Add ui_js.go and input_js.go

internal/opengl/context_js.go

@@ -43,6 +43,7 @@ func NewContext(gl *webgl.Context) *Context {
 		DynamicDraw:        BufferUsageType(gl.DYNAMIC_DRAW),
 		StaticDraw:         BufferUsageType(gl.STATIC_DRAW),
 	}
+	c.gl = gl
 	c.init()
 	return c
 }

internal/ui/input.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !js
+
 package ui
 
 import (

internal/ui/input_js.go

@@ -0,0 +1,32 @@
+// Copyright 2015 Hajime Hoshi
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build js
+
+package ui
+
+func IsKeyPressed(key Key) bool {
+	// TODO: Implement this.
+	return false
+}
+
+func IsMouseButtonPressed(button MouseButton) bool {
+	// TODO: Implement this.
+	return false
+}
+
+func CursorPosition() (x, y int) {
+	// TODO: Implement this.
+	return 0, 0
+}

internal/ui/ui.go

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// +build !js
+
 package ui
 
 import (

internal/ui/ui_js.go

@@ -0,0 +1,64 @@
+// Copyright 2015 Hajime Hoshi
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build js
+
+package ui
+
+import (
+	"github.com/gopherjs/gopherjs/js"
+	"github.com/gopherjs/webgl"
+	"github.com/hajimehoshi/ebiten/internal/opengl"
+	"time"
+)
+
+var canvas js.Object
+var context *opengl.Context
+
+func Use(f func(*opengl.Context)) {
+	f(context)
+}
+
+func DoEvents() {
+	time.Sleep(1)
+}
+
+func Terminate() {
+	// Do nothing.
+}
+
+func IsClosed() bool {
+	return false
+}
+
+func SwapBuffers() {
+	// Do nothing.
+}
+
+func init() {
+	canvas = js.Global.Get("Canvas").New()
+	js.Global.Get("document").Get("body").Call("appendChild", canvas)
+	webglContext, err := webgl.NewContext(canvas, &webgl.ContextAttributes{
+		Alpha:              true,
+		PremultipliedAlpha: true,
+	})
+	if err != nil {
+		panic(err)
+	}
+	context = opengl.NewContext(webglContext)
+}
+
+func Start(width, height, scale int, title string) (actualScale int, err error) {
+	return scale, nil
+}