Adding Animations - Creating E-Learning Games with Unity - page 217

19. In SetupMission2 present in the Start() method towards the end, add
a line of code to pass the ID of the question, which this NPC will give the
player, into the QuizNpcHelper . This way, when it's time to tell the NPC to
change its animation, the pop-up card can find its NPC by searching for the
one with the correct ID:
QuizNpcInstance.GetComponent<QuizNpcHelper>().SetQuizNpcId(k);
20. Inside InteractiveObject , we add a simple billboarding behavior to
the script so that QuizNpc can always face the player. If the billboard check-
box is enabled, we use the Transform.lookat() built-in method to make
sure the NPC's transform always faces the player. We also fix up the local
angles to makes sure the NPC doesn't look up or down if the NPC itself is
really close to the player:
if (billboard == true)
{
GameObject player =
GameObject.Find("Player1");
if (player != null)
{
this.transform.lookat(player.transform.position);
this.transform.localEulerAngles =
new Vector3(0.0f,
this.transform.localEulerAngles.y, 0.0f);
}
}
Congratulations! QuizNpc now animates nicely and celebrates when the player re-
sponds correctly.