Allow ALT+ENTER to instantly switch between 1X and 2X modes if conditions are met

Author: MaximDude

Managers/FrameMan.cpp

@@ -328,7 +328,8 @@ namespace RTE {
 		if (multiplier <= 0 || multiplier > 4 || multiplier == m_ResMultiplier) {
 			return -1;
 		}
-		if (m_ResX > m_ScreenResX / multiplier) { 
+		if (m_ResX > m_ScreenResX / multiplier || m_ResY > m_ScreenResY / multiplier) {
+			allegro_message("Requested resolution multiplier will result in game window exceeding display bounds!\nNo change will be made!");
 			return -1;
 		}
 

Managers/UInputMan.cpp

@@ -2793,6 +2793,10 @@ int UInputMan::Update()
             g_ConsoleMan.PrintString("SYSTEM: Activity was reset!");
     }
 
+	if (key_shifts & KB_ALT_FLAG && KeyPressed(KEY_ENTER)) {
+		g_FrameMan.SwitchResolutionMultiplier((g_FrameMan.ResolutionMultiplier() >= 2) ? 1 : 2);
+	}
+
     // Only allow performance tweaking if showing the stats
     if (g_PerformanceMan.IsShowingPerformanceStats())
     {