Make the menu buttons work

internal/menus/menus.go

@@ -10,15 +10,24 @@ import (
 	"code.ur.gs/lupine/ordoor/internal/util/asciiscan"
 )
 
+const (
+	TypeStatic     = 0
+	TypeMenu       = 1
+	TypeOverlay    = 61
+	TypeMainButton = 228
+)
+
 type Record struct {
 	Parent   *Record
 	Children []*Record
 
 	Id       int
 	Type     int
+	DrawType int
 	FontType int
 	Active   bool
 	SpriteId []int
+	Share    int
 	X        int
 	Y        int
 	Desc     string
@@ -161,6 +170,29 @@ func (r *Record) Toplevel() *Record {
 	return r
 }
 
+func (r *Record) SelectSprite(step int, pressed, focused bool) int {
+	switch r.Type {
+	case TypeStatic:
+		return r.SpriteId[0]
+	case TypeMenu:
+		return r.SpriteId[0] // Probably -1
+	case TypeOverlay:
+		return r.Share
+	case TypeMainButton:
+		// A main button has 4 states: unfocused, focused (animated), mousedown, disabled
+		if focused && pressed {
+			return r.Share + 1
+		} else if focused {
+			return r.SpriteId[0] + (step % r.DrawType)
+		}
+
+		// TODO: disabled
+		return r.Share
+	}
+
+	return -1
+}
+
 func setProperty(r *Record, k, v string) {
 	vSplit := strings.Split(v, ",")
 	vInt, _ := strconv.Atoi(v)
@@ -187,6 +219,10 @@ func setProperty(r *Record, k, v string) {
 		r.Desc = v
 	case "FONTTYPE":
 		r.FontType = vInt
+	case "DRAW TYPE":
+		r.DrawType = vInt
+	case "SHARE":
+		r.Share = vInt
 	default:
 		r.properties[k] = v
 	}