Linerenderer equivalent in UE4

[Jambax]

@FalconKrunch;252321

Yeah I can’t use the debug lines for this as they don’t appear in production builds.
But the particle effect properties aren’t accessible from C++ so I’m not sure if it supports me setting the target vector manually from code.

They are, I’m using them:

ParticleSystem->SetBeamEmitterSourceLocation
ParticleSystem->SetBeamEmittertargetLocation
ParticleSystem->SetBeamEmitterSourceTangent
ParticleSystem->SetBeamEmitterTargetTangent
ParticleSystem->SetBeamEmitterSourceLocation
ParticleSystem->SetBeamEmitterTargetStrength

You feed an Emitter Index and Beam Index to each one. It’s not the easiest thing to set-up, but it does work. These functions also exist in Blueprint for ease-of-use/prototyping. Here’s how I’m using them for something.

Note however, that the Tangents are based on Bezier Math. It’s therefore easier to create a Spline Component, and then set the tangents to the same tangents as the Spline, like so (as a FOR Loop, hence the ‘i’):

                PS->SetBeamSourceTangent(0, InputSC->GetWorldTangentAtDistanceAlongSpline(InputSC->GetDistanceAlongSplineAtSplinePoint(i)), i);
		PS->SetBeamTargetTangent(0, InputSC->GetWorldTangentAtDistanceAlongSpline(InputSC->GetDistanceAlongSplineAtSplinePoint(i + 1))), i);