Refactor

Player/Base/Player1Input.cs

@@ -0,0 +1,14 @@
+public partial class Player1Input : PlayerInput
+{
+   public override string Up() => "p1_up";
+
+   public override string Down() => "p1_down";
+
+   public override string Left() => "p1_left";
+
+   public override string Right() => "p1_right";
+
+   public override string Fire() => "p1_fire";
+
+   public override string AltFire() => "p1_altfire";
+}