tdgame test branch by gemini.

util/tdgame/game_utils.hpp

@@ -0,0 +1,68 @@
+#ifndef GAME_UTILS_HPP
+#define GAME_UTILS_HPP
+
+#include <string>
+#include <vector>
+#include <sstream>
+#include <fstream>
+#include <map>
+#include <iostream>
+#include <algorithm>
+#include "../../eigen/Eigen/Dense"
+
+using Vector3f = Eigen::Vector3f;
+
+class FileUtils {
+public:
+    static std::string readFile(const std::string& path) {
+        std::ifstream file(path);
+        if (!file.is_open()) {
+            std::cerr << "Failed to open file: " << path << std::endl;
+            return "{}"; // Return empty JSON obj on fail
+        }
+        std::stringstream buffer;
+        buffer << file.rdbuf();
+        return buffer.str();
+    }
+};
+
+class SimpleJsonParser {
+public:
+    static std::map<std::string, std::string> parseDepth1(const std::string& raw) {
+        std::map<std::string, std::string> result;
+        std::string clean = raw;
+        // Remove braces and quotes
+        clean.erase(std::remove(clean.begin(), clean.end(), '{'), clean.end());
+        clean.erase(std::remove(clean.begin(), clean.end(), '}'), clean.end());
+        clean.erase(std::remove(clean.begin(), clean.end(), '\"'), clean.end());
+        
+        std::stringstream ss(clean);
+        std::string segment;
+        while(std::getline(ss, segment, ',')) {
+            size_t colonPos = segment.find(':');
+            if(colonPos != std::string::npos) {
+                std::string key = segment.substr(0, colonPos);
+                std::string val = segment.substr(colonPos + 1);
+                
+                // Trim key
+                size_t first = key.find_first_not_of(" \t\n\r");
+                size_t last = key.find_last_not_of(" \t\n\r");
+                if (first != std::string::npos) key = key.substr(first, (last - first + 1));
+
+                // Trim val
+                first = val.find_first_not_of(" \t\n\r");
+                last = val.find_last_not_of(" \t\n\r");
+                if (first != std::string::npos) val = val.substr(first, (last - first + 1));
+
+                result[key] = val;
+            }
+        }
+        return result;
+    }
+};
+
+
+
+
+#endif
+