Add current level hot reloading, during DEBUG, using F5 (#108)

Author: cacticrown

Platformer2D/Core/Screens/GameplayScreen.cs

@@ -252,7 +252,7 @@ private string GetLevelStats(string messageTitle)
 
     /// <summary>
     /// Processes player input and updates game state accordingly.
-    /// Handles pausing, level continuation, and player actions.
+    /// Handles pausing, hot level reloading, level continuation, and player actions.
     /// </summary>
     /// <param name="gameTime">Provides a snapshot of timing values.</param>
     /// <param name="inputState">Current input state for all input devices.</param>
@@ -288,6 +288,14 @@ public override void HandleInput(GameTime gameTime, InputState inputState)
         }
         else
         {
+            // Hot level reloading
+#if DEBUG
+            if (inputState.IsNewKeyPress(Keys.F5, null, out PlayerIndex index))
+            {
+                ReloadCurrentLevel();
+            }
+#endif
+
             // update our level, passing down the GameTime along with all of our input states
             level.Update(gameTime,
                 inputState,