77 lines
2.2 KiB
GDScript
77 lines
2.2 KiB
GDScript
extends Node
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# This script is added as an Autoload named 'GameState'
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# ==========================================
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# SIGNALS
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# ==========================================
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signal gold_changed(new_amount: BigNumber)
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signal gems_changed(new_amount: BigNumber)
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enum CurrencyType { gold, gems }
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# ==========================================
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# STATE VARIABLES
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# ==========================================
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var gold: BigNumber = BigNumber.from_float(0.0)
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var gems: BigNumber = BigNumber.from_float(0.0)
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var last_save_time: int = 0 # Unix timestamp
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static var file_name: String = "user://idle_save.json"
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func _ready() -> void:
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load_game()
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# ==========================================
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# STATE MODIFIERS
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# ==========================================
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func add_gold(amount: BigNumber) -> void:
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gold.add_in_place(amount)
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gold_changed.emit(gold)
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func spend_gold(cost: BigNumber) -> bool:
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if gold.is_greater_than(cost) or gold.is_equal_to(cost):
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var negative_cost = BigNumber.new(-cost.mantissa, cost.exponent)
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gold.add_in_place(negative_cost)
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gold_changed.emit(gold)
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return true
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return false
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func add_gems(amount: BigNumber) -> void:
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gems.add_in_place(amount)
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gems_changed.emit(gems)
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func spend_gems(cost: BigNumber) -> bool:
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if gems.is_greater_than(cost) or gems.is_equal_to(cost):
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var negative_cost = BigNumber.new(-cost.mantissa, cost.exponent)
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gems.add_in_place(negative_cost)
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gems_changed.emit(gems)
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return true
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return false
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# ==========================================
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# PERSISTENCE (Save/Load)
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# ==========================================
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func save_game() -> void:
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var save_data = {
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"gold": gold.serialize(),
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"gems": gems.serialize(),
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"last_save_time": Time.get_unix_time_from_system()
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}
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var file = FileAccess.open(file_name, FileAccess.WRITE)
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if file:
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file.store_string(JSON.stringify(save_data))
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func load_game() -> void:
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if not FileAccess.file_exists(file_name):
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return
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var file = FileAccess.open(file_name, FileAccess.READ)
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if file:
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var parsed = JSON.parse_string(file.get_as_text())
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if parsed is Dictionary:
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gold = BigNumber.deserialize(parsed.get("gold", {}))
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gems = BigNumber.deserialize(parsed.get("gems", {}))
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last_save_time = parsed.get("last_save_time", Time.get_unix_time_from_system())
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