UnrealScript Game Programming Cookbook

Chapter 4

93

How to do it...

1. In the defaultproperties block at the bottom of your class, add the
   following code:
   // How many rounds will be added to our weapon type
   AmmoAmount=10
   // The type of weapon that this pickup will supply ammo
   for
   TargetWeapon=class'UTWeap_ShockRifle'

This simply declares the amount of ammo that will be added to the pawn's

inventory, as well as for which weapon class when it is picked up.

2. Moving on, add the following code for the sound the pickup will make when
   it is acquired, respawn time, and the desirability for a bot to pick it up:
   // The sound effect triggered when the pickup is acquired
   PickupSound=SoundCue'A_Pickups.Ammo.Cue.
   A_Pickup_Ammo_Rocket_Cue'

/** The value at which an AI bot desires the pickup. Higher

value = will lean towards this pickup */

MaxDesireability=0.3

// Time (seconds) before the pickup respawns

RespawnTime=10.0

Desirability is a bot's attraction to a particular object in UDK. It can be

anything from ammo or health, to a specific weapon. Bots can also be

programmed to have a preferred weapon, and seek ammunition for that

above all else. The higher the desirability, the more likely a pawn is to

ignore other objects (and often pawns) to go after it.

This is especially effective when changing an AI's routine during a

particular gameplay type. In capture, if the flag matches, you can often

tell your AI companions to either defend your flag, attack the enemy flag,

or roam about and seek enemies.

We really could use any sound here, so for the sake of variety let's use the rocket

launcher's pickup sound.