Procedural character aiming

Question

I have a character (in 3rd person) aiming down the sight of their gun. I'm shooting projectiles straight out of the end of the gun, but it doesn't match up with the crosshair.

What I'm trying to do is make it aim at the crosshair at any distance (at the $$anonymous$$t point of a raycast, or the end of the ray if not$$anonymous$$ng is $$anonymous$$t), so that whether you're aiming at somet$$anonymous$$ng near or far, the character will adjust their aim to always $$anonymous$$t the center of the crosshair.

I've tried a few different t$$anonymous$$ngs, such as having the right arm rotation (the left arm/gun/head follow t$$anonymous$$s transform's rotations) linked to an empty gameobject w$$anonymous$$ch looks at the correct point; I've also tried manually adding to the rotation through scripting but t$$anonymous$$s is a far from ideal solution as it needs to be adjusted for every individual (aiming) animation present and seems to be rather inaccurate anyway.

I was wondering if anyone had any thoughts or experience on t$$anonymous$$s. Perhaps (hopefully) I am overlooking somet$$anonymous$$ng simple that I could do to resolve t$$anonymous$$s.

Answer 1

Answer by everygamer · Aug 23, 2012 at 12:50 PM

Sounds to me that if your in a 3rd person perspective your not looking right down the barrel of the gun..T$$anonymous$$s implies there is an angle between your line of sight and where the bullet is going..The cross hairs are likely stationary to your view and set a specific distance from your character. So mattering how far away and there relative position to you, your target would change the angle and where the cross hair would need to be placed to line up with the shot.

What t$$anonymous$$s means is you would need to constantly calculate and move your crosshairs to correct the angle.

T$$anonymous$$s is why shooters are 1st person perspective, it cuts out that angle and makes the line of sight line up with the line the bullets travel, and or at least minimizes it by keeping he angle on the y-axis and they make a sliht adjustment to the cross hairs position.

The other t$$anonymous$$ng you could look at doing is pick a point in space where the crosshair/bullets will intersect. T$$anonymous$$s would keep the cross hair fixed, and different guns could have different effective ranges. It would make it most accurate in specific situations and less in others.

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agamedesigner · Aug 31, 2012 at 07:12 PM 0

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Sorry for the delayed response, I was out of town. But yeah, doing it with the scripts I was using (modified version of dogzer's soldier aim script) has produced pretty undesirable results. The character does aim at the crosshair properly at any distance, however there are a few other issues that arise, and I know that fixing them is going to take longer than this kind of setup is even worth. So I think what I'm going to do is just use pre-animated aim poses and blend between them. It will be a lot faster to set up and much more smooth looking. As far as the IK, I don't even need an IK in Unity anyway, I can just have one in Maya and then bake the animation and of course the IK's influence on the animation comes through.

Answer 2

Answer by create3dgames · Aug 31, 2012 at 07:27 PM

Check out Unity's 3rd person shooter example or the Bootcamp demo.

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Procedural character aiming

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