reflective sphere - GameCreators Forum

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Sir Ollie

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Joined: 29th Sep 2004

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Posted: 4th Jun 2005 00:03 Edited at: 4th Jun 2005 00:05

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I am trying to make a sphere look like very reflective metal.

I already know about set spheremapping on and stuff like that but it doesnt work

here is the code:

+ Code Snippet

make camera 1
autocam off

make object sphere 1,100
position object 1,0,0,1000
load image "water1.bmp",1
texture object 1,1
set sphere mapping on 1,1
set object specular 1,1
set object light 1,20000

clone object 2,1
position object 2,0,-350,1000
scale object 1,300,300,300
scale object 2,300,300,300

load object "space station\ss.3ds",3
load image "space station\space station.jpg",2
texture object 3,2
scale object 3,30,30,30
set object cull 3,0
set object light 3,0


do
   zrotate object 1, object angle z(1)-0.1
   zrotate object 2,object angle z(2)+0.1
   control camera using arrowkeys 1,1,1
loop

thanks for any help

"Use the force you must..."

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The Nerd

20

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Joined: 5th Jun 2004

Location: Denmark

Posted: 4th Jun 2005 00:56 Edited at: 4th Jun 2005 00:59

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You forgot the SYNC command

With the sync command you simply updating the screen. I have set it so it will update the screen with 60 images per second as you can see in the line "Sync Rate 60".
if you change it to 0 it will update the screen as fast as your computer can

Your code should look like this:

+ Code Snippet

sync on
sync rate 60
hide mouse

make camera 1
autocam off

make object sphere 1,100
position object 1,0,0,1000
load image "water1.bmp",1
texture object 1,1
set sphere mapping on 1,1
set object specular 1,1
set object light 1,20000

clone object 2,1
position object 2,0,-350,1000
scale object 1,300,300,300
scale object 2,300,300,300

load object "space stationss.3ds",3
load image "space stationspace station.jpg",2
texture object 3,2
scale object 3,30,30,30
set object cull 3,0
set object light 3,0


do
   zrotate object 1, object angle z(1)-0.1
   zrotate object 2,object angle z(2)+0.1
   control camera using arrowkeys 1,1,1
sync
loop

Hope that helped!

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Sir Ollie

19

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Joined: 29th Sep 2004

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Posted: 4th Jun 2005 20:05

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o.k my code lok s like this:

+ Code Snippet

sync on
sync rate 0
make camera 1
autocam off
hide mouse

make object sphere 1,100
position object 1,0,0,1000
load image "water1.bmp",1
texture object 1,1
set sphere mapping on 1,1
set object specular 1,1
set object light 1,2000

clone object 2,1
position object 2,0,-350,1000
scale object 1,300,300,300
scale object 2,300,300,300

load object "space station\ss.3ds",3
load image "space station\space station.jpg",2
texture object 3,2
scale object 3,30,30,30
set object cull 3,0
set object light 3,0


do
   zrotate object 1, object angle z(1)-0.1
   zrotate object 2,object angle z(2)+0.1
   control camera using arrowkeys 1,1,1
   sync
loop

but i still get two dark spheres with one copy of the texture fixed on the inside, and a texture going round on the outside.

no reflections

"Use the force you must..."

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The Nerd

20

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Joined: 5th Jun 2004

Location: Denmark

Posted: 4th Jun 2005 20:50

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Well i can't really help you with that one:-( Sorry about that...

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Dodo

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Joined: 8th Aug 2004

Location: eating lunch

Posted: 5th Jun 2005 01:34

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well, you could try using reflection shading. It depends on your graphics card and it can look quite bad if used badly but it is also quite effective when used properly

Part of solving the problem is actually noticing that the problem is there in the first place

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Mr Bigger

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Joined: 31st Jan 2005

Location: was here!

Posted: 5th Jun 2005 23:06 Edited at: 6th Jun 2005 00:01

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To give your sphere more highlight just set the object specular to
something higher like "Set Object Specular 1,RGB(128,128,128)".With the right textures and practice this can make a convincing reflection but not perfect as people dont really focus on the reflection anyways.I dont think the reflection shading will look very good on a sphere as DBP uses a stencil technique that only renders a single direction of reflection.In other words the reflection will not appear to wrap the sphere.Hmm,maybe you could use cube mapping to make a shiny metal ball.

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