Finally can pick things up, but it's really bad so far. Need a bunch of refactoring in how the collision system works, and make it so collision and maps can have multiple entities in the same square.

gui/main_ui.hpp

@@ -35,6 +35,7 @@ namespace gui {
     Point plan_move(int dir, bool strafe);
     void abort_plan();
     void update_level(GameLevel level);
+    DinkyECS::Entity camera_aim();
 
     void init();
     void render();