diff options
| -rw-r--r-- | pengui.go | 51 |
1 files changed, 39 insertions, 12 deletions
@@ -9,14 +9,28 @@ import ( "github.com/hajimehoshi/ebiten/v2/ebitenutil" ) -var img *ebiten.Image +const screen_w, screen_h = 640, 480 -var x float64 = 0 -var y float64 = 0 +type Penguin struct { + img *ebiten.Image + + x, y float64 + xv, yv float64 +} + +var penguin Penguin func init() { + penguin = Penguin{ + img: nil, + x: screen_w / 2, + y: screen_h / 2, + xv: 0, + yv: 0, + } + var err error - img, _, err = ebitenutil.NewImageFromFile("assets/penguin.png") + penguin.img, _, err = ebitenutil.NewImageFromFile("assets/penguin.png") if err != nil { log.Fatal(err) } @@ -24,20 +38,35 @@ func init() { type Game struct{} +func drawPenguin(screen *ebiten.Image, penguin Penguin) { + op := &ebiten.DrawImageOptions{} + op.GeoM.Translate(penguin.x, penguin.y) + screen.DrawImage(penguin.img, op) +} + +func updatePenguin(penguin *Penguin) { + penguin.x = penguin.x + penguin.xv + penguin.y = penguin.y + penguin.yv + + penguin.xv = penguin.xv / 2 + penguin.yv = penguin.yv / 2 +} + func (g *Game) Update() error { if ebiten.IsKeyPressed(ebiten.KeyArrowRight) { - x = x + 1 + penguin.xv = 4 } if ebiten.IsKeyPressed(ebiten.KeyArrowLeft) { - x = x - 1 + penguin.xv = -4 } if ebiten.IsKeyPressed(ebiten.KeyArrowUp) { - y = y - 1 + penguin.yv = -4 } if ebiten.IsKeyPressed(ebiten.KeyArrowDown) { - y = y + 1 + penguin.yv = 4 } - log.Printf("%f %f\n", x, y) + + updatePenguin(&penguin) return nil } @@ -45,9 +74,7 @@ func (g *Game) Update() error { func (g *Game) Draw(screen *ebiten.Image) { screen.Fill(color.RGBA{0xfe, 0xfe, 0xfe, 0xff}) - op := &ebiten.DrawImageOptions{} - op.GeoM.Translate(x, y) - screen.DrawImage(img, op) + drawPenguin(screen, penguin) } func (g *Game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) { |