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== NPC police rappel ==

{{Note|This is part of a series of tutorials on NPC’s.}}

[[image:wiseNPCrappel01.jpg|thumb|150px|right|Rapelling]]

The sample file for this project, at the page bottom, illustrates:
# Player spawns in cement room with hole in ceiling.
# Combine Police rappels from hole.
# Once on ground begins attacking player.

These are very simple to setup in your maps.

I’m doing more in this project than is necessary.
# You don’t have to spawn the NPC with an [[npc_template_maker]]. Using one however is better on performance and keeps the NPC hidden until needed.
# You don’t need the [[aiscripted_schedule]]. But it is a simple addition creating a much better effect.

The simple method is to:
# Place an [[npc_metropolice]] entity in the map where you want it to rappel from.
# Set the property ''Waiting to rappel'' to ''Yes''.
# From any other entity, like a trigger, send the command ''BeginRappel''.

Using the simple method requires that you hide the [[npc_metropolice]] until its time to rappel.

=== Entities===

In this project the [[trigger_once]] is used to spawn the [[npc_metropolice]] by way of a [[npc_template_maker]].

==== trigger_once ====
{{entity-kvalue-start|[[trigger_once]]}} 
{{entity-kvalue|Start disabled|No|}} 
{{entity-kvalue-end}} 

{{entity-flag-start}}
{{entity-flag|Clients|on|}}
{{entity-flag-end}}

{{entity-output-start}}
{{entity-output||OnTrigger|rappel1maker|Spawn||||}}
{{entity-output-end}}

==== npc_template_maker ====
{{entity-kvalue-start|[[npc_template_maker]]}} 
{{entity-kvalue|Start disabled|Yes|}} 
{{entity-kvalue|Num of NPCs|1|}} 
{{entity-kvalue|Frequency|1|}} 
{{entity-kvalue|Max live NPCs|1|}} 
{{entity-kvalue|Name of template NPC|rappel1|}} 
{{entity-kvalue-end}} 

{{entity-output-start}}
{{entity-output||OnSpawnNPC|rappel1|BeginRappel||0.25||}}
{{entity-output-end}}

==== npc_metropolice ====
{{entity-kvalue-start|[[npc_metropolice]]}} 
{{entity-kvalue|Waiting to Rappel|Yes|}} 
{{entity-kvalue|Weapons|SMG|}} 
{{entity-kvalue|Number of manhacks|None|}} 
{{entity-kvalue|Pistols start drawn|Yes|}} 
{{entity-kvalue-end}} 

{{entity-flag-start}}
{{entity-flag|Clients|on|}}
{{entity-flag|Simple cops|on|}}
{{entity-flag|Fall to ground|on|}}
{{entity-flag|Template NPC|on|}}
{{entity-flag-end}}

{{entity-output-start}}
{{entity-output||OnRappelTouchdown|rappel1ss|StartSchedule||0.0||}}
{{entity-output-end}}

==== aiscripted_schedule ====
{{entity-kvalue-start|[[aiscripted_schedule]]}} 
{{entity-kvalue|Name|rappel1ss|}} 
{{entity-kvalue|AI state to set|Set state to COMBAT|}} 
{{entity-kvalue|Schedule to run|Set enemy to Goal Entity AND Run to Goal Entity|}} 
{{entity-kvalue|Interruptability|Damage or Death|}} 
{{entity-kvalue|Goal entity|!player|}} 
{{entity-kvalue-end}} 

=== Setup in hammer ===

In thë image below you can see the [[npc_metropolice]] waiting to rappel, and the [[trigger_once]] that will begin the rappel.
<gallery>
image:wiseNPCrappel02.jpg|waiting to rappel
image:wiseNPCrappel03.jpg|Trigger for the event
</gallery>
I’ve placed [[info_node]] entities on the ground in random spots to give the NPC Police walking hints.

That’s all there is to it. Give them enough room to rappel and they can drop off ledges, from planes or out of holes in the ceiling.

== Wrap up ==
There’s a lot more you can do, hopefully this article have stimulated your imagination.
* [http://type3studios.com/downloads/tutorials/SdkNutsTutorials/wiseNPCrappel.zip The example used in this tutorial.] 
* If you need further help please use the [http://forums.steampowered.com/forums/forumdisplay.php?f=193 forum for Source level Design]

<h2> Credits </h2>
*The tutorial was originally created by [[User:Mark WiseCarver|wisemx]], and ported from sdknuts.net/wiseNPCrappel to the VDC by [[User:Plykkegaard|Peter [AGHL]]] 15:22, 17 Feb 2008 (PST)
* Sample maps hosted by [http://type3studios.com http://type3studios.com]

[[Category:Level Design Tutorials]]