Misc fixes

- Prevent players from falling through the barrier before the match starts
- Prevent the server from crashing if you try to start a non-existant map

mods/game/chatcommands/init.lua

@@ -13,7 +13,12 @@ core.register_chatcommand("start", {
 			return false, "-!- Match is already in progress!"
 		end
 		
-		start_match(param)
+		local sucess = start_match(param)
+
+		if map_data == "nope :(" then
+			return false, "-!- Map not found!"
+		end
+
 		return true, "-!- Match started!"
 	end
 })