AnimNode_NameOfYourNode.cpp

// Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.

#include "Sandbox.h"
#include "AnimNode_NameOfYourNode.h"

//#include "AnimationRuntime.h"

FAnimNode_NameOfYourNode::FAnimNode_NameOfYourNode()
    : FAnimNode_Base()
    , SampleFloat(128.333)
{
    WorldIsGame = false;
}

void FAnimNode_NameOfYourNode::Initialize(const FAnimationInitializeContext & Context)
{
    //Init the Inputs
    BasePose.Initialize(Context);
    OtherPose.Initialize(Context);

    //Get the Actor Owner
    OwningActor = Context.AnimInstance-> GetSkelMeshComponent()->GetOwner();

    //Editor or Game?
    UWorld * TheWorld = Context.AnimInstance->GetWorld();
    if (!TheWorld) return;
    //~~~~~~~~~~~~~~~~

    WorldIsGame = (TheWorld->WorldType == EWorldType::Game);
}

void FAnimNode_NameOfYourNode::Update(const FAnimationUpdateContext & Context)
{
    //EDITOR
    //Editor mode? just use the base pose
    if (!WorldIsGame)
    {
        //if your node depends on
                //actual actor instance, can't do anything in editor
    }

    //GAME
    //Actually in Game so the Owner Instance Should Exist
    else
    {
        //Try Again if not found
        if (!OwningActor) OwningActor =
                    Context.AnimInstance->GetSkelMeshComponent()->GetOwner();

        //Not found
        if (!OwningActor)
        {
            UE_LOG(LogAnimation, Warning,
           TEXT("FAnimNode_NameOfYourNode::Update() Owning Actor was not found"));
            return;
            //~~~~~~~~~~~~~~~~~~~
        }

        //Do Stuff Based On Actor Owner
    }
    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    //~~~ Do Updates ~~~

    //Try To Update As Few of the Inputs As You Can

    //************************************************
    // FPoseLinkBase::Update Active Pose - this is what makes
        //the glowing line thing happen and animations loop
    //***********************************************
    BasePose.Update(Context);


    //***********************
    // Evaluate Graph, see AnimNode_Base, AnimNodeBase.h
    EvaluateGraphExposedInputs.Execute(Context);
    //***************************************
}

void FAnimNode_NameOfYourNode::Evaluate(FPoseContext & Output)
{
    //~~~ Return Base Pose, Un Modified ~~~
    BasePose.Evaluate(Output);

    //Evaluate is returning the Output to this function,
    //which is returning the Output to the rest of the Anim Graph

    //In this case, we are passing the Output out variable into the BasePose

    //Basically saying, give us back the unmodified Base Pose

    //i.e, the bulk of your anim tree.
}