UEdGraphNode* FEdGraphSchemaAction_K2AddCallOnVariable::PerformAction(class UEdGraph* ParentGraph, UEdGraphPin* FromPin, const FVector2D Location, bool bSelectNewNode/* = true*/)
{
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
// Snap the node placement location to the grid, ensures calculations later match up better
FVector2D LocalLocation;
LocalLocation.X = FMath::GridSnap( Location.X, SNAP_GRID );
LocalLocation.Y = FMath::GridSnap( Location.Y, SNAP_GRID );
// First use the base functionality to spawn the 'call function' node
FVector2D TempLocation = LocalLocation;
UEdGraphNode* CallNode = FEdGraphSchemaAction_K2NewNode::PerformAction(ParentGraph, FromPin, TempLocation, bSelectNewNode);
// this is the guesstimate of the function node's height, snapped to grid units
const float FunctionNodeHeight = FMath::GridSnap( TempLocation.Y - LocalLocation.Y, SNAP_GRID );
// this is roughly the middle of the function node height
const float FunctionNodeMidY = LocalLocation.Y + FunctionNodeHeight * 0.5f;
// this is the offset up from the mid point at which we start placing nodes
const float StartYOffset = -NodeLiteralHeight * 0.5f;
// The Y location we start placing nodes from
const float ReferencedNodesPlacementYLocation = FunctionNodeMidY + StartYOffset;
// Now we need to create the variable literal to wire up
if(VariableName != NAME_None)
{
UK2Node_VariableGet* GetVarNode = NewObject<UK2Node_VariableGet>(ParentGraph);
ParentGraph->AddNode(GetVarNode, false, bSelectNewNode);
GetVarNode->SetFlags(RF_Transactional);
GetVarNode->VariableReference.SetSelfMember(VariableName);
GetVarNode->AllocateDefaultPins();
GetVarNode->NodePosX = LocalLocation.X - FunctionNodeLiteralReferencesXOffset;
GetVarNode->NodePosY = ReferencedNodesPlacementYLocation;
GetVarNode->SnapToGrid(SNAP_GRID);
// Connect the literal out to the self of the call
UEdGraphPin* LiteralOutput = GetVarNode->GetValuePin();
UEdGraphPin* CallSelfInput = CallNode->FindPin(K2Schema->PN_Self);
if(LiteralOutput != NULL && CallSelfInput != NULL)
{
LiteralOutput->MakeLinkTo(CallSelfInput);
}
}
return CallNode;
}
