package rects import ( "github.com/hajimehoshi/go.ebiten/graphics" "github.com/hajimehoshi/go.ebiten/graphics/matrix" "image/color" "math/rand" "time" ) type Rects struct { rectsTexture graphics.Texture } func New() *Rects { return &Rects{} } func (game *Rects) ScreenWidth() int { return 256 } func (game *Rects) ScreenHeight() int { return 240 } func (game *Rects) Fps() int { return 60 } func (game *Rects) Init(tf graphics.TextureFactory) { game.rectsTexture = tf.NewTexture(game.ScreenWidth(), game.ScreenHeight()) } func (game *Rects) Update() { } func (game *Rects) Draw(g graphics.GraphicsContext, offscreen graphics.Texture) { g.SetOffscreen(game.rectsTexture.ID) x := rand.Intn(game.ScreenWidth()) y := rand.Intn(game.ScreenHeight()) width := rand.Intn(game.ScreenWidth() - x) height := rand.Intn(game.ScreenHeight() - y) red := uint8(rand.Intn(256)) green := uint8(rand.Intn(256)) blue := uint8(rand.Intn(256)) alpha := uint8(rand.Intn(256)) g.DrawRect( graphics.Rect{x, y, width, height}, &color.RGBA{red, green, blue, alpha}, ) g.SetOffscreen(offscreen.ID) g.DrawTexture(game.rectsTexture.ID, matrix.IdentityGeometry(), matrix.IdentityColor()) } func init() { rand.Seed(time.Now().UnixNano()) }