extends Upgrade
class_name FuelEfficiencyUpgrade

@export var modifier := 0.95

func _init(tier: int = 1):
	if tier < 5:
		unlocks.append(FuelEfficiencyUpgrade.new(tier + 1))
	self.tier = tier
	name = "Fuel Efficiency Increase - Tier %s" % ['I','II','III','IV','V'][tier - 1]
	description = "Increases the efficiency of fuel use for your rocket"
	cost = {
		"fuel": (tier) * 15 - 5,
		"star": (tier) * 5 + 5
	}

func activate_upgrade() -> bool:
	if not super(): return false
	DataHandler.game_data.fuel_efficiency *= modifier
	return true