func addSprites(u *packetUpdateObject, obj world.Visible) *packetUpdateObject {
sheet := obj.Sprite()
x, y := obj.SpritePos()
width, height := obj.SpriteSize()
scale := obj.Scale()
animation := obj.AnimationType()
for i, c := range obj.Colors() {
if c == "" {
continue
}
u.Sprites = append(u.Sprites, packetUpdateSprite{
Sheet: sheet,
Color: c,
Extra: map[string]interface{}{
"w": width,
"h": height,
"x": x,
"y": y + uint(i),
"s": scale,
"a": animation,
},
})
}
for _, a := range obj.Attached() {
addSprites(u, a)
}
return u
}
