Doomsword

Uploaded a new version. M-Us should be completely fixed. Internal Stuff. Added option to "yes or no" automatic misses on rolls of 1 (only for 2E use). Removed the crit message if crits are turned off (OSRIC and 2E use)

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Why is the automatic miss Yes/No for 2E only? 1E should have no automatic misses either.

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Originally Posted by Doomsword

@Paul, can you give me a rundown of everything you want to see implemented? Some of it is done/fixed already. I have the crit fixed in unreleased OSRIC, and need to do the same with the extension. I can have that out tomorrow. I'd like to address other issues, as well, but they're hard to keep track of. Thank you.

PS - this goes for anyone else, as well.

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I've tried to contact you through Discord about the one show-stopper issue I have currently, to do with the 1E hit modifiers by weapon and armor type. I thought it might be easier to demonstrate to you by sharing my screen there.

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Originally Posted by PaulChatterton

Why is the automatic miss Yes/No for 2E only? 1E should have no automatic misses either.

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Because OSRIC (even with the extension) should do that by default and offer no ability to change it. If you're running 2E ruleset, then you just turn it off.

I'm happy to Discord it out with you. Maybe I missed your message. I got lots of people talking to me all the time. I'll look, but feel free to PM me your Discord id as well.

Tested. Using 1E matrices. Cleric and Fighter matrix is correct. Thieves and Magic Users is not. All 20s or all 11s. Cannot edit them on the character sheet to change. Monsters also appears correct. Or, at least trying them out with a couple of low-level characters and a Bugbear gets me the stated results. [Critical Hit] also shows in the chat window when a 20 is rolled, though this is not really an issue. Damage: Critical hit type set to "none."