Fix research

core/research/research_xp_tracker.gd

@@ -0,0 +1,48 @@
+class_name ResearchXPTracker
+extends Node
+
+@export var game_state: LevelGameState
+
+signal research_xp_changed(research_id: StringName, new_xp: BigNumber)
+signal research_level_up(research_id: StringName, old_level: int, new_level: int)
+
+func add_xp_with_buffs(research_id: StringName, base_xp: BigNumber) -> BigNumber:
+	if game_state == null:
+		return BigNumber.new(0.0, 0)
+	
+	var buff_multiplier: float = game_state.get_research_xp_multiplier(research_id)
+	var multiplier_bn: BigNumber = BigNumber.from_float(buff_multiplier)
+	var actual_xp: BigNumber = base_xp.multiply(multiplier_bn)
+	
+	game_state.add_research_xp(research_id, actual_xp)
+	
+	return actual_xp
+
+func _on_generator_produced(generator_id: StringName, _amount: Variant) -> void:
+	var research: ResearchData = _get_research_for_generator(generator_id)
+	if research == null:
+		return
+	
+	var research_catalogue: ResearchCatalogue = game_state.research_catalogue
+	if research_catalogue == null:
+		return
+	
+	research = research_catalogue.get_research_by_generator_id(generator_id)
+	if research == null:
+		return
+	
+	var amount_big: BigNumber = _amount
+	var amount_float: float = amount_big.mantissa * pow(10.0, float(amount_big.exponent))
+	if amount_float <= 0.0:
+		return
+	
+	var base_xp: BigNumber = BigNumber.from_float(research.xp_per_currency_produced * amount_float)
+	if base_xp.mantissa <= 0.0:
+		return
+	
+	add_xp_with_buffs(research.id, base_xp)
+
+func _get_research_for_generator(generator_id: StringName) -> ResearchData:
+	if game_state == null or game_state.research_catalogue == null:
+		return null
+	return game_state.research_catalogue.get_research_by_generator_id(generator_id)