Finish one delivery without counting it twice

Add a destination and a count

Continue from lesson four, or start with checkpoint 04. After the parcel-state declarations and before the @onready variables, add the following two lines.

GOAL is the destination center. deliveries begins at zero. The goal uses the same 38-pixel interaction radius so the rule stays easy to explain.

const GOAL := Vector2(800, 470)
var deliveries := 0

Replace try_interact with a complete transition rule

Replace the existing try_interact function with this complete version. The waiting branch still guards pickup. The new carried branch checks the destination distance before moving to DELIVERED and incrementing the count.

A delivered parcel matches neither branch. Pressing Space again therefore cannot increment deliveries a second time. The status message states success in words as well as changing the parcel’s appearance.

func try_interact() -> void:
	if parcel_state == ParcelState.WAITING:
		if player.position.distance_to(PARCEL_START) > INTERACT_RADIUS:
			status.text = "Move beside parcel [P] before pressing Space."
			return
		parcel_state = ParcelState.CARRIED
		status.text = "Carrying parcel. Find DROP and press Space nearby."
	elif parcel_state == ParcelState.CARRIED:
		if player.position.distance_to(GOAL) > INTERACT_RADIUS:
			status.text = "Still carrying the parcel. Move beside DROP, then press Space."
			return
		parcel_state = ParcelState.DELIVERED
		deliveries += 1
		status.text = "Delivered! 1 / 1. Restart arrives in lesson 6."
	queue_redraw()

Draw and explain the destination

Inside _draw(), add the following lines after the wall loop and before the parcel-drawing block. The outlined square and DROP text identify the destination.

Replace the status.text assignment in _ready() with: status.text = "Find parcel [P], press Space nearby, then carry it to DROP and press Space." Keep _add_walls() in place.

1. Run a fresh game and walk to DROP without the parcel. Press Space; it should not complete a delivery.
2. Collect the parcel and press Space far from DROP. It should remain carried.
3. Carry it beside DROP and press Space. The parcel should disappear and the status should say Delivered! 1 / 1.
4. Press Space repeatedly near DROP. The count should stay at one. Stop and run again for another attempt; restart is the next lesson.

	draw_rect(Rect2(GOAL - Vector2(34, 34), Vector2(68, 68)), Color("417664"), false, 3.0)
	draw_string(font, GOAL + Vector2(-25, 6), "DROP", HORIZONTAL_ALIGNMENT_LEFT, -1, 17, Color("214b48"))