challenge problem in Developer Help

ID:140168
 
Apr 13 2010, 10:41 am
Code:
mob/verb/challenge(mob/M)
    if(src.ingame == 0)
        if(M.ingame == 0)
            M << "<b>Info</b>:<i>[src] has challenged you to a duel</i>."
            sleep(10)
            var/response
            input(M,"Do you accept","[src] has challenged you to a duel",response) in list("Yes","No")
            if(response == "No")
                src << "<b>Info</b>:<i>[M] has Declined the challenge.</i>"
                return
            if(response == "Yes")
                src << "<b>Info</b>:<i>[M] has Accepted the challenge. You have 30seconds to equip before the fight.</i>"
                M << "<b>Info</b>:<i>You has Accepted the challenge. You have 30seconds to equip before the fight.</i>"
                sleep(200)
                src <<"<b>Info</b>:<i>10 seconds left...</i>"
                M <<"<b>Info</b>:<i>10 seconds left...</i>"
                sleep(100)
                battle(src,M)


Problem description:
doesnt do anything neither shows any messages
itss meant to let you challenge someone and then if u accept or not it will continue.
#1 Apr 13 2010, 11:21 am
You are not actually using the result of that input() call in any way. Look it up in the Reference.
#2 Apr 13 2010, 11:31 am
In response to Garthor (#1)
yet it still doesnt work. it doesn't even send the message saying you have been challenged by [src]
#3 Apr 13 2010, 11:53 am
In response to XnathanielX (#2)
Reread Gathor's statement, this is what you are doing 
var/result = null
(input result returned here, not used/stored anywhere)
if(result... which is still null since you didn't define what its new value is)


As for the message not being sent... are you sure that variable equals 0? Not null, not "" but 0 (because that is what you are looking for).
#4 Apr 13 2010, 12:17 pm
In response to GhostAnime (#3)
ah thanks it was actually not setting it to 0. i thought null would auto make it zero =/
#5 Apr 13 2010, 12:56 pm
In response to XnathanielX (#4)
null is null, not a numerical value of 0.

Remember that == looks for a specific value.

Now if you wanted to look for the three FALSE values in BYOND (which are 0, null and "" [FALSE is 0 as well]), you can do this: 
if(!var)
   world << {"This variable contains a FALSE value (either 0, null or "")"}

if(var)
   world << "This variable contains a TRUE value, any value except for the false values"


var/test = 0
if(test)
   world << "This is TRUE"
else
   world << "This is FALSE"  //  This will be outputted

var/dance = 1
for(var/i = 1 to 10)
   world << "Step [dance?"in":"out"]"
   dance = !dance   //  alternates between 1 (TRUE) and 0 (FALSE)


If you are wondering what X?Y:Z is about, think it as a mini-if statement.

X?Y:Z

// Same thing as saying

if(X)
   Y
else
   Z

world << "Hi there " + (src.name == "John" ? "John" : "Impostor")   //  If your name is not john, you're an Impostor!