Trying to figure out how to program hitscan in Gamemaker

[geg]

Hi! I'm still figuring out some of the basics of gamemaker, and I wanted to ask if anybody knew of a way to program hitscan into a game. Specifically, I'd like to know how to ensure it only scans certain objects. For example, it would stop if it hit a wall first, but deal damage if it hit an enemy first. Any and all help is appreciated!

 

[samspade]

You're probably looking for something like a collision line.

Loop through all instances within a certain range using the with statement, check the angle (if you want) and check whether there is something like a wall between them. If not, they're hit.