evolution

package
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 Go to latest Published: Jan 8, 2025 License: MIT Imports: 21 Imported by: 0

README

Arche Demo – Evolution

An evolutionary model of grazer behavior.

Grazers have genes for 4 traits:

  • MaxAngle is the maximum turning angle,
  • MinGrass is the grass threshold to stop grazing and start searching,
  • Investment is the energy invested in offspring,
  • Offspring is the number of offspring.

Colors of grazers are also inherited and mutated, but have no influence on fitness. Grazers can only mate with other grazers with a similar color.

See the live demo for this example.

Documentation

Overview

Package evolution provides an evolutionary model of grazer behavior.

Index

Constants

This section is empty.

Variables

View Source 
var GeneNames = [7]string{
	"MaxAngle",
	"MinGrass",
	"Invest",
	"Offspring",
	"Red",
	"Green",
	"Blue",
}

GeneNames for plotting.

Functions

func Run 

func Run()

Types

type Activity 

type Activity struct {
	IsGrazing bool
}

Activity component

type Age 

type Age struct {
	TickOfBirth int64
}

Age component

type Color 

type Color struct {
	Color color.RGBA
}

Color components

func (*Color) From 

func (c *Color) From(g *Genotype)

From sets the Colors to a Genotype.

type Energy 

type Energy struct {
	Energy float32
}

Energy component

type Genotype 

type Genotype struct {
	Genes [7]float32
}

Genotype components

func (*Genotype) Defaults 

func (g *Genotype) Defaults()

Defaults sets all genes to default values

func (*Genotype) Randomize 

func (g *Genotype) Randomize()

Randomize all genes

type Grass 

type Grass struct {
	Grass  common.Grid[float32]
	Growth common.Grid[float32]
	Scale  int
}

Grass resource.

func NewGrass 

func NewGrass(width, height, cellsize int, scale int) Grass

NewGrass creates a new Grass resource.

type GrasserCount 

type GrasserCount = common.Grid[int32]

GrasserCount resource.

type Heading 

type Heading struct {
	Angle float32
}

Heading component

func (*Heading) Direction 

func (h *Heading) Direction() (float32, float32)

Direction returns the unit vector corresponding to the heading.

type MouseSelection 

type MouseSelection struct {
	Selections []*SelectionEntry
}

MouseSelection resource.

type Phenotype 

type Phenotype struct {
	MaxAngle  float32
	MinGrass  float32
	Invest    float32
	Offspring uint8
}

Phenotype components

func (*Phenotype) From 

func (p *Phenotype) From(g *Genotype)

From sets the Phenotype to a Genotype.

type Position 

type Position struct {
	X float32
	Y float32
}

Position component

type SelectionEntry 

type SelectionEntry struct {
	XIndex   int
	YIndex   int
	Position Position
	Radius   float32
	Active   bool
}

SelectionEntry for MouseSelection.

type SysDecisions 

type SysDecisions struct {
	// contains filtered or unexported fields
}

SysDecisions is a system to perform grazer decisions.

func (*SysDecisions) Finalize 

func (s *SysDecisions) Finalize(world *ecs.World)

Finalize the system

func (*SysDecisions) Initialize 

func (s *SysDecisions) Initialize(world *ecs.World)

Initialize the system

func (*SysDecisions) Update 

func (s *SysDecisions) Update(world *ecs.World)

Update the system

type SysDisturbance 

type SysDisturbance struct {
	Interval    int
	Count       int
	MinRadius   int
	MaxRadius   int
	TargetValue float32
	// contains filtered or unexported fields
}

SysDisturbance is a system that applies disturbances.

func (*SysDisturbance) Finalize 

func (s *SysDisturbance) Finalize(world *ecs.World)

Finalize the system

func (*SysDisturbance) Initialize 

func (s *SysDisturbance) Initialize(world *ecs.World)

Initialize the system

func (*SysDisturbance) Update 

func (s *SysDisturbance) Update(world *ecs.World)

Update the system

type SysGrazing 

type SysGrazing struct {
	MaxUptake    float32
	UptakeFactor float32
	// contains filtered or unexported fields
}

SysGrazing is a system that handle grazing of entities on Grass.

func (*SysGrazing) Finalize 

func (s *SysGrazing) Finalize(world *ecs.World)

Finalize the system

func (*SysGrazing) Initialize 

func (s *SysGrazing) Initialize(world *ecs.World)

Initialize the system

func (*SysGrazing) Update 

func (s *SysGrazing) Update(world *ecs.World)

Update the system

type SysGrowGrassLinear 

type SysGrowGrassLinear struct {
	Interval int
	BaseRate float32
	// contains filtered or unexported fields
}

SysGrowGrassLinear is a system to grow the Grass resource.

func (*SysGrowGrassLinear) Finalize 

func (s *SysGrowGrassLinear) Finalize(world *ecs.World)

Finalize the system

func (*SysGrowGrassLinear) Initialize 

func (s *SysGrowGrassLinear) Initialize(world *ecs.World)

Initialize the system

func (*SysGrowGrassLinear) Update 

func (s *SysGrowGrassLinear) Update(world *ecs.World)

Update the system

type SysGrowGrassLogistic 

type SysGrowGrassLogistic struct {
	Interval int
	BaseRate float32
	// contains filtered or unexported fields
}

SysGrowGrassLogistic is a system to grow the Grass resource.

func (*SysGrowGrassLogistic) Finalize 

func (s *SysGrowGrassLogistic) Finalize(world *ecs.World)

Finalize the system

func (*SysGrowGrassLogistic) Initialize 

func (s *SysGrowGrassLogistic) Initialize(world *ecs.World)

Initialize the system

func (*SysGrowGrassLogistic) Update 

func (s *SysGrowGrassLogistic) Update(world *ecs.World)

Update the system

type SysInitEntities 

type SysInitEntities struct {
	InitialBatches  int
	ReleaseInterval int
	ReleaseBatches  int
	BatchSize       int
	RandomGenes     bool
	// contains filtered or unexported fields
}

SysInitEntities is a system to initialize entities.

func (*SysInitEntities) Finalize 

func (s *SysInitEntities) Finalize(world *ecs.World)

Finalize the system

func (*SysInitEntities) Initialize 

func (s *SysInitEntities) Initialize(world *ecs.World)

Initialize the system

func (*SysInitEntities) Update 

func (s *SysInitEntities) Update(world *ecs.World)

Update the system

type SysInitGrass 

type SysInitGrass struct {
	Frequency float32
	Octaves   int
	Falloff   float32
	Cutoff    float32
}

SysInitGrass is a system to initialize the Grass resource.

func (*SysInitGrass) Finalize 

func (s *SysInitGrass) Finalize(world *ecs.World)

Finalize the system

func (*SysInitGrass) Initialize 

func (s *SysInitGrass) Initialize(world *ecs.World)

Initialize the system

func (*SysInitGrass) Update 

func (s *SysInitGrass) Update(world *ecs.World)

Update the system

type SysMetabolism 

type SysMetabolism struct {
	RateGrazing   float32
	RateSearching float32
	// contains filtered or unexported fields
}

SysMetabolism is a system that reduces the energy of grazers due to metabolism.

func (*SysMetabolism) Finalize 

func (s *SysMetabolism) Finalize(world *ecs.World)

Finalize the system

func (*SysMetabolism) Initialize 

func (s *SysMetabolism) Initialize(world *ecs.World)

Initialize the system

func (*SysMetabolism) Update 

func (s *SysMetabolism) Update(world *ecs.World)

Update the system

type SysMortality 

type SysMortality struct {
	MaxAge int64
	// contains filtered or unexported fields
}

SysMortality is a system that removes entities with energy below zero.

func (*SysMortality) Finalize 

func (s *SysMortality) Finalize(world *ecs.World)

Finalize the system

func (*SysMortality) Initialize 

func (s *SysMortality) Initialize(world *ecs.World)

Initialize the system

func (*SysMortality) Update 

func (s *SysMortality) Update(world *ecs.World)

Update the system

type SysReproduction 

type SysReproduction struct {
	MatingTrials        int
	MaxMatingDist       int
	MaxMatingDiff       uint8
	CrossProb           float32
	MutationProbability float32
	MutationMagnitude   float32
	AllowAsexual        bool
	HatchRadius         float32
	// contains filtered or unexported fields
}

SysReproduction is a system that handles reproduction of grazers.

func (*SysReproduction) Finalize 

func (s *SysReproduction) Finalize(world *ecs.World)

Finalize the system

func (*SysReproduction) Initialize 

func (s *SysReproduction) Initialize(world *ecs.World)

Initialize the system

func (*SysReproduction) Update 

func (s *SysReproduction) Update(world *ecs.World)

Update the system

type SysSearching 

type SysSearching struct {
	MaxSpeed float32
	// contains filtered or unexported fields
}

SysSearching is a system to move around searching entities.

func (*SysSearching) Finalize 

func (s *SysSearching) Finalize(world *ecs.World)

Finalize the system

func (*SysSearching) Initialize 

func (s *SysSearching) Initialize(world *ecs.World)

Initialize the system

func (*SysSearching) Update 

func (s *SysSearching) Update(world *ecs.World)

Update the system

type UISysDrawEntities 

type UISysDrawEntities struct {
	// contains filtered or unexported fields
}

UISysDrawEntities is a system that draws entities as white pixels on an [Image] resource.

func (*UISysDrawEntities) FinalizeUI 

func (s *UISysDrawEntities) FinalizeUI(world *ecs.World)

FinalizeUI the system

func (*UISysDrawEntities) InitializeUI 

func (s *UISysDrawEntities) InitializeUI(world *ecs.World)

InitializeUI the system

func (*UISysDrawEntities) PostUpdateUI 

func (s *UISysDrawEntities) PostUpdateUI(world *ecs.World)

PostUpdateUI the system

func (*UISysDrawEntities) UpdateUI 

func (s *UISysDrawEntities) UpdateUI(world *ecs.World)

UpdateUI the system

type UISysDrawGrass 

type UISysDrawGrass struct {
	// contains filtered or unexported fields
}

UISysDrawGrass is a system that draws the Grass resource.

func (*UISysDrawGrass) FinalizeUI 

func (s *UISysDrawGrass) FinalizeUI(world *ecs.World)

FinalizeUI the system

func (*UISysDrawGrass) InitializeUI 

func (s *UISysDrawGrass) InitializeUI(world *ecs.World)

InitializeUI the system

func (*UISysDrawGrass) PostUpdateUI 

func (s *UISysDrawGrass) PostUpdateUI(world *ecs.World)

PostUpdateUI the system

func (*UISysDrawGrass) UpdateUI 

func (s *UISysDrawGrass) UpdateUI(world *ecs.World)

UpdateUI the system

type UISysDrawScatter 

type UISysDrawScatter struct {
	Interval       int
	IntervalOffset int
	XIndex         int
	YIndex         int
	ImageOffset    image.Point
	Width          int
	Height         int
	// contains filtered or unexported fields
}

UISysDrawScatter is a system that draws a scatter plot of entity [Genes].

func (*UISysDrawScatter) FinalizeUI 

func (s *UISysDrawScatter) FinalizeUI(world *ecs.World)

FinalizeUI the system

func (*UISysDrawScatter) InitializeUI 

func (s *UISysDrawScatter) InitializeUI(world *ecs.World)

InitializeUI the system

func (*UISysDrawScatter) PostUpdateUI 

func (s *UISysDrawScatter) PostUpdateUI(world *ecs.World)

PostUpdateUI the system

func (*UISysDrawScatter) UpdateUI 

func (s *UISysDrawScatter) UpdateUI(world *ecs.World)

UpdateUI the system

type UISysManagePause 

type UISysManagePause struct {
	// contains filtered or unexported fields
}

UISysManagePause is a simple system that transfers the pause state from the common.PauseMouseListener resource to the model's model.Systems.

func (*UISysManagePause) FinalizeUI 

func (s *UISysManagePause) FinalizeUI(world *ecs.World)

FinalizeUI the system

func (*UISysManagePause) InitializeUI 

func (s *UISysManagePause) InitializeUI(world *ecs.World)

InitializeUI the system

func (*UISysManagePause) PostUpdateUI 

func (s *UISysManagePause) PostUpdateUI(world *ecs.World)

PostUpdateUI the system

func (*UISysManagePause) UpdateUI 

func (s *UISysManagePause) UpdateUI(world *ecs.World)

UpdateUI the system

Source Files

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