Add in the tests from finding the bug in spatial map.

tests/map.cpp

@@ -6,7 +6,6 @@
 #include "levelmanager.hpp"
 #include "systems.hpp"
 
-
 using namespace fmt;
 using namespace nlohmann;
 using std::string;

tests/spatialmap.cpp

@@ -131,7 +131,11 @@ TEST_CASE("check all diagonal works", "[collision]") {
 
       // move the enemy to a new spot around the player
       Point move_to = {enemy_at.x + x, enemy_at.y + y};
-      collider.move(enemy_at, move_to, enemy);
+
+      if(!collider.occupied(move_to)) {
+        collider.move(enemy_at, move_to, enemy);
+      }
+
       enemy_at = move_to;
     }
   }