When winning the campaign there is a lock that waits for the old server to stop before allowing to continue with restarting the server. While the lock was released on PC builds as the server runs differently on Android this was missed making campaigns always hang the app when you win.
This change adds a new native method that can be called from the Android app to signal that the server has stopped, so the client can continue with requesting a new server and showing the new campaign scenatio screen.
Note: this change alone doesn't fix the bug but it's required for a fix on vcmi-android's side. It doesn't break anything and can be merged before the vcmi-android changes
Defect:
After my previous change that enabled map layer (`CAdvMapInt`) to listen to all mouse move events via `strongInterest` bool, I noticed that there are a few scenario that start scrolling the map unexpectedly. The two that were the easiest to reproduce were using keyboard arrows to move the hero or dimissing a popup dialog.
I traced this down to unexpected mouse move event (`SDL_MouseMotionEvent`) that SDL seems to dispatch in this situation. The windowID that comes with the event in this scenario is 0 (so no window with mouse focus). I don't know why SDL dispatches this mysterious (to me) mouse move event in that case (note that there is no actual mouse movement in either repro case).
Fix:
Don't handle the mouse move event if the windowID of the mouse motion event is 0.
Notes:
Impacts scrolling of the game map. Did some play testing and didn't notice the scrolling not working when expected. The two specific cases where the map would scroll unexpectedly (move a hero with keyboard arrows or dismiss a popup dialog) no longer move the map.
In fullscreen mode, when the adventure window size does not fill the entire monitor (leaving black bars on each side), mouse movement is ignored in these areas. This results in difficulty scrolling the map in fullscreen mode, since you have to be exactly within [0,15] of the edge of the adventure window.
Fix:
Have the adventure map element, CAdvMapInt, subscribe to all mouse move events by setting the `strongInterest` bool to true. This will extend the scroll region to [min, 15], eliminating the dead mouse move space on the side of the window.
Notes:
Impacts adventure window mouse move event handling. Manually validated the scrolling the map now works without having to precisely aim for the edge of the window.
