Wow, the SnapMap is pretty cool. I've spent like 2 hours working with it and it's really easy to use once you figure it out (which is way easier than the usual map editors). And even though it's limited, you can easily create quite complex things. I've just created an intro section where you arrive with an elevator to a security checkpoint, I've made alarm sound go off repeatedly in one corner using repeater trigger, I've made another trigger with system announcement that you're arriving to a secure area when you pass through an invisible volume and made it disappear so it doesn't play every time you walk past that section. I've also made locked door and a console that is linked to this door and alarm. When you disable it, it shuts down the alarm and unlocks the door while also announcing that with computer voice. Oh and the door has it's own invisible trigger that says "Door locked" as you approach it, but only for as long as the door is locked. I've also reused a repeater for alarm and routed it through a randomized relay which randomly turns a certain light on and off in seemingly random intervals, creating murky atmosphere.
It's literally like LEGO, you just place blocks together and connect them with actions and triggers. When I first ran it, it felt really complex, but now it feels super easy to use. Too bad individual map segments are not modifiable, but you can place objects inside of them which can enrich the overall feel of the environment and you can also create a believable setup that doesn't feel empty and gives impression what it is the way you want it. In my case, I filled the security checkpoint with most basic zombies, some computers and chairs, placed a red light and alarm. Next to it is a waiting room with vending machines, tables and chairs with that flickering light.
Only thing a bit annoying is the loadout, you only seem to be able to carry 2 weapons at once which is a weird mechanic. I wanted the same presentation as with single player game where you can collect them all. I have to check the inventory triggers and settings, maybe something is there...
