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[quote="ace"]Perhaps what you're trying to do would work better with the activation "projectile hits" rather than "projectile passes through"?[/quote]

If possible, with both activation would be better.

Now I've been tinking about 3 arguments (speed, mode, fixed):

speed: speed ratio:
0 - Stop projectile
50 - Half speed
100 - Keep speed
200 - Double speed
...

mode:
0 - Keep angle (just accelerate or brake projectile)
1 - Reverse angle (projectile turns back, no mater the angle of the line)
2 - Bounce (as I said before)
3 - Fixed angle

fixed:
if mode = 3, the new angle of the projectile

Perhaps what you're trying to do would work better with the activation "projectile hits" rather than "projectile passes through"? Otherwise, a feature like this might come in handy, especially for things like forcefileds and such.

[quote="Jack"]Maybe I need to update the configuration files.[/quote]

Specifically ACS.cfg. You could add the extra arguments yourself, it's just text.

Doom Builder just uses unusual names for things. What it is refering to as "thing_thrust" is indeed ThrustThing. It takes up to four arguments [url=http://www.zdoom.org/wiki/index.php?title=ThrustThing]as listed on the wiki[/url], regardless of what Doom Builder says it takes.

[quote="Anakin S."]Don't you mean ThrustThing? Thing_Thrust uses a tid whereas ThrustThing thrusts whatever crosses the line.[/quote]


I'm using Doom builder 1.67, special 72 and it appears as "thing_thrust", with 2 argumments (thrust angle and thrust distance). Maybe I need to update the configuration files.

Don't you mean ThrustThing? Thing_Thrust uses a tid whereas ThrustThing thrusts whatever crosses the line.

I work ALMOST all right using the special "thing_trust" in the line, activated when projectile passes over, but is not perfect...

My idea is an line special that return the projectile at the same speed and at a calculated angle, as if the projectile bonces in the line.

The special would be called "line_bounce", and would be based on the "thing_trust" special.

Thanks for atention