light from lightsaber?

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I made a lightsaber with line renderer like this:

alt text

and I'm currently trying to make the light actually emitted from it. like this: alt text

see that yello light? that is what I want. First I add 2~3 point lights to lightsaber, but it looks not good when the lightsaber penetrate things.

see: there is blue light

alt text

and now: there is no light

alt text

so what should I do? I don't want to be messy with ten point lights in one lightsaber. And there is no 'convenient cylinder shape light'. Please help me, masters of the Unity!

Answer 1

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Answer by YoungDeveloper · Dec 16, 2013 at 11:47 AM

You could attach a simple light to saber gameobject and child it, that would be the simplest solution. Or you could write a shader, but that is a bit more advanced, but i think you could find ir for free using mother google.

It looks like that this game used simple point light, which is the simplest solution.

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HSW2201 · Dec 16, 2013 at 12:05 PM 0

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Hmmm thanks,but will there be no performance drop by attach several point light to saber? If there is no drop, then I will take it.

YoungDeveloper · Dec 16, 2013 at 12:22 PM 0

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Couple of point lights wont really harm any performace, and by couple i mean tens of them. Dont be afraid to test stuff, add hundred point light and see what are the stats.

HSW2201 · Dec 16, 2013 at 12:47 PM 0

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Well that blowed away my worries. Thanks a lot! now I can proceed to adjusting reflecting vector XD

Answer 2

Answer by CBosselmann · Dec 16, 2013 at 03:43 PM

Humph, i was thinking about this for a while before answering it: Obviously a point light is the simplest solution but that doesn't provide an even distribution of light around the object (in this case a lightsaber).. You could use a spot light with a small light cone but thats still a bit iffy. As Young said there are plenty of solutions in the world of shading (check out Strumpy's wonderful tool on the asset store if your not familiar with writing shaders) but as I see it now, the easiest solution is simply a Point Light as a child objet, is cheap as long as you use no more than 2 (the less the better) and make sure you place them/it close to the middle of the object for best distribution. Also consider adjusting the light distance and brightness properly. Also avoid allowing the light to cast shadows (if using Pro).

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YoungDeveloper · Dec 17, 2013 at 12:38 AM 0

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I actually meant spot light, not point light, mistypo

light from lightsaber?

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