use getter function for screenw/h in input.cpp

Author: no-lex

src/engine/interface/input.cpp

@@ -114,7 +114,7 @@ static bool filterevent(const SDL_Event &event)
         case SDL_MOUSEMOTION:
             if(grabinput && !relativemouse && !(SDL_GetWindowFlags(screen) & SDL_WINDOW_FULLSCREEN))
             {
-                if(event.motion.x == screenw / 2 && event.motion.y == screenh / 2)
+                if(event.motion.x == hudw() / 2 && event.motion.y == hudh() / 2)
                 {
                     return false;  // ignore any motion events generated by SDL_WarpMouse
                 }
@@ -188,7 +188,7 @@ static void resetmousemotion()
 {
     if(grabinput && !relativemouse && !(SDL_GetWindowFlags(screen) & SDL_WINDOW_FULLSCREEN))
     {
-        SDL_WarpMouseInWindow(screen, screenw / 2, screenh / 2); //move to middle of screen
+        SDL_WarpMouseInWindow(screen, hudw() / 2, hudh() / 2); //move to middle of screen
     }
 }
 
@@ -328,8 +328,8 @@ void checkinput(int map)
                         if(!(SDL_GetWindowFlags(screen) & SDL_WINDOW_FULLSCREEN))
                         {
                             //need to cast enums to ints for std's clamp implementation
-                            scr_w = std::clamp(screenw, static_cast<int>(SCR_MINW), static_cast<int>(SCR_MAXW));
-                            scr_h = std::clamp(screenh, static_cast<int>(SCR_MINH), static_cast<int>(SCR_MAXH));
+                            scr_w = std::clamp(hudw(), static_cast<int>(SCR_MINW), static_cast<int>(SCR_MAXW));
+                            scr_h = std::clamp(hudh(), static_cast<int>(SCR_MINH), static_cast<int>(SCR_MAXH));
                         }
                         gl_resize();
                         break;