Question by Noel9386 · Aug 07, 2016 at 09:02 PM · c#physics 3d

Predictive Trajectory Issues

Hello,

I have a snipped of code I am using from Here. The issues I am having with it are that it doesn't grow like it should be, and the line falls off a lot quicker than It should be.

What it is doing right now is once I press the button to start charging the shot, the line shows up, grows a little and then stops. When I actually take the shot the arrow flies well over the projected path.

Here is the code adapted to what I figured would work.

 if (Input.GetMouseButton(0))
         {
 
             player.sizePercent += player.drawSpeed;//name is a hold over from the old reticule
             player.sizePercent = Mathf.Clamp01(player.sizePercent);//cap at 1 for the time being
 
             Vector3[] segments = new Vector3[numVerts];//new segment array
 
             segments[0] = player.arrowObject.transform.position;//first segment starts at arrow position
 
             Vector3 segVelocity = player.arrowObject.transform.forward * (player.force * player.sizePercent) * Time.deltaTime;
             //supposed to increase according to force value. player.foce starts at zero then adjust according to the the percent
 
             hitObject = null;
 
             for (int i = 1; i < numVerts; i++)
             {
                 float segTime = (segVelocity.sqrMagnitude != 0) ? segScale / segVelocity.magnitude : 0;
                 segVelocity += Physics.gravity * Time.deltaTime;
                 RaycastHit hit;
                 if (Physics.Raycast(segments[i - 1], segVelocity, out hit, segScale))
                 {
                     hitObject = hit.collider;
                     segments[i] = segments[i - 1] + segVelocity.normalized * hit.distance;
                     segVelocity -= Physics.gravity * (segScale - hit.distance) / segVelocity.magnitude;
                 }
                 else
                 {
                     segments[i] = segments[i - 1] + segVelocity * Time.deltaTime;
                 }
             }
 
             for (int i = 0; i < numVerts; i++)
             {
                 line.SetPosition(i, segments[i]);
             }
         }

Does anyone have an idea as to how I would go about fixing it to work how I want it to work?

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