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Structure & Nested Loops

Resolution, Procedure, and Structure

๐—ฅ๐—ฒ๐˜€๐—ผ๐—น๐˜‚๐˜๐—ถ๐—ผ๐—ป mechanics answer questions about the game world. โ€œCan I pick this lock?โ€ โ€œIf I arm-wrestle this bugbear, who wins?โ€ The story presents a question and we turn to dice and numbers to give us an answer. We might do this because thereโ€™s a difference of opinion over how things should play out, or because we want to be surprised, or because we want things to be fair or correct in some way. These mechanics are reactive - they wait for play to pose a question and then provide tools to generate an answer.

๐—ฃ๐—ฟ๐—ผ๐—ฐ๐—ฒ๐—ฑ๐˜‚๐—ฟ๐—ฎ๐—น mechanics are pro-active. They tell us what to do next. Frequently, they raise questions rather than answer them. The combat round is procedural: It tells each player when to take their turn and provides concrete, transparent, repeatable actions - make an attack, cast a spell, take cover - with consistent resolution mechanics. The dungeon turn, with its random encounters and resource depletion, is procedural. Domain rules, with income and upkeep, patrols and incursions, is procedural.

๐—ฆ๐˜๐—ฟ๐˜‚๐—ฐ๐˜๐˜‚๐—ฟ๐—ฎ๐—น mechanics are what you get when you interconnect mechanics with one another to resolve the questions that arise through play and create meaningful consequences for mechanical actions.

For example, dungeon crawling combines the dungeon turn, downtime and encounters to create a structure with a resource/risk management gameplay. The PCs have just been in tough fight; nobody has died but their hp, spells and healing resources are significantly depleted. If they can instantly go home and rest then this is no consequence, but because there are random encounters being rolled on the way out of the dungeon they risk getting into a fight they arenโ€™t prepared for.

In A Cloud, Bones of Steel

Structures are important because decisions in games should be meaningful. DM fiat is an essential part of what makes FRP fun, but too much of it can erode meaning. Gamers are on the whole not ludic calvinists, they want to fall or prosper because of their decisions, not because the DM preordained their victory or defeat.

So we also need mechanics - dice, rules, tables, statistics, and previously established facts about the game world. When mechanics are separated from one another by the 'cloud' of make-believe, and form little islands of dice and numbers, they tend to lose their meaning.

In the case described above, of the party finishing a fight in poor shape and seeking to leave the dungeon - many games would leave the decision as to whether they encounter wandering monsters on the way to DM fiat rather than procedural mechanics. In this case the PCs may have a lucky escape and get home to rest without an encounter, or they may find themselves in a desperate fight for their lives, but either way it will simply be because the DM decided to go easy on them, or decided to be mean to them. Thereโ€™s no longer a sense of being โ€˜luckyโ€™ or โ€˜unluckyโ€™, just one of being bullied or given a free ride.

The meaning of the tough fight is also diminished. If the players find themselves in a dangerous situation and have to parlay because they donโ€™t have the HP to survive another fight, because they made a poor tactical choice in the last battle, the PC can think to himself โ€œdarn, I lost that gold on bribes because I used the wrong spell.โ€ The decisions made in the combat arenโ€™t forgotten because they have a significance beyond that combat.

Thus connecting mechanics to mechanics through procedure and structure allows us to conduct meaning from one part of the game to another. We can build a circuit of meaning.

Nested Loops

Interconnected mechanics can form loops, like the combat round which begins and ends with initiative, and continues looping until nobody is willing or able to fight anymore. Loops are a useful kind of procedure because they let you use the same familiar mechanics over and over. Every combat round uses the same basic rules as every other combat round for the entire campaign.

The diagram below shows how different levels of procedure within a game can form interlocking structures and convey consequence and meaning. The loops from smallest to largest are:

These interconnected loops convey meaning downwards and consequences upwards. In a โ€œfor the want of a nailโ€ manner, whether you hit that goblin can mean the difference between dying a tragic hero in the final battle with your nemesis, and coming home to be crowned king.

Knowing that makes every little action in the dungeon matter - you care about hitting that goblin, not because youโ€™re thinking it could alter the final state of the campaign specifically, but because the world feels alive and responsive to your actions. (The DM has other tools to promote this sense of a living world, which weโ€™ll talk about later in the sections on storytelling and listening to your players.)

Consequences
โ–ฒโ•”โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—
โ”‚โ•‘ CAMPAIGN                                                                         โ•‘โ”
โ”‚โ•‘      Months, Years, Centuries                                                    โ•‘โ”‚
โ”‚โ•‘ Resolve major story arcs, fulfill long-term goals, create a satisfying           โ•‘โ”‚
โ”‚โ•‘ resolution to play.                                                              โ•‘โ”‚
โ”‚โ• โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—            โ•‘โ”‚
โ”‚โ•‘ DOWNTIME                                                            โ•‘            โ•‘โ”‚
โ”‚โ•‘      Days, Weeks, Months, Years                                     โ•‘            โ•‘โ”‚
โ”‚โ•‘ Spend treasure, level up, establish domains and institutions, build โ•‘            โ•‘โ”‚
โ”‚โ•‘ relationships, leave your mark on the world.                        โ•‘            โ•‘โ”‚
โ”‚โ• โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—            โ•‘            โ•‘โ”‚
โ”‚โ•‘ ADVENTURE                                              โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘      Hours                                             โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ Explore the dungeon, complete quests,                  โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ return with treasure.                                  โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ• โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ DUNGEON TURN                              โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘      5 mins                               โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ Explore the room.                         โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ• โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ COMBAT                       โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘      Seconds or Minutes      โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ Rout the goblins.            โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ• โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—            โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘ COMBAT ROUND    โ•‘            โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ”‚โ•‘      30 seconds โ•‘            โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
โ””โ•‘ Hit the goblin. โ•‘            โ•‘            โ•‘            โ•‘            โ•‘            โ•‘โ”‚
 โ•šโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•ฉโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•ฉโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•ฉโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•ฉโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•ฉโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ–ผ
                                                                               Meaning

Trad Structure

Thereโ€™s been a lot of discussion of procedure in the Old School Renaissance due to the rediscovery of such rules as the dungeon turn. Traditional games de-emphasise procedural rules and often do not have significant structure: The trend in the 90s was toward more DM fiat, more emphasis on story, and homogenised mechanics where every roll is some variation on the skill roll.

There's a section in the AD&D 2E DMG which weighs up the argument that having random encounters at all is โ€œfoolishโ€ and the DM should be in direct control of every aspect of the game. The book comes down in favour of the โ€œjudiciousโ€ use of random encounters, raising the question of how a thing can be both ๐˜ซ๐˜ถ๐˜ฅ๐˜ช๐˜ค๐˜ช๐˜ฐ๐˜ถ๐˜ด and ๐˜ณ๐˜ข๐˜ฏ๐˜ฅ๐˜ฐ๐˜ฎ.

A basic Trad style system might look like this:

 โ•”โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—             โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
 โ•‘Player describes action.โ”œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ–บGM assigns skill test.โ”‚
 โ•šโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ–ฒโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•             โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ฌโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜
            โ”‚                                       โ”‚
            โ”‚                                       โ”‚
            โ”‚                                       โ”‚
 โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ดโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”       โ•”โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ–ผโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•—
 โ”‚GM determines outcome of test,โ—„โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”คPlayer rolls skill test.โ•‘
 โ”‚presents new situation.       โ”‚       โ•šโ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•
 โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

It works fine. The problem is that thereโ€™s no room for mechanical results to build upon themselves; they are always moderated directly before and after the roll by the DMโ€™s interpretation. The roll and the stats of the PCs are not nothing in this scenario - they still suggest a direction for the DMโ€™s interpretation to go in - but what weโ€™re looking at is a lot closer to pure imaginative play with the DM as an arbiter in the style of FKR than a true synthesis of mechanics and make-believe.

Links

Proceduralism, by Gus L

What Even Is a Procedure, by Prismatic Wasteland

Loops, by emmy verte

Theoretical & Practical Proceduralism, by Marcia B

Nested Loops & Baseline Activities by Valinard

Broader Proceduralisms, by Nova

The Universal Procedure of the OSR, by Prismatic Wasteland

Old School But No Modules by Alex Schroeder

Matrix Campaign Structures Part 1 by Ty

The Lost Dungeon Crawling Rules of DnD by Questing Beast

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