Added in an initial test to blur the current screen for any pause actions, before doing a modal or new UI.

gui.cpp

@@ -29,6 +29,33 @@ using namespace std::chrono_literals;
 using namespace ftxui;
 using namespace components;
 
+const std::string modal_shader = R"(
+uniform sampler2D 	source;
+uniform sampler2D bloom;
+uniform vec2 		offsetFactor;
+uniform float darkness;
+
+void main()
+{
+	vec2 textureCoordinates = gl_TexCoord[0].xy;
+	vec4 color = vec4(0.0);
+	color += texture2D(source, textureCoordinates - 4.0 * offsetFactor) * 0.0162162162;
+	color += texture2D(source, textureCoordinates - 3.0 * offsetFactor) * 0.0540540541;
+	color += texture2D(source, textureCoordinates - 2.0 * offsetFactor) * 0.1216216216;
+	color += texture2D(source, textureCoordinates - offsetFactor) * 0.1945945946;
+	color += texture2D(source, textureCoordinates) * 0.2270270270;
+	color += texture2D(source, textureCoordinates + offsetFactor) * 0.1945945946;
+	color += texture2D(source, textureCoordinates + 2.0 * offsetFactor) * 0.1216216216;
+	color += texture2D(source, textureCoordinates + 3.0 * offsetFactor) * 0.0540540541;
+	color += texture2D(source, textureCoordinates + 4.0 * offsetFactor) * 0.0162162162;
+
+    vec4 sourceFragment = texture2D(source, gl_TexCoord[0].xy);
+    vec4 bloomFragment = texture2D(bloom, gl_TexCoord[0].xy);
+    gl_FragColor = color + sourceFragment - bloomFragment - darkness;
+}
+)";
+
+
 GUI::GUI(DinkyECS::World &world, Map& game_map) :
   $game_map(game_map),
   $log({{"Welcome to the game!"}}),
@@ -204,6 +231,9 @@ bool GUI::handle_ui_events() {
       } else if(KB::isKeyPressed(KB::L)) {
         auto &debug = $world.get_the<Debug>();
         debug.LIGHT = !debug.LIGHT;
+      } else if(KB::isKeyPressed(KB::I)) {
+        create_modal();
+        $show_modal = !$show_modal;
       } else if(KB::isKeyPressed(KB::P)) {
         auto &debug = $world.get_the<Debug>();
         debug.PATHS = !debug.PATHS;
@@ -227,6 +257,25 @@ bool GUI::handle_ui_events() {
   return event_happened;
 }
 
+void GUI::create_modal() {
+  println("CREATING MODAL");
+  auto &window = $renderer.$window;
+  auto size = window.getSize();
+
+  paused_texture.create(size.x, size.y);
+  paused_texture.update(window);
+  bool good = paused_shader.loadFromMemory(modal_shader, sf::Shader::Fragment);
+  paused_shader.setUniform("offsetFactor", sf::Glsl::Vec2{0.001f, 0.001f});
+  paused_shader.setUniform("darkness", 0.05f);
+  dbc::check(good, "shader could not be loaded");
+  paused_sprite.setTexture(paused_texture);
+  paused_sprite.setPosition(0,0);
+}
+
+void GUI::draw_modal() {
+  auto &window = $renderer.$window;
+  window.draw(paused_sprite, &paused_shader);
+}
 
 void GUI::run_systems() {
   auto player = $world.get_the<Player>();
@@ -251,12 +300,15 @@ void GUI::shake() {
 void GUI::render_scene() {
   $renderer.clear();
 
-  $map_view.render();
-  $renderer.draw($map_view);
-
-  $status_ui.render();
-  $renderer.draw($status_ui);
+  if($show_modal) {
+    draw_modal();
+  } else {
+    $map_view.render();
+    $renderer.draw($map_view);
 
+    $status_ui.render();
+    $renderer.draw($status_ui);
+  }
 
   $renderer.display();
 }

gui.hpp

@@ -50,6 +50,10 @@ class GUI {
   SoundManager $sounds;
   SFMLRender $renderer;
 
+  sf::Texture paused_texture;
+  sf::Sprite paused_sprite;
+  sf::Shader paused_shader;
+
 public:
   GUI(DinkyECS::World& world, Map& game_map);
   // disable copying
@@ -65,5 +69,7 @@ public:
   void save_world();
   void shake();
   void shutdown();
+  void create_modal();
+  void draw_modal();
   int main(bool run_once=false);
 };