Kinetic Energy Missile - MGM-166 LOSAT #108
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added new missile type, kinetic energy missiles along with a new ammo type for them to use. this ammo has most of the peneratration values fudged to give the correct losat pen values without needing to have the missile to fly at 1500m/s.
-Fixed ammo Velocity/Pen values, although slightly hardcoded I dont think it'll matter too much since this is the only weapon that should be using this ammo type. -Spelling issues -Removed dtx 80 files -Using new filepath for models and materials -Fixed hitboxes on cap models
lua/acf/entities/ammo_types/lrp.lua
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| @@ -0,0 +1,62 @@ | |||
| local ACF = ACF | |||
| local Types = ACF.Classes.AmmoTypes | |||
| local Ammo = Types.Register("LRP", "AP") | |||
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For organizational reasons (historical too), could the LOSAT use the APFSDS ammo type?
You might have a good reason for registering LRP, I'm just curious.
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Originally I did try to use APFSDS, but when I last tested that, it required the missile to fly an insane speeds to get the correct values for penetration. I opted to let it fly slightly slower than it would in real life (~1100 m/s compared to ~1500m/s) to allow for some form of mid course corrections whilst keeping its accurate penetration values. In order to do that I needed to scale the values for the penetration up to compensate for slower speeds, so I felt like a new ammo type would be better to not interfere with the original.
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What were the insane speeds? Most APFSDS rounds atleast out of cannons tend to only need realistic APFSDS speeds for their penetration (e.g. 1500m/s).
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I don't remember the exact number but it was going very very fast, faster than it currently going right now to get the correct values. But considering that the largest maps are ~1.5km, having a guided missile cross the map within less than a second doesn't really make sense as you have no time to guide it. I don't really see the fun in adding a missile that cant maneuver, may as well just use a cannon. I figured a new ammo type that fudged the values would allow the missile to be fast, yet somewhat maneuverable whilst retaining its accurate penetration values would have been the best course.
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Most ACF maps are roughly 800m across (using the conversion rate of 1u = 39.37m which is standard for ACF).
I think the missile is cool, but it's always been a pain point integrating long ranged munitions into 800m maps.
IIRC it was meant to be used at long range, outside the effective range of many tank guns at the time.
Would it not be possible to use APFSDS, go at the required speeds, but turn slightly faster to compensate?
Reducing speed leads to you having to make this new ammo type. Increasing turn rate doesn't.
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Like I said I did originally use APFSDS but I encountered problems with it flying that fast, the missile would teleport out of map bounds if it was maneuvered too quickly, but I think I could spend more tuning that if I wanted to go down that path again. But the issue isn't of maneuverability its time, there is no reaction time when it flies that quickly. Besides the APFSDS would provide the wrong info on the box, The projectile mass would only be the calculated penetrator rod mass instead of the entire missile mass, leading to display a way higher speed than it would have. I agree that LOSAT was intended for long range engagements, however there are videos of the test firings at 750m and 800m showing that it still does have utility given the short range. Overall while APFSDS is similar to the new LOSAT ammo they are not the same. LOSAT is essentially a penetrator rod strapped to a rocket booster with no discarding sabot.
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Just how fast was it flying? I don't believe that should happen with 1500m/s top speed. In the first place missiles setpos, but if you mean teleportation out of the map instantly, that's more like 5000m/s which is not where the ideal penetration for APFSDS lies.
Would you mind pushing a commit with it using APFSDS to show the issue? I can deal with it any time today but not for the rest of the week.
Looking at online recordings of it, it is not that fast starting out. It burns for a long time but it only reaches its peak performance after a while. Yes, it can be used in short range, but if the goal is only to get them on target, you would still be able to control it while it accelerates.
The display speed for missiles in general is already inaccurate. The display of the mass should not take precedence over the functionality of the projectile.
For all intensive purposes LRP and APFSDS are usually the same. The lack of fins doesn't change that much since the bullet is "created" at impact.
Adds MGM-166 LOSAT to be used in three different launchers (1x, 2x, 6x)
I've done my best to try to balance the missile around its correct pen values while making the missile work within the constraints of the map sizes.
The only problems I know of are the incorrect penetration and muzzle velocity values on the ammobox, I've added a note on the ammo type detailing the correct values.
Required to function: https://github.com/ACF-Team/ACF-3/pull/466