Perfect angle force?

**carocrazy132** · 09-02-2010

I've been making some turrets recently, I've noticed they tend to wobble a bit when they get to their destination angle. Does every time of prop with every mass have a perfect amount of force that will send it to it's destination immediately with little to no wobble? Is there an algorithm for figuring out that perfect amount of force?

**Drunkie** · 09-02-2010

What formula are you using? The only one I have used is:

Code:

A = E:angles() * Mul
E:applyAngForce( A + $A * 5 )

Have a look at this: http://www.wiremod.com/forum/express...pplyforce.html

Although that tutorial is old, I'd say it is still useful. You should really look into applyTorque though because it has many advantages over this.

**Divran** · 09-02-2010

Code:

TargetAngle = Whatever you want
E = Your entity
Torque = E:toLocal(rotationVector(quat(TargetAngle)/quat(E))+E:pos())
E:applyTorque((Torque*1000-E:angVelVector()*20)*E:inertia())

1: Copy
2: Paste
3: Edit TargetAngle & E
4: ???
5: Profit

**carocrazy132** · 09-02-2010

Divran - I deem you king of epic copypasta. Every time you help me I never have to do any work XD. Works like a dream, thanks again.

**Axelnemeth** · 09-03-2010

I was about to post, when I saw Divran's code.
My turret always flipped when I crossed the right side of the map with my mouse.
Too bad I cannot fathom what the quaternion stands for.

kudos