Add more abilities in the sample

Source/CogSample/CogSampleModifierCalculation_Cooldown.cpp

@@ -0,0 +1,29 @@
+#include "CogSampleModifierCalculation_Cooldown.h"
+
+#include "CogSampleGameplayAbility.h"
+#include "CogSampleAttributeSet_Caster.h"
+
+//--------------------------------------------------------------------------------------------------------------------------
+UCogSampleModifierCalculation_Cooldown::UCogSampleModifierCalculation_Cooldown()
+{
+    CooldownReductionDef.AttributeToCapture = UCogSampleAttributeSet_Caster::GetCooldownReductionAttribute();
+    CooldownReductionDef.AttributeSource = EGameplayEffectAttributeCaptureSource::Source;
+    CooldownReductionDef.bSnapshot = false;
+
+    RelevantAttributesToCapture.Add(CooldownReductionDef);
+}
+
+//--------------------------------------------------------------------------------------------------------------------------
+float UCogSampleModifierCalculation_Cooldown::CalculateBaseMagnitude_Implementation(const FGameplayEffectSpec& Spec) const
+{
+    FAggregatorEvaluateParameters EvaluationParameters;
+    float CooldownReduction = 0.0f;
+    GetCapturedAttributeMagnitude(CooldownReductionDef, Spec, EvaluationParameters, CooldownReduction);
+
+    const UCogSampleGameplayAbility* Ability = Cast<UCogSampleGameplayAbility>(Spec.GetContext().GetAbilityInstance_NotReplicated());
+
+    const float UnmitigatedCooldown = (Ability != nullptr) ? Ability->GetUnmitigatedCooldownDuration() : 0.0f;
+    const float MitigatedCooldown = UnmitigatedCooldown * FMath::Max(0.0f, 1.0f - CooldownReduction);
+
+    return MitigatedCooldown;
+}