Testing is almost complete, but now I'm in the area where it's a lot of interaction and probably need mocks or a way to inject keys to the gui.

gui.cpp

@@ -52,10 +52,9 @@ GUI::GUI(DinkyECS::World &world, Map& game_map) :
 }
 
 void GUI::resize_map(int new_size) {
-  if($renderer.resize_grid(new_size, $map_view)) {
+  $renderer.resize_grid(new_size, $map_view);
     // set canvas to best size
-    $canvas = Canvas($map_view.width * 2, $map_view.height * 4);
+  $canvas = Canvas($map_view.width * 2, $map_view.height * 4);
-  }
 }
 
 void GUI::save_world() {

meson.build

@@ -32,6 +32,7 @@ runtests = executable('runtests', [
   'render.cpp',
   'pathing.cpp',
   'lights.cpp',
+  'systems.cpp',
   'worldbuilder.cpp',
   'tests/fsm.cpp',
   'tests/dbc.cpp',

render.cpp

@@ -44,7 +44,7 @@ sf::Sprite &SFMLRender::get_text_sprite(wchar_t tile) {
 }
 
 
-bool SFMLRender::resize_grid(int new_size, Panel &panel_out) {
+void SFMLRender::resize_grid(int new_size, Panel &panel_out) {
   auto glyph = $font.getGlyph($config.bg_tile, new_size, false);
   int view_x = std::ceil(($config.video_x - panel_out.x) / glyph.bounds.width);
   int view_y = std::ceil(($config.video_y - panel_out.y) / glyph.bounds.height);
@@ -57,7 +57,6 @@ bool SFMLRender::resize_grid(int new_size, Panel &panel_out) {
   $bg_sprite = get_text_sprite($config.bg_tile);
   $bg_bounds = $bg_sprite.getLocalBounds();
   panel_out.resize(view_x, view_y);
-  return true;
 }
 
 inline void configure_tile(const sf::Sprite &sprite, sf::FloatRect &sp_bounds,  sf::FloatRect bg_bounds, float &width_delta, float &height_delta) {

render.hpp

@@ -50,7 +50,7 @@ struct SFMLRender {
   SFMLRender(SFMLRender &other) = delete;
 
   sf::Sprite &get_text_sprite(wchar_t tile);
-  bool resize_grid(int new_size, Panel &panel_out);
+  void resize_grid(int new_size, Panel &panel_out);
   void render_grid(const std::wstring &text, sf::Color default_fg, sf::Color default_bg, float x, float y);
   void render_text(const std::wstring &text, sf::Color default_fg, sf::Color default_bg, float x, float y);
 

tests/render.cpp

@@ -2,9 +2,17 @@
 #include <fmt/core.h>
 #include "render.hpp"
 #include "panel.hpp"
+#include "map.hpp"
+#include "worldbuilder.hpp"
+#include "config.hpp"
+#include "components.hpp"
+#include "systems.hpp"
+#include "save.hpp"
 
 using namespace ftxui;
 using namespace fmt;
+using namespace components;
+using namespace lighting;
 using std::string;
 
 void run_renderer(SFMLRender &renderer, Panel &panel) {
@@ -15,11 +23,10 @@ void run_renderer(SFMLRender &renderer, Panel &panel) {
   renderer.draw(panel);
 }
 
-TEST_CASE("can render a text or grid panel", "[render]") {
+TEST_CASE("can render a text panel", "[render]") {
   SFMLRender renderer;
 
   Panel panel(0, 0, 20, 5);
-  Panel grid(200, 200, 20, 5, true);
 
   auto text_box = Renderer([]{
       return hbox({
@@ -29,10 +36,44 @@ TEST_CASE("can render a text or grid panel", "[render]") {
     });
 
   panel.set_renderer(text_box);
-  grid.set_renderer(text_box);
-
   run_renderer(renderer, panel);
-  run_renderer(renderer, grid);
+  renderer.close();
+}
+
+TEST_CASE("can render a text", "[render]") {
+  SFMLRender renderer;
+  DinkyECS::World world;
+
+  save::load_configs(world);
+  const auto& config = world.get_the<MapConfig>();
+
+  Panel map_view(0, 0, 20, 5, true);
+  Map map(20,20);
+  WorldBuilder builder(map);
+  builder.generate();
+
+  Player player{world.entity()};
+  world.set_the<Player>(player);
+  world.set<Tile>(player.entity, {config.PLAYER_TILE});
+  world.set<LightSource>(player.entity, {6,1});
+
+  world.set<Position>(player.entity, {map.place_entity(0)});
+
+  LightRender lights(map.width(), map.height(), map.limit());
+
+  Canvas map_canvas(map_view.width * 2, map_view.height * 4);
+
+  map_view.set_renderer(Renderer([&] {
+    System::draw_map(world, map, lights.lighting(), map_canvas, map_view.width, map_view.height);
+    return canvas(map_canvas);
+  }));
+
+  run_renderer(renderer, map_view);
+
+  for(int i = 2; i < 14; i++) {
+    renderer.resize_grid(i * 10, map_view);
+    run_renderer(renderer, map_view);
+  }
 
   renderer.close();
 }