Comments on: Lightning Bolts http://drilian.com/2009/02/25/lightning-bolts/ Infrequently-updated ramblings about game development projects, ideas, and techniques Fri, 30 Dec 2011 17:07:03 +0000 hourly 1 http://wordpress.org/?v= By: ChickenBones http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-221 ChickenBones Tue, 27 Sep 2011 13:07:07 +0000 http://drilian.com/?p=281#comment-221 Could you please explain how you managed to get such a nice jittering effect on the bolt. Could you please explain how you managed to get such a nice jittering effect on the bolt.

]]> By: Mash http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-170 Mash Thu, 28 Apr 2011 07:57:06 +0000 http://drilian.com/?p=281#comment-170 Hey Drilian, awesome article great work. Have been looking for something like this for ages! I was wondering if you could please help me with something. Im rendering each segment as three quads, two caps, and a middle. All the vert coordinates are generated into a single vertex buffer so the entire bolt can be drawn as a single batch. However, I have the problem you described above where the end caps of the segments overlap and blend together to create small circles along the bolt. Im using an additive blending when rendering the bolt. I dont quite understand your solution to this. Could you explain a little more please? Also, what blending do you use when rendering your bolt? Thanks! Hey Drilian, awesome article great work. Have been looking for something like this for ages!

I was wondering if you could please help me with something.

Im rendering each segment as three quads, two caps, and a middle. All the vert coordinates are generated into a single vertex buffer so the entire bolt can be drawn as a single batch. However, I have the problem you described above where the end caps of the segments overlap and blend together to create small circles along the bolt. Im using an additive blending when rendering the bolt.

I dont quite understand your solution to this. Could you explain a little more please? Also, what blending do you use when rendering your bolt?

Thanks!

]]> By: Chris http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-168 Chris Tue, 12 Apr 2011 06:45:18 +0000 http://drilian.com/?p=281#comment-168 Hey all! Very good article I understand what is behind it but i have my problems to implement it. Can someone help me to realize this in C#/XNA ? I don't understand how to do the drawing with the animation (bolt1/bolt2 changes)? Would appreciate a code snippet. Greetz and Thx to all. :-) Hey all!

Very good article I understand what is behind it but i have my problems to implement it.
Can someone help me to realize this in C#/XNA ? I don’t understand how to do the drawing with the animation (bolt1/bolt2 changes)?
Would appreciate a code snippet.

Greetz and Thx to all. :-)

]]> By: gorga http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-167 gorga Sun, 03 Apr 2011 19:49:28 +0000 http://drilian.com/?p=281#comment-167 Great article! And just what I was looking for. Didn't even started programming my game yet but I knew lightning could be an obstacle. Not anymore! Thanks : ) Btw, Life force is my favourite NES game. If you make something better, let me know : ) Great article! And just what I was looking for.
Didn’t even started programming my game yet but I knew lightning could be an obstacle. Not anymore! Thanks : )
Btw, Life force is my favourite NES game. If you make something better, let me know : )

]]> By: Aaron http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-166 Aaron Tue, 29 Mar 2011 19:54:20 +0000 http://drilian.com/?p=281#comment-166 Very nice. Though it is fractal, it seems less an L-system and more similar to the midpoint displacement technique for terrain generation (just constrained to a line instead of a quad). Very nice. Though it is fractal, it seems less an L-system and more similar to the midpoint displacement technique for terrain generation (just constrained to a line instead of a quad).

]]> By: Lighting Bolts Effect « Gemserk http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-165 Lighting Bolts Effect « Gemserk Sat, 19 Mar 2011 20:55:52 +0000 http://drilian.com/?p=281#comment-165 [...] time ago I made an lighting bolts effect in Java using Slick2D, following the tutorial of Drilian’s House of Game Development. My [...] [...] time ago I made an lighting bolts effect in Java using Slick2D, following the tutorial of Drilian’s House of Game Development. My [...]

]]> By: Drilian http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-136 Drilian Sun, 27 Jun 2010 22:21:54 +0000 http://drilian.com/?p=281#comment-136 Sure! I figured the names of the functions would give away what they do, but maybe not :) Average(a, b) - average the two points. Perpendicular(v) - Return the 2D vector perpendicular to this one (-v.y, v.x) RandomFloat(min, max) - generate a random floating point value between min and max, inclusively. Sure! I figured the names of the functions would give away what they do, but maybe not :)

Average(a, b) – average the two points.
Perpendicular(v) – Return the 2D vector perpendicular to this one (-v.y, v.x)
RandomFloat(min, max) – generate a random floating point value between min and max, inclusively.

]]> By: Tyler http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-135 Tyler Fri, 25 Jun 2010 22:37:37 +0000 http://drilian.com/?p=281#comment-135 Could you please elucidate exactly what each function in your pseudocode does please? Its a bit annoying as none of those are "standard" functions. Could you please elucidate exactly what each function in your pseudocode does please? Its a bit annoying as none of those are “standard” functions.

]]> By: Drilian’s House of Game Development » Blog Archive » Update For The Past N Months http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-99 Drilian’s House of Game Development » Blog Archive » Update For The Past N Months Wed, 06 Jan 2010 03:15:36 +0000 http://drilian.com/?p=281#comment-99 [...] Also, I decided that the Level 1 background (in the first two images in this post) was hideously bland (if such a thing is possible), so I decided to redo it as flying over a red desert canyon (incidentally, the walls of the canyon are generated using the same basic divide-and-offset algorithm as my lightning bolt generator): [...] [...] Also, I decided that the Level 1 background (in the first two images in this post) was hideously bland (if such a thing is possible), so I decided to redo it as flying over a red desert canyon (incidentally, the walls of the canyon are generated using the same basic divide-and-offset algorithm as my lightning bolt generator): [...]

]]> By: Drilian http://drilian.com/2009/02/25/lightning-bolts/comment-page-1/#comment-97 Drilian Mon, 12 Oct 2009 22:31:51 +0000 http://drilian.com/?p=281#comment-97 Thanks :) I'm just using FRAPS for capture, works great for my purposes! Thanks :) I’m just using FRAPS for capture, works great for my purposes!

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