Good evening from Finland! I loved the BuildingEscape course and I wanted to share my version of the DoorOpen code. I implemented your teachings to my own project, that I’ve been working on for a some time.
Feel free to use my code as you want.
In my version there is a trigger volume around the door. Being inside the trigger volume and pressing R opens the door. If the door is already open, it will be closed. The door opening angle and speed are set in a timeline, just like in the course.
Here’s the code and a blueprint from one of my doors.
OpenDoor.h
Copyright Ville Happo 2016
#pragma once
#include "Components/ActorComponent.h"
#include "OpenDoor.generated.h"
///needed for creating blueprint events
DECLARE_DYNAMIC_MULTICAST_DELEGATE(FDoorEvent);
UCLASS( ClassGroup=(Custom), meta=(BlueprintSpawnableComponent) )
class BUILDINGESCAPE_API UOpenDoor : public UActorComponent
{
GENERATED_BODY()
public:
// Sets default values for this component's properties
UOpenDoor();
// Called when the game starts
virtual void BeginPlay() override;
// Called every frame
virtual void TickComponent( float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction ) override;
// door opening event for blueprint
UPROPERTY(BlueprintAssignable)
FDoorEvent OnOpen;
// door closing event for blueprint
UPROPERTY(BlueprintAssignable)
FDoorEvent OnClose;
//Tiggervolume chosen for the door
UPROPERTY(EditAnywhere)
ATriggerVolume* TriggerDoor = nullptr;
//Assigned to default pawn at beginplay (doesn't exist before runtime)
AActor* ActorThatOpens = nullptr;
UInputComponent* InputComponent = nullptr;
private:
// Send broadcast to blueprint if player is in the door trigger and is pressing "R"
void IsPlayerInterracting();
//Boolean for checking if door should be opened or closed
bool doorIsOpen = false;
//Setting up Interraction key "R" to control doors
void SetupInputComponent();
};
OpenDoor.cpp
// Copyright Ville Happo 2016
#include "BuildingEscape.h"
#include "OpenDoor.h"
UOpenDoor::UOpenDoor()
{
PrimaryComponentTick.bCanEverTick = true;
}
// Called when the game starts
void UOpenDoor::BeginPlay()
{
Super::BeginPlay();
ActorThatOpens = GetWorld()->GetFirstPlayerController()->GetPawn();
SetupInputComponent();
/// Check if the door has a trigger assigned
if (!TriggerDoor)
{
UE_LOG(LogTemp, Error, TEXT("%s Missing trigger volume"), *GetOwner()->GetName());
}
}
void UOpenDoor::SetupInputComponent()
{
InputComponent = ActorThatOpens->FindComponentByClass<UInputComponent>();
if (InputComponent)
{
InputComponent->BindAction("Interract", IE_Pressed, this, &UOpenDoor::IsPlayerInterracting);
}
}
// Called every frame
void UOpenDoor::TickComponent( float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction )
{
Super::TickComponent( DeltaTime, TickType, ThisTickFunction );
}
/// If player is overlapping the TriggerDoor --> See if door should be opened or closed based on "bool doorIsOpen"
void UOpenDoor::IsPlayerInterracting()
{
/// Return if the trigger is lost for some reason
if (!TriggerDoor) {
return;
}
/// Check if Actor that can open the door is assigned
if(!ActorThatOpens){
return;
}
if (TriggerDoor->IsOverlappingActor(ActorThatOpens)) {
if (!doorIsOpen)
{
OnOpen.Broadcast();
doorIsOpen = true;
}
else
{
OnClose.Broadcast();
doorIsOpen = false;
}
}
}
Door blueprint using events, that are created in the code
I tried to upload a demo video, but sadly I can’t, since I’m a noob at this forum 
Visit my blog @ www.villevanille.com if you want to see my progress, as I educate myself in game development & 3D modeling. I’d love some feedback 