Ultimate Game Design : Building game worlds

those warriors, who initially greeted you, to seek to your position on the map in a killing
mood. The crowd trigger changes the warriors from a greeting state to a searchfor-player
attack state.
You can also use a crowd trigger less aggressively. A player might break a crowd
trigger that causes warriors seated in a circle at their drums to start playing them. In
this case, the crowd trigger simply tells the warrior actors to change from their
seated-at-drum animation state to their playing-the-drums animation state. The
crowd trigger also triggers an audio trigger (the warrior’s drum sounds).
Many triggers “cascade” like this. A crowd trigger triggers an animation and audio
trigger, which might trigger a particle event (for example, the fire starts to grow as the
warrior drummers play their drum music).
Here’s a sample script for controlling a given number of warriors, making them aware
that the player has taken a sacred object from their village, and making them seek out the
player in a killing mood:
Weather Effects
// JavaScript sample of "crowd" trigger support
if(player.pickedUp(sacredObject)) {
for(var n=0;n