Booleans? Created 21 years ago2003-11-07 06:17:46 UTC by Clownfish

Hi there!

I used to do some mapping a few years back and forgot a lot of it now. Maybe you can help me out.
Do I need entities with boolean (trigger on/off)-properties to act on a multisource? Like buttons etc... What if I want to use a trigger_multiple or a func_breakable to change the state of a multisource? Is there any boolean variables I can switch on and off with such an event, that can work as a master for a locked door or a multisource? I thought trigger_relay would work for this but it doesnt... How do I do it? :

Right now I want to shoot a lock to UNLOCK a door (not just open it - I did that).... Whattayasay?

I have no idea; think that works fine, pretty sure I've done it myself before. Not positive, though.

boolean. is this sum sort of made up word like "supercalifragalisticexpialidochious" or "peace"?

PLEASE DON'T SPAM, PEOPLE!

Boolean logic is things like AND, OR, XOR, NOR, etc; kinda like for search engines. I believe it originated in basic electronic logic?

Halflife has VERY limited boolean logic, usually ON or OFF. Don't expect any proper programming if/then/else logic as halflife (and hl2's from what I know) entity system wasn't designed to do anything.

...XOR?NOR?

yep

queer.

Ahh... Amstrad and Spectrum... Boolean system... If, then, else, or... Logic operators... These were good times (sorry for this little spam but I feel nostalgic).

Well, they're still around!

I reckon you could make more complicated logic using multi_managers and multisources. That's pretty much how it is in real life, remember :cool:.

NOR - If all false YES, else NO
XOR - If different YES, all other cases NO

I love logic gates, however I will again say you CANT do advanced boolean logic in halflife, despite what entities you use! Easy example, you want something to happen when a player is NOT standing in a field, there really isn't a proper way of doing that.

if you don't have nothing helpfull to add don't say it

multimanagers and env_globals are the easyest to work with,
have a look around the verc collective for a tutorial

I THINK I've sorted it out now... but on the other hand, as soon as you do, it seems to turn agains you... But I think: If you make anything (like a func_breakable) act on a trigger_relay (trigger set on ON) that triggers a multisource, this multisource will act as a boolean "true", i.e. "ON" after triggering the first entity(shooting the fun_breakable). Add a few trigger_relays to that multisource and you have the boolean operator AND...
OR is eaven simpler, that's of course when a couple of different triggers target the same event.
NOT might be done in a couple of ways, maybe... If a trigger_multiple triggers a trigger_relay (set to OFF) on a multisource, and this trigger_multiple is surrounded by another trigger_mutiple that through a trigger_relay sets anything back to ON, the event will always be turned OFF when you go into the area... Right?

Whatever, I won't bother yoiu with this anymore. My own problem now...