twitchapon-anim

commit 5d3a8550f6aa5a7a97a9b3a351d7839bd299ae49
parent c3873dc0ec49b3640716619b1939ee7d360c7ab4
Author: bsandro <brian.drosan@gmail.com>
Date:   Tue, 17 Nov 2020 22:36:07 +0300

alt image tiling method

Diffstat:
M
ebitest.go
 | 
14
+++++++++++++-

1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/ebitest.go b/ebitest.go
@@ -114,7 +114,7 @@ func (g *Game) Draw(screen *ebiten.Image) {
 	defer g.ShowDebug(screen)
 
 	// background
-	tileImage(screen, Images["grass.jpg"])
+	tileImageAlt(screen, Images["grass.jpg"])
 
 	for _, sprite := range g.sprites {
 		//w, h := sprite.img.Size()
@@ -212,6 +212,18 @@ func tileImage(screen *ebiten.Image, img *ebiten.Image) {
 	screen.DrawTriangles(vs, []uint16{0, 1, 2, 1, 2, 3}, img, op)
 }
 
+func tileImageAlt(screen *ebiten.Image, img *ebiten.Image) {
+	scrW, scrH := ScreenSize.width, ScreenSize.height
+	imgW, imgH := img.Size()
+	for x := 0; x < scrW; x += imgW {
+		for y := 0; y < scrH; y += imgH {
+			op := &ebiten.DrawImageOptions{}
+			op.GeoM.Translate(float64(x), float64(y))
+			screen.DrawImage(img, op)
+		}
+	}
+}
+
 func makeSprite(name string, x float64, y float64, angle float64) *Sprite {
 	return &Sprite{Images[name], ebiten.DrawImageOptions{}, x, y, angle, 0.0 /* rotation */}
 }