Add logger class and HM compress flag

src/app/core/common.h

@@ -5,6 +5,7 @@
 
 #include <chrono>
 #include <cstdint>
+#include <fstream>
 #include <functional>
 #include <iostream>
 #include <memory>
@@ -56,6 +57,9 @@ class ExperimentFlags {
     // Log to the console.
     bool kLogToConsole = false;
 
+    // use the classic compression algorithm
+    bool kUseClassicCompression = false;
+
     // Overworld flags
     struct Overworld {
       // Load and render overworld sprites to the screen. Unstable.
@@ -235,6 +239,14 @@ class ImGuiIdIssuer {
   }
 };
 
+class Logger {
+ public:
+  static void log(std::string message) {
+    static std::ofstream fout("log.txt", std::ios::out | std::ios::app);
+    fout << message << std::endl;
+  }
+};
+
 std::string UppercaseHexByte(uint8_t byte, bool leading = false);
 std::string UppercaseHexWord(uint16_t word);
 std::string UppercaseHexLong(uint32_t dword);