#include <kurator/universe/TurretType.h>

#include <algorithm>
#include <cmath>


namespace kurator
{
namespace universe
{


double
TurretType::effective_damage(const double distance) const
{
	const auto overflow = distance - optimal_range;
	const auto falloff = std::max(0.0, overflow / optimal_range / falloff_modifier);
	return base_damage * std::round(std::pow(falloff_intensity, std::pow(falloff, 2)) * 1000) / 1000;
}


double
TurretType::effective_range() const
{
	const double target = std::log2(0.01) / std::log2(falloff_intensity);
	const double one_percent_falloff = target * falloff_modifier * optimal_range;
	return one_percent_falloff + optimal_range;
}


}  // namespace universe
}  // namespace kurator