extends BasicRoom
class_name FuelTank

@onready var elevatorButtonTop: ButtonLogicImpulse = $ButtonBase/ButtonLogicImpulse
@onready var elevatorButtonBottom: ButtonLogicImpulse = $ButtonBase_001/ButtonLogicImpulse01

@onready var elevator: MeshInstance3D = $ElevatorPlattform # y Pos 6.7 is top; -0.2 is Bottom

var fuel: float = 100.0
var fuelDrainRate: float = 0.3
var canisterFillRate: float = 8.3
@onready var fuelMesh: MeshInstance3D = $Fuel

@onready var fuelInputArea = $FuelInput/FuelInputArea
var fuelCannistersInArea: Array[GrabBox]

var elevatorDestination: bool = true #True is Up, False is Down
var elevatorSpeed: float = 2 #Units/seccond

func _ready() -> void:
	elevatorButtonTop.onPressed.connect(elevatorButtonPressed)
	elevatorButtonBottom.onPressed.connect(elevatorButtonPressed)

func _process(delta: float) -> void:
	if elevatorDestination:
		elevator.position.y = clamp(elevator.position.y + elevatorSpeed*delta,-0.2,6.7)
	else:
		elevator.position.y = clamp(elevator.position.y - elevatorSpeed*delta,-0.2,6.7)
	
	
	fuelCannistersInArea = getFuelCanisters(fuelInputArea)
	fuel = clamp(fuel - fuelDrainRate*delta,0,100)
	fuel = clamp(fuel + canisterFillRate*fuelCannistersInArea.size()*delta,0,100)
	
	fuelMesh.scale.y = fuel/100
	if SpaceshipLogicRef:
		SpaceshipLogicRef.shipFuel = fuel


func elevatorButtonPressed():
	elevatorDestination = !elevatorDestination

func getFuelCanisters(Area: Area3D) -> Array[GrabBox]:
	var overlappingAreas: Array[Area3D] = Area.get_overlapping_areas()
	var returnArray: Array[GrabBox]
	for a in overlappingAreas:
		if typeof(a == GrabBox):
			if a.type == "FuelCanister":
				returnArray.push_back(a)
	return returnArray