What you wanna do is fairly simple. Since you said you have an idea to do most of the command except how to actually start the event, I will just mention about this. They are easy as well, just remember:
- When you want to have an event that starts immediately when the character enter the map (in this case, start the game), the event has to be an Autorun Event.
In order to make it so, when you create an event, in the below left, there is a Trigger option, choose Autorun here.
- After you finish the event, if you leave an autorun event like that normally, it will loop on and on again until forever. In order to turn off an autorun event, you should add this at the end of the event:
Control Self Switch, Operate Switch A On
Then on the upper part of the event creating page, choose New Event Page, then on the left side, tick Self Switch.
For starters, I recommend you tinker around more with event before attempting to make a game (all the options that the event creating has to offer, since they are there for a reason
). You should practice with Switch and Varible, since they are completely essential to making just any game. Tutorials on that should be found in the Tutorial section, so feel free to take a look
Good luck