Add input.Mouse

example/images/license.md

@@ -46,7 +46,7 @@ or without modification, either commercially and noncommercially.
 THESE FONTS ARE PROVIDED "AS IS" WITHOUT WARRANTY.
 ```
 
-## other files
+## Other files
 
 ```
 Copyright 2014 Hajime Hoshi

graphics/opengl/texture.go

@@ -57,11 +57,7 @@ func createNativeTexture(textureWidth, textureHeight int, pixels []uint8, filter
 	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, glFilter)
 	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, glFilter)
 
-	ptr := interface{}(nil)
-	if pixels != nil {
-		ptr = pixels
-	}
-	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, textureWidth, textureHeight, 0, gl.RGBA, gl.UNSIGNED_BYTE, ptr)
+	gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, textureWidth, textureHeight, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels)
 
 	return nativeTexture
 }

input/keyboard.go

@@ -2,6 +2,7 @@ package input
 
 type Key int
 
+// TODO: Add more keys.
 const (
 	KeyUp Key = iota
 	KeyDown
@@ -23,7 +24,7 @@ func SetKeyboard(keyboard Keyboard) {
 
 func IsKeyPressed(key Key) bool {
 	if currentKeyboard == nil {
-		panic("ui.IsKeyPressed: currentKeyboard is not set")
+		panic("input.IsKeyPressed: currentKeyboard is not set")
 	}
 	return currentKeyboard.IsKeyPressed(key)
 }

input/mouse.go

@@ -0,0 +1,35 @@
+package input
+
+type MouseButton int
+
+const (
+	MouseButtonLeft MouseButton = iota
+	MouseButtonRight
+	MouseButtonMiddle
+	MouseButtonMax
+)
+
+var currentMouse Mouse
+
+type Mouse interface {
+	CurrentPosition() (x, y int)
+	IsMouseButtonPressed(mouseButton MouseButton) bool
+}
+
+func SetMouse(mouse Mouse) {
+	currentMouse = mouse
+}
+
+func CurrentPosition() (x, y int) {
+	if currentMouse == nil {
+		panic("input.CurrentPosition: currentMouse is not set")
+	}
+	return currentMouse.CurrentPosition()
+}
+
+func IsMouseButtonPressed(button MouseButton) bool {
+	if currentMouse == nil {
+		panic("input.IsMouseButtonPressed: currentMouse is not set")
+	}
+	return currentMouse.IsMouseButtonPressed(button)
+}

ui/glfw/canvas.go

@@ -13,6 +13,7 @@ type canvas struct {
 	window         *glfw.Window
 	contextUpdater *opengl.ContextUpdater
 	keyboard       keyboard
+	mouse          mouse
 	funcs          chan func()
 	funcsDone      chan struct{}
 }
@@ -67,4 +68,5 @@ func (c *canvas) use(f func()) {
 
 func (c *canvas) update() {
 	c.keyboard.update(c.window)
+	c.mouse.update(c.window)
 }

ui/glfw/mouse.go

@@ -0,0 +1,30 @@
+package glfw
+
+import (
+	glfw "github.com/go-gl/glfw3"
+	"github.com/hajimehoshi/ebiten/input"
+	"math"
+)
+
+type mouse struct {
+	buttonPressed [input.MouseButtonMax]bool
+	x             int
+	y             int
+}
+
+func (m *mouse) CurrentPosition() (x, y int) {
+	return m.x, m.y
+}
+
+func (m *mouse) IsMouseButtonPressed(button input.MouseButton) bool {
+	return m.buttonPressed[button]
+}
+
+func (m *mouse) update(window *glfw.Window) {
+	x, y := window.GetCursorPosition()
+	m.x = int(math.Floor(x))
+	m.y = int(math.Floor(y))
+	for i := input.MouseButtonLeft; i < input.MouseButtonMax; i++ {
+		m.buttonPressed[i] = window.GetMouseButton(glfw.MouseButton(i)) == glfw.Press
+	}
+}

ui/glfw/ui.go

@@ -36,6 +36,7 @@ func (u *UI) Start(width, height, scale int, title string) (ui.Canvas, error) {
 		funcsDone: make(chan struct{}),
 	}
 	input.SetKeyboard(&c.keyboard)
+	input.SetMouse(&c.mouse)
 	graphics.SetTextureFactory(c)
 
 	c.run(width, height, scale)