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<div class="header">
The NakedMud Tutorial :: Creating Triggers
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<div class="head">Triggers</div>
<div class="info">
The main means of in-game scripting is to attach triggers to mobiles,
objects, and rooms. Triggers are scripts that execute when a pre-specified game
event occurs. For instance, someone speaking, entering or leaving a room, 
dropping an object, and so forth. Like the things they attach to, triggers
exist as game content within a zone. They have reference keys, just like
all other game content. Effectively, they are behaviors that are part of the
game world.
<p></p>
NakedMud comes with 14 built-in trigger types, which will each be covered in 
the next section. This section will explain how to bring up and use the trigger 
editor.
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<div class="head">tedit</div>
<div class="info">
The command for editing a trigger is tedit. If a key is specified, that 
trigger's information is brought up in the online editing tool. If the key does
not exist, a new trigger is created for that key.

<pre class="mud">
> <font class="cmd">tedit helloworld</font>

[helloworld@tutorial]
1) Name        : An Unfinished Trigger
2) Trigger type: &lt;NONE&gt;
3) Script Code
# trigger code goes here
# make sure to comment it with pounds (#)

Enter choice, ? [topic] for help, or Q to quit: 
</pre>

Every trigger must be given a type. This is the game event that causes
the trigger to run. Each type of trigger can only be attached to certain
game contents. When a trigger type is listed, what it can be attached to 
will also display. Let's create a speech trigger as a first example:

<pre class="mud">
Enter choice, ? [topic] for help, or Q to quit: <font class="cmd">2</font>
      Type                 Usable By
      -----------------------------------
   0) speech               mob, room                                        
   1) greet                mob                                              
   2) enter                mob, room                                        
   3) exit                 mob, room                                        
   4) move                 mob                                              
   5) drop                 obj, room                                        
   6) get                  obj, room                                        
   7) give                 obj, mob                                         
   8) receive              mob                                              
   9) wear                 mob                                              
  10) remove               obj, mob                                         
  11) reset                room                                             
  12) combat               mob                                              
  14) open                 obj, room                                        

Enter a trigger type: <font class="cmd">0</font>

[helloworld@tutorial]
1) Name        : An Unfinished Trigger
2) Trigger type: <font class="highlight">speech</font>
3) Script Code
# trigger code goes here
# make sure to comment it with pounds (#)

Enter choice, ? [topic] for help, or Q to quit: 
</pre>

Now let's set it up to be a room trigger; every time a person says 
hello world!, teleport them to a new room:
<pre class="mud">
[helloworld@tutorial]
1) Name        : <font class="highlight">Teleport the person to a new zone</font> 
2) Trigger type: speech
3) Script Code <font class="highlight">
if arg.lower() == "hello world!":
  ch.room = "startroom@magic_forest"
  ch.send("You say the magic words, and suddenly find yourself in a new place.")
  ch.act("look")
</font>
Enter choice, ? [topic] for help, or Q to quit: 
</pre>
When this trigger is attached to a room, every time a person in it says the
magic words they will be teleported to another room.
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<!--div class="footer">Edit Date: Nov 15, 2008. By Geoff Hollis</div-->
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