Laser beam instead of crosshair

XFactor · Post by **XFactor** » Sat Jun 04, 2005 1:04 am

How would you make a laser beam that extends out from the camera.

Thank you very very much.

Midnight · Post by **Midnight** » Sat Jun 04, 2005 4:11 am

one way would be to make a beam model or billboard and attach it to the camera.

personally I would try to use 3d line... I'm not sure if that would work.

XFactor · Post by **XFactor** » Sat Jun 04, 2005 4:26 am

1) Which one looks nicer?
2) If the the 3d line looks nicer, then could you please post some code?
3) If a model looks nicer, where would you suggest me looking for one, I cant model?

Thanks a lot.

discreet · Post by **discreet** » Sat Jun 04, 2005 5:54 am

I would use the 3d line, and attatch a billboard to the end where it hits on the world... That was a demo for that except no 3d line was drawn, I beleive you could make it work...

something like this
put it inside the loop

Code: Select all

SMaterial mtl;
mtl.AmbientColor = mtl.DiffuseColor = 
mtl.EmissiveColor = video::SColor(50,0,0,255);
driver->setMaterial(mtl);
//You will need to position it at the camera, and figure out a way
//To make it stay drawn
driver->draw3DLine(vector3df(0,255,0),cam->getTarget(),mtl.AmbientColor);

bitplane · Post by **bitplane** » Sat Jun 04, 2005 2:10 pm

perhaps one of these is what you need-
http://irrlicht.sourceforge.net/phpBB2/ ... php?t=6058

XFactor · Post by **XFactor** » Sat Jun 04, 2005 4:57 pm

@discreet

I tried what you said and my game crashes.

Any other ideas?

@ bitplane
Thats not what I am looking for.

Thanks for the replies.

Midnight · Post by **Midnight** » Mon Jun 06, 2005 7:03 am

doesn't work

XFactor · Post by **XFactor** » Tue Jun 07, 2005 4:05 am

@ Midnight
Was that a question or a comment?

Midnight · Post by **Midnight** » Wed Jun 08, 2005 12:58 am

do you see a question mark in my statement?

of course not if you did that would make it a question not a statement that is the difference between a comment and a question.

not to mention context and I think it was pretty clear the context in which I wrote my comment.

I was pertaining to the above code that attempting to use the ambient lighting will not color a 3dline I have attempted this myself with no luck and have come to the conclusion that this is impossable without using a billboard, model, or other custom means.

If someone can prove me wrong please do.

XFactor · Post by **XFactor** » Wed Jun 08, 2005 2:29 am

Sorry, Sorry Midnight. I thought that you might of forgot the '?'. You thought you meant that, "OMG, it didnt work, it should have." Once again sorry.

Midnight · Post by **Midnight** » Wed Jun 08, 2005 5:50 pm

werd

Electron · Post by **Electron** » Wed Jun 08, 2005 7:49 pm

you need the axial billboard scene node someone made a while ago

Rush · Post by **Rush** » Wed Jun 08, 2005 8:00 pm

Code: Select all

SMaterial mtl;
mtl.Lighting = false;
driver->setMaterial(mtl);
//You will need to position it at the camera, and figure out a way
//To make it stay drawn
driver->draw3DLine(vector3df(0,255,0),cam->getTarget(),video::SColor(100,255,0,0));

Should work with correct color this way.

Midnight · Post by **Midnight** » Thu Jun 09, 2005 9:07 pm

It works...

Laser.rar

Midnight · Post by **Midnight** » Fri Jun 10, 2005 5:01 pm

didn't anybody take a look at my demo??