December 23, 2011
I went from -2 to -33 from a single post.
Well on track for my -666 !!!
In the meanwhile I've been quite busy, working on commercial projects.
I bet the people who voted me down have not even got a job in the industry !!
Vote me down more!! I need to reach my goal!
Well on track for my -666 !!!
In the meanwhile I've been quite busy, working on commercial projects.
I bet the people who voted me down have not even got a job in the industry !!
Vote me down more!! I need to reach my goal!
October 29, 2011
Announcing the upcoming IGF student division finalists, http://studentgame.caswal.com/Jousting/index.html
October 27, 2011
Today I got my fledgling newchool opengl engine launched.
It flapped around, at no stage did it fly, but it did not fall over, and it did not disgrace itself on the way out!
It flapped around, at no stage did it fly, but it did not fall over, and it did not disgrace itself on the way out!
October 15, 2011
It's a small blog mention @ http://www.asmcommunity.net/board/index.php?blog=751;sa=topic;id=51
Here I describe a way to breach regular hardware limits for the total number of lights, without sacrificing the minimum framerate, and while considering shadowcasting in the same step.
Here I describe a way to breach regular hardware limits for the total number of lights, without sacrificing the minimum framerate, and while considering shadowcasting in the same step.
August 25, 2011
So on another topic, I'm currently working on a game involving medieval jousting (yes, horsies, mounted by metal-clad men..) and we've glued some kinematic rigid bodies to various joints of our warriors (shields, lances, so forth).
I was happy to set up physics under Bullet to drive the kinematic bo…
I was happy to set up physics under Bullet to drive the kinematic bo…
June 22, 2011
Re-enabling the culling of portal polygons during their Clipping phase paid off - I am now detecting five portal quads are being eliminated during the search for 'true portals', and their geometry matches that of the inner box faces - I have eliminated my 'fake portals' correctly.
The sixth and fina…
The sixth and fina…
June 20, 2011
I found a very fast way to get the results I was looking for in terms of dealing with the 'closed, unreachable space' in the test model (ie, the space inside the inner box).
I modified the ChoosePartitioningPlane function so that it will always return a plane from the input geometry, as long as ther…
I modified the ChoosePartitioningPlane function so that it will always return a plane from the input geometry, as long as ther…
June 20, 2011
Wrapping my Line/Plane intersection tests in a simple Macro helped to make the case handlers for the triangle splitter more consistant and helped knock out the bugs.
I have been studying the logged output of my tree generator, and using that information to step through the same process in the 3D mod…
I have been studying the logged output of my tree generator, and using that information to step through the same process in the 3D mod…
June 14, 2011
Major bug located in my triangle-splitting implementation.
My algorithm for finding the intersection of a line segment (ie 'edge') and a plane expects the two endpoints of the line segments to be handed in a particular order, which I was not observing in all cases.
The result was that some child tria…
My algorithm for finding the intersection of a line segment (ie 'edge') and a plane expects the two endpoints of the line segments to be handed in a particular order, which I was not observing in all cases.
The result was that some child tria…
June 07, 2011
More bugfixes and improvements.
The ChooseSplittingPlane method no longer returns planes which don't partition the input set, and its heuristic has been changed to take note of the number of triangles split by a candidate plane.
A bunch of small code changes and bug fixes were made, some enumeration…
The ChooseSplittingPlane method no longer returns planes which don't partition the input set, and its heuristic has been changed to take note of the number of triangles split by a candidate plane.
A bunch of small code changes and bug fixes were made, some enumeration…
June 03, 2011
[subheading]Shave and a Haircut?[/subheading]
When a problem comes along, you must Clip it ;)
At this point, most of the BSP tree will no longer be of any use to us - our leaf nodes, which represent our convex subspaces, each contains a list of 'portal fragments', some of which are actually 'duds', w…
When a problem comes along, you must Clip it ;)
At this point, most of the BSP tree will no longer be of any use to us - our leaf nodes, which represent our convex subspaces, each contains a list of 'portal fragments', some of which are actually 'duds', w…
June 02, 2011
The problems in the tree generator and portal generator seem to be fixed.
I am now able to discover all the convex subspaces, construct the portals as BFQ's and then 'shatter' them against one another.
However before I post the updated sourcecode, I need to eliminate a bunch of runtime tracing/debu…
I am now able to discover all the convex subspaces, construct the portals as BFQ's and then 'shatter' them against one another.
However before I post the updated sourcecode, I need to eliminate a bunch of runtime tracing/debu…
May 31, 2011
I've decided to spend a few hours hardening the current codebase through a series of exhaustive tests apon the triangle splitting code in the tree generator - I seem to be getting unreliable results for some reason (occasionally the output is not the same) and I need to understand why this is so.
I'…
I'…
May 30, 2011
Things seem to be going well.
The BSP Tree generator now successfully processes the 'box in a box' model into a bunch of convex subspaces and creates the Portals, intializing their geometry with Big Fat Quads.
I have implemented a full triangle-splitting BSP Tree generator, however I intend to rema…
The BSP Tree generator now successfully processes the 'box in a box' model into a bunch of convex subspaces and creates the Portals, intializing their geometry with Big Fat Quads.
I have implemented a full triangle-splitting BSP Tree generator, however I intend to rema…
May 29, 2011
I found a bunch more small bugs and fixed them, but I haven't posted the changes yet...
I've created a test geometry involving two boxes, one inside the other, with the outer box's normals pointing inwards.
The BSP generator can't handle it. That's not good.
The BSP generator has two big problems.
The …
I've created a test geometry involving two boxes, one inside the other, with the outer box's normals pointing inwards.
The BSP generator can't handle it. That's not good.
The BSP generator has two big problems.
The …
May 28, 2011
[subheading]Portal Geometry[/subheading]
Portals begin life as a big fat planar quad, we already know this, we just don't know how to go about making them yet.
However, I am going to provide the sourcecode for the solution here and now. If you have questions, ask them.
And we don't know how to represe…
Portals begin life as a big fat planar quad, we already know this, we just don't know how to go about making them yet.
However, I am going to provide the sourcecode for the solution here and now. If you have questions, ask them.
And we don't know how to represe…
May 26, 2011
[subheading]Tracking Multiple Materials during BSP Tree Generation[/subheading]
My mesh loader sorts the model's triangles (ie vertex indices) into attribute groups by material, that's why you'll see references to "Sorted Indices" in my sourcecode.
I'm happy to completely forget about tracking materi…
My mesh loader sorts the model's triangles (ie vertex indices) into attribute groups by material, that's why you'll see references to "Sorted Indices" in my sourcecode.
I'm happy to completely forget about tracking materi…
May 24, 2011
[subheading]Keep them doggies movin'[/subheading]
Here's the goodies
Please forgive the organic nature of the code and do check periodically for an update!
The Leaf class currently consists only of a class def.. this is a work in progress. I may in fact decide to eliminate it after all.
I'm not very p…
Here's the goodies
Please forgive the organic nature of the code and do check periodically for an update!
The Leaf class currently consists only of a class def.. this is a work in progress. I may in fact decide to eliminate it after all.
I'm not very p…
May 24, 2011
[subheading]Organic Code Warning[/subheading]
The following sourcecode is subject to change without notice.
Expect that I will adjust and extend this code as I see fit.
Here you can find the Class Definitions for the BSPTree container class, and my two BSPNode classes.
There is a BSPNode class for inte…
The following sourcecode is subject to change without notice.
Expect that I will adjust and extend this code as I see fit.
Here you can find the Class Definitions for the BSPTree container class, and my two BSPNode classes.
There is a BSPNode class for inte…
May 11, 2011
I have regretfully omitted to mention something quite important, although I did allude to it.
How do we track which subspace an entity is in at any given moment - and what happens if an entity is poking partly through a portal?
We can handle this two ways, but personally, I think it's helpful to mak…
How do we track which subspace an entity is in at any given moment - and what happens if an entity is poking partly through a portal?
We can handle this two ways, but personally, I think it's helpful to mak…
May 09, 2011
[subheading]Regular Joe says:[/subheading]
[font="Arial"]Now we've done all our pre-processing, it's time to talk about the runtime stuff - actually rendering with this cell and portal graph.
We know that the cells in our world graph are convex, so we can safely assume that all surface geometry in th…
[font="Arial"]Now we've done all our pre-processing, it's time to talk about the runtime stuff - actually rendering with this cell and portal graph.
We know that the cells in our world graph are convex, so we can safely assume that all surface geometry in th…
May 07, 2011
[subheading]AVOID ILLEGAL POLYGONS[/subheading]
Just some quick notes regarding the 'splitting' of geometry during BSP tree generation...
Traditionally, BSP Tree Generator algorithms will actually physically split polygons into two new polygons, placing one in each child subspace.
The problem with thi…
Just some quick notes regarding the 'splitting' of geometry during BSP tree generation...
Traditionally, BSP Tree Generator algorithms will actually physically split polygons into two new polygons, placing one in each child subspace.
The problem with thi…
April 27, 2011
Relax.
We are not going to use BSP in the traditional way (ie, for implementing painters algorithm during rendering).
Rather we will use BSP as an intermediate tool for generating our cell and portal graph.
We are interested in discovering a set of convex subspaces and the 'holes' that connect them - …
We are not going to use BSP in the traditional way (ie, for implementing painters algorithm during rendering).
Rather we will use BSP as an intermediate tool for generating our cell and portal graph.
We are interested in discovering a set of convex subspaces and the 'holes' that connect them - …
April 13, 2011
This is my first Journal, so forgive me if I break any conventions.
[heading]What's this all about?[/heading]
As part of the requirements for 'Advanced Diploma in Professional Game Development (Programming Major)' second year, I am expected to spend something like 120 hours researching and developing…
[heading]What's this all about?[/heading]
As part of the requirements for 'Advanced Diploma in Professional Game Development (Programming Major)' second year, I am expected to spend something like 120 hours researching and developing…
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