09 Updating The Score And Ui In The Game Loop

# Source URL: https://dev.epicgames.com/documentation/en-us/fortnite/pizza-pursuit-4-managing-and-displaying-the-score-for-time-trial-in-verse
# Local doc:  epic-docs/documentation/en-us/fortnite/pizza-pursuit-4-managing-and-displaying-the-score-for-time-trial-in-verse.md
# Section:    Updating the Score and UI in the Game Loop
PickupDeliveryLoop<private>()<suspends> : void =
PickupZonesTags : []pickup_zone_tag = array{pickup_zone_level_1_tag{}, pickup_zone_level_2_tag{}, pickup_zone_level_3_tag{}}
MaxPickupLevel := PickupZonesTags.Length - 1
FirstPickupZoneCompletedEvent := event(){}
loop:
var PickupLevel : int = 0
var IsFirstPickup : logic = true
# Every time the loop restarts, we should reset the pickup level UI through the ScoreManager.
# The pickup level in the UI starts at 1 (not 0). Some players will be confused if it starts at 0.
# We index from 0, so PickupLevel=0 is Level 1 in the UI.
ScoreManager.UpdatePickupLevel(PickupLevel + 1)
race:
loop:
if (PickupZone:base_zone = PickupZones[PickupLevel].SelectNext[]):
PickupZone.ActivateZone()
# This is the only defer we need for any PickupZone we activate. It will either deactivate the first PickupZone at the end of each outer loop,                        or it'll deactivate any later PickupZone. That's because the expression is evaluated at the end, when the PickupZone variable has been bound to a newer zone.
defer:
PickupZone.DeactivateZone()
PickupZone.ZoneCompletedEvent.Await()
Logger.Print("Picked up", ?Level:=log_level.Normal)
# After the first pickup we can enable the delivery zone.
if (IsFirstPickup?):
set IsFirstPickup = false
FirstPickupZoneCompletedEvent.Signal()
if (PickupPoints := PointsForPickupLevel[PickupLevel]):
ScoreManager.UpdatePendingScore(PickupPoints)
# Update the pickup level and ScoreManager.