Muwuriel

Sorry if this is messy, as I'm new to this forum. I'm programming a VN where my MC will find people based on where she locates herself on a map of her school. Example: She can go to "rooftop or cafeteria", and there she will find someone at a random stat percentage of chance. I need to program how to click on that location on a image that will be static onto the screen until you make a choice, then program the percentage for a person to greet her there. Can someone help me work this out? Thanks in advance! ;w;