Artillery projectile trajectory

[FS-21]

• High altitude projctile capable to hit targets in high places.
• Height determined by Trajectory.Artillery.MaxHeight.
• Supported Inaccurate=yes and Ares costumization tags BallisticScatter.Max and BallisticScatter.Min.

In rulesmd.ini:

[SOMEPROJECTILE]                     ; Projectile
Trajectory=Artillery                 ; Trajectory type
Trajectory.Artillery.MaxHeight=2000  ; integer

Note: Re-used some code for Inaccurate projectiles from "arcing-fix" Phobos PR.

[github-actions[bot]]

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[NetsuNegi]

The impact point of bullet maybe have some problem, I don't know if it is caused by the vanilla game.

[NetsuNegi]

The trail when bullet has been created is same as Trajectory=Straight, I think you should also adjust the Z velocity at the time of unlimbo. The faster Trajectory.Speed means the more serious situation.

[MortonPL]

What's the difference between this and Lobber=yes on a weapon?

[Metadorius]

Eh more so, I would say maybe there's more point in continuing the arcing fix?

[FS-21]

What's the difference between this and Lobber=yes on a weapon?

Can you set a projectile height with lobber=yes? No... I still need to fix some cases but I'm busy with another PR.

[FS-21]

I want to remake it from scratch with a different approach so I close it and reopen it when I have free time for this idea.