Placing screen rendering on pause as well.

apple2sdl/main.go

@@ -76,31 +76,33 @@ func SDLRun(a *apple2.Apple2) {
 			paused = a.IsPaused()
 		}
 
-		img := apple2.Snapshot(a)
+		if !a.IsPaused() {
-		if img != nil {
+			img := apple2.Snapshot(a)
-			surface, err := sdl.CreateRGBSurfaceFrom(unsafe.Pointer(&img.Pix[0]),
+			if img != nil {
-				int32(img.Bounds().Dx()), int32(img.Bounds().Dy()),
+				surface, err := sdl.CreateRGBSurfaceFrom(unsafe.Pointer(&img.Pix[0]),
-				32, 4*img.Bounds().Dx(),
+					int32(img.Bounds().Dx()), int32(img.Bounds().Dy()),
-				0x0000ff, 0x0000ff00, 0x00ff0000, 0xff000000)
+					32, 4*img.Bounds().Dx(),
-			// Valid for little endian. Should we reverse for big endian?
+					0x0000ff, 0x0000ff00, 0x00ff0000, 0xff000000)
-			// 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff)
+				// Valid for little endian. Should we reverse for big endian?
+				// 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff)
 
-			if err != nil {
+				if err != nil {
-				panic(err)
+					panic(err)
+				}
+
+				texture, err := renderer.CreateTextureFromSurface(surface)
+				if err != nil {
+					panic(err)
+				}
+
+				renderer.Clear()
+				w, h := window.GetSize()
+				renderer.Copy(texture, nil, &sdl.Rect{X: 0, Y: 0, W: w, H: h})
+				renderer.Present()
+
+				surface.Free()
+				texture.Destroy()
 			}
-
-			texture, err := renderer.CreateTextureFromSurface(surface)
-			if err != nil {
-				panic(err)
-			}
-
-			renderer.Clear()
-			w, h := window.GetSize()
-			renderer.Copy(texture, nil, &sdl.Rect{X: 0, Y: 0, W: w, H: h})
-			renderer.Present()
-
-			surface.Free()
-			texture.Destroy()
 		}
 		sdl.Delay(1000 / 30)
 	}