Core/Movement: Refactor jump speed calculation out of spell code

Port From (https://github.com/TrinityCore/TrinityCore/commit/705d5701bf17f1787d2646c55c994b0404659991)
2023-03-13 03:29:40 -04:00
parent cd42942a7c
commit 351e05104d
2 changed files with 23 additions and 16 deletions
@@ -1036,6 +1036,28 @@ namespace Game.Movement
            Add(movement);
        }

+        public void CalculateJumpSpeeds(float dist, UnitMoveType moveType, float speedMultiplier, float minHeight, float maxHeight, out float speedXY, out float speedZ)
+        {
+            float baseSpeed = _owner.IsControlledByPlayer() ? SharedConst.playerBaseMoveSpeed[(int)moveType] : SharedConst.baseMoveSpeed[(int)moveType];
+            Creature creature = _owner.ToCreature();
+            if (creature != null)
+                baseSpeed *= creature.GetCreatureTemplate().SpeedRun;
+
+            speedXY = Math.Min(baseSpeed * 3.0f * speedMultiplier, Math.Max(28.0f, _owner.GetSpeed(moveType) * 4.0f));
+
+            float duration = dist / speedXY;
+            float durationSqr = duration * duration;
+            float height;
+            if (durationSqr < minHeight * 8 / gravity)
+                height = minHeight;
+            else if (durationSqr > maxHeight * 8 / gravity)
+                height = maxHeight;
+            else
+                height = (float)(gravity * durationSqr / 8);
+
+            speedZ = (float)Math.Sqrt(2 * gravity * height);
+        }
+        
        void ResolveDelayedActions()
        {
            while (_delayedActions.Count != 0)