A_SpawnItemEx momentum for trails

[Ghastly]

Ran into a bit of a snag with A_SpawnItemEx. I was making a trail for a fast (35 speed, YES, I double-checked to make sure) projectile, so I thought I'd give it some momentum to keep up with the projectile (so it doesn't end up too spread out). X momentum was easy, but Z momentum was a little tricky, so I put (MomZ/1.2) in there, and it worked fine. The problem is, the trail is now going slightly faster than the projectile itself. I worked and looked fine, and I didn't even notice it until I lowered the alpha on the trail.

Here's the code. Projectile's speed is 35 (28 is 80% of it, so it fits in with the Z momentum):

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LACR AAABBB 1 Bright A_SpawnItemEx("LasceratorTrail", 0, 0, 0, 28, 0, (MomZ/1.2), 0, 128)

I also tried this, which worked, but had the same problem, the trail was going faster than the projectile (notice the Absolute Momentum flag):

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LACR AAABBB 1 Bright A_SpawnItemEx("LasceratorTrail", 0, 0, 0, (MomX/1.2), (MomY/1.2), (MomZ/1.2), 0, 136)

Here's a screenshot. The actual projectile has higher alpha and is plainly visible at the back of the trail:

[XutaWoo]

You do realize the trail is actually going faster, right? Try 1.0 or 0.9.

[Ghastly]

35 divided by 1.2 is 28 (same as multiplying by 0.8), actually. It had the same problem when it was just set as 28.

[Amuscaria]

Would A_SpawnItemEx work well in your situation? Try aiming up/down and see if the spawned trails fly off in random directions. Cuz it does for me.

[Ghastly]

I'm already using A_SpawnItemEx.

It seems like it's spawning the projectiles at the designated momentum away from the projectile itself, so I tried this:

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LACR AAABBB 1 Bright A_SpawnItemEx("LasceratorTrail", -28, 0, (MomZ/1.2*-1), 28, 0, (MomZ/1.2), 0, 128)

To compensate for that, and now it works fine horizontally:

But when it fires at more extreme vertical angles:


Anyone have any ideas?

Edit: Oh, no it's not being fired straight up. It's about a 50-60 degree angle.

[Ghastly]

Bump.

Anyone have any ideas?