diff --git a/_docs/public/examples/paint.html b/_docs/public/examples/paint.html index ac5108c99..b92861a88 100644 --- a/_docs/public/examples/paint.html +++ b/_docs/public/examples/paint.html @@ -60,29 +60,48 @@ var ( canvasImage *ebiten.Image ) -func update(screen *ebiten.Image) error { - if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) { - count++ +func paint(screen *ebiten.Image, x, y int) error { + op := &ebiten.DrawImageOptions{} + op.GeoM.Translate(float64(x), float64(y)) + op.ColorM.Scale(1.0, 0.50, 0.125, 1.0) + theta := 2.0 * math.Pi * float64(count%60) / ebiten.FPS + op.ColorM.RotateHue(theta) + if err := canvasImage.DrawImage(brushImage, op); err != nil { + return err } + return nil +} +func update(screen *ebiten.Image) error { + drawn := false mx, my := ebiten.CursorPosition() - if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) { - op := &ebiten.DrawImageOptions{} - op.GeoM.Translate(float64(mx), float64(my)) - op.ColorM.Scale(1.0, 0.50, 0.125, 1.0) - theta := 2.0 * math.Pi * float64(count%60) / ebiten.FPS - op.ColorM.RotateHue(theta) - if err := canvasImage.DrawImage(brushImage, op); err != nil { + if err := paint(screen, mx, my); err != nil { return err } + drawn = true + } + for _, t := range ebiten.Touches() { + x, y := t.Position() + if err := paint(screen, x, y); err != nil { + return err + } + drawn = true + } + if drawn { + count++ } if err := screen.DrawImage(canvasImage, nil); err != nil { return err } - if err := ebitenutil.DebugPrint(screen, fmt.Sprintf("(%d, %d)", mx, my)); err != nil { + msg := fmt.Sprintf("(%d, %d)", mx, my) + for _, t := range ebiten.Touches() { + x, y := t.Position() + msg += fmt.Sprintf("\n(%d, %d) touch %d", x, y, t.ID()) + } + if err := ebitenutil.DebugPrint(screen, msg); err != nil { return err } return nil diff --git a/_docs/public/index.html b/_docs/public/index.html index f7fe618df..e95af5d8f 100644 --- a/_docs/public/index.html +++ b/_docs/public/index.html @@ -102,6 +102,33 @@ pre { <script src="yourgame.js"></script>
NOTE: file://
URL may not work with Ebiten. Execute your game on a HTTP server.
Let's build a simple "Hello world!" game to get started with Ebiten.
+First create a new directory (mkdir hello_world
), and change
+into it (cd hello_world
). Type the following code into
+the main.go
file:
package main
+
+import (
+ "github.com/hajimehoshi/ebiten"
+ "github.com/hajimehoshi/ebiten/ebitenutil"
+)
+
+func update(screen *ebiten.Image) error {
+ ebitenutil.DebugPrint(screen, "Hello world!")
+ return nil
+}
+
+func main() {
+ ebiten.Run(update, 320, 240, 2, "Hello world!")
+}
+
+
+Run the go run
command to start the
+game. There you have it, your first Ebiten game!