boid

Documentation

Index

• func Teleport(pos, edge float64) float64
• type Arrow
  • func (a *Arrow) Apply(newPos, newVel *v.Vector2D)
  • func (a *Arrow) Coords() v.Vector2D
  • func (a *Arrow) Draw(screen *ebiten.Image)
  • func (a *Arrow) Update(sx, sy float64, population []Boid, index int, info chan *Data)
  • func (a *Arrow) Velocity() v.Vector2D
• type Boid
• type Data
• type Square
  • func (s *Square) Coords() v.Vector2D
  • func (s *Square) Draw(screen *ebiten.Image)
  • func (s *Square) Update(sx, sy float64, population []Boid)
  • func (s *Square) Velocity() v.Vector2D
• type Triangle
  • func (t *Triangle) Add(vector v.Vector2D, points ...*v.Vector2D)
  • func (t *Triangle) Apply(*v.Vector2D, *v.Vector2D)
  • func (t *Triangle) Coords() v.Vector2D
  • func (t *Triangle) Draw(screen *ebiten.Image)
  • func (t *Triangle) TrianglePointsMake(x, y float64)
  • func (t *Triangle) Update(sx, sy float64, population []Boid, index int, info chan *Data)
  • func (t *Triangle) Velocity() v.Vector2D

Functions

func Teleport

func Teleport(pos, edge float64) float64

Teleport places point on opposite end of the screen when offscreen.

Types

type Arrow

type Arrow struct {
	ImageWidth  int
	ImageHeight int
	SightDis    float64
	SightAngle  float64
	Pos         *v.Vector2D
	Vel         *v.Vector2D
	Accel       *v.Vector2D
	Image       *ebiten.Image
}

func (*Arrow) Apply

func (a *Arrow) Apply(newPos, newVel *v.Vector2D)

func (*Arrow) Coords

func (a *Arrow) Coords() v.Vector2D

func (*Arrow) Draw

func (a *Arrow) Draw(screen *ebiten.Image)

func (*Arrow) Update

func (a *Arrow) Update(sx, sy float64, population []Boid, index int, info chan *Data)

func (*Arrow) Velocity

func (a *Arrow) Velocity() v.Vector2D

type Boid

type Boid interface {
	Update(float64, float64, []Boid, int, chan *Data)
	Draw(*ebiten.Image)
	Coords() v.Vector2D
	Velocity() v.Vector2D
	Apply(*v.Vector2D, *v.Vector2D)
}

type Data

type Data struct {
	Index  int
	NewPos *v.Vector2D
	NewVel *v.Vector2D
}

type Square

type Square struct {
	ImageWidth  int
	ImageHeight int
	SightDis    int
	Pos         *v.Vector2D
	Vel         *v.Vector2D
	Accel       *v.Vector2D
}

func (*Square) Coords

func (s *Square) Coords() v.Vector2D

func (*Square) Draw

func (s *Square) Draw(screen *ebiten.Image)

func (*Square) Update

func (s *Square) Update(sx, sy float64, population []Boid)

func (*Square) Velocity

func (s *Square) Velocity() v.Vector2D

type Triangle

type Triangle struct {
	ImageWidth  int
	ImageHeight int
	SightAngle  float64
	SightDis    int         // Distance that boid can see in front of it
	Theta       float64     // Angle that the Velocity vectors create.
	VelTheta    float64     // Angle that the Acceleration vectors create.
	Top         *v.Vector2D // Vertex of the initial top point
	Left        *v.Vector2D // Vertex of the initial left point
	Right       *v.Vector2D // Vertex of the initial right point
	Vel         *v.Vector2D
	Accel       *v.Vector2D
}

Triangle is an image object for the game screen. It satisfies the boid interface.

func (*Triangle) Add

func (t *Triangle) Add(vector v.Vector2D, points ...*v.Vector2D)

func (*Triangle) Apply

func (t *Triangle) Apply(*v.Vector2D, *v.Vector2D)

func (*Triangle) Coords

func (t *Triangle) Coords() v.Vector2D

func (*Triangle) Draw

func (t *Triangle) Draw(screen *ebiten.Image)

func (*Triangle) TrianglePointsMake

func (t *Triangle) TrianglePointsMake(x, y float64)

TrianglePointsMake uses (x, y) as coordinates of the top. Finds the Right and Left Point using ImageWidth, ImageHeight, and (x, y).

func (*Triangle) Update

func (t *Triangle) Update(sx, sy float64, population []Boid, index int, info chan *Data)

Update gives new values to the vertices and velocity vectors.

func (*Triangle) Velocity

func (t *Triangle) Velocity() v.Vector2D