MumbleLink (Memory Shared File)

[HezkoreParticipant]

I’m trying to get some information from the game Guild Wars 2, things such as player position.
Apparently the game supports something called Mumble, which is a VOIP application with positional sound.
And for Mumble to work, Guild Wars 2 creates something called a MumbleLink, which is a shared memory file.
Now… I’ve found this: https://wiki.guildwars2.com/wiki/API:MumbleLink
It tells us exactly how the MumbleLink file is structured.
And here’s some actual code from the Mumble Wiki: http://wiki.mumble.info/wiki/Link

I’m not very familiar with C++ so this doesn’t really help me a whole lot heh.
But I do know that Monkey 2 can import external code like that.
Can I somehow use that code to access the Guild Wars 2 data I need?

[HezkoreParticipant]

I’ve managed to get Mumble working, and this should work with any Mumble supported game.
You’ll need this mumble.h file:

C++

#include <windows.h> struct LinkedMem { UINT32 uiVersion; DWORD uiTick; float fAvatarPosition[3]; float fAvatarFront[3]; float fAvatarTop[3]; wchar_t name[256]; float fCameraPosition[3]; float fCameraFront[3]; float fCameraTop[3]; wchar_t identity[256]; UINT32 context_len; unsigned char context[256]; wchar_t description[2048]; }; static LinkedMem *lm = NULL; static void initMumble() { // HANDLE hMapObject = OpenFileMappingW(FILE_MAP_ALL_ACCESS, FALSE, L"MumbleLink"); HANDLE hMapObject = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof(LinkedMem), L"MumbleLink"); if (hMapObject == NULL) return; lm = (LinkedMem *) MapViewOfFile(hMapObject, FILE_MAP_ALL_ACCESS, 0, 0, sizeof(LinkedMem)); if (lm == NULL) { CloseHandle(hMapObject); hMapObject = NULL; return; } }

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#include <windows.h> struct LinkedMem { UINT32 uiVersion; DWORD uiTick; float fAvatarPosition[3]; float fAvatarFront[3]; float fAvatarTop[3]; wchar_t name[256]; float fCameraPosition[3]; float fCameraFront[3]; float fCameraTop[3]; wchar_t identity[256]; UINT32 context_len; unsigned char context[256]; wchar_t description[2048]; }; static LinkedMem *lm = NULL; static void initMumble() { // HANDLE hMapObject = OpenFileMappingW(FILE_MAP_ALL_ACCESS, FALSE, L"MumbleLink"); HANDLE hMapObject = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof(LinkedMem), L"MumbleLink"); if (hMapObject == NULL) return; lm = (LinkedMem *) MapViewOfFile(hMapObject, FILE_MAP_ALL_ACCESS, 0, 0, sizeof(LinkedMem)); if (lm == NULL) { CloseHandle(hMapObject); hMapObject = NULL; return; } }

And here’s the Monkey 2 wrapper for it:

Monkey

Namespace mumble #Import "mumble.h" Extern Struct LinkedMem Field uiVersion:UInt Field fAvatarPosition:Float[] Field fAvatarFront:Float[] Field fAvatarTop:Float[] Field fCameraPosition:Float[] Field fCameraFront:Float[] Field fCameraTop:Float[] Field name:String Field identity:String Field context_len:Int Field context:UByte[] Field description:String End Function initMumble_C:Void()="initMumble" Function updateMumble_C:Void()="updateMumble" Global lm:LinkedMem Ptr Public Global link:LinkedMem Function InitMumble:Int() initMumble_C() If lm Then link=lm[0] Return 1 Else Return 0 Endif End Function UpdateMumble() If lm Then link=lm[0] End

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Namespace mumble   #Import "mumble.h"   Extern Struct LinkedMem Field uiVersion:UInt Field fAvatarPosition:Float[] Field fAvatarFront:Float[] Field fAvatarTop:Float[] Field fCameraPosition:Float[] Field fCameraFront:Float[] Field fCameraTop:Float[] Field name:String Field identity:String Field context_len:Int Field context:UByte[] Field description:String End Function initMumble_C:Void()="initMumble" Function updateMumble_C:Void()="updateMumble" Global lm:LinkedMem Ptr Public   Global link:LinkedMem   Function InitMumble:Int() initMumble_C() If lm Then link=lm[0] Return 1 Else Return 0 Endif End   Function UpdateMumble() If lm Then link=lm[0] End

You use it by first calling InitMumble()
Then call UpdateMumble() as you want new information. (every frame)
You then use the Global link variable to check your avatars/cameras position, rotation, name etc.

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