I supposed to using the cocos2dx + C++ to do the most job in application, and use lua to some ui part job.
And here is a question:
In bool AppDelegate::applicationDidFinishLaunching(): I using this codes to config the design screen size
glview->setDesignResolutionSize(designResolutionSize.width, designResolutionSize.height, ResolutionPolicy::NO_BORDER);
But what will happen if I change the config in config.lua.
CONFIG_SCREEN_ORIENTATION = "landscape"
-- design resolution
CONFIG_SCREEN_WIDTH = 960
CONFIG_SCREEN_HEIGHT = 640
-- auto scale mode
CONFIG_SCREEN_AUTOSCALE = "FIXED_HEIGHT"
Is there any solution can resolve the config issue if I am using c++ and lua?
Finally, after some test, I found a way to resolve it.
The c++ codes only work in the c++ enviroment, and the lua config only works in the lua enviroment, so we have to let the properties of them be same.
Related
How do I implement a function to load a dll(aka framework) on Mac OS using C++?
void LoadFramework(const char* frameworkPath)
{
//frameworkPath is the absolute path of the framework
}
Edit:
When I google searched for this problem, I mostly ended up with dlopen solution to load the framework. What I am instead looking for is to use CFBundleCreate to load the framework. It seems to me that there are a bunch of methods needed to be called to construct an URL from const char * path. I found the needed code in pieces, and could not write one comprehensive solution.
It typically is just a few lines of straightforward code to open a framework in Mac, something along the lines of :
bundleURL = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
CFSTR("/System/Library/Frameworks/<your_framework_name.framework>"),
kCFURLPOSIXPathStyle, true);
bundle = CFBundleCreate(kCFAllocatorDefault, bundleURL);
assert(bundle != NULL);
and pretty much everything in that snippet is well documented. I would suggest adding more detail in the question, as to the specifics of what exactly is not working for you.
Why not do this?
using DLL_Namespace;
This should give you access to the DLL.
I am getting started with Unreal Engine 4. I come from Libgdx and I am familiarized using WebSockets clients in my games and NodeJS with 'ws' on the server.
How ever, I can't find information about Websockets and Unreal Engine 4.
I know that given that it is programmed with C++ you can add external static libraries to the unreal project.
Can I use this c++ websocket library?
https://github.com/zaphoyd/websocketpp
Will it run on Windows, Mac and console?
I am not an expert of c++ and static libraries.
Please help, thanks!
You can follow this tutorial on TCP Sockets.
You will need to make some changes on the code, as it doesn't run on UE 4.10 (the tutorial is originally from 2014).
On the .h file define 2 timer handles:
FTimerHandle TimerHandle_Connection;
FTimerHandle TimerHandle_Socket;
On the .cpp file, inside StartTCPReceiver(...) change the line where the timer is set to:
GetWorldTimerManager().SetTimer(TimerHandle_Connection, this, &AYourClass::TCPConnectionListener, 0.01, true);
and on TCPConnectionListener(...) change the line where the timer is set to:
GetWorldTimerManager().ClearTimer(TimerHandle_Connection);//optional, only if you want to stop listening for new connections
GetWorldTimerManager().SetTimer(TimerHandle_Socket, this, &AYourClass::TCPSocketListener, 0.01, true);
(Another option would be to thread these functions instead of having them in timers)
Just in case, if you are new to UE, don't add the code directly on the IDE. Go to the Content Browser > Add New > New C++ Class. You can create a new class that inherits from Actor, and when you want to start to listen to connections, you spawn that Actor.
You can use any websocket or third party asset with unreal engine. You can simply add the headers in your Build.cs file using PrivateIncludePathModuleNames for example (there's also a public include path) and it takes an array of strings where each string is a folder essentially. If you want to add a library (lib) file you can just add it like this:
if (Target.Platform == UnrealTargetPlatform.Win32 ||
Target.Platform == UnrealTargetPlatform.Win64)
{
PublicSystemLibraries.Add("crypt32.lib");
}
You can also add full paths here. If you want to do a delayed load you can just use PublicDelayLoadedDlls.Add("name") <- I may have the syntax wrong on this one but it's easy to google it.
I'm trying to launch an image using WinRT API WIndows::System::Launcher::LaunchFileAsync().
Code snippet is as follows:
RoInitialize(RO_INIT_MULTITHREADED);
String^ imagePath = ref new String(L"C:\\Users\\GoodMan\\Pictures\\wood.png");
auto file = Storage::StorageFile::GetFileFromPathAsync(imagePath);
Windows::System::Launcher::LaunchFileAsync(file);
I'm getting this error from the LaunchFileAsync() API:
error C2665: 'Windows::System::Launcher::LaunchFileAsync' : none of
the 2 overloads could convert all the argument types
Can I please get help how to solve this. I'm very new to WinRT C++ coding .
The method GetFileFromPathAsync does not return a StorageFile, but it returns IAsyncOperation<StorageFile>^. What you have to do is convert the latter to the former, as follows:
using namespace concurrency;
String^ imagePath = ref new String(L"C:\\Users\\GoodMan\\Pictures\\wood.png");
auto task = create_task(Windows::Storage::StorageFile::GetFileFromPathAsync(imagePath));
task.then([this](Windows::Storage::StorageFile^ file)
{
Windows::System::Launcher::LaunchFileAsync(file);
});
Generally all Windows Store app framework methods that end in Async will return either an IAsyncOperation, or a task. These methods are what are known as asynchronous methods, and require some special handling. See this article for more info: Asynchronous programming in C++ .
So now everything is great, correct? Well, not quite. There is another issue with your code. It is that when you run the code above, you will get an access-denied error. The reason is that Windows Store Apps are sandboxed, and you cannot generally access just any file on the filesystem.
You are in luck, though, because you are trying to access a file in your Pictures folder. The Pictures folder is a special folder that Windows Store apps have access to. You can get at it using the KnownFolders class:
using namespace concurrency;
Windows::Storage::StorageFolder^ pictures =
Windows::Storage::KnownFolders::PicturesLibrary;
auto task = create_task(pictures->GetFileAsync("wood.png"));
task.then([this](Windows::Storage::StorageFile^ file)
{
Windows::System::Launcher::LaunchFileAsync(file);
});
Note that in order to access the Pictures folder your application has to declare it in the project manifest. To do so, double click on the Package.appmanifest file in the project "tree" in Visual Studio, and select the Capabilities tab. Then under Capabilities, check Pictures Library.
I'm looking for a simple example code for C++\IronPython integration, i.e. embedding python code inside a C++, or better yet, Visual C++ program.
The example code should include: how to share objects between the languages, how to call functions\methods back and forth etc...
Also, an explicit setup procedure would help too. (How to include the Python runtime dll in Visual Studio etc...)
I've found a nice example for C#\IronPython here, but couldn't find C++\IronPython example code.
UPDATE - I've written a more generic example (plus a link to a zip file containing the entire VS2008 project) as entry on my blog here.
Sorry, I am so late to the game, but here is how I have integrated IronPython into a C++/cli app in Visual Studio 2008 - .net 3.5. (actually mixed mode app with C/C++)
I write add-ons for a map making applicaiton written in Assembly. The API is exposed so that C/C++ add-ons can be written. I mix C/C++ with C++/cli. Some of the elements from this example are from the API (such as XPCALL and CmdEnd() - please just ignore them)
///////////////////////////////////////////////////////////////////////
void XPCALL PythonCmd2(int Result, int Result1, int Result2)
{
if(Result==X_OK)
{
try
{
String^ filename = gcnew String(txtFileName);
String^ path = Assembly::GetExecutingAssembly()->Location;
ScriptEngine^ engine = Python::CreateEngine();
ScriptScope^ scope = engine->CreateScope();
ScriptSource^ source = engine->CreateScriptSourceFromFile(String::Concat(Path::GetDirectoryName(path), "\\scripts\\", filename + ".py"));
scope->SetVariable("DrawingList", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingList::typeid));
scope->SetVariable("DrawingElement", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingElement::typeid));
scope->SetVariable("DrawingPath", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingPath::typeid));
scope->SetVariable("Node", DynamicHelpers::GetPythonTypeFromType(AddIn::Node::typeid));
source->Execute(scope);
}
catch(Exception ^e)
{
Console::WriteLine(e->ToString());
CmdEnd();
}
}
else
{
CmdEnd();
}
}
///////////////////////////////////////////////////////////////////////////////
As you can see, I expose to IronPython some objects (DrawingList, DrawingElement, DrawingPath & Node). These objects are C++/cli objects that I created to expose "things" to IronPython.
When the C++/cli source->Execute(scope) line is called, the only python line
to run is the DrawingList.RequestData.
RequestData takes a delegate and a data type.
When the C++/cli code is done, it calls the delegate pointing to the
function "diamond"
In the function diamond it retrieves the requested data with the call to
DrawingList.RequestedValue() The call to DrawingList.AddElement(dp) adds the
new element to the Applications visual Database.
And lastly the call to DrawingList.EndCommand() tells the FastCAD engine to
clean up and end the running of the plugin.
import clr
def diamond(Result1, Result2, Result3):
if(Result1 == 0):
dp = DrawingPath()
dp.drawingStuff.EntityColor = 2
dp.drawingStuff.SecondEntityColor = 2
n = DrawingList.RequestedValue()
dp.Nodes.Add(Node(n.X-50,n.Y+25))
dp.Nodes.Add(Node(n.X-25,n.Y+50))
dp.Nodes.Add(Node(n.X+25,n.Y+50))
dp.Nodes.Add(Node(n.X+50,n.Y+25))
dp.Nodes.Add(Node(n.X,n.Y-40))
DrawingList.AddElement(dp)
DrawingList.EndCommand()
DrawingList.RequestData(diamond, DrawingList.RequestType.PointType)
I hope this is what you were looking for.
If you don't need .NET functionality, you could rely on embedding Python instead of IronPython. See Python's documentation on Embedding Python in Another Application for more info and an example. If you don't mind being dependent on BOOST, you could try out its Python integration library.
Can I convert my VB code to C++? How can I do it?
This is my VB code:
Dim OpenFileDialog1 As New OpenFileDialog
With OpenFileDialog1
.CheckFileExists = True
.ShowReadOnly = False
.Filter = "All Files|*.*|Bitmap Files (*)|*.bmp;*.gif;*.jpg"
.FilterIndex = 2
If .ShowDialog = DialogResult.OK Then
' Load the specified file into a PictureBox control.
PictureBox1.Image = Image.FromFile(.FileName)
End If
End With
Well you can convert it to C++, and using a graphical library might be the easiest way to do so.
I recommend using Qt. It is a fairly simple graphical framework which works on several platforms. We currently don't know which platform you target, however I assume you're targeting Windows since you showed an example in Visual Basic.
Typically, using Qt classes QFileDialog and QPicture, you should be able to achieve your goal quite quick.
The framework is shipped with a whole set of simple examples. One of them is exactly what you ask.
Here is an MSDN-Example for an OpenFileDialog using the WinAPI.