Returns if the AchievementUI can be displayed.
canShow = CanShowAchievementUI()
- boolean -
trueif the achievement data is available (and hence the AchievementUI can be displayed),
- This function returns
falseif called while the player is logging in (but not on subsequent UI reloads).
- Achievement completion data is streamed to the client when the character logs in.
- The streaming process is indicated by RECEIVED_ACHIEVEMENT_LIST events and generally completes before PLAYER_LOGIN.