3 files changed, 79 insertions, 44 deletions

@@ -2,25 +2,87 @@
 #include <psapi.h>
 #include <tlhelp32.h>
 #include <iostream>
+#include <string>
 #include <cassert>
 
 #undef PROCESSENTRY32
 #undef Process32Next
 
+Memory::Memory(const std::wstring& processName) : _processName(processName) {
+}
+
+Memory::~Memory() {
+    if (_threadActive) {
+        _threadActive = false;
+        _thread.join();
+    }
+    if (_handle != nullptr) {
+            CloseHandle(_handle);
+    }
+}
+
+void Memory::StartHeartbeat(HWND window, std::chrono::milliseconds beat) {
+    if (_threadActive) return;
+    _threadActive = true;
+    _thread = std::thread([sharedThis = shared_from_this(), window, beat]{
+        while (sharedThis->_threadActive) {
+            sharedThis->Heartbeat(window);
+            std::this_thread::sleep_for(beat);
+        }
+    });
+    _thread.detach();
+}
+
+void Memory::Heartbeat(HWND window) {
+    if (!_handle && !Initialize()) {
+        // Couldn't initialize, definitely not running
+        PostMessage(window, WM_COMMAND, HEARTBEAT, (LPARAM)ProcStatus::NotRunning);
+        return;
+    }
+
+    DWORD exitCode = 0;
+    assert(_handle);
+    GetExitCodeProcess(_handle, &exitCode);
+    if (exitCode != STILL_ACTIVE) {
+        // Process has exited, clean up.
+        _computedAddresses.clear();
+        _handle = NULL;
+        PostMessage(window, WM_COMMAND, HEARTBEAT, (LPARAM)ProcStatus::NotRunning);
+        return;
+    }
+
+#if GLOBALS == 0x5B28C0
+    int currentFrame = ReadData<int>({0x5BE3B0}, 1)[0];
+#elif GLOBALS == 0x62D0A0
+    int currentFrame = ReadData<int>({0x63954C}, 1)[0];
+#endif
+    int frameDelta = currentFrame - _previousFrame;
+    _previousFrame = currentFrame;
+    if (frameDelta < 0 && currentFrame < 250) {
+        PostMessage(window, WM_COMMAND, HEARTBEAT, (LPARAM)ProcStatus::NewGame);
+        return;
+    }
+
+    // TODO: Some way to return ProcStatus::Randomized vs ProcStatus::NotRandomized vs ProcStatus::DeRandomized;
+
+    PostMessage(window, WM_COMMAND, HEARTBEAT, (LPARAM)ProcStatus::Running);
+}
+
+
 [[nodiscard]]
-bool Memory::Initialize(const std::wstring& processName) {
+bool Memory::Initialize() {
         // First, get the handle of the process
         PROCESSENTRY32W entry;
         entry.dwSize = sizeof(entry);
         HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
         while (Process32NextW(snapshot, &entry)) {
-                if (processName == entry.szExeFile) {
+                if (_processName == entry.szExeFile) {
                         _handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, entry.th32ProcessID);
                         break;
                 }
         }
         if (!_handle) {
-                std::cerr << "Couldn't find " << processName.c_str() << ", is it open?" << std::endl;
+                std::cerr << "Couldn't find " << _processName.c_str() << ", is it open?" << std::endl;
         return false;
         }
 
@@ -33,7 +95,7 @@ bool Memory::Initialize(const std::wstring& processName) {
         for (DWORD i = 0; i < numModules / sizeof(HMODULE); i++) {
                 int length = GetModuleBaseNameW(_handle, moduleList[i], &name[0], static_cast<DWORD>(name.size()));
                 name.resize(length);
-                if (processName == name) {
+                if (_processName == name) {
                         _baseAddress = (uintptr_t)moduleList[i];
                         break;
                 }
@@ -45,42 +107,6 @@ bool Memory::Initialize(const std::wstring& processName) {
     return true;
 }
 
-ProcStatus Memory::Heartbeat(const std::wstring& processName) {
-    if (!_handle && !Initialize(processName)) {
-        // Couldn't initialize, definitely not running
-        return ProcStatus::NotRunning;
-    }
-
-    DWORD exitCode = 0;
-    GetExitCodeProcess(_handle, &exitCode);
-    if (exitCode != STILL_ACTIVE) {
-        // Process has exited, clean up.
-        _computedAddresses.clear();
-        _handle = NULL;
-        return ProcStatus::NotRunning;
-    }
-
-    int currentFrame = 0x7FFFFFFF;
-        if (GLOBALS == 0x5B28C0) {
-        currentFrame = ReadData<int>({0x5BE3B0}, 1)[0];
-        } else if (GLOBALS == 0x62D0A0) {
-        currentFrame = ReadData<int>({0x63954C}, 1)[0];
-        } else {
-        assert(false);
-        }
-    if (currentFrame < 80) return ProcStatus::NewGame;
-
-    // TODO: Some way to return ProcStatus::Randomized vs ProcStatus::NotRandomized vs ProcStatus::DeRandomized;
-
-    return ProcStatus::Running;
-}
-
-Memory::~Memory() {
-    if (_handle != nullptr) {
-            CloseHandle(_handle);
-    }
-}
-
 void Memory::AddSigScan(const std::vector<byte>& scanBytes, const std::function<void(int index)>& scanFunc)
 {
         _sigScans[scanBytes] = {scanFunc, false};
@@ -1,12 +1,14 @@
 #pragma once
 #include <functional>
 #include <map>
+#include <thread>
 #include <vector>
 #include <windows.h>
 
 // #define GLOBALS 0x5B28C0
 #define GLOBALS 0x62D0A0
 
+#define HEARTBEAT 0x401
 enum class ProcStatus {
     NotRunning,
     Running,
@@ -17,11 +19,11 @@ enum class ProcStatus {
 // http://stackoverflow.com/q/32798185
 // http://stackoverflow.com/q/36018838
 // http://stackoverflow.com/q/1387064
-class Memory {
+class Memory final : public std::enable_shared_from_this<Memory> {
 public:
-        Memory() = default;
-    ProcStatus Heartbeat(const std::wstring& processName);
+        Memory(const std::wstring& processName);
         ~Memory();
+    void StartHeartbeat(HWND window, std::chrono::milliseconds beat = std::chrono::milliseconds(1000));
 
         Memory(const Memory& memory) = delete;
         Memory& operator=(const Memory& other) = delete;
@@ -74,10 +76,15 @@ private:
                 ThrowError();
         }
 
-        bool Initialize(const std::wstring& processName);
+    void Heartbeat(HWND window);
+        bool Initialize();
         void ThrowError();
         void* ComputeOffset(std::vector<int> offsets);
 
+    int _previousFrame = 0;
+    bool _threadActive = false;
+    std::thread _thread;
+    std::wstring _processName;
         std::map<uintptr_t, uintptr_t> _computedAddresses;
         uintptr_t _baseAddress = 0;
         HANDLE _handle = nullptr;
@@ -158,9 +158,11 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="Memory.h" />
+    <ClInclude Include="Random.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Memory.cpp" />
+    <ClCompile Include="Random.cpp" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">