Clean up code

src/dllmain.cpp

@@ -75,7 +75,7 @@ void ImGuiThread(void* param) {
         }
     }
 
-    if (!Hook::Inject(&ScriptExData::DrawFrames)) {
+    if (!Hook::Inject(&ScriptExData::RenderFrames)) {
         MessageBox(HWND_DESKTOP, "Failed to inject dxhook..", "ImGuiRedux", MB_ICONERROR);
     }
 

src/hook.cpp

@@ -140,6 +140,8 @@ void Hook::ProcessFrame(void* ptr) {
             ScriptExData::SetScaling({scaleX, scaleY});
         }
 
+        ScriptExData::InitRenderStates();
+
         ImGui_ImplWin32_NewFrame();
         if (gRenderer == eRenderer::Dx9) {
             ImGui_ImplDX9_NewFrame();

src/imguiframe.hpp

@@ -0,0 +1,109 @@
+#pragma once
+#include "imgui.h"
+#include <vector>
+#include <functional>
+#include <time.h>
+
+extern enum class eGameVer;
+extern eGameVer gGameVer;
+
+struct FontInfo {
+    bool m_bFontLoaded = false;
+    ImFont *m_pFont = nullptr;
+    std::string m_Path;
+    float m_nSize = 14.0f;
+    size_t m_nStart, m_nEnd;
+};
+
+class ImGuiFrame {
+public:
+    ImGuiContext *m_pContext = nullptr;
+
+    // Scaling related
+    ImVec2 m_vecScaling = ImVec2(1, 1);
+    bool m_bWasScalingUpdatedThisFrame;
+    bool m_bNeedToUpdateScaling; 
+    long long m_nLastScriptCallMS; 
+
+    // Render buffers
+    bool m_bIsBackBufferReady;
+    std::vector<std::function<void()>> m_RenderBuffer, m_BackBuffer; 
+
+    // for ImGui::ImageButton()
+    ImVec4 m_vecImgTint = ImVec4(1, 1, 1, 1);
+    ImVec4 m_vecImgBgCol = ImVec4(1, 1, 1, 1);
+
+    // Fonts
+    std::vector<std::pair<size_t, size_t>> m_FontGlyphRange;
+    std::vector<FontInfo> m_FontTable;
+
+    ImGuiFrame() {
+        // m_pContext = ImGui::CreateContext();
+    }
+
+    ImGuiFrame& operator+=(std::function<void()> f) {
+        if (!m_bIsBackBufferReady) {
+            m_BackBuffer.push_back(f);
+        }
+        return *this;
+    }   
+
+    void BeforeRender() {
+        // bool buildRequired = false;
+        // for (auto& e: m_FontTable) {
+        //     if (!e.m_bFontLoaded) {
+        //         ImWchar ranges[] = { 
+        //             e.m_nStart, e.m_nEnd, 0
+        //         };
+        //         ImGui::GetIO().Fonts->AddFontFromFileTTF(e.m_Path.c_str(), e.m_nSize, NULL, ranges);
+        //         buildRequired = true;
+        //     }
+        // }
+
+        // if (buildRequired) {
+        //     ImGui::GetIO().Fonts->Build();
+        // }
+    }
+
+    void OnRender() {
+        for (auto func : m_RenderBuffer) {
+            func();
+        }
+
+        // if back buffer is render ready switch the buffer and reset render state
+        if (m_bIsBackBufferReady) {
+            m_RenderBuffer = std::move(m_BackBuffer);
+            m_bIsBackBufferReady = false;
+        }
+
+        time_t curTime = time(NULL);
+        // Clear buffer when script stops responding
+        bool scriptsPaused = false;
+        switch(static_cast<int>(gGameVer)) {
+            case 0: // III
+                scriptsPaused = *(bool*)0x95CD7C;
+                break;
+            case 1: // VC
+                scriptsPaused = *(bool*)0xA10B36;
+                break;
+            case 2: // SA
+                scriptsPaused = *(bool*)0xB7CB49;
+                break;
+            default:
+                break;
+        }
+
+        if (curTime-m_nLastScriptCallMS > 2 || scriptsPaused) {
+            OnClear();
+        }
+
+        if (m_bWasScalingUpdatedThisFrame) {
+            m_bNeedToUpdateScaling = false;
+            m_bWasScalingUpdatedThisFrame = false;
+        }
+    }
+
+    void OnClear() {
+        m_RenderBuffer.clear();
+    }
+};