Render.cpp

#include "Render.hpp"
#include "LocalPlayer.hpp"
#include "Player.hpp"
#include "Camera.hpp"
#include "Spectator.hpp"
#include "Aimbot.hpp"
#include "Glow.hpp"
#include "Config.hpp"
#include "imgui.h"
#include "imgui_impl_win32.h"
#include "imgui_impl_dx11.h"
#include <d3d11.h>
#include <tchar.h>
#include <utility>


// Data
static ID3D11Device* g_pd3dDevice = nullptr;
static ID3D11DeviceContext* g_pd3dDeviceContext = nullptr;
static IDXGISwapChain* g_pSwapChain = nullptr;
static UINT                     g_ResizeWidth = 0, g_ResizeHeight = 0;
static ID3D11RenderTargetView* g_mainRenderTargetView = nullptr;

// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
void CleanupRenderTarget();
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);

ImFont* regular_font;
ImFont* bold_font;
ImFont* italic_font;
ImFont* huge_font;

// Define the display names and corresponding values separately
const char* keyNames[] = {
    "Left Mouse Button",
    "Right Mouse Button",
    "Middle Mouse Button",
    "Side1 Mouse Button",
    "Side2 Mouse Button",
    "Left SHIFT Button",
    "Left ALT Button",
    "OFF",
};
int keyValues[] = {
    0x01, // Left Mouse Button
    0x02, // Right Mouse Button
    0x04, // Middle Mouse Button
    0x05, // Side1 Mouse Button
    0x06, // Side2 Mouse Button
    0xA0, // Left SHIFT Button
    0xA4, // Left ALT Button
    0x2A, // A button that is rarely used instead off
};
constexpr int keyCount = sizeof(keyNames) / sizeof(keyNames[0]);

const char* glowNames[] = {
    "Blue",
    "Purple",
    "Gold",
};
int glowValues[] = {
    35, // Blue
    36, // Purple
    37, // Gold
};
constexpr int glowCount = sizeof(glowNames) / sizeof(glowNames[0]);

int FindCurrentSelectionIndex(const int value, const int* keyValues, const int keyCount) {
    for (int i = 0; i < keyCount; ++i) {
        if (value == keyValues[i]) {
            return i;
        }
    }
    return 0; // Default to the first item if not found
}


// Main code
void Render(LocalPlayer* Myself, std::vector<Player*>* Players, Camera* GameCamera, Spectator* Spectators, Aimbot* AimAssist, Sense* ESP)
{
    int width = GetSystemMetrics(SM_CXSCREEN);
    int height = GetSystemMetrics(SM_CYSCREEN);
    // Create application window
    WNDCLASSEXW wc = { sizeof(wc), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(nullptr), nullptr, nullptr, nullptr, nullptr, L"ApexDMA", nullptr };
    ::RegisterClassExW(&wc);
    HWND hwnd = ::CreateWindowEx(WS_EX_LAYERED, wc.lpszClassName, L"ApexDMA", WS_POPUP, 0, 0, width, height, nullptr, nullptr, wc.hInstance, nullptr);

    // Set Transparency, WS_EX_LAYERED is required for transparency
    SetLayeredWindowAttributes(hwnd, 0, 255, LWA_ALPHA);
    SetLayeredWindowAttributes(hwnd, 0, RGB(0, 0, 0), LWA_COLORKEY);

    // Initialize Direct3D
    if (!CreateDeviceD3D(hwnd))
    {
        CleanupDeviceD3D();
        ::UnregisterClassW(wc.lpszClassName, wc.hInstance);
        return;
    }

    // Show the window
    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
    ::UpdateWindow(hwnd);

    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;

    // Setup fonts
    regular_font = io.Fonts->AddFontFromFileTTF("regular.otf", 12.0f);
    bold_font = io.Fonts->AddFontFromFileTTF("bold.otf", 12.0f);
    italic_font = io.Fonts->AddFontFromFileTTF("italic.otf", 12.0f);
    huge_font = io.Fonts->AddFontFromFileTTF("bold.otf", 20.0f);

    io.FontDefault = bold_font;

    // Setup Dear ImGui style
    ImGui::StyleColorsDark();

    // Setup Platform/Renderer backends
    ImGui_ImplWin32_Init(hwnd);
    ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);

    ImVec4 clear_color = ImVec4(0.0f, 0.0f, 0.0f, 0.0f);

    // Main loop
    while (true)
    {
        // Poll and handle messages (inputs, window resize, etc.)
        // See the WndProc() function below for our to dispatch events to the Win32 backend.
        MSG msg;
        while (::PeekMessage(&msg, nullptr, 0U, 0U, PM_REMOVE))
        {
            ::TranslateMessage(&msg);
            ::DispatchMessage(&msg);
            if (msg.message == WM_QUIT)
                break;
        }

        // Handle window resize (we don't resize directly in the WM_SIZE handler)
        if (g_ResizeWidth != 0 && g_ResizeHeight != 0)
        {
            CleanupRenderTarget();
            g_pSwapChain->ResizeBuffers(0, g_ResizeWidth, g_ResizeHeight, DXGI_FORMAT_UNKNOWN, 0);
            g_ResizeWidth = g_ResizeHeight = 0;
            CreateRenderTarget();
        }

        // Start the Dear ImGui frame
        ImGui_ImplDX11_NewFrame();
        ImGui_ImplWin32_NewFrame();
        ImGui::NewFrame();

        // Foreground Drawlist
        ImDrawList* fg_draw = ImGui::GetForegroundDrawList();

        // Performance
        std::string PerformanceString = "Render FPS: " + std::to_string(static_cast<int>(ImGui::GetIO().Framerate));
        fg_draw->AddText(ImVec2(10, 50), IM_COL32(255, 255, 255, 255), PerformanceString.c_str());

        // Settings Window, Fixed Width
        ImGui::SetNextWindowSize(ImVec2(400, 430), ImGuiCond_FirstUseEver);  // ImGuiCond_FirstUseEver 仅当窗口第一次被使用时才应用这个设置
        ImGui::SetNextWindowPos(ImVec2(width - 410, 10), ImGuiCond_FirstUseEver);
        ImGui::Begin("Settings");
        // AimAssist Settings
        ImGui::PushFont(huge_font);  // 通过将字体推入堆栈，可以暂时改变当前的字体，直到它从堆栈中弹出为止
        ImGui::Text("AimAssist Settings");
        ImGui::PopFont();
        ImGui::Text("Sticky Aim:");
        ImGui::SameLine();  // 得接下来的文本或控件与前面的文本处于同一行
        if (ImGui::Checkbox("##Sticky Aim:", &AimAssist->Sticky)) {  // 标签字符串前面添加了 "##"，因此该字符串不会显示在界面上
            Config::GetInstance().Save();  // 复选框与布尔变量 AimAssist->Sticky 关联 复选框的状态发生变化，则条件成立
        }
        ImGui::Text("Aim FOV:");
        if (ImGui::SliderFloat("##Aim FOV:", &AimAssist->FOV, 1.0f, 50.0f, "% .1f")) {
            Config::GetInstance().Save();
        }
        ImGui::Text("Smoothing:");
        if (ImGui::SliderFloat("##Smoothing:", &AimAssist->Smooth, 1.0f, 10.0f, "% .1f")) {
            Config::GetInstance().Save();
        }
        ImGui::Text("Max Smoothing Increase:");
        if (ImGui::SliderFloat("##Max Smoothing Increase:", &AimAssist->MaxSmoothIncrease, 0.0f, 1.0f, "% .2f")) {
            Config::GetInstance().Save();
        }
        ImGui::Text("Recoil:");
        if (ImGui::SliderFloat("##Recoil:", &AimAssist->RecoilCompensation, 1.0f, 5.0f, "% .2f")) {
            Config::GetInstance().Save();
        }

        // For AimBotKey
        int aimBotKeyIndex = FindCurrentSelectionIndex(AimAssist->AimBotKey, keyValues, keyCount);
        ImGui::Text("AimBot Key:");
        if (ImGui::Combo("##AimBotKey", &aimBotKeyIndex, keyNames, keyCount)) {
            AimAssist->AimBotKey = keyValues[aimBotKeyIndex];
            Config::GetInstance().Save();
        }

        // For AimBotKey2
        int aimBotKey2Index = FindCurrentSelectionIndex(AimAssist->AimBotKey2, keyValues, keyCount);
        ImGui::Text("AimBot Key2:");
        if (ImGui::Combo("##AimBotKey2", &aimBotKey2Index, keyNames, keyCount)) {
            AimAssist->AimBotKey2 = keyValues[aimBotKey2Index];
            Config::GetInstance().Save();
        }

        // For AimTriggerKey
        int aimTriggerKeyIndex = FindCurrentSelectionIndex(AimAssist->AimTriggerKey, keyValues, keyCount);
        ImGui::Text("AimTrigger Key:");
        if (ImGui::Combo("##AimTriggerKey", &aimTriggerKeyIndex, keyNames, keyCount)) {
            AimAssist->AimTriggerKey = keyValues[aimTriggerKeyIndex];
            Config::GetInstance().Save();
        }

        // For AimFlickKey
        int aimFlickKeyIndex = FindCurrentSelectionIndex(AimAssist->AimFlickKey, keyValues, keyCount);
        ImGui::Text("AimFlick Key:");
        if (ImGui::Combo("##AimFlickKey", &aimFlickKeyIndex, keyNames, keyCount)) {
            AimAssist->AimFlickKey = keyValues[aimFlickKeyIndex];
            Config::GetInstance().Save();
        }

        // Glow Settings
        ImGui::PushFont(huge_font);
        ImGui::Text("Glow Settings");
        ImGui::PopFont();
        ImGui::Text("Item Glow:");
        ImGui::SameLine();
        if (ImGui::Checkbox("##Item Glow:", &ESP->ItemGlow)) {
            Config::GetInstance().Save();
        }
        int itemGlowIndex = FindCurrentSelectionIndex(ESP->MinimumItemRarity, glowValues, glowCount);
        ImGui::Text("Minimum Item Rarity:");
        if (ImGui::Combo("##Minimum Item Rarity", &itemGlowIndex, glowNames, glowCount)) {
            ESP->MinimumItemRarity = glowValues[itemGlowIndex];
            Config::GetInstance().Save();
        }

        ImGui::End();

        // Rendering
        ImGui::Render();
        const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w }; // rgba ->x,y,z,w
        g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, nullptr);
        g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
        ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());

        g_pSwapChain->Present(0, 0); // Present without vsync
    }

    // Cleanup
    ImGui_ImplDX11_Shutdown();
    ImGui_ImplWin32_Shutdown();
    ImGui::DestroyContext();

    CleanupDeviceD3D();
    ::DestroyWindow(hwnd);
    ::UnregisterClassW(wc.lpszClassName, wc.hInstance);

    return;
}

// Helper functions

bool CreateDeviceD3D(HWND hWnd)
{
    // Setup swap chain
    DXGI_SWAP_CHAIN_DESC sd;
    ZeroMemory(&sd, sizeof(sd));
    sd.BufferCount = 2;
    sd.BufferDesc.Width = 0;
    sd.BufferDesc.Height = 0;
    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    sd.BufferDesc.RefreshRate.Numerator = 60;
    sd.BufferDesc.RefreshRate.Denominator = 1;
    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    sd.OutputWindow = hWnd;
    sd.SampleDesc.Count = 1;
    sd.SampleDesc.Quality = 0;
    sd.Windowed = TRUE;
    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;

    UINT createDeviceFlags = 0;
    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
    D3D_FEATURE_LEVEL featureLevel;
    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
    HRESULT res = D3D11CreateDeviceAndSwapChain(nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext);
    if (res == DXGI_ERROR_UNSUPPORTED) // Try high-performance WARP software driver if hardware is not available.
        res = D3D11CreateDeviceAndSwapChain(nullptr, D3D_DRIVER_TYPE_WARP, nullptr, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext);
    if (res != S_OK)
        return false;

    CreateRenderTarget();
    return true;
}

void CleanupDeviceD3D()
{
    CleanupRenderTarget();
    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = nullptr; }
    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = nullptr; }
    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = nullptr; }
}

void CreateRenderTarget()
{
    ID3D11Texture2D* pBackBuffer;
    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, nullptr, &g_mainRenderTargetView);
    pBackBuffer->Release();
}

void CleanupRenderTarget()
{
    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = nullptr; }
}

// Forward declare message handler from imgui_impl_win32.cpp
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);

// Win32 message handler
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
        return true;

    switch (msg)
    {
    case WM_SIZE:
        if (wParam == SIZE_MINIMIZED)
            return 0;
        g_ResizeWidth = (UINT)LOWORD(lParam); // Queue resize
        g_ResizeHeight = (UINT)HIWORD(lParam);
        return 0;
    case WM_SYSCOMMAND:
        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
            return 0;
        break;
    case WM_DESTROY:
        ::PostQuitMessage(0);
        return 0;
    }
    return ::DefWindowProcW(hWnd, msg, wParam, lParam);
}