private void Update()
{
// Calculate some stuff about the start and end positions.
Vector3 posDelta = destination.position - transform.position;
float distance = posDelta.magnitude;
Vector3 startControl = transform.position + bezierDistanceFromSource * transform.forward;
Vector3 endControl = destination.position + bezierDistanceFromDest * destination.forward;
// Some debugging.
Debug.DrawLine(transform.position, startControl, Color.red);
Debug.DrawLine(destination.position, endControl, Color.cyan);
// Calculate the number of divisions needed.
int numDivisions = (int)(divisionsPerUnit * distance) + 1;
lineRenderer.positionCount = numDivisions;
// Set the start and end point positions.
lineRenderer.SetPosition(0, transform.position);
lineRenderer.SetPosition(numDivisions - 1, destination.position);
// Set the positions along the Bezier curve.
float tInc = 1f / numDivisions;
for (int i = 1; i < numDivisions - 1; ++i)
{
lineRenderer.SetPosition(i, MathTools.CalculateBezier(tInc * i, transform.position, startControl, endControl, destination.position));
}
}
private void Update()
{
// Don't do anything if off or no destination is set.
if (isOff || destination == null)
{
lineRenderer.positionCount = 0;
return;
}
// Calculate some stuff about the start and end positions.
Vector3 desToSrc = transform.position - destination.position;
float distance = desToSrc.magnitude;
float strength = (bezierDistance * Mathf.Clamp01(distance + 0.00001f));
// Smaller displacement for smaller distance.
// For the start point, use the forward direction to determine it.
Vector3 startControl = transform.position + strength * transform.forward;
// For the end control point, use the direction to the src to determine it.
//Vector3 endControl = destination.position + strength * desToSrc.normalized;
// End control point is not used.
// Middle control point results in much rounder and smoother curve.
Vector3 middleControl = (transform.position + destination.position) / 2.0f;
middleControl += strength * Vector3.ProjectOnPlane(transform.forward, desToSrc.normalized);
// Some debugging.
Debug.DrawLine(transform.position, startControl, Color.red);
Debug.DrawLine(destination.position, middleControl, Color.cyan);
//Debug.DrawLine(destination.position, endControl, Color.blue);
// Calculate the number of divisions needed.
int numDivisions = (int)(divisionsPerUnit * distance) + 1;
lineRenderer.positionCount = numDivisions;
// Set the start and end point positions.
lineRenderer.SetPosition(0, transform.position);
lineRenderer.SetPosition(numDivisions - 1, destination.position);
// Small optimization, calculate out here only once for all the points.
// Note: Speed is negated so that positive speed values goes toward dest.
float noiseX = -speed * Time.time;
// Set the positions along the Bezier curve.
float tInc = 1f / numDivisions;
for (int i = 1; i < numDivisions - 1; ++i)
{
// Generate offset values for electricity effect.
float xOff = Mathf.PerlinNoise(noiseX, 0.0f);
float yOff = Mathf.PerlinNoise(noiseX, 0.1f);
float zOff = Mathf.PerlinNoise(noiseX, 0.2f);
// Shift noiseX sampling point by randomness amount.
noiseX += randomness;
// Re-map offset values (0, 1) => (-1, 1).
xOff = ((xOff * 2.0f) - 1.0f) * displacementStrength;
yOff = ((yOff * 2.0f) - 1.0f) * displacementStrength;
zOff = ((zOff * 2.0f) - 1.0f) * displacementStrength;
// Calculate the point on the Bezier curve.
Vector3 pnt = MathTools.CalculateBezier(tInc * i, transform.position, startControl, middleControl, destination.position);
// Apply the offsets.
pnt.x += xOff;
pnt.y += yOff;
pnt.z += zOff;
// Set the position for the line renderer.
lineRenderer.SetPosition(i, pnt);
}
}
