Hi all.
i have a question about the aim distance.
there is a function in lua that can get the actor's AimAngle. however is there anyway to know the aim distance of an actor?

I've searched around in this forum and i found the actor.ViewPoint. it is said that this variable represents the aim position of the actor, but in game i found that its value is not what i supposed it to be:
When i move the mouse to the right side of the actor, the console shows that the aim offset (which is actor.ViewPoint - actor.EyePos) is something close to (50, 0) and that seems correct. But if i move the mouse farther to the right, this aim offset doesn't grow to (200, 0) or something like that. it seems that the X and Y of this aim offset will never exceed 70 though my weapon's SharpLength is more than 300 pixels and i'm aiming at long range targets.

Actually i'm modding a adjustable-initial-velocity grenade launcher. The grenade will have higher initial velocity if i aim farther and vice versa so the weapon can be used in various situations. Now i can only use SceneMan:GetOffset(0) + Vector(320, 240) to get the center position of the camera ( i have my game running with resolution of 640*480 and i don't know how to get those data in lua script so i just hard-coded them ) and then use the SceneMan:ShortestDistance() with the actor's eye position to get the distance for reference of the initial velocity of the grenade. it does work in normal games now, but i don't think it will be when in multi-player situations in which each player has its separated screen area.

So i'd like to know if there is anyway to get the aim distance of an actor in lua script?

I can't say what you are doing wrong without seeing any code, so I wrote you a weapon script that calculates the distance between the aim point and the muzzle every time the weapon is fired:

Thanks for the codes. I'm modding the Coalition's Revolver cannon.
Today i did several tests and i figured out that the actual reason why the ViewPoint i get in the grenade's Create() function is incorrect:
the Revolver cannon has a recoil effect when it fires. and the camera will be dragged back. which cause the ViewPoint to be much closer than what i want.

Any way to disable that recoil? i found that the Revolver cannon has already used the tricks of using an AEmitter to spawn the actual shots instead of the HDFirearm itself, just like the Heavy Sniper Rifle. that sniper rifle works good, no recoil at all. but no matter how i change the ini, the revolver cannon's recoil is still there.

Here is my ini and lua.

After another tens of tests, i finally got the line that caused the problem:

in the definition of Revolver Cannon Shot, there is :


And i guess it is because this AEmitter got hit by the gun or actor or whatever. then that force is impact on the actor finally.
After changing that line, the problem got fixed and now, i finally have the gun works perfectly.
Thanks again to your help.