Add ebiten.InputState

ebiten.go

@@ -16,7 +16,7 @@ type Game interface {
 	ScreenHeight() int
 	Fps() int
 	Init(tf graphics.TextureFactory)
-	Update()
+	Update(input InputState)
 	Draw(g graphics.GraphicsContext, offscreen graphics.Texture)
 }
 
@@ -24,7 +24,13 @@ type UI interface {
 	Run(device graphics.Device)
 }
 
-func OpenGLRun(game Game, ui UI, screenScale int) {
+type InputState struct {
+	IsTapped bool
+	X        int
+	Y        int
+}
+
+func OpenGLRun(game Game, ui UI, screenScale int, input chan InputState) {
 	ch := make(chan bool, 1)
 	graphicsDevice := opengl.NewDevice(
 		game.ScreenWidth(), game.ScreenHeight(), screenScale,
@@ -40,7 +46,8 @@ func OpenGLRun(game Game, ui UI, screenScale int) {
 		for {
 			<-tick
 			ticket := <-ch
-			game.Update()
+			inputState := <-input
+			game.Update(inputState)
 			ch <- ticket
 		}
 	}()

example/game/blank/blank.go

@@ -1,6 +1,7 @@
 package blank
 
 import (
+	"github.com/hajimehoshi/go.ebiten"
 	"github.com/hajimehoshi/go.ebiten/graphics"
 )
 
@@ -8,7 +9,7 @@ type Blank struct {
 }
 
 func New() *Blank {
-	return &Blank{} 
+	return &Blank{}
 }
 
 func (game *Blank) ScreenWidth() int {
@@ -26,10 +27,8 @@ func (game *Blank) Fps() int {
 func (game *Blank) Init(tf graphics.TextureFactory) {
 }
 
-func (game *Blank) Update() {
+func (game *Blank) Update(input ebiten.InputState) {
 }
 
 func (game *Blank) Draw(g graphics.GraphicsContext, offscreen graphics.Texture) {
 }
-
-

example/game/monochrome/monochrome.go

@@ -1,6 +1,7 @@
 package monochrome
 
 import (
+	"github.com/hajimehoshi/go.ebiten"
 	"github.com/hajimehoshi/go.ebiten/graphics"
 	"github.com/hajimehoshi/go.ebiten/graphics/matrix"
 	"image"
@@ -94,7 +95,7 @@ func (game *Monochrome) update() {
 	}
 }
 
-func (game *Monochrome) Update() {
+func (game *Monochrome) Update(input ebiten.InputState) {
 	game.ch <- true
 	<-game.ch
 }

example/game/rects/rects.go

@@ -1,6 +1,7 @@
 package rects
 
 import (
+	"github.com/hajimehoshi/go.ebiten"
 	"github.com/hajimehoshi/go.ebiten/graphics"
 	"github.com/hajimehoshi/go.ebiten/graphics/matrix"
 	"image/color"
@@ -32,7 +33,7 @@ func (game *Rects) Init(tf graphics.TextureFactory) {
 	game.rectsTexture = tf.NewTexture(game.ScreenWidth(), game.ScreenHeight())
 }
 
-func (game *Rects) Update() {
+func (game *Rects) Update(input ebiten.InputState) {
 }
 
 func (game *Rects) Draw(g graphics.GraphicsContext, offscreen graphics.Texture) {

example/game/rotating/rotating.go

@@ -1,6 +1,7 @@
 package rotating
 
 import (
+	"github.com/hajimehoshi/go.ebiten"
 	"github.com/hajimehoshi/go.ebiten/graphics"
 	"github.com/hajimehoshi/go.ebiten/graphics/matrix"
 	"image"
@@ -47,7 +48,7 @@ func (game *Rotating) Init(tf graphics.TextureFactory) {
 	}
 }
 
-func (game *Rotating) Update() {
+func (game *Rotating) Update(input ebiten.InputState) {
 	game.x++
 }
 

example/game/sprites/sprites.go

@@ -1,6 +1,7 @@
 package sprites
 
 import (
+	"github.com/hajimehoshi/go.ebiten"
 	"github.com/hajimehoshi/go.ebiten/graphics"
 	"github.com/hajimehoshi/go.ebiten/graphics/matrix"
 	"image"
@@ -104,7 +105,7 @@ func (game *Sprites) Init(tf graphics.TextureFactory) {
 	}
 }
 
-func (game *Sprites) Update() {
+func (game *Sprites) Update(input ebiten.InputState) {
 	for _, sprite := range game.sprites {
 		sprite.Update()
 	}

example/glut/main.go

@@ -29,8 +29,23 @@ import (
 	"unsafe"
 )
 
+type GlutInputEventState int
+
+const (
+	GlutInputEventStateUp GlutInputEventState = iota
+	GlutInputEventStateDown
+)
+
+type GlutInputEvent struct {
+	State GlutInputEventState
+	X     int
+	Y     int
+}
+
 type GlutUI struct {
-	device graphics.Device
+	screenScale      int
+	device           graphics.Device
+	glutInputEventCh chan GlutInputEvent
 }
 
 var currentUI *GlutUI
@@ -42,8 +57,21 @@ func display() {
 }
 
 //export mouse
-func mouse(button, state, x, y C.int) {
-
+func mouse(button, glutState, x, y C.int) {
+	var state GlutInputEventState
+	switch glutState {
+	case C.GLUT_UP:
+		state = GlutInputEventStateUp
+	case C.GLUT_DOWN:
+		state = GlutInputEventStateDown
+	default:
+		panic("invalid glutState")
+	}
+	currentUI.glutInputEventCh <- GlutInputEvent{
+		State: state,
+		X:     int(x),
+		Y:     int(y),
+	}
 }
 
 //export idle
@@ -52,6 +80,9 @@ func idle() {
 }
 
 func (ui *GlutUI) Init(screenWidth, screenHeight, screenScale int) {
+	ui.screenScale = screenScale
+	ui.glutInputEventCh = make(chan GlutInputEvent, 10)
+
 	cargs := []*C.char{}
 	for _, arg := range os.Args {
 		cargs = append(cargs, C.CString(arg))
@@ -109,5 +140,29 @@ func main() {
 	currentUI = &GlutUI{}
 	currentUI.Init(gm.ScreenWidth(), gm.ScreenHeight(), screenScale)
 
-	ebiten.OpenGLRun(gm, currentUI, screenScale)
+	input := make(chan ebiten.InputState)
+	go func() {
+		ch := currentUI.glutInputEventCh
+		var inputState ebiten.InputState
+		for {
+			select {
+			case event := <-ch:
+				switch event.State {
+				case GlutInputEventStateUp:
+					inputState.IsTapped = false
+					inputState.X = 0
+					inputState.Y = 0
+				case GlutInputEventStateDown:
+					inputState.IsTapped = true
+					inputState.X = event.X
+					inputState.Y = event.Y
+				}
+			default:
+				// do nothing
+			}
+			input <- inputState
+		}
+	}()
+
+	ebiten.OpenGLRun(gm, currentUI, screenScale, input)
 }