Refactoring

example/main.go

@@ -51,7 +51,6 @@ func main() {
 	const fps = 60
 	const title = "Ebiten Demo"
 	ui := cocoa.New(screenWidth, screenHeight, screenScale, title)
-	ui.Start()
 	ui.InitTextures(game.InitTextures)
 
 	lock := sync.Mutex{}

ui/cocoa/cocoa.go

@@ -6,10 +6,11 @@ package cocoa
 // #include <stdlib.h>
 // #include "input.h"
 //
-// void Start(size_t width, size_t height, size_t scale, const char* title);
+// void StartApplication(void);
+// void* CreateWindow(size_t width, size_t height, const char* title);
 // void PollEvents(void);
-// void BeginDrawing(void);
-// void EndDrawing(void);
+// void BeginDrawing(void* window);
+// void EndDrawing(void* window);
 //
 import "C"
 import (
@@ -47,10 +48,10 @@ type UI struct {
 	screenWidth     int
 	screenHeight    int
 	screenScale     int
-	title           string
 	graphicsDevice  *opengl.Device
 	gameContext     *GameContext
 	gameContextLock sync.Mutex
+	window          unsafe.Pointer
 }
 
 var currentUI *UI
@@ -63,7 +64,6 @@ func New(screenWidth, screenHeight, screenScale int, title string) *UI {
 		screenWidth:  screenWidth,
 		screenHeight: screenHeight,
 		screenScale:  screenScale,
-		title:        title,
 		gameContext: &GameContext{
 			screenWidth:  screenWidth,
 			screenHeight: screenHeight,
@@ -71,22 +71,22 @@ func New(screenWidth, screenHeight, screenScale int, title string) *UI {
 		},
 		gameContextLock: sync.Mutex{},
 	}
-	currentUI = ui
-	return ui
-}
 
-func (ui *UI) Start() {
-	cTitle := C.CString(ui.title)
+	cTitle := C.CString(title)
 	defer C.free(unsafe.Pointer(cTitle))
 
-	C.Start(C.size_t(ui.screenWidth),
-		C.size_t(ui.screenHeight),
-		C.size_t(ui.screenScale),
+	C.StartApplication()
+
+	ui.window = C.CreateWindow(C.size_t(ui.screenWidth * ui.screenScale),
+		C.size_t(ui.screenHeight * ui.screenScale),
 		cTitle)
 	ui.graphicsDevice = opengl.NewDevice(
 		ui.screenWidth,
 		ui.screenHeight,
 		ui.screenScale)
+
+	currentUI = ui
+	return ui
 }
 
 func (ui *UI) PollEvents() {
@@ -94,9 +94,9 @@ func (ui *UI) PollEvents() {
 }
 
 func (ui *UI) InitTextures(f func(graphics.TextureFactory)) {
-	C.BeginDrawing()
+	C.BeginDrawing(ui.window)
 	f(ui.graphicsDevice.TextureFactory())
-	C.EndDrawing()
+	C.EndDrawing(ui.window)
 }
 
 func (ui *UI) Update(f func(ebiten.GameContext)) {
@@ -106,9 +106,9 @@ func (ui *UI) Update(f func(ebiten.GameContext)) {
 }
 
 func (ui *UI) Draw(f func(graphics.Context)) {
-	C.BeginDrawing()
+	C.BeginDrawing(ui.window)
 	ui.graphicsDevice.Update(f)
-	C.EndDrawing()
+	C.EndDrawing(ui.window)
 }
 
 //export ebiten_InputUpdated

ui/cocoa/ebiten_controller.c

@@ -3,15 +3,6 @@
 #import "ebiten_controller.h"
 
 @implementation EbitenController {
-@private
-  NSWindow* window_;
-}
-
-- (id)initWithWindow:(NSWindow*)window {
-  if (self = [super init]) {
-    self->window_ = window;
-  }
-  return self;
 }
 
 - (void)initMenu {
@@ -32,9 +23,6 @@
 
 - (void)applicationDidFinishLaunching:(NSNotification*)aNotification {
   (void)aNotification;
-  NSWindow* window = self->window_;
-  assert(window);
-  [window makeKeyAndOrderFront:nil];
   [self initMenu];
 }
 

ui/cocoa/ebiten_controller.h

@@ -7,9 +7,6 @@
 
 @interface EbitenController : NSObject<NSApplicationDelegate>
 
-- (id)initWithWindow:(NSWindow*)window;
-- (void)applicationDidFinishLaunching:(NSNotification*)aNotification;
-
 @end
 
 #endif

ui/cocoa/ebiten_window.c

@@ -53,7 +53,6 @@
                                   initWithAttributes:attributes];
   self->glContext_ = [[NSOpenGLContext alloc] initWithFormat:format
                                                 shareContext:nil];
-  [self->glContext_ setView:[self contentView]];
   [self->glContext_ makeCurrentContext];
 
   [format release];
@@ -88,7 +87,7 @@
 }
 
 - (void)beginDrawing {
-  [self->glContext_ makeCurrentContext];
+  [self->glContext_ setView:[self contentView]];
   glClear(GL_COLOR_BUFFER_BIT);
 }
 
@@ -96,4 +95,8 @@
   [self->glContext_ flushBuffer];
 }
 
+- (BOOL)canBecomeMainWindow {
+  return YES;
+}
+
 @end

ui/cocoa/mainloop.c

@@ -5,7 +5,24 @@
 #import "ebiten_controller.h"
 #import "ebiten_window.h"
 
-static EbitenWindow* currentWindow = 0;
+void StartApplication() {
+  EbitenController* controller = [[EbitenController alloc] init];
+  NSApplication* app = [NSApplication sharedApplication];
+  [app setActivationPolicy:NSApplicationActivationPolicyRegular];
+  [app setDelegate:controller];
+  [app finishLaunching];
+  [app activateIgnoringOtherApps:YES];
+}
+
+void* CreateWindow(size_t width, size_t height, const char* title) {
+  NSSize size = NSMakeSize(width, height);
+  EbitenWindow* window = [[EbitenWindow alloc]
+                            initWithSize:size];
+  [window setTitle: [[NSString alloc] initWithUTF8String:title]];
+  [window makeKeyAndOrderFront:nil];
+  [window initializeGLContext];
+  return window;
+}
 
 void PollEvents(void) {
   for (;;) {
@@ -20,30 +37,10 @@ void PollEvents(void) {
   }
 }
 
-void Start(size_t width, size_t height, size_t scale, const char* title) {
-  NSSize size = NSMakeSize(width * scale, height * scale);
-  EbitenWindow* window = [[EbitenWindow alloc]
-                            initWithSize:size];
-  [window setTitle: [[NSString alloc] initWithUTF8String:title]];
-  EbitenController* controller = [[EbitenController alloc]
-                                    initWithWindow:window];
-  NSApplication* app = [NSApplication sharedApplication];
-  [app setActivationPolicy:NSApplicationActivationPolicyRegular];
-  [app setDelegate:controller];
-  [app finishLaunching];
-  [app activateIgnoringOtherApps:YES];
-
-  currentWindow = window;
-
-  PollEvents();
-
-  [window initializeGLContext];
+void BeginDrawing(void* window) {
+  [(EbitenWindow*)window beginDrawing];
 }
 
-void BeginDrawing(void) {
-  [currentWindow beginDrawing];
-}
-
-void EndDrawing(void) {
-  [currentWindow endDrawing];
+void EndDrawing(void* window) {
+  [(EbitenWindow*)window endDrawing];
 }