fix rare crash for some players when window loses focus (#306)

2 files changed, 16 insertions, 3 deletions

diff --git a/release-notes.md b/release-notes.md
index ae2f853d..b1917ef7 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -22,6 +22,7 @@ For players:
   * `list_items` now also matches translated item names when playing in another language.
   * `list_item_types` is a new command to see a list of item types.
 * Added clearer error when a `config.json` is invalid.
+* Fixed rare crash when window loses focus for a few players (further to fix in 1.14).
 
 For modders:
 * You can now specify minimum dependency versions in `manifest.json`.
diff --git a/src/StardewModdingAPI/Framework/SGame.cs b/src/StardewModdingAPI/Framework/SGame.cs
index 80ae20ac..39713d4a 100644
--- a/src/StardewModdingAPI/Framework/SGame.cs
+++ b/src/StardewModdingAPI/Framework/SGame.cs
@@ -344,9 +344,21 @@ namespace StardewModdingAPI.Framework
                 if (Game1.game1.IsActive)
                 {
                     // get latest state
-                    KeyboardState keyState = Keyboard.GetState();
-                    MouseState mouseState = Mouse.GetState();
-                    Point mousePosition = new Point(Game1.getMouseX(), Game1.getMouseY());
+                    KeyboardState keyState;
+                    MouseState mouseState;
+                    Point mousePosition;
+                    try
+                    {
+                        keyState = Keyboard.GetState();
+                        mouseState = Mouse.GetState();
+                        mousePosition = new Point(Game1.getMouseX(), Game1.getMouseY());
+                    }
+                    catch (InvalidOperationException) // GetState() may crash for some players if window doesn't have focus but game1.IsActive == true
+                    {
+                        keyState = this.PreviousKeyState;
+                        mouseState = this.PreviousMouseState;
+                        mousePosition = this.PreviousMousePosition;
+                    }
 
                     // analyse state
                     Keys[] currentlyPressedKeys = keyState.GetPressedKeys();