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1  Virtual worlds (in education) / Virtual world discussions / Re: will it be illegal to have an email in a false name? on: June 23, 2008, 04:24:59 PM
US law requires anonymity in certain circumstances, mostly related to child protection. As such, I find it highly unlikely that they will ban it.
2  Schome Park Programme / Reflection and forward planning / Re: The definition of Second Life on: June 09, 2008, 11:55:06 AM
I am left wondering why you would need a digestive tract to make food.
3  Schome Park Programme / Reflection and forward planning / Re: The definition of Second Life on: June 08, 2008, 09:41:54 PM
That doesn't count. You have to use simplified language for parents - it's a well known fact. :P
4  Schome Park Programme / Reflection and forward planning / Re: The definition of Second Life on: June 08, 2008, 12:19:49 PM
No. Linden Lab is very explicit about not using that word. There is no reference to "playing second life" - although there are plenty to playing music, videos, etc. and plenty of comments from residents on the blog that use the term.
5  Schome Park Programme / Reflection and forward planning / Re: The definition of Second Life on: June 08, 2008, 11:27:24 AM
There are plenty of people in Second Life who call it a game, so that doesn't help. :P
6  Schome Park Programme / Reflection and forward planning / Re: The definition of Second Life on: June 07, 2008, 08:56:18 PM
In most cases it is; you have to start a separate program to use it.
7  Schome Park Programme / Reflection and forward planning / Physics Phenomenon - Havok4 on: June 07, 2008, 02:49:50 PM
The direction is random (no time to figure out something better), and the speed is vaguely related to the depth of penetration, but largely also random. Happy? :P
8  Schome Park Programme / Reflection and forward planning / Physics Phenomenon - Havok4 on: June 06, 2008, 10:42:17 PM
They're exactly the same - I explained them in that post. The only change is in how it decides what to throw where how fast. With the exception of the so-called "Schome Strange Force" - known to the rest of the world as the "physics simulation resolution limitation". In Havok 1, every object had a space of 0.05m which the physics engine saw as part of the object. So objects couldn't get closer than 0.1m apart.

In Havok 4, the same rules apply - except to spheres. The simulator models every object as a collection of triangles in the approximate shape of the object. In Havok 4, this does not apply to perfect spheres, which are modelled as perfect spheres, and behave accordingly. As a result, they do not have this 0.05m imprecision, and will thus hover exactly 0.05m above other objects, or correctly collide exactly with other perfect spheres.
9  Schome Park Programme / Reflection and forward planning / Physics Phenomenon - Havok4 on: June 06, 2008, 10:36:54 PM
Basically, yes.

With the upcoming mono runtime, this would have negligible effect on simulator speed. You could just use a HUD to rez objects with the script already inside to make building easier.
10  Schome Park Programme / Reflection and forward planning / Re: The definition of Second Life on: June 06, 2008, 09:30:02 PM
Tell him that doing his homework is a game called Microsoft Word. :P

"Sandbox games" aren't actually games - they're technically toys. Problem solved.
11  Schome / Schome discussions / Re: Learning about money ... on: June 06, 2008, 07:31:23 PM
We do things like that in "Form time". Which is twice a week and is mostly ignored except when the teacher has wisdom to impart. It's usually wisdom along the lines of "The concert band is playing on Thursday," so it doesn't take long to be imparted.

Occasionally more useful stuff along the lines of what's actually meant to happen happens, however.
12  Schome / Schome discussions / Re: Learning about money ... on: June 06, 2008, 06:50:50 PM
I can't imagine anything less interesting than that.

"Let's talk about how loans work, how you should spend money, and what [list of random acronyms] mean!"
13  Schome Park Programme / Reflection and forward planning / Physics Phenomenon - Havok4 on: June 06, 2008, 06:49:48 PM
I believe so. You can actually make objects that have no gravity acting on them. However, there is no atmosphere, so the end result is that objects tend to end up flying in the same direction forever.
14  Schome Park Programme / Reflection and forward planning / Physics Phenomenon - Havok4 on: June 06, 2008, 06:34:47 PM
It'd crash sixty seconds after the next time an object hit another too fast.
15  Schome Park Programme / Reflection and forward planning / Physics Phenomenon - Havok4 on: June 06, 2008, 06:28:01 PM
The force is, in fact, totally irrelevant to anything. Not to mention that metres per second is not a unit of force.

This is a result of interpenetration - if you can convince a physical object to penetrate something else, you have created a physically impossible scenario in which two objects exist at the some point. The response of the physics engine is to enter an infinite loop trying to work out what's going on. In order to avoid this, a program running in front of the physics engine resolves the issue by basically throwing the penetrating objects in opposite directions really fast. This resolver changed between 1 and 4 - Havok 1 didn't actually have one, so Linden Lab wrote their own that didn't always work, and thus sometimes let sim crashes through anyway. Havok 4 uses a much better one included in Havok 4 (and, indeed, which cannot be disabled by Linden Lab). As such, the behaviour of interpenetrating objects has changed.

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