feat: Add support for MOD files (lip sync, game saves)

src/system/resource/collection/erffile.cpp

@@ -28,12 +28,14 @@ namespace reone {
 namespace resource {
 
 static const int kSignatureSize = 8;
-static const char kSignature[] = "ERF V1.0";
+static const char kSignatureErf[] = "ERF V1.0";
+static const char kSignatureMod[] = "MOD V1.0";
 
-ErfFile::ErfFile() : BinaryFile(kSignatureSize, kSignature) {
+ErfFile::ErfFile() : BinaryFile(0, nullptr) {
 }
 
 void ErfFile::doLoad() {
+    checkSignature();
     ignore(8);
 
     _entryCount = readUint32();
@@ -47,6 +49,22 @@ void ErfFile::doLoad() {
     loadResources();
 }
 
+void ErfFile::checkSignature() {
+    if (_size < kSignatureSize) {
+        throw runtime_error("Invalid binary file size");
+    }
+    char buf[kSignatureSize];
+    _in->read(buf, kSignatureSize);
+
+    bool erf = strncmp(buf, kSignatureErf, kSignatureSize) == 0;
+    if (!erf) {
+        bool mod = strncmp(buf, kSignatureMod, kSignatureSize) == 0;
+        if (!mod) {
+            throw runtime_error("Invalid ERF file signature");
+        }
+    }
+}
+
 void ErfFile::loadKeys() {
     _keys.reserve(_entryCount);
     seek(_keysOffset);

src/system/resource/collection/erffile.h

@@ -54,6 +54,8 @@ private:
     std::vector<Resource> _resources;
 
     void doLoad() override;
+
+    void checkSignature();
     void loadKeys();
     Key readKey();
     void loadResources();

src/system/resource/types.h

@@ -34,6 +34,7 @@ enum class GameVersion {
 
 enum class ResourceType : uint16_t {
     Invalid = 0xffff,
+    Inventory = 0,
     Bmp = 1,
     Tga = 3,
     Wav = 4,
@@ -73,6 +74,7 @@ enum class ResourceType : uint16_t {
     DoorWalkmesh = 2052,
     PlaceableWalkmesh = 2053,
     Journal = 2056,
+    Mod = 2057,
     WaypointBlueprint = 2058,
     SoundSet = 2060,
     ScriptDebugger = 2064,

src/system/resource/util.cpp

@@ -30,6 +30,7 @@ namespace reone {
 namespace resource {
 
 static map<ResourceType, string> g_extByType = {
+    { ResourceType::Inventory, "inv" },
     { ResourceType::Bmp, "bmp" },
     { ResourceType::Tga, "tga" },
     { ResourceType::Wav, "wav" },
@@ -69,6 +70,7 @@ static map<ResourceType, string> g_extByType = {
     { ResourceType::DoorWalkmesh, "dwk" },
     { ResourceType::PlaceableWalkmesh, "pwk" },
     { ResourceType::Journal, "jrl" },
+    { ResourceType::Mod, "mod" },
     { ResourceType::WaypointBlueprint, "utw" },
     { ResourceType::SoundSet, "ssf" },
     { ResourceType::ScriptDebugger, "ndb" },

tools/tools.cpp

@@ -49,7 +49,7 @@ unique_ptr<Tool> getToolByPath(GameVersion version, const fs::path &path) {
         return make_unique<KeyTool>();
     } else if (ext == ".bif") {
         return make_unique<BifTool>();
-    } else if (ext == ".erf") {
+    } else if (ext == ".erf" || ext == ".mod" || ext == ".sav") {
         return make_unique<ErfTool>();
     } else if (ext == ".rim") {
         return make_unique<RimTool>();