// New constructs the menu
func New(am *assetmanager.AssetManager, id string, items []Item, spacing int32, justification int) *Menu {
// TODO: do these even need to be registered with any asset manager? just use util.RenderText?
menu := &Menu{items: items, spacing: spacing, justification: justification}
menuEntity := scenegraph.NewEntity(nil)
maxH := int32(0)
maxW := int32(0)
idNum := 0
for i, item := range menu.items {
var err error
var surface, surfaceHi *sdl.Surface
var entity, entityHi *scenegraph.Entity
if surface, err = am.RenderText(fmt.Sprintf("%s-%d", id, idNum), item.AssetFontID, item.Text, item.Color); err != nil {
panic(fmt.Sprintf("Menu render font: %v", err))
}
idNum++
if surfaceHi, err = am.RenderText(fmt.Sprintf("%s-%d", id, idNum), item.AssetFontID, item.Text, item.HiColor); err != nil {
panic(fmt.Sprintf("Intro render font: %v", err))
}
idNum++
entity = scenegraph.NewEntity(surface)
entity.Visible = i > 0
entityHi = scenegraph.NewEntity(surfaceHi)
entityHi.Visible = i == 0
menuEntity.AddChild(entity, entityHi)
if entity.W > maxW {
maxW = entity.W
}
entity.Y = maxH
entityHi.Y = maxH
maxH += menu.spacing
}
menuEntity.W = maxW
menuEntity.H = maxH
// position everything now that we have sizes known
for i := range menu.items {
entity := menuEntity.GetChild(i * 2)
entityHi := menuEntity.GetChild(i*2 + 1)
switch menu.justification {
case MenuJustifyLeft:
entity.X = 0
entityHi.X = 0
case MenuJustifyCenter:
scenegraph.CenterEntityInParent(entity, menuEntity)
scenegraph.CenterEntityInParent(entityHi, menuEntity)
case MenuJustifyRight:
scenegraph.RightJustifyEntityInParent(entity, menuEntity)
scenegraph.RightJustifyEntityInParent(entityHi, menuEntity)
}
}
menu.RootEntity = menuEntity
return menu
}
