bigger showChoice - workaround to cover all choices

for some reason the code couldn't cover all the choice options, so I hacked some additonal fixes

src/game_interpreter.cpp

@@ -826,7 +826,7 @@ bool Game_Interpreter::ExecuteCommand(lcf::rpg::EventCommand const& com) {
 			return CommandManiacControlStrings(com);
 		case Cmd::Maniac_CallCommand:
 			return CommandManiacCallCommand(com);
-		case 3029:
+		case static_cast<Game_Interpreter::Cmd>(3029):
 			return CommandManiacControlMessage(com);
 		default:
 			return true;
@@ -1126,6 +1126,8 @@ bool Game_Interpreter::CommandShowChoices(lcf::rpg::EventCommand const& com) { /
 
 	// Choices setup
 	std::vector<std::string> choices = GetChoices(Game_Message::GetMaxLine());
+	choices.push_back(""); //workaround to make last choice selectable when 5 or more lines.
+
 	pm.SetChoiceCancelType(com.parameters[0]);
 	SetupChoices(choices, com.indent, pm);
 

src/game_message.cpp

@@ -371,8 +371,11 @@ Game_Message::ParseParamResult Game_Message::ParseActor(const char* iter, const
 }
 
 int Game_Message::GetMaxLine() {
+	int output = 0;
 	if (window->GetHeight() == MESSAGE_BOX_HEIGHT)
-		return 4;
-	// return window->GetMaxLinesPerPage();
-	 return (window->GetHeight() - 16 ) / 16;
+		output = 4;
+	else
+		output = (window->GetHeight() - 16 ) / 16;
+
+	return output + 1; //workaround to make last choice selectable when 4 lines.
 }