7. web에 올라갈 간단한 게임을 만들자.-Coin편

준비물 : UE4 엔진.

1. 간단한 게임 기획

너무 많은 기능을 넣고 싶지 않기에 간단하게 미로 푸는 게임으로 합니다.

- 맵

이정도로 퉁치고

- 목표

저 동그란 걸 모으는 거에요 하와와.

- 캐릭터

간단한게 최고에요. 바꿀 수도 있는데 굳이 지금은 할 필요가 없죠

2. 기능 정의

ㄱ. ui

- 먹은 코인 수 출력

- Retry 횟수 출력

- GameOver 로고 출력

- Game logo Scene 만들기

- Game ending Scene 만들기

ㄴ. 내부기능

- 코인에 닿으면 먹는 기능

- 닿은 후 코인 오브젝트 삭제 기능

- GameManager 기능

- 게임의 시작, 중지, 끝을 관리

- 현재 플레이어가 모은 코인을 관리 (예 최대 코인 수 12/0 현재 먹은 코인수)

- Scene관리

개발 순서는~~~ ui 하고 내부 기능 하고~ 해야하는 거지만 난 내맘데로 만들꺼야!

3.내부 기능을 만들자

- 코인에 닿으면 먹는 기능을 만들자!

먼저 코인의 뼈와 기둥이 되어줄 C++ 코드를 작성합니다.

먼저 코인!

//ACoin.h // Fill out your copyright notice in the Description page of Project Settings. #pragma once #include "CoreMinimal.h" #include "GameFramework/Actor.h" #include "Coin.generated.h" UCLASS() class HOWTOMAKEHTML5_API ACoin : public AActor { GENERATED_BODY() private: //Sets Componetns UPROPERTY(VisibleAnywhere, Category = "Config") class UBoxComponent * pBoxCollision; UPROPERTY(VisibleAnywhere, Category = "Config") class UStaticMeshComponent * pStaticMesh; public: // Sets default values for this actor's properties ACoin(); protected: // Called when the game starts or when spawned virtual void BeginPlay() override; public: UFUNCTION() void OnOverlapBegin(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult & SweepResult); };

//ACoin.cpp // Fill out your copyright notice in the Description page of Project Settings. #include "Coin.h" #include "Runtime/Engine/Classes/Components/BoxComponent.h" #include "Runtime/Engine/Classes/Components/StaticMeshComponent.h" #include "Kismet/GameplayStatics.h" #include "HowToMakeHTML5GameMode.h" #include <string> // Sets default values ACoin::ACoin() {   // Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it. PrimaryActorTick.bCanEverTick = false; pBoxCollision = CreateDefaultSubobject<UBoxComponent>(TEXT("Boxcollision")); pBoxCollision->SetGenerateOverlapEvents(true); pStaticMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("StaticMesh")); } // Called when the game starts or when spawned void ACoin::BeginPlay() { Super::BeginPlay(); UE_LOG(LogTemp, Warning, TEXT("ACoin::BeginPlay")); FScriptDelegate DelegateBegin; DelegateBegin.BindUFunction(this, "OnOverlapBegin"); this->OnActorBeginOverlap.Add(DelegateBegin); pBoxCollision->SetupAttachment(RootComponent); pStaticMesh->SetupAttachment(pBoxCollision); } void ACoin::OnOverlapBegin(AActor * OtherActor, UPrimitiveComponent * OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult & SweepResult) { UE_LOG(LogTemp, Warning, TEXT("ACoint::OnOverlapBegin")); //Processing Score AHowToMakeHTML5GameMode* temp=(AHowToMakeHTML5GameMode*)GetWorld()->GetAuthGameMode(); temp->addPlayerScore(); std::string str= std::to_string(temp->getPlayerScore()); TCHAR ch[20]; const char* all = str.c_str(); int len = 1 + strlen(all); wchar_t* t = new wchar_t[len]; if (NULL == t) throw std::bad_alloc(); mbstowcs(t, all, len); _tcscpy_s(ch,t); UE_LOG(LogTemp, Warning, ch); //Delete this object Destroy(this); }

그 다음에는 score를 관리해주고 게임을 관리해주는 GameMode 찡!

//AHowToMakeHTML5GameMode.h // Copyright 1998-2018 Epic Games, Inc. All Rights Reserved. #pragma once #include "CoreMinimal.h" #include "GameFramework/GameModeBase.h" #include "HowToMakeHTML5GameMode.generated.h" UCLASS(minimalapi) class AHowToMakeHTML5GameMode : public AGameModeBase { GENERATED_BODY() public: AHowToMakeHTML5GameMode(); private: int playerScore; public: void setPlayerScore(int param); int getPlayerScore(); void addPlayerScore(); };

//AHowToMakeHTML5GameMode.cpp // Copyright 1998-2018 Epic Games, Inc. All Rights Reserved. #include "HowToMakeHTML5GameMode.h" #include "HowToMakeHTML5Character.h" #include "UObject/ConstructorHelpers.h" AHowToMakeHTML5GameMode::AHowToMakeHTML5GameMode() { // set default pawn class to our Blueprinted character static ConstructorHelpers::FClassFinder<APawn> PlayerPawnBPClass(TEXT("/Game/ThirdPersonCPP/Blueprints/ThirdPersonCharacter")); if (PlayerPawnBPClass.Class != NULL) { DefaultPawnClass = PlayerPawnBPClass.Class; } } void AHowToMakeHTML5GameMode::setPlayerScore(int param) { if(param<0) { throw param; } playerScore = param; } int AHowToMakeHTML5GameMode::getPlayerScore() { return playerScore; } void AHowToMakeHTML5GameMode::addPlayerScore() { playerScore += 1; }

간단하게 Coin Actor는 뭔가와 부딪히면 그대로 현재 게임 모드를 불러와서 거기에 score를 수정합니다. 

간단하죠?

-GameMode의 동전관리

총 동전 수를 알아와야 하고 현재 동전수를 관리합니다.

// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved. #pragma once #include "CoreMinimal.h" #include "GameFramework/GameModeBase.h" #include "HowToMakeHTML5GameMode.generated.h" UCLASS(minimalapi) class AHowToMakeHTML5GameMode : public AGameModeBase { GENERATED_BODY() public: AHowToMakeHTML5GameMode(); private: int playerScore; public: void setPlayerScore(int param); int getPlayerScore(); void addPlayerScore(); protected: virtual void BeginPlay() override; };

// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved. #include "HowToMakeHTML5GameMode.h" #include "HowToMakeHTML5Character.h" #include "UObject/ConstructorHelpers.h" #include "Runtime/Engine/Public/EngineUtils.h" #include "Coin.h" #include <string> AHowToMakeHTML5GameMode::AHowToMakeHTML5GameMode() { // set default pawn class to our Blueprinted character static ConstructorHelpers::FClassFinder<APawn> PlayerPawnBPClass(TEXT("/Game/ThirdPersonCPP/Blueprints/ThirdPersonCharacter")); if (PlayerPawnBPClass.Class != NULL) { DefaultPawnClass = PlayerPawnBPClass.Class; } } void AHowToMakeHTML5GameMode::setPlayerScore(int param) { if(param<0) { throw param; } playerScore = param; } int AHowToMakeHTML5GameMode::getPlayerScore() { return playerScore; } void AHowToMakeHTML5GameMode::addPlayerScore() { playerScore += 1; } void AHowToMakeHTML5GameMode::BeginPlay() { Super::BeginPlay(); TActorIterator< ACoin > ActorItr =TActorIterator< ACoin >(GetWorld()); int currentWorldCoinCount=ActorItr.GetProgressNumerator(); currentWorldCoinCount -=2; if(currentWorldCoinCount <0) { currentWorldCoinCount = 0; } //for debug=========================================================== UE_LOG(LogTemp, Warning, TEXT("AHowToMakeHTML5GameMode::BeginPlay()")); std::string str = std::to_string(currentWorldCoinCount); TCHAR ch[20]; const char* all = str.c_str(); int len = 1 + strlen(all); wchar_t* t = new wchar_t[len]; if (NULL == t) throw std::bad_alloc(); mbstowcs(t, all, len); _tcscpy_s(ch, t); UE_LOG(LogTemp, Warning, ch); //============================================================== }

로그로 현재 동전의 수를 나타내 줍니다.

그런데 월드에서 찾는 Coin이 2개더 잡히는데...어디서 잡히는거지?...이거 의문이네..

아무튼 이렇게 해서 Coin편 끝.