Break flow out of ordoor

internal/ui/window.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"runtime/debug"
 	"runtime/pprof"
 
 	"github.com/hajimehoshi/ebiten"
@@ -67,7 +68,18 @@ func (w *Window) Layout(_, _ int) (int, int) {
 	return w.xRes, w.yRes
 }
 
-func (w *Window) Update(screen *ebiten.Image) error {
+func (w *Window) Update(screen *ebiten.Image) (outErr error) {
+	// Ebiten does not like it if we panic inside its main loop
+	defer func() {
+		if panicErr := recover(); panicErr != nil {
+			if w.debug {
+				debug.PrintStack()
+			}
+
+			outErr = fmt.Errorf("Panic: %v", panicErr)
+		}
+	}()
+
 	if err := w.game.Update(screen.Size()); err != nil {
 		return err
 	}