103 lines
2.4 KiB
Go
103 lines
2.4 KiB
Go
package screens
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import (
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"image/color"
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"math"
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"mover/assets"
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"mover/fonts"
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"mover/gamedata"
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"mover/touch"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/audio"
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"github.com/hajimehoshi/ebiten/v2/inpututil"
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"github.com/hajimehoshi/ebiten/v2/text"
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)
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type StartScreen struct {
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eHandler map[ScreenManagerEvent]func()
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dimensions gamedata.Area
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target gamedata.Coordinates
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current gamedata.Coordinates
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targetreached bool
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audioplayed bool
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cycle int
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audioplayer *audio.Player
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}
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func NewStartScreen() *StartScreen {
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s := &StartScreen{
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eHandler: make(map[ScreenManagerEvent]func()),
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target: gamedata.Coordinates{X: 640/2 - 150, Y: 480 / 2},
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current: gamedata.Coordinates{X: 640/2 - 150, Y: -100},
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targetreached: false,
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cycle: 0,
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audioplayed: false,
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}
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return s
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}
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func (s *StartScreen) Update() error {
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touch.UpdateTouchIDs()
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ids := touch.GetTouchIDs()
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var touched bool = false
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for _, id := range ids {
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touched = touch.IsTouchJustPressed(id)
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if touched {
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break
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}
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyEnter) ||
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ebiten.IsStandardGamepadButtonPressed(0, ebiten.StandardGamepadButtonCenterRight) ||
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touched {
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s.eHandler[EventCompleted]()
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if s.audioplayer.IsPlaying() {
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s.audioplayer.Close()
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}
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}
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if !s.audioplayed {
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s.audioplayer = audioContext.NewPlayerFromBytes(assets.Survive)
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s.audioplayer.Play()
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s.audioplayed = true
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}
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if !s.targetreached {
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s.current.X += (s.target.X - s.current.X) / 8
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s.current.Y += (s.target.Y - s.current.Y) / 8
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} else {
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s.current.Y += 0.5 * math.Sin(float64(s.cycle)/(math.Pi*8))
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}
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if math.Abs(s.current.Y-s.target.Y) < 1 && !s.targetreached {
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s.targetreached = true
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}
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s.cycle++
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return nil
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}
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func (s *StartScreen) Draw(screen *ebiten.Image) {
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screen.Clear()
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screen.DrawImage(assets.ImageBank[assets.Title], nil)
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text.Draw(screen, "survive", fonts.SurviveFont.ArcadeLarge, int(s.current.X), int(s.current.Y), color.Black)
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if s.targetreached && (s.cycle/16)%4 < 2 {
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text.Draw(screen, "press start", fonts.SurviveFont.Arcade, 640/2-25, 300, color.Black)
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}
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text.Draw(screen, "©bsoft games", fonts.SurviveFont.ArcadeSmall, 640/2+25, 180, color.Black)
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}
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func (s *StartScreen) SetEventHandler(e ScreenManagerEvent, f func()) {
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s.eHandler[e] = f
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}
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func (s *StartScreen) SetDimensions(a gamedata.Area) {
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s.dimensions = a
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}
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