Add some redundant keybinds.

If I make the key bindings intuitive enough, there's no need for
documentation right?

1 files changed, 8 insertions, 9 deletions

diff --git a/pongo.go b/pongo.go
index 4ac9c40..fe11451 100644
--- a/pongo.go
+++ b/pongo.go
@@ -19,6 +19,10 @@ const (
 	paddleSpeed = 5
 )
 
+func keyPressed(key sdl.Keycode) bool {
+	return sdl.GetKeyboardState()[sdl.GetScancodeFromKey(key)] != 0
+}
+
 func rectRight(r *sdl.FRect) float32 {
 	return r.X + r.W
 }
@@ -140,9 +144,6 @@ func pong() error {
 	defer window.Destroy()
 	defer renderer.Destroy()
 
-	upPressed := false
-	downPressed := false
-
 	playerScore := 0
 	aiScore := 0
 
@@ -164,10 +165,8 @@ func pong() error {
 				return nil
 			case *sdl.KeyboardEvent:
 				switch t.Keysym.Sym {
-				case sdl.K_UP:
-					upPressed = t.State == sdl.PRESSED
-				case sdl.K_DOWN:
-					downPressed = t.State == sdl.PRESSED
+				case sdl.K_q, sdl.K_c, sdl.K_ESCAPE:
+					return nil
 				}
 			}
 		}
@@ -178,9 +177,9 @@ func pong() error {
 		const simulationSpeed = time.Second / 120
 		for ; accumulator >= simulationSpeed; accumulator -= simulationSpeed {
 			switch {
-			case upPressed && paddle1.bounds().Y >= 0:
+			case (keyPressed(sdl.K_UP) || keyPressed(sdl.K_w)) && paddle1.bounds().Y >= 0:
 				paddle1.pos -= paddleSpeed
-			case downPressed && rectBottom(paddle1.bounds()) <= screenHeight:
+			case (keyPressed(sdl.K_DOWN) || keyPressed(sdl.K_s)) && rectBottom(paddle1.bounds()) <= screenHeight:
 				paddle1.pos += paddleSpeed
 			}