StarSystemRandomGenerator Class Reference

#include <StarSystemGenerator.h>

Inheritance diagram for StarSystemRandomGenerator:

Collaboration diagram for StarSystemRandomGenerator:

Public Member Functions
virtual bool	Apply (Random &rng, RefCountedPtr< Galaxy > galaxy, RefCountedPtr< StarSystem::GeneratorAPI > system, GalaxyGenerator::StarSystemConfig *config)
fixed	CalcBodySatelliteShellDensity (Random &rand, SystemBody *primary, fixed &discMin, fixed &discMax)
SystemBody *	MakeBodyInOrbitSlice (Random &rand, StarSystem::GeneratorAPI *system, SystemBody *primary, fixed min, fixed max, fixed discMax, fixed discDensity)
void	PickPlanetType (SystemBody *sbody, Random &rand)
Public Member Functions inherited from StarSystemGeneratorStage
virtual	~StarSystemGeneratorStage ()
virtual bool	Apply (Random &rng, RefCountedPtr< Galaxy > galaxy, RefCountedPtr< StarSystem::GeneratorAPI > system, GalaxyGenerator::StarSystemConfig *config)=0
Public Member Functions inherited from GalaxyGeneratorStage
virtual	~GalaxyGeneratorStage ()
virtual void	ToJson (Json &jsonObj, RefCountedPtr< Galaxy > galaxy)
virtual void	FromJson (const Json &jsonObj, RefCountedPtr< Galaxy > galaxy)

Static Public Attributes
static constexpr uint32_t	BODY_SATELLITE_SALT = 0xf5123a90

Additional Inherited Members
Static Public Member Functions inherited from StarSystemLegacyGeneratorBase
static void	PickAtmosphere (SystemBody *sbody)
static void	PickRings (SystemBodyData *sbody, bool forceRings=false)
Protected Member Functions inherited from StarSystemLegacyGeneratorBase
fixedf< 48 >	CalcHillRadius (SystemBody *sbody) const
Protected Member Functions inherited from GalaxyGeneratorStage
	GalaxyGeneratorStage ()
void	AssignToGalaxyGenerator (GalaxyGenerator *galaxyGenerator)
Protected Attributes inherited from GalaxyGeneratorStage
GalaxyGenerator *	m_galaxyGenerator
Static Protected Attributes inherited from StarSystemLegacyGeneratorBase
static const fixed	starMetallicities []
static const StarTypeInfo	starTypeInfo []

Member Function Documentation

Apply()

bool StarSystemRandomGenerator::Apply ( Random &  rng, RefCountedPtr< Galaxy >  galaxy, RefCountedPtr< StarSystem::GeneratorAPI >  system, GalaxyGenerator::StarSystemConfig *  config  )

virtual

Implements StarSystemGeneratorStage.

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CalcBodySatelliteShellDensity()

fixed StarSystemRandomGenerator::CalcBodySatelliteShellDensity	(	Random &	rand,
		SystemBody *	primary,
		fixed &	discMin,
		fixed &	discMax
	)

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MakeBodyInOrbitSlice()

SystemBody * StarSystemRandomGenerator::MakeBodyInOrbitSlice	(	Random &	rand,
		StarSystem::GeneratorAPI *	system,
		SystemBody *	primary,
		fixed	min,
		fixed	max,
		fixed	discMax,
		fixed	discDensity
	)

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PickPlanetType()

void StarSystemRandomGenerator::PickPlanetType	(	SystemBody *	sbody,
		Random &	rand
	)

In this and following functions, we attempt to capture even a fraction of the true majesty of the infinite cosmos.

System generation is based primarily around a mass-based metric, where the total mass of a primary body determines the maximum mass of its individual satellites.

The area of a body's "orbital slice" (between itself and any neighboring bodies) informs the mass of a body to avoid obviously-unnatural configurations with high-mass bodies orbiting so closely as to perturb each others' orbits beyond what Pioneer can simulate.

A series of post-processing factors are applied to this initial maximum mass value to curve the mass factor over the entire Hill Sphere of the parent body. This reduces the incidence of "gas giant spam" and produces more perceptually-realistic arrangements of body types and masses.

Body radius and type is inferred from the mass of the body and applied based on a set of density heuristics (in PickPlanetType), and remaining body parameters are set to complete body generation.

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Member Data Documentation

BODY_SATELLITE_SALT

constexpr uint32_t StarSystemRandomGenerator::BODY_SATELLITE_SALT = 0xf5123a90

staticconstexpr

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The documentation for this class was generated from the following files:

• src/galaxy/StarSystemGenerator.h
• src/galaxy/StarSystemGenerator.cpp