public void GenerateLightningBoltStandard(LightningBolt bolt, Vector3 start, Vector3 end, int generation, int totalGenerations, float offsetAmount, LightningBoltParameters p)
{
if (generation < 1)
{
return;
}
LightningBoltSegmentGroup group = bolt.AddGroup();
group.Segments.Add(new LightningBoltSegment {
Start = start, End = end
});
// every generation, get the percentage we have gone down and square it, this makes lines thinner
float widthMultiplier = (float)generation / (float)totalGenerations;
widthMultiplier *= widthMultiplier;
Vector3 randomVector;
group.LineWidth = p.TrunkWidth * widthMultiplier;
group.Generation = generation;
group.Color = new Color32(byte.MaxValue, byte.MaxValue, byte.MaxValue, (byte)(255.0f * widthMultiplier));
group.EndWidthMultiplier = p.EndWidthMultiplier * p.ForkEndWidthMultiplier;
if (offsetAmount <= 0.0f)
{
offsetAmount = (end - start).magnitude * p.ChaosFactor;
}
while (generation-- > 0)
{
int previousStartIndex = group.StartIndex;
group.StartIndex = group.Segments.Count;
for (int i = previousStartIndex; i < group.StartIndex; i++)
{
start = group.Segments[i].Start;
end = group.Segments[i].End;
// determine a new direction for the split
Vector3 midPoint = (start + end) * 0.5f;
// adjust the mid point to be the new location
RandomVector(bolt, ref start, ref end, offsetAmount, p.Random, out randomVector);
midPoint += randomVector;
// add two new segments
group.Segments.Add(new LightningBoltSegment {
Start = start, End = midPoint
});
group.Segments.Add(new LightningBoltSegment {
Start = midPoint, End = end
});
CreateFork(bolt, p, generation, totalGenerations, start, midPoint);
}
// halve the distance the lightning can deviate for each generation down
offsetAmount *= 0.5f;
}
}
public void GenerateLightningBoltPath(LightningBolt bolt, Vector3 start, Vector3 end, LightningBoltParameters p)
{
if (p.Points.Count < 2)
{
Debug.LogError("Lightning path should have at least two points");
return;
}
int generation = p.Generations;
int totalGenerations = generation;
float offsetAmount, d;
int smoothingFactor = p.SmoothingFactor - 1;
Vector3 distance, randomVector;
LightningBoltSegmentGroup group = bolt.AddGroup();
group.LineWidth = p.TrunkWidth;
group.Generation = generation--;
group.EndWidthMultiplier = p.EndWidthMultiplier;
group.Color = Color.white;
p.Start = p.Points[0] + start;
p.End = p.Points[p.Points.Count - 1] + end;
end = p.Start;
for (int i = 1; i < p.Points.Count; i++)
{
start = end;
end = p.Points[i];
distance = (end - start);
d = Mathf.Sqrt(distance.sqrMagnitude);
if (p.ChaosFactor > 0.0f)
{
if (bolt.CameraMode == CameraMode.Perspective)
{
end += (d * p.ChaosFactor * RandomDirection3D(p.Random));
}
else if (bolt.CameraMode == CameraMode.OrthographicXY)
{
end += (d * p.ChaosFactor * RandomDirection2D(p.Random));
}
else
{
end += (d * p.ChaosFactor * RandomDirection2DXZ(p.Random));
}
distance = (end - start);
}
group.Segments.Add(new LightningBoltSegment {
Start = start, End = end
});
offsetAmount = d * p.ChaosFactor;
RandomVector(bolt, ref start, ref end, offsetAmount, p.Random, out randomVector);
if (ShouldCreateFork(p, generation, totalGenerations))
{
Vector3 branchVector = distance * p.ForkMultiplier() * smoothingFactor * 0.5f;
Vector3 forkEnd = end + branchVector + randomVector;
GenerateLightningBoltStandard(bolt, start, forkEnd, generation, totalGenerations, 0.0f, p);
}
if (--smoothingFactor == 0)
{
smoothingFactor = p.SmoothingFactor - 1;
}
}
}