Patch #2183224: Call of Duty 2 positional audio [dd0t]

git-svn-id: https://mumble.svn.sourceforge.net/svnroot/mumble/trunk@1334 05730e5d-ab1b-0410-a4ac-84af385074fa

2 files changed, 167 insertions, 0 deletions

diff --git a/plugins/cod2/cod2.cpp b/plugins/cod2/cod2.cpp
new file mode 100644
index 000000000..077417f47
--- /dev/null
+++ b/plugins/cod2/cod2.cpp
@@ -0,0 +1,160 @@
+#define _USE_MATH_DEFINES 
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <windows.h>
+#include <tlhelp32.h>
+#include <math.h>
+
+#include "../mumble_plugin.h"
+
+HANDLE h = NULL;
+
+static DWORD getProcess(const wchar_t *exename) {
+	PROCESSENTRY32 pe;
+	DWORD pid = 0;
+
+	pe.dwSize = sizeof(pe);
+	HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+	if (hSnap != INVALID_HANDLE_VALUE) {
+		BOOL ok = Process32First(hSnap, &pe);
+
+		while (ok) {
+			if (wcscmp(pe.szExeFile, exename)==0) {
+				pid = pe.th32ProcessID;
+				break;
+			}
+			ok = Process32Next(hSnap, &pe);
+		}
+		CloseHandle(hSnap);
+	}
+	return pid;
+}
+
+static bool peekProc(VOID *base, VOID *dest, SIZE_T len) {
+	SIZE_T r;
+	BOOL ok=ReadProcessMemory(h, base, dest, len, &r);
+	return (ok && (r == len));
+}
+
+static void about(HWND h) {
+	::MessageBox(h, L"Reads audio position information from cod2 (v 1.3)", L"Mumble cod2 Plugin", MB_OK);
+}
+
+
+static int fetch(float *pos, float *front, float *top) {
+	float viewHor, viewVer;
+	char state;
+
+	for (int i=0;i<3;i++)
+		pos[i]=front[i]=top[i]=0.0;
+
+	bool ok;
+
+	/*
+		This plugin uses the following Variables:
+
+			Address			Type	Description
+			===================================
+			0x01516608		float	Z-Coordinate (=0 out-of-game)
+			0x0151660C		float	X-Coordinate (=0 out-of-game)
+			0x01516610		float	Y-Coordinate (=0 out-of-game)
+			0x0151A114		float	Horizontal view (degrees) (=0 out-of-game)
+			0x0151A110		float	Vertical view (degrees) (=0 out-of-game)
+			0x0096B688		byte	Magic value (0=ingame/out-of-game, 4=spectator)
+	*/
+	ok = peekProc((BYTE *) 0x0096B688, &state, 1);
+	if (! ok)
+		return false;
+
+	if (state == 4)
+		return true; // If this magic value is 4 we are spectating, so switch of PA
+
+	ok = peekProc((BYTE *) 0x01516608, pos+2, 4) &&	//Z
+		 peekProc((BYTE *) 0x0151660C, pos, 4) &&	//X
+		 peekProc((BYTE *) 0x01516610, pos+1, 4) && //Y
+		 peekProc((BYTE *) 0x0151A114, &viewHor, 4) && //Hor
+		 peekProc((BYTE *) 0x0151A110, &viewVer, 4); //Ver
+
+	if (! ok)
+		return false;
+
+	// Scale Coordinates
+	/* 
+	   Z-Value is increasing when heading north
+				  decreasing when heading south
+	   X-Value is increasing when heading west
+				  decreasing when heading east
+	   Y-Value is increasing when going up
+				  decreasing when going down
+	   40 units = 1 meter (not confirmed)
+	*/
+	for (int i=0;i<3;i++)
+		pos[i]/=40; // Scale to meters
+	pos[0]*=(-1); // Convert right to left handed
+
+	// Fake top vector
+	top[2] = -1; // Head movement is in front vector
+	// Calculate view unit vector
+	/*
+	   Vertical view 0 when centered
+					85	when looking down
+				   275 when looking up
+	   Decreasing when looking up.
+	   
+	   Horizontal is 0 when facing North
+					90 when facing West
+				   180 when facing South
+				   270 when facing East
+	   Increasing when turning left.
+	*/
+	viewVer *= (float)M_PI/180;
+	viewHor *= (float)M_PI/180;
+
+	front[0] = -sin(viewHor) * cos(viewVer);
+	front[1] = -sin(viewVer);
+	front[2] = cos(viewHor) * cos(viewVer);
+
+	return ok;
+}
+
+static int trylock() {
+	h = NULL;
+	DWORD pid=getProcess(L"CoD2MP_s.exe");
+	if (!pid)
+		return false;
+
+	h=OpenProcess(PROCESS_VM_READ, false, pid);
+	if (!h)
+		return false;
+
+	float pos[3], front[3], top[3];
+	if (fetch(pos, front, top))
+		return true;
+
+	CloseHandle(h);
+	h = NULL;
+	return false;
+}
+
+static void unlock() {
+	if (h) {
+		CloseHandle(h);
+		h = NULL;
+	}
+}
+
+static MumblePlugin cod2plug = {
+	MUMBLE_PLUGIN_MAGIC,
+	L"Call of Duty 2 v1.3",
+	L"Call of Duty 2",
+	about,
+	NULL,
+	trylock,
+	unlock,
+	fetch
+};
+
+extern "C" __declspec(dllexport) MumblePlugin *getMumblePlugin() {
+	return &cod2plug;
+}
diff --git a/plugins/cod2/cod2.pro b/plugins/cod2/cod2.pro
new file mode 100644
index 000000000..954d45521
--- /dev/null
+++ b/plugins/cod2/cod2.pro
@@ -0,0 +1,7 @@
+include(../plugins.pri)
+
+TARGET		= cod2
+SOURCES		= cod2.cpp
+LIBS		+= -luser32
+
+