(SM) Add overlay icons (missile/energy/boss/etc) on minimap?

[Grahf]

Hi, I'm sorry if this is a noob question, but I want to validate if what i'm thinking is right or not.

Basically, I'm trying to make the overlay icons (energy station, missile station, etc) appear on the minimap after they have been discovered.

From what I've been reading and debugging, the minimap tiles are stored into the HUD tilemap in ram, so is it really impossible to write something on top of it? Is this an engine limitation?

You might suggest using a map tile instead of an overlay icon, but the thing is I want to add some additional logic to check for a specific event to determine if the icon is shown or not, so I definitely will need to hijack and draw an icon on top of the current tilemap.

Thanks in advance.