I recently started hacking in Pokemon Emerald,i can't understand how to make the truck after getting to the house after the first level script dissapear!
Also i can see the Mom sprite in littleroot town in the house in the A-M but it's not visible in the game only when you getting out of the truck and it comes out of the door,basically
the question is how to make a sprite be visible in a certain time on event and after the event will dissapear??
You would use flags on each object to accomplish that. This is a fundamental so I strongly suggest reading a full overworld scripting tutorial: https://www.pokecommunity.com/showpost.php?p=9810740&postcount=26