draws

Documentation

Index

• Constants
• Variables
• func NewImage(path string) *ebiten.Image
• func NewImageImage(path string) image.Image
• func NewImages(path string) (is []*ebiten.Image)
• func NewScaledImage(i *ebiten.Image, scale float64) *ebiten.Image
• func NewXFlippedImage(i *ebiten.Image) *ebiten.Image
• func NewYFlippedImage(i *ebiten.Image) *ebiten.Image
• type Align
• type Animation
  • func NewAnimation(path string) Animation
  • func NewAnimationFromImages(images []*ebiten.Image) (a Animation)
• type Box
  • func NewBox() Box
  • func (b *Box) ApplyScale(scale float64)
  • func (b Box) In(size, p Point) bool
  • func (b Box) Max(size Point) Point
  • func (b Box) Min(size Point) (min Point)
  • func (b *Box) Move(x, y float64)
  • func (b *Box) SetPoint(x, y float64, origin Origin)
  • func (b *Box) SetScale(scale Point)
  • func (b Box) XY(size Point) (float64, float64)
• type Button
  • func NewButton(s Subject, onClick func(), mode ButtonMode) Button
  • func (b *Button) Hover() bool
  • func (b *Button) Update()
• type ButtonMode
• type Label
  • func NewLabel(text string, face font.Face) *Label
  • func (l Label) Draw(screen *ebiten.Image, op ebiten.DrawImageOptions)
  • func (l *Label) SetSize(size Point)
  • func (l Label) Size() Point
  • func (l Label) SrcSize() Point
• type Origin
• type Point
  • func IntPt(x, y int) Point
  • func Pt(x, y float64) Point
  • func Scalar(v float64) Point
  • func (p Point) Add(q Point) Point
  • func (p Point) Div(q Point) Point
  • func (p Point) Mul(q Point) Point
  • func (p Point) Sub(q Point) Point
  • func (p Point) XY() (float64, float64)
  • func (p Point) XYInt() (int, int)
• type Sprite
  • func NewSprite(path string) Sprite
  • func NewSpriteFromImage(i *ebiten.Image) Sprite
  • func (s Sprite) Draw(screen *ebiten.Image, op ebiten.DrawImageOptions)
  • func (s Sprite) H() float64
  • func (s Sprite) In(p Point) bool
  • func (s Sprite) IsValid() bool
  • func (s *Sprite) SetScaleToH(h float64)
  • func (s *Sprite) SetScaleToW(w float64)
  • func (s *Sprite) SetSize(w, h float64)
  • func (s Sprite) Size() Point
  • func (s Sprite) SrcSize() Point
  • func (s Sprite) W() float64
  • func (s Sprite) XY() (float64, float64)
• type Subject
• type Timer
  • func NewTimer(maxTick, period int) Timer
  • func (t Timer) Age() float64
  • func (t Timer) Done() bool
  • func (t Timer) Frame(animation Animation) Sprite
  • func (t Timer) Progress(start, end float64) float64
  • func (t *Timer) Reset()
  • func (t *Timer) Ticker()

Constants

const (
	ButtonModePressed = iota
	ButtonModeClicked // onClick goes called when mouse button is pressed and released.
)

const (
	Left = iota
	Center
	Right
)

const (
	Top = iota
	Middle
	Bottom
)

Variables

var (
	LeftTop      = struct{ X, Y int }{Left, Top}
	LeftMiddle   = struct{ X, Y int }{Left, Middle}
	LeftBottom   = struct{ X, Y int }{Left, Bottom}
	CenterTop    = struct{ X, Y int }{Center, Top}
	CenterMiddle = struct{ X, Y int }{Center, Middle}
	CenterBottom = struct{ X, Y int }{Center, Bottom}
	RightTop     = struct{ X, Y int }{Right, Top}
	RightMiddle  = struct{ X, Y int }{Right, Middle}
	RightBottom  = struct{ X, Y int }{Right, Bottom}
)

https://go.dev/play/p/6FsxRuznEtE

Functions

func NewImage

func NewImage(path string) *ebiten.Image

NewImage returns nil when fails to load image from the path.

func NewImageImage

func NewImageImage(path string) image.Image

NewImageImage returns image.Image.

func NewImages

func NewImages(path string) (is []*ebiten.Image)

func NewScaledImage

func NewScaledImage(i *ebiten.Image, scale float64) *ebiten.Image

func NewXFlippedImage

func NewXFlippedImage(i *ebiten.Image) *ebiten.Image

func NewYFlippedImage

func NewYFlippedImage(i *ebiten.Image) *ebiten.Image

Types

type Align

type Align struct{ X, Y int }

type Animation

type Animation []Sprite

func NewAnimation

func NewAnimation(path string) Animation

func NewAnimationFromImages

func NewAnimationFromImages(images []*ebiten.Image) (a Animation)

type Box

type Box struct {
	Scale Point
	Point
	Origin Origin
	Filter ebiten.Filter
}

func NewBox

func NewBox() Box

func (*Box) ApplyScale

func (b *Box) ApplyScale(scale float64)

func (Box) In

func (b Box) In(size, p Point) bool

func (Box) Max

func (b Box) Max(size Point) Point

func (Box) Min

func (b Box) Min(size Point) (min Point)

func (*Box) Move

func (b *Box) Move(x, y float64)

func (*Box) SetPoint

func (b *Box) SetPoint(x, y float64, origin Origin)

func (*Box) SetScale

func (b *Box) SetScale(scale Point)

func (Box) XY

func (b Box) XY(size Point) (float64, float64)

type Button

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

func NewButton

func NewButton(s Subject, onClick func(), mode ButtonMode) Button

func (*Button) Hover

func (b *Button) Hover() bool

func (*Button) Update

func (b *Button) Update()

type ButtonMode

type ButtonMode int

type Label

type Label struct {
	Text  string
	Face  font.Face
	Color color.Color
	Box
}

Label may have expecting w and h by selecting specific Face.

func NewLabel

func NewLabel(text string, face font.Face) *Label

func (Label) Draw

func (l Label) Draw(screen *ebiten.Image, op ebiten.DrawImageOptions)

func (*Label) SetSize

func (l *Label) SetSize(size Point)

func (Label) Size

func (l Label) Size() Point

func (Label) SrcSize

func (l Label) SrcSize() Point

type Origin

type Origin struct{ X, Y int }

type Point

type Point struct{ X, Y float64 }

func IntPt

func IntPt(x, y int) Point

Input integers.

func Pt

func Pt(x, y float64) Point

func Scalar

func Scalar(v float64) Point

func (Point) Add

func (p Point) Add(q Point) Point

func (Point) Div

func (p Point) Div(q Point) Point

func (Point) Mul

func (p Point) Mul(q Point) Point

func (Point) Sub

func (p Point) Sub(q Point) Point

func (Point) XY

func (p Point) XY() (float64, float64)

func (Point) XYInt

func (p Point) XYInt() (int, int)

Output integers.

type Sprite

type Sprite struct {
	Box
	// contains filtered or unexported fields
}

Sprite is an image drawn in a screen based on its position and scale. DrawImageOptions is not commutative. Do Translate at the final stage.

func NewSprite

func NewSprite(path string) Sprite

func NewSpriteFromImage

func NewSpriteFromImage(i *ebiten.Image) Sprite

func (Sprite) Draw

func (s Sprite) Draw(screen *ebiten.Image, op ebiten.DrawImageOptions)

func (Sprite) H

func (s Sprite) H() float64

func (Sprite) In

func (s Sprite) In(p Point) bool

func (Sprite) IsValid

func (s Sprite) IsValid() bool

func (*Sprite) SetScaleToH

func (s *Sprite) SetScaleToH(h float64)

func (*Sprite) SetScaleToW

func (s *Sprite) SetScaleToW(w float64)

func (*Sprite) SetSize

func (s *Sprite) SetSize(w, h float64)

func (Sprite) Size

func (s Sprite) Size() Point

func (Sprite) SrcSize

func (s Sprite) SrcSize() Point

func (Sprite) W

func (s Sprite) W() float64

func (Sprite) XY

func (s Sprite) XY() (float64, float64)

type Subject

type Subject interface {
	Size() Point
	// SetSize(w, h float64)
	Draw(*ebiten.Image, ebiten.DrawImageOptions)
	In(p Point) bool
}

type Timer

type Timer struct {
	Tick    int
	MaxTick int
	Period  int
}

MaxTick, Period == {+, +}: finite drawing with animation. e.g., Judgment. MaxTick, Period == {+, 0}: finite drawing with no animation. e.g., Combo. MaxTick, Period == {0, +}: infinite drawing with animation. e.g., Dancer. MaxTick, Period == {0, 0}: infinite drawing with no animation. e.g., Stage.

func NewTimer

func NewTimer(maxTick, period int) Timer

func (Timer) Age

func (t Timer) Age() float64

For visual effects.

func (Timer) Done

func (t Timer) Done() bool

func (Timer) Frame

func (t Timer) Frame(animation Animation) Sprite

For Animation.

func (Timer) Progress

func (t Timer) Progress(start, end float64) float64

func (*Timer) Reset

func (t *Timer) Reset()

func (*Timer) Ticker

func (t *Timer) Ticker()