Door script 0.2

/*

   Fu's talking door script

   v0.2
   - locking door latch
   - "CONSTANTS" for code clarity

   v0.1
   - state changes
   - passing data between states
   - llListen() and listen event handler

   v0.0
   - basic states

   (c)2017 - Fu Barr (OSGrid)

/

integer DEBUG = FALSE;

string code_lock = "Lockus locke"; string code_unlock = "Unlockus locke";

string latch;

string txt_unlocked = "This door is now unlocked."; string txt_locked = "This door is now locked."; string txt_noentry = "Locked. Your pixels may not pass!"; string txt_welcome = "Welcome, ";

key avatar_uuid;

default {

   on_rez(integer r) {

       llResetScript();
   }

   state_entry() {

       latch = "UNLOCKED";

       llOwnerSay("running " + llGetScriptName());

       state closed;
   }

}

state closed {

   state_entry() {

       llListen(0, "", NULL_KEY, code_unlock);     // using two llListen() for early channel 0 chat filter
       llListen(0, "", NULL_KEY, code_lock);
   }

   touch_end(integer t){

       if(latch == "LOCKED") {

           llSay(0, txt_noentry);

       } else {

           avatar_uuid = llDetectedKey(0);

           state open;
       }
   }

   listen(integer channel, string name, key uuid, string msg) {

       if(DEBUG){llOwnerSay("closed::listen() key: " + uuid);}

       if(msg == code_unlock){

           latch = "UNLOCKED";

           llSay(0, txt_unlocked);

       } else if(msg == code_lock) {

           latch = "LOCKED";

           llSay(0, txt_locked);
       }
   }

   state_exit() {

       // TODO: swing door open
   }

}

state open {

   state_entry() {

       llSay(0, txt_welcome + llKey2Name(avatar_uuid));

       state closed;
   }

   state_exit() {

       // TODO: swing door shut
   }

}

</source>