From 537b5510f0887d1fd8327657c34e67121c579d38 Mon Sep 17 00:00:00 2001
From: Qwigs <qwiggalo@gmail.com>
Date: Wed, 3 Jun 2026 13:49:14 -0700
Subject: [PATCH] Add Blueprint-accessible GetAbilityCostValues to UGMCAbility

Added a helper function to easily retrieve and map the attribute costs associated with an ability.

Functionality: Iterates through the AbilityCost effect CDO to extract the modifiers.

Returns: A TMap<FGameplayTag, float> that maps attribute tags directly to their exact modifier values.

Use Case: Simplifies querying and accessing ability costs for UI display and Blueprint logic.
---
 .../GMCAbilitySystem/Private/Ability/GMCAbility.cpp | 13 +++++++++++++
 Source/GMCAbilitySystem/Public/Ability/GMCAbility.h |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/Source/GMCAbilitySystem/Private/Ability/GMCAbility.cpp b/Source/GMCAbilitySystem/Private/Ability/GMCAbility.cpp
index f405935..41144ec 100644
--- a/Source/GMCAbilitySystem/Private/Ability/GMCAbility.cpp
+++ b/Source/GMCAbilitySystem/Private/Ability/GMCAbility.cpp
@@ -144,6 +144,19 @@ void UGMCAbility::RemoveAbilityCost() {
 	}
 }
 
+TMap<FGameplayTag, float> UGMCAbility::GetAbilityCostValues() const
+{
+	TMap<FGameplayTag, float> CostMap;
+	if (!AbilityCost) return CostMap;
+
+	const UGMCAbilityEffect* EffectCDO = AbilityCost->GetDefaultObject<UGMCAbilityEffect>();
+    
+	for (const FGMCAttributeModifier& Modifier : EffectCDO->EffectData.Modifiers)
+	{
+		CostMap.Add(Modifier.AttributeTag, Modifier.GetValue()); 
+	}
+	return CostMap;
+}
 
 void UGMCAbility::ModifyBlockOtherAbility(FGameplayTagContainer TagToAdd, FGameplayTagContainer TagToRemove) {
 	for (auto Tag : TagToAdd) {
diff --git a/Source/GMCAbilitySystem/Public/Ability/GMCAbility.h b/Source/GMCAbilitySystem/Public/Ability/GMCAbility.h
index e7a1675..8174dab 100644
--- a/Source/GMCAbilitySystem/Public/Ability/GMCAbility.h
+++ b/Source/GMCAbilitySystem/Public/Ability/GMCAbility.h
@@ -164,6 +164,11 @@ class GMCABILITYSYSTEM_API UGMCAbility : public UObject, public IGameplayTaskOwn
 	// Remove the ability cost effect (if applicable)
 	UFUNCTION(BlueprintCallable, Category = "GMCAbilitySystem")
 	virtual void RemoveAbilityCost();
+	
+	// Retrieves the attribute costs of this ability from its AbilityCost effect class.
+	// @return A map of GameplayTags (Attributes) to their respective modifier values.
+	UFUNCTION(BlueprintPure, Category = "GMCAbilitySystem")
+	TMap<FGameplayTag, float> GetAbilityCostValues() const;
 
 	// Live modifying the BlockOtherAbility tags
 	UFUNCTION(BlueprintCallable, Category = "GMCAbilitySystem")