GUECS now has a click_on function so you can programatically click on buttons for testing.

guecs.cpp

@@ -259,7 +259,7 @@ namespace guecs {
   bool UI::mouse(float x, float y, bool hover) {
     int action_count = 0;
 
-    $world.query<lel::Cell, Clickable>([&](auto ent, auto& cell, auto &clicked) {
+    $world.query<lel::Cell>([&](auto ent, auto& cell) {
       if((x >= cell.x && x <= cell.x + cell.w) &&
           (y >= cell.y && y <= cell.y + cell.h))
       {
@@ -275,11 +275,7 @@ namespace guecs {
 
         if(hover) return;
 
-        if(auto action_data = get_if<ActionData>(ent)) {
-          clicked.action(ent, action_data->data);
-        } else {
-          clicked.action(ent, {});
-        }
+        click_on(ent);
 
         action_count++;
       } else {
@@ -317,6 +313,27 @@ namespace guecs {
     }
   }
 
+  void UI::click_on(const std::string& name, bool required) {
+    auto ent = entity(name);
+
+    if(required) {
+      dbc::check(has<Clickable>(ent),
+          fmt::format("click_on required '{}' to exist but it doesn't", name));
+    }
+
+    click_on(ent);
+  }
+
+  void UI::click_on(DinkyECS::Entity ent) {
+    if(auto clicked = get_if<Clickable>(ent)) {
+      if(auto action_data = get_if<ActionData>(ent)) {
+        clicked->action(ent, action_data->data);
+      } else {
+        clicked->action(ent, {});
+      }
+    }
+  }
+
   void UI::show_label(string region, wstring content) {
     auto ent = entity(region);
 

guecs.hpp

@@ -155,6 +155,8 @@ namespace guecs {
       void init();
       void render(sf::RenderWindow& window);
       bool mouse(float x, float y, bool hover);
+      void click_on(const std::string& name, bool required=false);
+      void click_on(DinkyECS::Entity slot_id);
       void debug_layout(sf::RenderWindow& window);
 
       template <typename Comp>