Un-ranged vs. Ranged:

I have not incorporated shell drag coefficient into this function as I don't know how yet, however the shell velocity drop in Stormworks is very low and the error is mostly negligible.

I do plan on adding drag calculation for this in the near future once I have figured it out.

Here is an example function implemented on a battle cannon on a turret:
Sight & Rangefinder: Fixed on the turret, pivoting using internal pivot
Gun elevation: Input from robotic pivot
Tilt Sensor: For measuring turret tilt (not battle cannon)

Function:

atan((30*(x/800)^2/2)/(cos((y-z)*pi/180)*x))*180/pi

• pi/180 and 180/pi:
  for converting degrees into radians and vice versa. (Stormworks trigonometry functions use Radians)
  
• x/800:
  the battle cannon shell travel time, 800 being the battle cannon shell's speed in m/s.
  
• 30:
  the shell drop due to gravity in m/s^2. (Stormworks devs decided it's 30 so it's 30)
  
• 30*(x/800)^2/2:
  shell drop vertical distance based on the shell travel time.
  
• y-z:
  the current gun elevation relative to horizon (It can be replaced with one single variable with a tilt sensor on the gun)
  
• cos((y-z)*pi/180)*x:
  the horizontal distance between the rangefinder and the target.
  
• atan((30*(x/800)^2/2)/(cos((y-z)*pi/180)*x)):
  using the calculated horizontal distance and the shell drop vertical distance to calculate the required gun elevation adjustment.

I recommend using separate pivot for gun sight and rangefinder vs. the cannon, reason being you can keep your sight and rangefinder on target.

The parameters for various weapons are provided in the official Stormworks Discord Channel.

Feel free to implement this into your creations, credits would be appreciated.

If anyone knows how the drag coefficient works please let me know so I can improve my design.