move to codeberg (#10)

cmd/game.go

@@ -0,0 +1,82 @@
+package cmd
+
+import (
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type Game struct {
+	ScreenWidth, ScreenHeight, ReadlWidth, Cellsize int
+	Scenes                                          map[SceneName]Scene
+	CurrentScene                                    SceneName
+	Config                                          *Config
+	Scale                                           float32
+}
+
+func NewGame(config *Config, startscene SceneName) *Game {
+	game := &Game{
+		Config:       config,
+		Scenes:       map[SceneName]Scene{},
+		ScreenWidth:  config.ScreenWidth,
+		ScreenHeight: config.ScreenHeight,
+	}
+
+	// setup scene[s]
+	game.CurrentScene = startscene
+	game.Scenes[Play] = NewPlayScene(game, config)
+	game.Scenes[Menu] = NewMenuScene(game, config)
+	game.Scenes[Options] = NewOptionsScene(game, config)
+	game.Scenes[Keybindings] = NewKeybindingsScene(game, config)
+
+	// setup environment
+	ebiten.SetWindowSize(game.ScreenWidth, game.ScreenHeight)
+	ebiten.SetWindowTitle("golsky - conway's game of life")
+	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
+	ebiten.SetScreenClearedEveryFrame(true)
+
+	return game
+}
+
+func (game *Game) GetCurrentScene() Scene {
+	return game.Scenes[game.CurrentScene]
+}
+
+func (game *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
+	game.ReadlWidth = outsideWidth
+	game.Scale = float32(game.ScreenWidth) / float32(outsideWidth)
+	return game.ScreenWidth, game.ScreenHeight
+}
+
+func (game *Game) Update() error {
+	scene := game.GetCurrentScene()
+
+	if quit := scene.Update(); quit != nil {
+		return quit
+	}
+
+	next := scene.GetNext()
+	if next != game.CurrentScene {
+		game.Scenes[next].SetPrevious(game.CurrentScene)
+		scene.ResetNext()
+		game.CurrentScene = next
+	}
+
+	return nil
+}
+
+func (game *Game) Draw(screen *ebiten.Image) {
+	// first draw primary scene[s], although there are only 1
+	for current, scene := range game.Scenes {
+		if scene.IsPrimary() {
+			// primary scenes always draw
+			scene.Draw(screen)
+
+			if current == game.CurrentScene {
+				// avoid to redraw it in the next step
+				return
+			}
+		}
+	}
+
+	scene := game.GetCurrentScene()
+	scene.Draw(screen)
+}