Creating a new sample generator

The sample generator fills a list of angles that other modules use to generate the direction rays.

This is an example of the default generator:

#pragma once

#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Object.h"
#include "Atoms/Agent.h"
#include "AtomsUnreal/Public/ContextSteering/AtomsContextSteeringSampleGenerator.h"
#include "AtomsContextSteeringMySampleGenerator.generated.h"

UCLASS(DefaultToInstanced, editinlinenew, DisplayName = "My Radial Sample Generator")
class UAtomsContextSteeringMySampleGenerator : public UAtomsContextSteeringSampleGenerator
{
	GENERATED_BODY()

public:

	UAtomsContextSteeringMySampleGenerator();

	virtual void GenerateSamples(Atoms::Agent* Agent) override;
};

#include "AtomsContextSteeringMySampleGenerator.h"
#include "Atoms/Agent.h"

UAtomsContextSteeringMySampleGenerator::UAtomsContextSteeringMySampleGenerator() : UAtomsContextSteeringSampleGenerator()
{

}

void UAtomsContextSteeringMySampleGenerator::GenerateSamples(Atoms::Agent* Agent)
{
	Atoms::ContextSteeringData& contextData = Agent->contextSteeringData();
	contextData.setNumSamples(contextData.dynamicSamples > 0 ? contextData.dynamicSamples : NumSamples);
	contextData.distance = MaxDistance;
	auto& sampleDirections = contextData.samples;
	auto& danger = contextData.danger;

	AtomsMath::Vector3 upVector(0.0, 1.0, 0.0);
	const AtomsMath::Vector3& AgentDirection = Agent->direction()->get();
	contextData.direction = AgentDirection;
	contextData.up = Agent->up()->get();

	AtomsMath::Rand48 randVal(Agent->groupId()->get());
	float angleStep = 2.0f * M_PI / static_cast<float>(NumSamples);
	for (int32 j = 0; j < NumSamples; ++j)
	{
		float randangle = j != 0 ? randVal.nextf(-0.1, 0.1) * angleStep : 0.0;
		float value = static_cast<float>(j) * angleStep + randangle;
		sampleDirections[j] = value;
	}
	// reset the dynamic samples since we have generated them
	contextData.dynamicSamples = 0;
}