game

type Capsule ¶

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

Capsule represents a line that can collide with circles

func NewCapsule(start, end Vec2, r float64, shader *ebiten.Shader) *Capsule

func (c *Capsule) Draw(screen *ebiten.Image)

type Circle ¶

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

Circle represents a circle

func NewCircle(x, y, r float64, shader *ebiten.Shader) *Circle

func (c Circle) Draw(screen *ebiten.Image)

type Engine ¶

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

Engine handles collisions

func NewEngine(width, height int, circles []*Circle, capsules []*Capsule, rectangles []*collisionRect) *Engine

type Game ¶

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

Game implements ebiten.Game interface and stores the game state.

The methods run in the following order (each one is run once in this order if fps is 60 and display is 60 Hz):

Update
Draw
Layout

func NewGame(width, height int) *Game

func (g *Game) Draw(screen *ebiten.Image)

func (g *Game) Draw2(screen *ebiten.Image)

func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int)

func (g *Game) Update() error

type SpeedControl ¶

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

SpeedControl handles time dilation and pausing.

func NewSpeedControl() *SpeedControl

type Vec2 ¶

type Vec2 struct {
	X float64
	Y float64
}

Vec2 is a 2D vector

func (u Vec2) Add(v Vec2) Vec2

func (u Vec2) Angle() float64

func (u Vec2) Cross(v Vec2) float64

func (u Vec2) Dot(v Vec2) float64

func (u Vec2) Len() float64

func (u Vec2) Normal() Vec2

func (u Vec2) Scaled(s float64) Vec2

func (u Vec2) Sub(v Vec2) Vec2

func (u Vec2) To(v Vec2) Vec2

func (u Vec2) Unit() Vec2