Oolite Bulletins

Griff wrote:

Hi no, that won't work, you can't specify shaders in 'materials =' they have to go inside 'shaders =', something like this:-

I can have a go at updating the rocket shader example to work again this weekend and i'll try and write out a guide that explains how i'm doing this engine heat effect in the shaders in my shipset, it's not a very complex effect, just a matter of mixing some extra glowmaps onto the ship

Seems to be a bit quiet at work so i had a quick look at the oxp, well, what a balst from the past! i grabbed the "Griff Rocket Shader Test - Engine Level Lights.zip file" from http://www.box.com/shared/h95rd0n25x (listed as Griff Rocket Example 2 in the first post of this thread), if you change the shipdata.plist to this
Code:
{
// ++++++ Griff Rocket Example ++++++
"griff_rocket" =
{
like_ship = "cobra3-trader";
exhaust = ("0 0 -49.0 10.0 10.0 25.0");
model = "griff_rocket.dat";
name = "Griff Rocket";
roles = "griff_rocket";
smooth = true;
shaders =
{
"griff_rocket_unshaded_diffuse.png" =
{
vertex_shader = "ahruman-generic.vertex";
fragment_shader = "griff_rocket.fragment";
textures =
(
"griff_rocket_shaded_diffuse.png",
"griff_rocket_enginelevel_glowmap.png",
"griff_rocket_effects.png"
);
uniforms =
{
tex0 = { type = texture; value = 0; };
tex1 = { type = texture; value = 1; };
tex2 = { type = texture; value = 2; };
time = "universalTime";
engine_level = "speedFactor";
hull_heat_level = "hullHeatLevel";
laser_heat_level = "laserHeatLevel";
};
};
};
};
}

(Sorry, i had to change it from XML to Openstep format - i could't remember how to do the XML code)
and also change the script.js file in the Config folder to this:
Code:
// Configuration -- customize here
this.role = "griff_rocket";
this.count = 3;

// Standard attributes
this.name = "Spawn-" + this.role;
this.author = "Jens Ayton";
this.copyright = "This script is hereby placed in the public domain.";
this.version = "1.0.1";
this.description = "Script to make several ships of a given role appear at the witchpoint after every jump."


this.shipWillLaunchFromStation = function()
{
system.legacy_addSystemShips(this.role, this.count, 1.0);
log("testscript.spawn", "Generated " + this.count + " " + this.role + " for testing purposes.");
}

it should get the oxp working again, although it still used the macro lighting code that we shouldn't be using!
When you launch the ammended script.js will spawn 3 rocket example ships near the station.
The next step i think will be to change the fragment shader to the normal map one that uses the Function to calculate lighting and re-post the oxp

How do you want to do the engine glows for your ship MiMoriarty, the current method is to just use the red and blue channels in a texture map recolour them orange and cyan in the shader and mix them into the texture - you don't have to do it this way - a simpler method would just be to paint out your final engine glow as a standard texture and add this onto the ship without having to mess around with single colour channels etc
here's a post where i seem to be trying to explain the single channel effects texture painting method
viewtopic.php?f=4&t=3460&start=285

MiMoriarty wrote:

...Now that it works i'd start learning how IT really WORKS using Ahruman and Griff's code and try to make it on my own shaders for other effect.

if you're on a Windows PC, AMD have a really cool free program called Rendermonkey and i think there's something available for free from Apple if you're on a Mac (might be part of some sort of development suite of programs)