update: bouncing ball exercise only uses the screen package

18-project-bouncing-ball/exercises/02-width-and-height/main.go

@@ -18,41 +18,25 @@ import (
 // ---------------------------------------------------------
 // EXERCISE: Adjust the width and height automatically
 //
-//  In this exercise, your goal is simple:
-//
 //    Instead of setting the width and height manually,
 //    you need to get the width and height of the terminal
 //    screen from your operating system.
 //
-//    Don't worry, it is easier than it sounds. You just
-//    need to read a few documentation and install a
-//    Go package.
-//
-//  1. Go here: https://godoc.org/golang.org/x/crypto/ssh/terminal
-//
-//     Download the package:
-//     go get -u golang.org/x/crypto/ssh/terminal
-//
-//  2. Find the function that gives you the width and height
-//     of the terminal.
-//
-//  3. Call that function from your program and get the
-//     width and height.
-//
-//  4. When an error occurs while retrieving the width
-//     and height, report it.
-//
-//  5. Set the width and height of the board.
-//
-//  6. After solving the above steps, update your program
-//     to use my screen package instead. It offers an
-//     easier way to get the width and height of a
-//     terminal.
+//  1. Update your program to use my screen package.
+//     It offers an easy way to get the width and height.
 //
 //     go get -u https://github.com/inancgumus/screen
 //
+//  2. Read the package's documentation and find a way to
+//     get the screen size: width and height.
 //
-// BONUS
+//     The documentation is here:
+//     https://godoc.org/github.com/inancgumus/screen
+//
+//  3. Use it to set the board's dimensions.
+//
+//
+// OPTIONAL EXERCISE
 //
 //  1. When you set the width, you may see that the ball
 //     goes beyond the left and right borders. This happens
@@ -83,19 +67,6 @@ import (
 //  wasn't matter whether your terminal was bigger or
 //  smaller, but now it will be!
 //
-//
-// HINT
-//
-//  Please take a look at this if you get stuck.
-//
-//  You need to pass the Standard Out file handler
-//  to the function that returns you the dimensions.
-//
-//  Check out my screen package to find out how I'm
-//  passing the Standard Out file handler.
-//
-//     https://github.com/inancgumus/screen/blob/master/dimensions.go
-//
 // ---------------------------------------------------------
 
 func main() {

18-project-bouncing-ball/exercises/02-width-and-height/solution/main.go

@@ -10,13 +10,11 @@ package main
 
 import (
 	"fmt"
-	"os"
 	"time"
 
 	"github.com/mattn/go-runewidth"
 
 	"github.com/inancgumus/screen"
-	"golang.org/x/crypto/ssh/terminal"
 )
 
 func main() {
@@ -35,15 +33,8 @@ func main() {
 		cell rune // current cell (for caching)
 	)
 
-	// get the width and height
-	width, height, err := terminal.GetSize(int(os.Stdout.Fd()))
-	if err != nil {
-		fmt.Println(err)
-		return
-	}
-
 	// you can get the width and height using the screen package easily:
-	// width, height := screen.Size()
+	width, height := screen.Size()
 
 	// get the rune width of the ball emoji
 	ballWidth := runewidth.RuneWidth(cellBall)