package Sarah

import "github.com/faiface/pixel"

func CreateAnimation() *Animation {
	a := new(Animation)

	a.Index = 0.0
	a.Time = 0.0

	return a
}
type Animation struct {
	Sprites []*Sprite
	Index float64//图组索引
	Time float64//运行的时长

	pos pixel.Vec//位置
}
func (this *Animation) SetPos(x float64,y float64){
	this.pos.X=x
	this.pos.Y=y
	for _,v := range this.Sprites{
		v.pos = pixel.Vec{this.pos.X,this.pos.Y}
	}
}
func (this *Animation) GetPos()(float64,float64){
	return this.pos.X,this.pos.Y
}
func (this *Animation) AddPic(path string){
	pic,err := LoadPicture_l(path)
	CheckError(err)
	s := CreatSprite(path)
	s.Sprite = pixel.NewSprite(pic,pic.Bounds())
	s.pos = this.pos
	this.Sprites = append(this.Sprites,s)
}
func (this *Animation) set_index(){
	if int(this.Index) == len(this.Sprites)-1 {
		this.Index = 0.0
	}else {
		this.Index+=0.2
	}
}
func (this *Animation) Play(scene *SceneManager){
	this.set_index()
	this.Sprites[int(this.Index)].Draw(scene,1)
}