Brought over a bunch of code from the roguelike and now will use it to generate a random map.

tests/levelmanager.cpp

@@ -0,0 +1,40 @@
+#include <catch2/catch_test_macros.hpp>
+#include <fmt/core.h>
+#include "map.hpp"
+#include "dinkyecs.hpp"
+#include "worldbuilder.hpp"
+#include "save.hpp"
+#include "systems.hpp"
+#include "spatialmap.hpp"
+#include "levelmanager.hpp"
+
+using namespace fmt;
+using std::string;
+
+TEST_CASE("basic level manager test", "[levelmanager]") {
+  LevelManager lm;
+
+  // starts off with one already but I need to change that
+  size_t level1 = lm.current_index();
+  size_t level2 = lm.create_level();
+
+  auto& test1_level = lm.get(level1);
+  auto& test2_level = lm.get(level2);
+
+  REQUIRE(test1_level.map->width() > 0);
+  REQUIRE(test1_level.map->height() > 0);
+  REQUIRE(test1_level.index == 0);
+
+  REQUIRE(test2_level.map->width() > 0);
+  REQUIRE(test2_level.map->height() > 0);
+  REQUIRE(test2_level.index == 1);
+
+  auto& cur_level = lm.current();
+  REQUIRE(cur_level.index == 0);
+
+  auto& next_level = lm.next();
+  REQUIRE(next_level.index == 1);
+
+  auto& prev_level = lm.previous();
+  REQUIRE(prev_level.index == 0);
+}