Add ui.Run

.gitignore

@@ -1,3 +1,2 @@
 .DS_Store
 *~
-

example/blocks/field.go

@@ -93,7 +93,7 @@ func (f *Field) Flush() {
 	}
 }
 
-func (f *Field) Draw(context graphics.Context, textures Textures, geo matrix.Geometry) {
+func (f *Field) Draw(context graphics.Context, textures *Textures, geo matrix.Geometry) {
 	blocks := make([][]BlockType, len(f.blocks))
 	for i, blockCol := range f.blocks {
 		blocks[i] = make([]BlockType, len(blockCol))

example/blocks/font.go

@@ -17,12 +17,7 @@ func textWidth(str string) int {
 	return charWidth * len(str)
 }
 
-func drawText(
-	context graphics.Context,
-	textures Textures,
-	str string,
-	x, y, scale int,
-	clr color.Color) {
+func drawText(context graphics.Context, textures *Textures, str string, x, y, scale int, clr color.Color) {
 	fontTextureId := textures.GetTexture("font")
 	parts := []graphics.TexturePart{}
 
@@ -53,12 +48,7 @@ func drawText(
 	context.Texture(fontTextureId).Draw(parts, geoMat, clrMat)
 }
 
-func drawTextWithShadow(
-	context graphics.Context,
-	textures Textures,
-	str string,
-	x, y, scale int,
-	clr color.Color) {
+func drawTextWithShadow(context graphics.Context, textures *Textures, str string, x, y, scale int, clr color.Color) {
 	drawText(context, textures, str, x+1, y+1, scale, color.RGBA{0, 0, 0, 0x80})
 	drawText(context, textures, str, x, y, scale, clr)
 }

example/blocks/game.go

@@ -23,33 +23,28 @@ type GameState struct {
 	Input        *Input
 }
 
-type Textures interface {
-	RequestTexture(name string, path string)
-	RequestRenderTarget(name string, size Size)
-	Has(name string) bool
-	GetTexture(name string) graphics.TextureId
-	GetRenderTarget(name string) graphics.RenderTargetId
-}
-
 type Game struct {
 	sceneManager *SceneManager
 	input        *Input
-	textures     Textures
+	textures     *Textures
 }
 
-func NewGame(textures Textures) *Game {
+func NewGame() *Game {
 	game := &Game{
 		sceneManager: NewSceneManager(NewTitleScene()),
 		input:        NewInput(),
-		textures:     textures,
 	}
+	return game
+}
+
+func (game *Game) SetTextureFactory(textureFactory graphics.TextureFactory) {
+	game.textures = NewTextures(textureFactory)
 	for name, path := range texturePaths {
 		game.textures.RequestTexture(name, path)
 	}
 	for name, size := range renderTargetSizes {
 		game.textures.RequestRenderTarget(name, size)
 	}
-	return game
 }
 
 func (game *Game) isInitialized() bool {

example/blocks/gamescene.go

@@ -97,7 +97,7 @@ func (s *GameScene) Update(state *GameState) {
 	}
 }
 
-func (s *GameScene) Draw(context graphics.Context, textures Textures) {
+func (s *GameScene) Draw(context graphics.Context, textures *Textures) {
 	context.Fill(0xff, 0xff, 0xff)
 
 	field := textures.GetTexture("empty")
@@ -108,24 +108,13 @@ func (s *GameScene) Draw(context graphics.Context, textures Textures) {
 	geoMat.Translate(20, 20) // magic number?
 	colorMat := matrix.ColorI()
 	colorMat.Scale(color.RGBA{0, 0, 0, 0x80})
-	graphics.DrawWhole(
-		context.Texture(field),
-		emptyWidth,
-		emptyHeight,
-		geoMat,
-		colorMat)
+	graphics.DrawWhole(context.Texture(field), emptyWidth, emptyHeight, geoMat, colorMat)
 
 	geoMat = matrix.GeometryI()
 	geoMat.Translate(20, 20)
 	s.field.Draw(context, textures, geoMat)
 
 	if s.currentPiece != nil {
-		s.currentPiece.Draw(
-			context,
-			textures,
-			20, 20,
-			s.currentPieceX,
-			s.currentPieceY,
-			s.currentPieceAngle)
+		s.currentPiece.Draw(context, textures, 20, 20, s.currentPieceX, s.currentPieceY, s.currentPieceAngle)
 	}
 }

example/blocks/piece.go

@@ -123,11 +123,7 @@ const blockHeight = 10
 const fieldBlockNumX = 10
 const fieldBlockNumY = 20
 
-func drawBlocks(
-	context graphics.Context,
-	textures Textures,
-	blocks [][]BlockType,
-	geo matrix.Geometry) {
+func drawBlocks(context graphics.Context, textures *Textures, blocks [][]BlockType, geo matrix.Geometry) {
 	parts := []graphics.TexturePart{}
 	for i, blockCol := range blocks {
 		for j, block := range blockCol {
@@ -209,12 +205,7 @@ func (p *Piece) AbsorbInto(field *Field, x, y int, angle Angle) {
 	}
 }
 
-func (p *Piece) Draw(
-	context graphics.Context,
-	textures Textures,
-	fieldX, fieldY int,
-	pieceX, pieceY int,
-	angle Angle) {
+func (p *Piece) Draw(context graphics.Context, textures *Textures, fieldX, fieldY int, pieceX, pieceY int, angle Angle) {
 	size := len(p.blocks)
 	blocks := make([][]BlockType, size)
 	for i := range p.blocks {

example/blocks/scenemanager.go

@@ -14,7 +14,7 @@ func init() {
 
 type Scene interface {
 	Update(state *GameState)
-	Draw(context graphics.Context, textures Textures)
+	Draw(context graphics.Context, textures *Textures)
 }
 
 const transitionMaxCount = 20
@@ -45,7 +45,7 @@ func (s *SceneManager) Update(state *GameState) {
 	}
 }
 
-func (s *SceneManager) Draw(context graphics.Context, textures Textures) {
+func (s *SceneManager) Draw(context graphics.Context, textures *Textures) {
 	if s.transitionCount == -1 {
 		s.current.Draw(context, textures)
 		return

example/blocks/textures.go

@@ -1,7 +1,6 @@
-package main
+package blocks
 
 import (
-	"github.com/hajimehoshi/ebiten/example/blocks"
 	"github.com/hajimehoshi/ebiten/graphics"
 	"image"
 	"os"
@@ -15,7 +14,7 @@ type namePath struct {
 
 type nameSize struct {
 	name string
-	size blocks.Size
+	size Size
 }
 
 type Textures struct {
@@ -94,7 +93,7 @@ func (t *Textures) RequestTexture(name string, path string) {
 	t.texturePaths <- namePath{name, path}
 }
 
-func (t *Textures) RequestRenderTarget(name string, size blocks.Size) {
+func (t *Textures) RequestRenderTarget(name string, size Size) {
 	t.renderTargetSizes <- nameSize{name, size}
 }
 

example/blocks/titlescene.go

@@ -26,7 +26,7 @@ func (s *TitleScene) Update(state *GameState) {
 	}
 }
 
-func (s *TitleScene) Draw(context graphics.Context, textures Textures) {
+func (s *TitleScene) Draw(context graphics.Context, textures *Textures) {
 	drawTitleBackground(context, textures, s.count)
 	drawLogo(context, textures, "BLOCKS")
 
@@ -36,7 +36,7 @@ func (s *TitleScene) Draw(context graphics.Context, textures Textures) {
 	drawTextWithShadow(context, textures, message, x, y, 1, color.RGBA{0x80, 0, 0, 0xff})
 }
 
-func drawTitleBackground(context graphics.Context, textures Textures, c int) {
+func drawTitleBackground(context graphics.Context, textures *Textures, c int) {
 	const textureWidth = 32
 	const textureHeight = 32
 
@@ -60,7 +60,7 @@ func drawTitleBackground(context graphics.Context, textures Textures, c int) {
 	context.Texture(backgroundTextureId).Draw(parts, geo, clr)
 }
 
-func drawLogo(context graphics.Context, textures Textures, str string) {
+func drawLogo(context graphics.Context, textures *Textures, str string) {
 	scale := 4
 	textWidth := textWidth(str) * scale
 	x := (ScreenWidth - textWidth) / 2

example/main.go

@@ -2,57 +2,17 @@ package main
 
 import (
 	"github.com/hajimehoshi/ebiten/example/blocks"
-	"github.com/hajimehoshi/ebiten/graphics"
 	"github.com/hajimehoshi/ebiten/ui"
 	"github.com/hajimehoshi/ebiten/ui/glfw"
-	"os"
-	"os/signal"
 	"runtime"
-	"syscall"
-	"time"
 )
 
-type Game interface {
-	Update(state ui.InputState)
-	Draw(c graphics.Context)
-}
-
 func init() {
 	runtime.LockOSThread()
 }
 
 func main() {
-	const screenWidth = blocks.ScreenWidth
-	const screenHeight = blocks.ScreenHeight
-	const screenScale = 2
-	const fps = 60
-	const frameTime = time.Duration(int64(time.Second) / int64(fps))
-	const title = "Ebiten Demo"
-
 	u := new(glfw.UI)
-	canvas := u.CreateCanvas(screenWidth, screenHeight, screenScale, title)
-
-	textureFactory := u.TextureFactory()
-	game := blocks.NewGame(NewTextures(textureFactory))
-	tick := time.Tick(frameTime)
-
-	sigterm := make(chan os.Signal, 1)
-	signal.Notify(sigterm, os.Interrupt, syscall.SIGTERM)
-
-	u.Start()
-	defer u.Terminate()
-	for {
-		u.DoEvents()
-		select {
-		default:
-			canvas.Draw(game.Draw)
-		case <-tick:
-			game.Update(canvas.InputState())
-			if canvas.IsClosed() {
-				return
-			}
-		case <-sigterm:
-			return
-		}
-	}
+	game := blocks.NewGame()
+	ui.Run(u, game, blocks.ScreenWidth, blocks.ScreenHeight, 2, "Ebiten Demo", 60)
 }

readme.md

@@ -23,7 +23,7 @@ changed easily.
 
 ```
 :; cd $GOHOME/src/github.com/hajimehoshi/ebiten/example
-:; go run *.go
+:; go run main.go
 ```
 
 ## License

ui/glfw/ui.go

@@ -17,16 +17,13 @@ type UI struct {
 	canvas *Canvas
 }
 
-func (u *UI) CreateCanvas(width, height, scale int, title string) ui.Canvas {
+func (u *UI) Start(width, height, scale int, title string) (ui.Canvas, graphics.TextureFactory) {
 	if !glfw.Init() {
 		panic("glfw.Init() fails")
 	}
 	glfw.WindowHint(glfw.Resizable, glfw.False)
 	u.canvas = NewCanvas(width, height, scale, title)
-	return u.canvas
-}
-
-func (u *UI) Start() {
+	return u.canvas, u.canvas
 }
 
 func (u *UI) DoEvents() {
@@ -37,7 +34,3 @@ func (u *UI) DoEvents() {
 func (u *UI) Terminate() {
 	glfw.Terminate()
 }
-
-func (u *UI) TextureFactory() graphics.TextureFactory {
-	return u.canvas
-}

ui/run.go

@@ -0,0 +1,41 @@
+package ui
+
+import (
+	"github.com/hajimehoshi/ebiten/graphics"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+type Game interface {
+	Draw(context graphics.Context)
+	Update(inputState InputState)
+	SetTextureFactory(textureFactory graphics.TextureFactory)
+}
+
+func Run(u UI, game Game, width, height, scale int, title string, fps int) {
+	canvas, textureFactory := u.Start(width, height, scale, title)
+	game.SetTextureFactory(textureFactory)
+
+	frameTime := time.Duration(int64(time.Second) / int64(fps))
+	tick := time.Tick(frameTime)
+	sigterm := make(chan os.Signal, 1)
+	signal.Notify(sigterm, os.Interrupt, syscall.SIGTERM)
+
+	defer u.Terminate()
+	for {
+		u.DoEvents()
+		select {
+		default:
+			canvas.Draw(game.Draw)
+		case <-tick:
+			game.Update(canvas.InputState())
+			if canvas.IsClosed() {
+				return
+			}
+		case <-sigterm:
+			return
+		}
+	}
+}

ui/ui.go

@@ -16,8 +16,7 @@ const (
 )
 
 type UI interface {
-	CreateCanvas(widht, height, scale int, title string) Canvas
-	Start()
+	Start(widht, height, scale int, title string) (Canvas, graphics.TextureFactory)
 	DoEvents()
 	Terminate()
 }