// EVALUATE //
//
public float Evaluate(AmpsEmitter ownerEmitter, int particleIndex)
{
float returnValue = 0;
// If a particle related curve input was chosen but particle data is not available
// then we just return 0 like a champ. (index == -1, typically when the owner
// property is in an emitter property stack where particle data and index is meaningless.)
//
// TODO: We might need a mechanic to show warnings.
if (AmpsHelpers.isParticleRelatedInput(curveInput) && particleIndex < 0)
{
return(0);
}
float finalCurveInput = GetCurveInput(ownerEmitter.blueprint, particleIndex);
// Remap output.
returnValue = Mathf.Lerp(outputRangeMin, outputRangeMax, curve.Evaluate(finalCurveInput));
return(returnValue);
}
// EVALUATE //
//
public Vector4 Evaluate(AmpsEmitter ownerEmitter, int particleIndex)
{
Vector4 returnValue = Vector4.zero;
// If a particle related curve input was chosen but particle data is not available
// then we just return 0. (index == -1, typically when the owner property is in an
// emitter property stack where particle data and index is meaningless.)
//
// TODO: We might need a mechanic to show warnings.
if (AmpsHelpers.isParticleRelatedInput(curveInput) && particleIndex < 0)
{
return(Vector4.zero);
}
float finalCurveInput = GetCurveInput(ownerEmitter.blueprint, particleIndex);
// Remap output.
returnValue.x = Mathf.Lerp(outputRangeXMin, outputRangeXMax, curveX.Evaluate(finalCurveInput));
returnValue.y = Mathf.Lerp(outputRangeYMin, outputRangeYMax, curveY.Evaluate(finalCurveInput));
returnValue.z = Mathf.Lerp(outputRangeZMin, outputRangeZMax, curveZ.Evaluate(finalCurveInput));
returnValue.w = Mathf.Lerp(outputRangeWMin, outputRangeWMax, curveW.Evaluate(finalCurveInput));
return(returnValue);
}
// MANAGE SAMPLING //
//
// Does the actual sampling.
override public void ManageSampling(int particleIndex)
{
int finalParticleIndex = (particleIndex < 0 ? 0 : particleIndex);
AmpsHelpers.eCurveInputs wantedProperty = (AmpsHelpers.eCurveInputs)property.GetValue();
bool isWantedPropertyParticleRelated = AmpsHelpers.isParticleRelatedInput(wantedProperty);
bool shouldIndeedSample = (particleIndex < 0 && ShouldSample()) || (particleIndex >= 0 && ShouldSample(particleIndex));
if (wasParentChecked == false)
{
if (ownerBlueprint.ownerEmitter.transform.parent != null)
{
parentEmitter = ownerBlueprint.ownerEmitter.transform.parent.GetComponent <AmpsEmitter>();
}
wasParentChecked = true;
}
if (sampleFromParent.GetValue())
{
// Leave if it's not time yet to sample.
if (shouldIndeedSample == false)
{
return;
}
// INVALID SAMPLE: Parent doesn't exist or has no emitter component or no blueprint.
if (parentEmitter == null ||
parentEmitter.blueprint == null)
{
isValidSample[finalParticleIndex] = false;
return;
}
// Try to get valid parent particle index.
if (parentParticleIndices[finalParticleIndex] < 0)
{
parentParticleIndices[finalParticleIndex] = parentEmitter.GetRandomParticleIndex(ownerBlueprint.ownerEmitter.particleIds[finalParticleIndex]);
}
// TODO: Invalid sample case: particle id at current particle index is different, ie we did lose
// original particle index as it got replaced by another.
// INVALID SAMPLE: Invalid parent particle index.
//
// TODO: We might have an invalid parent particle index but we might not need it anymore since
// we already got a valid sample from it before and we don't need a new one for the time being.
if (parentParticleIndices[finalParticleIndex] < 0)
{
isValidSample[finalParticleIndex] = false;
return;
}
// INVALID SAMPLE: Parent particle is dead.
if (parentParticleIndices[finalParticleIndex] >= 0 &&
parentEmitter.particleMarkers.IsActive(parentParticleIndices[finalParticleIndex]) == false)
{
parentParticleIndices[finalParticleIndex] = -1;
isValidSample[finalParticleIndex] = false;
return;
}
// INVALID SAMPLE: Asking for particle specific data but have no valid particle index.
if (isWantedPropertyParticleRelated && parentParticleIndices[finalParticleIndex] < 0)
{
return;
}
samples[finalParticleIndex] = AmpsHelpers.GetSystemProperty(parentEmitter.blueprint,
parentParticleIndices[finalParticleIndex],
wantedProperty);
isValidSample[finalParticleIndex] = true;
}
else
{
// Leave if it's not time yet to sample.
if (shouldIndeedSample == false)
{
return;
}
// INVALID SAMPLE: Asking for particle specific data but have no valid particle index.
if (isWantedPropertyParticleRelated && finalParticleIndex < 0)
{
return;
}
samples[finalParticleIndex] = AmpsHelpers.GetSystemProperty(ownerBlueprint,
finalParticleIndex,
wantedProperty);
isValidSample[finalParticleIndex] = true;
}
}