Fixed a bunch of random little bugs everywhere.

render.cpp

@@ -83,7 +83,6 @@ void SFMLRender::render_grid(const std::wstring &text, sf::Color default_fg, sf:
   float height_delta = 0;
   sf::Sprite &sprite = get_text_sprite(last_tile);
   const float start_x = x;
-  // BUG: get default_fg from panel too
   sf::Color cur_fg = default_fg;
   sf::Color cur_bg = default_bg;
 
@@ -230,6 +229,15 @@ void SFMLRender::draw(Panel &panel, float x_offset, float y_offset) {
   }
 }
 
+Point SFMLRender::mouse_position() {
+  sf::Vector2i pos = sf::Mouse::getPosition($window);
+
+  return {
+    size_t(pos.x / $ui_bounds.width),
+    size_t(pos.y / $ui_bounds.height)
+  };
+}
+
 void SFMLRender::init_terminal() {
 #if defined(_WIN64) || defined(_WIN32)
   _setmode(_fileno(stdout), _O_U16TEXT);