added missing files

src/files/engine_paths.cpp

@@ -0,0 +1,58 @@
+#include "engine_paths.h"
+
+#include <filesystem>
+#include <sstream>
+#include "../typedefs.h"
+
+#define SCREENSHOTS_FOLDER "screenshots"
+
+namespace fs = std::filesystem;
+using std::string;
+using fs::path;
+
+path EnginePaths::getUserfiles() const {
+	return userfiles;
+}
+
+path EnginePaths::getResources() const {
+	return resources;
+}
+
+path EnginePaths::getScreenshotFile(string ext) {
+	path folder = SCREENSHOTS_FOLDER;
+	if (!fs::is_directory(folder)) {
+		fs::create_directory(folder);
+	}
+
+	auto t = std::time(nullptr);
+    auto tm = *std::localtime(&t);
+
+	const char* format = "%Y-%m-%d_%H-%M-%S";
+	std::stringstream ss;
+	ss << std::put_time(&tm, format);
+	string datetimestr = ss.str();
+
+	path filename = folder/path("screenshot-"+datetimestr+"."+ext);
+	uint index = 0;
+	while (fs::exists(filename)) {
+		filename = folder/path("screenshot-"+datetimestr+"-"+std::to_string(index)+"."+ext);
+		index++;
+	}
+	return filename;
+}
+
+path EnginePaths::getWorldsFolder() {
+    return path("worlds");
+}
+
+bool EnginePaths::isWorldNameUsed(string name) {
+	return fs::exists(EnginePaths::getWorldsFolder()/fs::u8path(name));
+}
+
+void EnginePaths::setUserfiles(path folder) {
+	this->userfiles = folder;
+}
+
+void EnginePaths::setResources(path folder) {
+	this->resources = folder;
+}