Handle some more errors.

2 files changed, 21 insertions, 10 deletions

diff --git a/numbers/numbers.go b/numbers/numbers.go
index 7a2194a..f4f90b2 100644
--- a/numbers/numbers.go
+++ b/numbers/numbers.go
@@ -25,21 +25,25 @@ func drawDigit(renderer *sdl.Renderer, d int, x, y int32) error {
 		thickness = 10
 	)
 	for _, segment := range digitSegments[d] {
+		var err error
 		switch segment {
 		case 0:
-			renderer.FillRect(&sdl.Rect{X: x, Y: y, W: width, H: thickness})
+			err = renderer.FillRect(&sdl.Rect{X: x, Y: y, W: width, H: thickness})
 		case 1:
-			renderer.FillRect(&sdl.Rect{X: x, Y: y, W: thickness, H: height / 2})
+			err = renderer.FillRect(&sdl.Rect{X: x, Y: y, W: thickness, H: height / 2})
 		case 2:
-			renderer.FillRect(&sdl.Rect{X: x + width - thickness, Y: y, W: thickness, H: height / 2})
+			err = renderer.FillRect(&sdl.Rect{X: x + width - thickness, Y: y, W: thickness, H: height / 2})
 		case 3:
-			renderer.FillRect(&sdl.Rect{X: x, Y: y + height/2 - thickness/2, W: width, H: thickness})
+			err = renderer.FillRect(&sdl.Rect{X: x, Y: y + height/2 - thickness/2, W: width, H: thickness})
 		case 4:
-			renderer.FillRect(&sdl.Rect{X: x, Y: y + height/2, W: thickness, H: height / 2})
+			err = renderer.FillRect(&sdl.Rect{X: x, Y: y + height/2, W: thickness, H: height / 2})
 		case 5:
-			renderer.FillRect(&sdl.Rect{X: x + width - thickness, Y: y + height/2, W: thickness, H: height / 2})
+			err = renderer.FillRect(&sdl.Rect{X: x + width - thickness, Y: y + height/2, W: thickness, H: height / 2})
 		case 6:
-			renderer.FillRect(&sdl.Rect{X: x, Y: y + height - thickness, W: width, H: thickness})
+			err = renderer.FillRect(&sdl.Rect{X: x, Y: y + height - thickness, W: width, H: thickness})
+		}
+		if err != nil {
+			return err
 		}
 	}
 	return nil
diff --git a/pongo.go b/pongo.go
index 2a68a0d..01c6a8d 100644
--- a/pongo.go
+++ b/pongo.go
@@ -195,7 +195,9 @@ func pong() error {
 			ball.pos = ball.pos.add(ball.velocity)
 			switch {
 			case ball.bounds().HasIntersection(paddle1.bounds()) && ball.velocity.x <= 0:
-				ping.Play(-1, 0)
+				if _, err := ping.Play(-1, 0); err != nil {
+					fmt.Fprintln(os.Stderr, err)
+				}
 				d := ball.pos.y - paddle1.pos
 				if d < 0 {
 					d = -d
@@ -207,7 +209,9 @@ func pong() error {
 				speed := ballSpeed * (1 + 4*d/(float64(paddle1.bounds().H)/2+float64(ball.bounds().H)))
 				ball.velocity = vector2{speed * math.Cos(angle), speed * math.Sin(angle)}
 			case ball.bounds().HasIntersection(paddle2.bounds()) && ball.velocity.x >= 0:
-				ping.Play(-1, 0)
+				if _, err := ping.Play(-1, 0); err != nil {
+					fmt.Fprintln(os.Stderr, err)
+				}
 				d := ball.pos.y - paddle2.pos
 				if d < 0 {
 					d = -d
@@ -226,7 +230,9 @@ func pong() error {
 				playerScore++
 				ball.reset(left)
 			case ball.bounds().Y <= 0 && ball.velocity.y < 0 || rectBottom(ball.bounds()) >= screenHeight && ball.velocity.y > 0:
-				ping.Play(-1, 0)
+				if _, err := ping.Play(-1, 0); err != nil {
+					fmt.Fprintln(os.Stderr, err)
+				}
 				ball.velocity.y = -ball.velocity.y
 			}
 		}
@@ -272,5 +278,6 @@ func pong() error {
 func main() {
 	if err := pong(); err != nil {
 		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
 	}
 }