Game Functions implementation

In the next coming days i will implement the general game functions.  Meaning i will implement a game manager which will control the gameplay like:

• when will the next wave start?
• when will enemies be spawned?
• when is the player allowed to buy new weapons and upgrades?
• when is the wave over?
• and many more...

I will upload screenshot and videos to show the progress of this to do. You, as a part of this community, are very welcome to suggest improvements in the comments.