74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
package konstructor
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import (
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"image/color"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/examples/resources/fonts"
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"github.com/hajimehoshi/ebiten/text"
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"golang.org/x/image/font"
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"golang.org/x/image/font/opentype"
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)
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type MenuMap map[string]Menu
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type MenuLayout struct {
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Background string
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DPI float64
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Size float64
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}
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type MenuItem struct {
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ID string
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Label string
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Handler func()
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}
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type Menu struct {
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CurrentSelected int
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MenuLayout MenuLayout
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MenuItems []MenuItem
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}
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func (e *Engine) MenuDraw(screen *ebiten.Image) {
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menu := e.MenuMap[e.KContext.Screen.Value]
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face := e.menuGetFontFace(menu)
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for i, menu_item := range menu.MenuItems {
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var c color.Color
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if menu.CurrentSelected == i {
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c = color.RGBA{R: 0, G: 255, B: 0, A: 100}
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} else {
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c = color.White
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}
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text.Draw(screen, menu_item.Label+"\n", face, 8, 24*(i+1), c)
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}
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}
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func (e *Engine) MenuUpdate() {
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menu := e.MenuMap[e.KContext.Screen.Value]
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if e.Controller.DownPressed() && menu.CurrentSelected != len(menu.MenuItems)-1 {
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menu.CurrentSelected++
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}
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if e.Controller.UpPressed() && menu.CurrentSelected != 0 {
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menu.CurrentSelected--
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}
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if e.Controller.Action0Pressed() {
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menu.MenuItems[menu.CurrentSelected].Handler()
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}
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e.MenuMap[e.KContext.Screen.Value] = menu
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}
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func (e *Engine) menuGetFontFace(menu Menu) font.Face {
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tt, _ := opentype.Parse(fonts.MPlus1pRegular_ttf)
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face, _ := opentype.NewFace(tt, &opentype.FaceOptions{
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Size: menu.MenuLayout.DPI,
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DPI: menu.MenuLayout.Size,
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Hinting: font.HintingVertical,
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})
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return face
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}
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