Core/Spells: Prevent spell power costs from changing their sign (positive cost cannot become negative)

Port From (https://github.com/TrinityCore/TrinityCore/commit/01a3be276f4076762290e985d10d5c4ab1176ce0)
2021-02-22 16:07:10 -05:00
parent f25af46c8f
commit d1c0aa114a
1 changed files with 5 additions and 0 deletions
@@ -2714,6 +2714,7 @@ namespace Game.Spells

                // Base powerCost
                int powerCost = power.ManaCost;
+                bool initiallyNegative = powerCost < 0;
                // PCT cost from total amount
                if (power.PowerCostPct != 0)
                {
@@ -2847,6 +2848,10 @@ namespace Game.Spells
                    continue;
                }

+                // power cost cannot become negative if initially positive
+                if (initiallyNegative != (powerCost < 0))
+                    powerCost = 0;
+
                bool found = false;
                for (var i = 0; i < costs.Count; ++i)
                {