feat: add play mode pause resume and step controls

editor/src/Core/PlaySessionController.cpp

@@ -30,6 +30,20 @@ void PlaySessionController::Attach(IEditorContext& context) {
                 PausePlay(context);
             });
     }
+
+    if (m_playResumeRequestedHandlerId == 0) {
+        m_playResumeRequestedHandlerId = context.GetEventBus().Subscribe<PlayModeResumeRequestedEvent>(
+            [this, &context](const PlayModeResumeRequestedEvent&) {
+                ResumePlay(context);
+            });
+    }
+
+    if (m_playStepRequestedHandlerId == 0) {
+        m_playStepRequestedHandlerId = context.GetEventBus().Subscribe<PlayModeStepRequestedEvent>(
+            [this, &context](const PlayModeStepRequestedEvent&) {
+                StepPlay(context);
+            });
+    }
 }
 
 void PlaySessionController::Detach(IEditorContext& context) {
@@ -49,6 +63,16 @@ void PlaySessionController::Detach(IEditorContext& context) {
         context.GetEventBus().Unsubscribe<PlayModePauseRequestedEvent>(m_playPauseRequestedHandlerId);
         m_playPauseRequestedHandlerId = 0;
     }
+
+    if (m_playResumeRequestedHandlerId != 0) {
+        context.GetEventBus().Unsubscribe<PlayModeResumeRequestedEvent>(m_playResumeRequestedHandlerId);
+        m_playResumeRequestedHandlerId = 0;
+    }
+
+    if (m_playStepRequestedHandlerId != 0) {
+        context.GetEventBus().Unsubscribe<PlayModeStepRequestedEvent>(m_playStepRequestedHandlerId);
+        m_playStepRequestedHandlerId = 0;
+    }
 }
 
 void PlaySessionController::Update(IEditorContext& context, float deltaTime) {
@@ -118,5 +142,25 @@ bool PlaySessionController::PausePlay(IEditorContext& context) {
     return true;
 }
 
+bool PlaySessionController::ResumePlay(IEditorContext& context) {
+    if (context.GetRuntimeMode() != EditorRuntimeMode::Paused || !m_runtimeLoop.IsRunning()) {
+        return false;
+    }
+
+    m_runtimeLoop.Resume();
+    context.SetRuntimeMode(EditorRuntimeMode::Play);
+    context.GetEventBus().Publish(PlayModeResumedEvent{});
+    return true;
+}
+
+bool PlaySessionController::StepPlay(IEditorContext& context) {
+    if (context.GetRuntimeMode() != EditorRuntimeMode::Paused || !m_runtimeLoop.IsRunning()) {
+        return false;
+    }
+
+    m_runtimeLoop.StepFrame();
+    return true;
+}
+
 } // namespace Editor
 } // namespace XCEngine