UE4升级4.20引擎修改
我的知乎链接：https://zhuanlan.zhihu.com/p/43314125
1、
bool FOnlineSubsystemSteam::Init()
{
bool bRelaunchInSteam = false;
int RelaunchAppId = 0;
ConfigureSteamInitDevOptions(bRelaunchInSteam, RelaunchAppId);
const bool bIsServer = IsRunningDedicatedServer();
if (bIsServer)
{
return false;//@CYX
}
bool bAttemptServerInit = true;
2、
/** Pass current state to server */
UFUNCTION(unreliable, server, WithValidation)//@cyx
void ServerUpdateState(float InSteeringInput, float InThrottleInput, float InBrakeInput, float InHandbrakeInput, int32 CurrentGear);
3、
case WM_SYSKEYDOWN:
{
// Alt-F4 or Alt+Space was pressed.
// Allow alt+f4 to close the window and alt+space to open the window menu
/*if( wParam != VK_F4 && wParam != VK_SPACE) @cyx
{
DeferMessage( CurrentNativeEventWindowPtr, hwnd, msg, wParam, lParam );
}*/
if (wParam != VK_SPACE)//@cyx
{
DeferMessage(CurrentNativeEventWindowPtr, hwnd, msg, wParam, lParam);
if (wParam == VK_F4)
{
return 0;
}
}
}
break;
4、
class FMalloc* FUnixPlatformMemory::BaseAllocator()
{
#if UE4_DO_ROOT_PRIVILEGE_CHECK
// This function gets executed very early, way before main() (because global constructors will allocate memory).
// This makes it ideal, if unobvious, place for a root privilege check.
//@CYX 允许root用户权限开启
//if (geteuid() == 0)
//{
//fprintf(stderr, "Refusing to run with the root privileges.\n");
//FPlatformMisc::RequestExit(true);
//// unreachable
//return nullptr;
//}
#endif // UE4_DO_ROOT_PRIVILEGE_CHECK
5、
static float AngleLerp = 0.05f; //static float AngleLerp = 0.4f; @cyx
static FAutoConsoleVariableRef CVarAngSet(TEXT("p.AngleLerp"), AngleLerp, TEXT(""));
void FPhysicsReplication::OnTick(float DeltaSeconds, TMap
{
const FRigidBodyErrorCorrection& PhysicErrorCorrection = UPhysicsSettings::Get()->PhysicErrorCorrection;
// Get the ping between this PC & the server
const float LocalPing = GetLocalPing();
for (auto Itr = ComponentsToTargets.CreateIterator(); Itr; ++Itr)
{
bool bRemoveItr = false;
if (UPrimitiveComponent* PrimComp = Itr.Key().Get())
{
if(FBodyInstance* BI = PrimComp->GetBodyInstance(Itr.Value().BoneName))
{
FReplicatedPhysicsTarget& PhysicsTarget = Itr.Value();
FRigidBodyState& UpdatedState = PhysicsTarget.TargetState;
bool bUpdated = false;
AActor* OwningActor = PrimComp->GetOwner();
if (OwningActor && (OwningActor->Role == ROLE_SimulatedProxy || OwningActor->Role == ROLE_AutonomousProxy))//TODO: can we avoid the replication all together? @cyx
{
6、
void UGameInstance::StartGameInstance()
{
UEngine* const Engine = GetEngine();
// Create default URL.
// @note: if we change how we determine the valid start up map update LaunchEngineLoop's GetStartupMap()
FURL DefaultURL;
DefaultURL.LoadURLConfig(TEXT("DefaultPlayer"), GGameIni);
// Enter initial world.
EBrowseReturnVal::Type BrowseRet = EBrowseReturnVal::Failure;
FString Error;
const TCHAR* Tmp = FCommandLine::Get();
#if UE_BUILD_SHIPPING && !UE_SERVER && !UE_ALLOW_MAP_OVERRIDE_IN_SHIPPING && !ENABLE_PGO_PROFILE
// In shipping don't allow a map override unless on server, or running PGO profiling
//Tmp = TEXT("");//@cyx
#endif // UE_BUILD_SHIPPING && !UE_SERVER && !UE_ALLOW_MAP_OVERRIDE_IN_SHIPPING && !ENABLE_PGO_PROFILE
7、
// force game thread can be turned on later, but we are not concerned about that, those are only cvars and constants; if those are changed during a frame, they won't fully kick in till next frame.
if (CurrentState == EComponentMarkedForEndOfFrameUpdateState::Marked && bForceGameThread)
{
ComponentsThatNeedEndOfFrameUpdate.Remove(WeakComponent); //verify(ComponentsThatNeedEndOfFrameUpdate.Remove(WeakComponent) == 1);@cyx
CurrentState = EComponentMarkedForEndOfFrameUpdateState::Unmarked;
}
8、
FString appGetStartupMap(const TCHAR* CommandLine)
{
FURL DefaultURL;
DefaultURL.LoadURLConfig( TEXT("DefaultPlayer"), GGameIni );
// convert commandline to a URL
FString Error;
TCHAR Parm[4096]=TEXT("");
#if UE_BUILD_SHIPPING
// In shipping don't allow an override
//CommandLine = NULL;//@cyx
#endif // UE_BUILD_SHIPPING
9、
FReply SButton::OnMouseButtonDown( const FGeometry& MyGeometry, const FPointerEvent& MouseEvent )
{
FReply Reply = FReply::Unhandled();
if (IsEnabled() && (MouseEvent.GetEffectingButton() == EKeys::LeftMouseButton || MouseEvent.IsTouchEvent()))
{
Press();
PressedScreenSpacePosition = MouseEvent.GetScreenSpacePosition();
if( ClickMethod == EButtonClickMethod::MouseDown )
{
//get the reply from the execute function
Reply = OnClicked.IsBound() ? OnClicked.Execute() : FReply::Handled();
//You should ALWAYS handle the OnClicked event.
ensure(Reply.IsEventHandled() == true);
}
else if ( IsPreciseTapOrClick(MouseEvent) )
{
// do not capture the pointer for precise taps or clicks
//
//Reply = FReply::Handled();@cyx
}
else
{
//we need to capture the mouse for MouseUp events
Reply = FReply::Handled().CaptureMouse( AsShared() );
}
}
10、
///
/// Enable exceptions for all modules.
///
[RequiresUniqueBuildEnvironment]
public bool bForceEnableExceptions = true;//@cyx
11、
if (Rules.bUseLoggingInShipping)
{
GlobalCompileEnvironment.Definitions.Add("USE_LOGGING_IN_SHIPPING=1");
}
else
{
GlobalCompileEnvironment.Definitions.Add("USE_LOGGING_IN_SHIPPING=1");//@cyx
}
12、
// Don't create a side-by-side manifest file for the executable.
Arguments.Add("/MANIFEST:NO");
//Arguments.Add("/MANIFEST"); // @CYX Arguments.Add("/MANIFEST:NO");
//Arguments.Add("/MANIFESTFILE:\"E:/MyShooterGame/Binaries/Win64/ShooterGame-Win64-Shipping.exe.intermediate.manifest\"");//@CYX
//Arguments.Add("/ALLOWISOLATION");//@CYX
//Arguments.Add("/MANIFESTUAC:\"level='requireAdministrator' uiAccess='false'\"");//@CYX
// Prevents the linker from displaying its logo for each invocation.
Arguments.Add("/NOLOGO");
13、
steam_api.h文件
virtual ~CCallbackImpl() { if ( m_nCallbackFlags & k_ECallbackFlagsRegistered ) SteamAPI_UnregisterCallback( this ); }//@cyx virtual
virtual ~CCallResult(); //@cyx virtual