Ticket #8187: actor-redraw-hack.diff

scummvm/scumm/scummvm.cpp

@@ -628 +628 @@
                 if (camera._cur.x != camera._last.x || _BgNeedsRedraw || _fullRedraw
                                 || (_features & GF_AFTER_V7 && camera._cur.y != camera._last.y)) {
                         redrawBGAreas();
+
+                        // HACK: redrawBGAreas() will mark any actor that was
+                        // was on screen both before and after the camera
+                        // moved, but not always the actors that scrolled into
+                        // view. The hacky solution is to mark all actors in
+                        // the room for redrawing, or the actor may stay hidden
+                        // until it moves.
+                        //
+                        // An alternative - and maybe better - solution would
+                        // be if drawCostume() always updated the usage bits
+                        // for the actor, even when the actor is drawn
+                        // off-screen.
+
+                        bool redraw = _fullRedraw;
+                        _fullRedraw = true;
+                        setActorRedrawFlags(true, false);
+                        _fullRedraw = redraw;
                 }
 
                 processDrawQue();