Sunday, 22 April 2012

Complexity in RPGs



1D6 
When I started playing (usually as the Dungeon Master) Advanced Dungeons & Dragons about 30 years ago, hitting an opponent with an arrow resulted in rolling 1D6, a single six-sided dice, to determine the amount of damage done.


Over the following years, much experimentation with different systems gave me a feeling for what worked and didn't work during game sessions. More rules could bring clarity or, done to excess, it could bog down game play. Sometimes a system might hit a sweet point where it didn't intrude on enjoyment either by leaving huge gaps (which could lead to arguments about interpretation or how to resolve a situation) or by imposing huge burdens which slows everything down and confuses those who haven't spent their time studying rule books instead of school exams.

My system of choice back then tended to get a lot of criticism from players who felt it was too complex, involving table look-up for results. I liked it as I had achieved a certain level of mastery that put me in a state of 'flow' when running it, but the critics had a good point when comparing it to contemporary systems such as the aforementioned AD&D with the simple damage roll. Rolling 1D6 was pretty much as fast and simple as it could get without eliminating chance.

Twenty to thirty years later I find myself as a player in a D&D group. During the early levels of heroic adventures (levels 1 through 10) the system often threw up problems with how long it took to resolve combat and mistakes were prevalent due to the amount of modifiers, often of a fleeting nature, that had to be applied to get the final results to determine if an attack hit and then what damage it would do. Note that this is with bright people (IT professionals and a doctor of biology) who have been into RPGs for 25-30 years, in many cases having played all editions of D&D as well as many other systems.

Last night we had a session at paragon level, starting at level 11 and reaching level 12 during the session. This brought in some additional factors for each character as various class powers are unlocked at those levels, leading to everybody struggling more than usual. Temporary boosts from our Warlord were usually forgotten completely and I know that I failed to apply a large amount of damage in several cases despite usually being au fait with the system.

Therefore I decided to map out exactly how damage is resolved for my character. He has ten different powers that can deal damage, each of which has many quirks, so I decided to focus on just one to limit the scope of the exercise. The following flowchart illustrates the process using one of my ranged attacks (shooting an arrow):


Image is available here and can be used freely with no restrictions.

There is an assumption in this example that the power was successfully used as the starting point is the "hit or critical", thus the chart doesn't actually show the entire process. Some of the powers also have an effect on miss, making it a bit more complicated than what is shown above.

Contrasting today's D&D with the 1978 version that used a simple 1D6 roll to determine damage really brings home how much the complexity in RPGs has changed.

Tuesday, 17 April 2012

Great webcomics

Light entertainment, socio-political commentary and deep insight into the human condition can be found in webcomics. Published regularly or irregularly, sometimes with a side business in posters, t-shirts or other collectibles, they are an enduring and widespread side of the web that I have come to love.

No day is complete without visiting at least a few of the following, some of which are occasionally NSFW (and Oglaf is always NSFW) depending on how enlightened your employer is:

xkcd by Randall Munroe

Cyanide and Happiness by Kris Wilson, Rob DenBleyker, Matt Melvin and Dave McElfatrick

Scandinavia and the World by humon

Sinfest by Tatsuya Ishida

Questionable Content by Jeph Jaques



oglaf by Trudy Cooper


Image Copyright oglaf.com

Least I could do by Ryan Sohmer

smbc by Zach Weinersmith

Wondermark by David Malki

Jesus and Mo by Mohammed Jones (notably Mo is a body double, thereby avoiding the restriction on depicting the prophet)

Penny Arcade by Jerry Holkins and Mike Krahulik

Looking for Group by Ryan Sohmer and Lar deSouza

Image Copyright © 2012 Blind Ferret


Also an honourable mention for userfriendly because I read it for years and erfworld because the first book is really very good for anybody who is into boardgames.

Sunday, 15 April 2012

Glasgow orchid fair 2012

The Glasgow orchid fair takes place in the Botanic Gardens every spring. As a free event it offers an excellent opportunity to see some very beautiful flowers and photograph them. This year was the first time I had a macro lens and the photos from the fair reflects this.












The full set of pictures is available on Flickr.


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These photographs are licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

Saturday, 14 April 2012

Changing seasons

Temperatures in Scotland in March are usually around 10 degrees Celsius. This year the temperature highs that had stood unchallenged for over 50 years were broken, then broken again the next day and broken a third time the day after that with temperatures reaching 23.6C.

The United Kingdom was almost entirely cloud-free, as shown in this stunning satellite picture. The contrast with the usual existence under steel grey skies could not be greater.



Of course it didn't last and a week later we had snow falling for most of a day and staying on the ground in much of Scotland. This varied weather made me think of the excellent movie Seasons, by the talented Erica Haowei Hu, which captures the dynamics of changing seasons beautifully.

Thursday, 12 April 2012

The beauty of earthporn

Porn has been making its way into culture in many ways, not least in colloquial language where it is increasingly common to append 'porn' to signify a collection of something.

One such example is earthporn, as seen in one of Reddit's many communities. While this might at first give the impression of something sexual it is actually a collection of photographs featuring planet Earth at its most beautiful, unusual or awe-inspiring.

Below are a few sample photographs, all of which make me want to grab my camera and book a flight to go exploring. The last one also seems like an excellent location for a mad scientist engineer to create a base for bringing plans of world domination to fruition.


Tsingy de Bemeraha


Horseshoe Bend


Himmeltindan, Vestvågøy, Norway


Entrance to an ice cave


Aogashima, Japan



Monday, 9 April 2012

Macro photography

Reproducing subjects at 1:1 ratio or greater can reveal a world which is not normally visible for us to study closely without difficulty. Macro photography is commonly seen today with subjects such as insects and flowers, for example there is a large community on G+ tagging shots with #macromonday to share such photos. The Closer and Closer Macro group on Flickr has nearly a million photographs, demonstrating the popularity of macro photography.

A typical macro shot has razor sharp focus on the subject matter and a narrow depth of field (sometimes extended with focus stacking). The use of a ring flash or a flash diffuser is common in order to improve light conditions as the photographer needs to work very close to the subject. Tripods are not required but are very helpful in order to stabilise the camera when longer exposures are needed to compensate for poor light conditions and the subject can be relied on to not fly off while you are setting up the tripod.

Personally I use the Canon EF 100mm 2.8 USM lens on a 60D with a 430 EX II flash and a diffuser. Below are some sample photographs taken with the lens.


View on black here. This shot of a hornet has been cropped and rotated to improve the composition. Some photographers feel strongly that using crop to achieve a 'macro effect' is not appropriate. In this case the original shot was already a macro shot, as can be seen here. If you are shooting for your own enjoyment then there is no reason to worry about 'rules' but just be aware that some people may take a purist position.


This is a shot of an ice cube on a printed circuit board, with an air bubble (about 2 to 3 mm wide) trapped in the melting water. Again the shot has been cropped for composition. View on black here.


Euro coin, uncropped image shot af f/5.0, 1/400s with ISO 100 and no post processing (JPEG file straight from camera). View on black. Criticism of this picture would probably include that the coin is not fully in focus and that the subject does not fill the frame. A second light source would have been helpful as well.

In conclusion, macro photography can bring out previously unseen colours and details in the world around you. It can be great fun and range from very easy shots such as the coin to very difficult where the subject is prone to flee at the slightest provocation. There are some inexpensive ways, such as extension tubes, to get into macro photography or you can pick up some good glass - many macro lenses have excellent optical characteristics.

Sunday, 8 April 2012

Remote Kill



 “Six hours in profiling, that is just nuts!” Connor said, shaking his head in disbelief at his companion.

  “Yeah, I'm used to it though”, Mohmad answered, then continued with a smile. “When your mother is from Chechnya and your father from Iran you get used to showing up at the airport really early and still potentially missing your flight. They ask every question seven different ways trying to trip you up in a contradiction so they can deny you boarding. They've got monthly targets for 'detections' so unless they've already met quota I'm always in for a rough ride.”

 Laughing and still shaking his head, Connor picked up his bacon sandwich and bit into it but as his jaw closed there was an audible crack and he winced.

 ”What the...” he said, reaching into his mouth gingerly. In moments he confirmed his suspicion, feeling the jagged edge where only smooth surface should exist. He checked for any hard objects in the sandwich but saw nothing that would give reason for raising a complaint with the restaurant staff.

 “Broken tooth?” Mohmad asked. “Haven't seen that happen in years.”

  “Yeah it is weird”, Connor answered, “I'd better message my dentist.”

  Grabbing a glass of water, he swirled some around his mouth to clear it. A look of consternation came across his face and he froze momentarily, then spat into the glass. Quickly sinking through the water were two whole teeth, with complete roots. The friends both stared quietly at the glass in quiet disbelief.

  After several seconds Connor shook off the shock and reached for his communicator, hitting the entry for his dentist. Seconds later a short text message appeared on the screen, stating that the clinic was closed for the day.

  “Why would the clinic be closed at one in the afternoon on a weekday?” Connor asked.

  “Why don't you call my dentist instead, she's great. Really knows her stuff and doesn't cost an arm and a leg. Here I'll wave the contact to you.”

  Quickly manipulating his device, Mohmad brought up the entry for his dentist and then held his communicator over Connor's communicator, shaking it gently once as if adding a little salt to a dish.

  The entry appeared on Connor's communicator and he selected it, sending a brief query. Just six seconds later a calendar appointment opened up on screen and he confirmed acceptance. A Galileo position dot instantly appeared on the map application, showing estimated travel time from his current location to the clinic.

 “Ok, I've got an appointment 45 minutes from now so I'd better get going. Catch up with you another time, ok? Maybe at the old library, they've turned it into a hacker space and maker's workshop now, some of the kids are turning out really cool micro-satellites.”

  “All right, yeah I'll see you there. Go get your teeth fixed, I'll get the bill here.” Mohmad answered, waving his friend away before Connor could reach for the NFC pod on the table.

***

 “Ok, you've broken a molar and lost two incisors. It is very unusual, actually I've never seen anything like this. You said you haven't had any sore gums or bleeding?” the dentist, Jaśmina, asked.

 “None, no problems at all for years.” Connor answered, speaking as well as he could with the dentist probing deep inside his mouth with a metal instrument.

  “I'm going to probe the area around the adjacent teeth, signal if you feel any pain.” Jaśmina continued.

 Moments later she paused, shock registering on her face before she slammed down a neutral, professional demeanour. Slowly she retracted a whole tooth, dropping it into a tray and then turned slightly towards her lapel microphone, calmly dictacting into it.

 “Lower right premolar detached when probed, no sign of gum disease or damage. No bleeding or pain”. The case file on her computer instantly updated with the voice clip and a transcript.

 Turning back to Connor, she continued “What is your dental history? Anything unusual, maybe something in the family history?”

 Connor shook his head, staring at the tooth in the tray. “No, nothing unusual. I had a full replacement about six years ago and no problems since then, not a single cavity. They were the good stuff, some patented method. My dentist went on about how great they were and I paid a fortune for the job, but it was worth it... well, until now I suppose.”

 “I'm going to need the contact details for your dentist and authority to pull your case from central records, Connor. I don't want to speculate so if you could please be patient and let me investigate this fully I'll get back to you, ok? Don't eat anything for now, maybe just get water or get a smoothie. Use a straw if you are hungry and absolutely have to eat.”

***

  It was almost seven in the evening before his communicator buzzed. Picking it up immediately he scanned the message, seeing it was another appointment with Jaśmina at the dental clinic in just an hour. He quickly accepted, glancing down at the glass in front of him. At the bottom of the clear water were another six teeth, gleaming white with long roots. It had been a horrifying experience, sitting at the franchise chia outlet, feeling his teeth falling out one after the other.

 He hadn't been able to drink or eat anything, fearing that it would dislodge the remaining teeth, and had spent the day cursing his old dentist and trying to contact him to get answers. The office had remained closed and none of the alternate contacts or even emergency number had worked. He had given up on hearing back from Jaśmina today so the message was an enormous relief.

 An hour later he was at the clinic but wasn't called into the treatment room. Instead Jaśmina invited him into her office and asked him to sit down. She unrolled a display on the desk in front of him, the bright screen showing Connor's treatment history.

 “I couldn't reach your old dentist today, it seems the clinic has been closed. I've checked the tooth that I extracted earlier today and compared it to your dental records. Connor, it seems that you were sold unlicensed teeth.”

 “Unlicensed? What does that mean?” he answered, confusion clear on his face. “I paid a fortune! What about consumer rights, don't I have some kind of legal protection?”

 “Consumer rights don't protect you when you have bought counterfeit goods, actually you could be fined for buying them. Your dentist was not an authorized practitioner. It looks like his license had expired about six months before he grew your teeth from stem cells using the patented method. The rights holder seems to have caught up with him and discovered the malpractice. They activated the remote kill switch yesterday and your teeth are dislodging.”

 “Remote kill switch! What are you talking about? How can somebody kill my teeth?” Connor replied in horror. “They were grown from my stem cells, I paid for the procedure, they are my teeth!”

  “It is like remote deletion of ebooks”, Jaśmina answered. “You know how when they find copyright infringement in a text, like unattributed quotes, the title is removed remotely?” Connor nodded and she went on “Basically each tooth is implanted with a tiny chip that includes details on method, the dentist license number, a serial number and so on. It also has a remote kill switch, so if the manufacturer needs to do a safety recall then they can deactivate it remotely.”

 “What? There is a safety issue with my teeth? Are they poisoning me?” Connor cried out, getting more agitated as he spoke.

 “No, no, sorry, please calm down. Do you remember the Third Berne Convention? It was just after the nuclear bomb attack in the Turkish Republic of Northern Cyprus so the mainstream media didn't really report a lot on the negotiations, but that is when they brought in the new rules on intellectual property. There was a patient safety provision which mandated the inclusion of the chip so they could track defects. There is nothing wrong with your teeth, they are not dangerous. It is just that they used the safety feature to remotely kill them because your dentist had not paid the licensing fees. Basically your teeth are unlicensed and infringing manufactured goods.”

 Connor was shaking his head in disbelief, refusing to believe what he was hearing. His dentist had sold the treatment to him as being top of the range, with a life time guarantee. How could this be happening? He wasn't some fake designer leather purse from a Chinese sweatshop or pirated music clip exceeding the 3-second limit on fair use for previewing! This was his own body, his teeth grown from his own cells.

  Slowly be became aware that Jaśmina had continued talking. “... not reversible I'm afraid. The teeth can't be re-implanted and as you had a full set you are going to lose all of them. I can remove them now if you want or you can wait for them to fall out on their own. I can give you a set of temporary dentures while we grow a new set of your own teeth.”

  Connor looked at her, started to speak and then caught himself, pausing briefly before continuing “Look, I'm a little dazed and confused. Can we take a break so I can go splash some cold water on my face?”

***

 Coming back from the restroom, Connor said “Are you licensed?”, looking straight into the dentist's eyes.

 Jaśmina smiled at him. “Yes, I'm licensed but not for the patented method that your previous dentist used. I do mostly OpenTeeth work. Here, let me show you my current accreditations.” She worked the screen briefly, bringing up her profile with live links to a standards body that verified her certificates.

 Connor nodded, checked the certificates closely and then asked her “OpenTeeth? What is that?”

  “It is similar to the treatment you had before, but it is not covered by patents. The work was done in collaboration between the University of Gothenburg – that is in Sweden - and the Dental Hospital in Glasgow, then licensed under Creative Commons. There are no extra fees for using it as it was developed by public funded research, they publish everything in open journals as there are strict policies against patenting anything that is derived from research initiatives that are funded by taxation.”

  “Ok, eh, I haven't heard about this before. Why didn't my dentist use it then, is it substandard?” Connor asked.

  “No, they are feature equivalent but because there is no advertising they don't really have the same name recognition as the major brands. A lot of people haven't heard of it, I mean if you are not a dentist then you probably don't read dental journals, right? That is really the only place this gets discussed. Teeth are like any other consumer product, when people don't have any real insight they tend to use price as a guide to quality and the patent methods are by far the most expensive. Your dentist could charge a much higher price for using the patented method and as he wasn't paying license fees the money went straight into his pocket.”

 “Speaking of my money, how do I get it back? It looks like my dentist is gone and the clinic closed down” Connor said. “Can I claim against the rights holders?”

 Shaking her head, Jaśmina answered “No, they will state that the teeth were implanted by fraudulent means and deny responsibility, saying you should have checked his licenses. You could pursue a claim against the dentist if you can find him, but other than that it is a lost cause.”

 “Are there any, uhm, safety provisions in the OpenTeeth?” Connor asked.

  “No, the researchers didn't see any reason to include it. There are no known safety risks with teeth grown in the lab from the patients own stem cells. The stimulus methods provide strict control over growth and the implant step is done after growth is completed.” Jaśmina said. “There are no hazardous materials in the teeth either, they are identical to original human teeth except for enhanced resistance and durability.”

 “Has there ever been a safety issue with these teeth? Or with the patented ones I had before?” he asked.

  “No, none, it really is a proven method. The only remote kills ever done were on patented teeth due to invalid licensing and there has never been a recall of OpenTeeth product” she answered. “Also, it is not like the books or music that used to be in the public domain before it was sold off to private rights holders, the Creative Commons is a real license that protects works but it doesn't try to extract fees from users. There are some specific rules about how it can be used, for example I can only charge you for my time and costs, not for the design of the teeth. Also I have to encode the teeth with the license and attribute the design to the original researchers, not to my own name. The final product is yours though, free to use in perpetuity but you can't sell them to anybody.”

 “I don't see any reason I would ever sell my own teeth.” Connor said “You have convinced me. No extra fees, no remote kill. It looks like I'll be getting some of those OpenTeeth then.”


***

Published under Creative Commons CC BY-SA 3.0


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