WIP load XML

1 files changed, 78 insertions, 0 deletions

diff --git a/frontend/load_dungeon.cpp b/frontend/load_dungeon.cpp
new file mode 100644
index 0000000..ef8cb54
--- /dev/null
+++ b/frontend/load_dungeon.cpp
@@ -0,0 +1,78 @@
+#include <memory>
+#include <filesystem>
+#include <pugixml.hpp>
+#include <map>
+
+#include "backend/Location.h"
+#include "backend/LocationFactory.h"
+#include "backend/Dungeon.h"
+
+#include "load_dungeon.h"
+#include "Exception.h"
+#include "frontend/strings.h"
+
+using namespace std;
+using namespace pugi;
+
+unique_ptr<Dungeon> load_dungeon(const string & filename) {
+	unique_ptr<Dungeon> dungeon = make_unique<Dungeon>();
+
+	xml_document doc;
+
+	string canonical = filename;
+	if (canonical.starts_with("~/"))
+		canonical = getenv("HOME") + canonical.substr(1);
+	try {
+		canonical = filesystem::canonical(canonical);
+	} catch (...) {
+		throw Exception("Kon bestand niet vinden");
+	}
+
+	xml_parse_result result = doc.load_file(canonical.c_str());
+	if (!result)
+		throw Exception("Kon XML-bestand niet lezen");
+
+	xml_node locations = doc.child("locaties");
+	if (!locations)
+		throw Exception("XML-bestand mist een <locaties> tag");
+
+	LocationFactory factory;
+	struct TempData {
+		Location * location;
+		unsigned edges[4];
+	};
+	map<unsigned, TempData> temp_map;
+	for (xml_node & tag : locations) {
+		const char * name = tag.text().as_string();
+		const char * description = tag.child("beschrijving").text().as_string();
+
+		// vector<string> objects_hidden = split_string(tag.attribute("objectenverborgen").as_string(), ";");
+		// vector<string> objects_visible = split_string(tag.attribute("objectenzichtbaar").as_string(), ";");
+		// vector<string> enemies = split_string(tag.attribute("vijand").as_string(), ";");
+
+		Location * location = factory.create_location(name, description);
+		temp_map[tag.attribute("id").as_uint()] = {
+			.location = location,
+			.edges = {
+				tag.attribute("noord").as_uint(0),
+				tag.attribute("oost").as_uint(0),
+				tag.attribute("zuid").as_uint(0),
+				tag.attribute("west").as_uint(0),
+			},
+		};
+		dungeon->add_location(location);
+	}
+
+	// connect edges after creating all locations
+	for (auto & [here, temp] : temp_map) {
+		for (Direction direction : { NORTH, EAST, SOUTH, WEST }) {
+			unsigned there = temp.edges[direction];
+			if (temp.edges[direction] == 0) continue;
+			if (!temp_map.contains(there)) continue;
+			temp.location->set_exit(direction, temp_map[there].location);
+		}
+	}
+
+	return dungeon;
+}
+