Ignore breakables when determining mantelability

mp/src/game/shared/sdk/sdk_gamemovement.cpp

@@ -2502,6 +2502,17 @@ inline void CSDKGameMovement::TraceBBox(const Vector& start, const Vector& end,
 	TraceBBox(start, end, mins, maxs, pm, PlayerSolidMask(), pExtraShouldHitCheckFn);
 }
 
+static bool ShouldHitFuncIgnoreBreakables(IHandleEntity *pHandleEntity, int contentsMask) {
+	CBaseEntity *pEntity = EntityFromEntityHandle(pHandleEntity);
+	if (!pEntity)
+		return true;
+
+	if (pEntity->GetHealth() == 0)
+		return true;
+
+	return false;
+}
+
 bool CSDKGameMovement::CheckMantel()
 {
 	trace_t tr;
@@ -2537,15 +2548,15 @@ bool CSDKGameMovement::CheckMantel()
 	/*Then probe forward for free space*/
 	pr1 = pr2;
 	pr2 = pr1 + dir*4;
-	TraceBBox (pr1, pr2, vecMins, vecMaxs, tr);
+	TraceBBox (pr1, pr2, vecMins, vecMaxs, tr, &ShouldHitFuncIgnoreBreakables);
 	if (tr.fraction < 1)
 		/*Not enough space to stand on for potential ledge, or too far down wall*/
 		return false;
 
 	/*Find ground to stand on*/
 	pr1 = pr2;
 	pr2[2] -= da_acro_mantel_height.GetFloat ();
-	TraceBBox (pr1, pr2, vecMins, vecMaxs, tr);
+	TraceBBox (pr1, pr2, vecMins, vecMaxs, tr, &ShouldHitFuncIgnoreBreakables);
 	if (tr.fraction == 1)
 		return false;
 
@@ -2558,15 +2569,15 @@ bool CSDKGameMovement::CheckMantel()
 	/*Then check whether we have enough vertical space to stand on the ledge*/
 	pr1 = pr2 = tr.endpos;
 	pr2.z += 4;
-	TraceBBox(pr1, pr2, VEC_HULL_MIN, VEC_HULL_MAX, tr);
+	TraceBBox(pr1, pr2, VEC_HULL_MIN, VEC_HULL_MAX, tr, &ShouldHitFuncIgnoreBreakables);
 
 	if (tr.fraction < 1 || tr.allsolid || tr.startsolid)
 		/*Blocked by ceiling*/
 		return false;
 
 	pr1 = mv->GetAbsOrigin();
 	pr2 = pr1 + dir*4;
-	TraceBBox (pr1, pr2, vecMins, vecMaxs, tr);
+	TraceBBox (pr1, pr2, vecMins, vecMaxs, tr, &ShouldHitFuncIgnoreBreakables);
 
 	// Only mantel with steep planes.
 	if (tr.plane.normal.z > 0.3)