file.exists, ... completely nothrow

src/files/engine_paths.cpp

@@ -139,7 +139,7 @@ static fs::path toCanonic(fs::path path) {
     return path;
 }
 
-fs::path EnginePaths::resolve(std::string path) {
+fs::path EnginePaths::resolve(std::string path, bool throwErr) {
     size_t separator = path.find(':');
     if (separator == std::string::npos) {
         throw files_access_error("no entry point specified");
@@ -165,8 +165,11 @@ fs::path EnginePaths::resolve(std::string path) {
             }
         }
     }
+    if (throwErr) {
         throw files_access_error("unknown entry point '"+prefix+"'");
     }
+    return fs::path(filename);
+}
 
 ResPaths::ResPaths(fs::path mainRoot, std::vector<PathsRoot> roots) 
     : mainRoot(mainRoot), roots(roots) {

src/files/engine_paths.hpp

@@ -40,7 +40,7 @@ public:
 
     std::vector<fs::path> scanForWorlds();
 
-    fs::path resolve(std::string path);
+    fs::path resolve(std::string path, bool throwErr=true);
 };
 
 struct PathsRoot {

src/logic/scripting/lua/libfile.cpp

@@ -26,7 +26,7 @@ static fs::path resolve_path_soft(const std::string& path) {
     if (path.find(':') == std::string::npos) {
         return path;
     }
-    return resolve_path(path);
+    return engine->getPaths()->resolve(path, false);
 }
 
 static int l_file_find(lua_State* L) {