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OpenDiablo2/d2core/d2gui/sprite.go
gravestench 6e31cfb52a
migrate to ebiten v2.0 API (#860)
* migrate to ebiten v2.0 API

* fixed lint errors
2020-10-28 14:17:42 -04:00

110 lines
2.4 KiB
Go

package d2gui
import (
"log"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
"github.com/OpenDiablo2/OpenDiablo2/d2core/d2asset"
)
// AnimationDirection is a the animation play direction
type AnimationDirection int
// AnimationDirection types
const (
DirectionForward AnimationDirection = iota
DirectionBackward
)
// static check that Sprite implements widget
var _ widget = &Sprite{}
// Sprite is an image
type Sprite struct {
widgetBase
segmentsX int
segmentsY int
frameOffset int
animation d2interface.Animation
}
// AnimatedSprite is a sprite that has animation
type AnimatedSprite struct {
*Sprite
}
func createSprite(imagePath, palettePath string, assetManager *d2asset.AssetManager) (*Sprite, error) {
animation, err := assetManager.LoadAnimation(imagePath, palettePath)
if err != nil {
return nil, err
}
sprite := &Sprite{}
sprite.animation = animation
sprite.SetVisible(true)
return sprite, nil
}
func createAnimatedSprite(
imagePath, palettePath string,
direction AnimationDirection,
assetManager *d2asset.AssetManager,
) (*AnimatedSprite, error) {
animation, err := assetManager.LoadAnimation(imagePath, palettePath)
if err != nil {
return nil, err
}
sprite := &AnimatedSprite{Sprite: &Sprite{animation: animation}}
if direction == DirectionForward {
sprite.animation.PlayForward()
} else {
sprite.animation.PlayBackward()
}
sprite.SetVisible(true)
return sprite, nil
}
func (s *AnimatedSprite) render(target d2interface.Surface) {
_, frameHeight := s.animation.GetCurrentFrameSize()
target.PushTranslation(s.x, s.y-frameHeight)
defer target.Pop()
s.animation.Render(target)
}
// SetSegmented sets the segment properties of the sprite
func (s *Sprite) SetSegmented(segmentsX, segmentsY, frameOffset int) {
s.segmentsX = segmentsX
s.segmentsY = segmentsY
s.frameOffset = frameOffset
}
func (s *Sprite) render(target d2interface.Surface) {
err := renderSegmented(s.animation, s.segmentsX, s.segmentsY, s.frameOffset, target)
if err != nil {
log.Println(err)
}
}
func (s *Sprite) advance(elapsed float64) error {
return s.animation.Advance(elapsed)
}
func (s *Sprite) getSize() (width, height int) {
return s.animation.GetCurrentFrameSize()
}
// SetEffect sets the draw effect for the sprite
func (s *Sprite) SetEffect(e d2enum.DrawEffect) {
s.animation.SetEffect(e)
}