Initial commit: DayZ memory C++ port with DMA backend and overlay

src/Config.h

@@ -0,0 +1,66 @@
+#pragma once
+#include <map>
+#include <string>
+
+// -------------------------------------------------------------------------
+// OverlayConfig — all user-editable runtime settings.
+// Persisted as config/overlay.json (nlohmann/json).
+// -------------------------------------------------------------------------
+
+struct OverlayConfig {
+    // ---- ESP toggles ----
+    bool showPlayers  = true;
+    bool showAnimals  = true;
+    bool showZombies  = true;
+    bool showItems    = true;
+    bool showBox      = true;   // bounding box around players
+    bool showSkeleton = true;   // bone skeleton lines
+
+    // ---- Extra ESP options ----
+    bool showHeadDot      = false;  // dot at head bone for players/zombies
+    bool showCorpses      = false;  // show dead players/zombies (dimmed grey)
+    bool showWeapon       = true;   // item-in-hands label below player name
+    bool showHealthBar    = true;   // vertical health bar to the right of the box
+    bool showHealthNumber = false;  // numeric "xxx/100" beside the bar
+
+    // ---- Draw-distance limits (metres) ----
+    float playerMaxDist = 1000.0f;
+    float animalMaxDist = 1000.0f;
+    float zombieMaxDist = 500.0f;
+    float itemMaxDist   = 200.0f;
+
+    // ---- Per-category item toggles (key = filterKey from item_filters.json) ----
+    // Missing key → enabled by default.
+    std::map<std::string, bool> itemCategories;
+
+    // ---- Overlay resolution override ----
+    // 0 = auto-detect from GetSystemMetrics (default behaviour).
+    // Set both to your MONITOR (display) resolution, not the game render resolution.
+    int overlayWidth  = 0;
+    int overlayHeight = 0;
+
+    // ---- Stretched resolution support ----
+    // renderWidth / renderHeight: the resolution DayZ actually renders at
+    // (e.g. 1280x960 when running 4:3 stretched on a 1920x1080 monitor).
+    // Set to 0 to disable (assumes render == display).
+    //
+    // stretchToFill: true  = GPU stretches the render to fill the monitor (no black bars).
+    //               false = game maintains aspect ratio with letterbox/pillarbox bars.
+    //
+    // overlayWidth/Height should ALWAYS equal your monitor resolution regardless of mode.
+    int  renderWidth   = 0;
+    int  renderHeight  = 0;
+    bool stretchToFill = true;
+
+    // ---- Web radar ----
+    std::string webBindAddress = "0.0.0.0";
+    int         webPort        = 7777;
+    std::string webPassword    = "";
+
+    // ------------------------------------------------------------------
+    // Load from path (returns default-constructed config on any error).
+    static OverlayConfig Load(const std::string& path);
+
+    // Save to path (creates parent directories if needed).
+    void Save(const std::string& path) const;
+};