Subscenes

src/dawn/scene/components/ui/UICanvas.cpp

@@ -18,25 +18,7 @@ UICanvas * UICanvas::create(Scene *scene) {
 UICanvas::UICanvas(SceneItem *item) : SceneItemComponent(item) {
 }
 
-float_t UICanvas::getWidth() {
-  return this->getGame()->renderManager.getBackBuffer()->getWidth();
-}
-
-float_t UICanvas::getHeight() {
-  return this->getGame()->renderManager.getBackBuffer()->getHeight();
-}
-
-void UICanvas::onStart() {
-  this->getGame()->renderManager.getBackBuffer()->eventRenderTargetResized
-    .addListener(this, &UICanvas::onBackBufferResize)
-  ;
-}
-
-void UICanvas::onBackBufferResize(
-  RenderTarget *target,
-  float_t width,
-  float_t height
-) {
+void UICanvas::onRenderTargetResize(RenderTarget *target, float_t w, float_t h){
   auto it = this->children.begin();
   while(it != this->children.end()) {
     (*it)->updatePositions();
@@ -44,14 +26,55 @@ void UICanvas::onBackBufferResize(
   }
 }
 
+void UICanvas::setCamera(Camera *camera) {
+  assertTrue(camera != this->camera);
+  
+  if(this->camera != nullptr) {
+    this->camera->getRenderTarget()->eventRenderTargetResized.removeListener(
+      this, &UICanvas::onRenderTargetResize
+    );
+  }
+
+  this->camera = camera;
+  
+  if(this->camera != nullptr) {
+    this->camera->getRenderTarget()->eventRenderTargetResized.addListener(
+      this, &UICanvas::onRenderTargetResize
+    );
+  }
+}
+
+float_t UICanvas::getWidth() {
+  if(this->camera == nullptr) {
+    return this->getGame()->renderManager.getBackBuffer()->getWidth();
+  }
+  return this->camera->getRenderTarget()->getWidth();
+}
+
+float_t UICanvas::getHeight() {
+  if(this->camera == nullptr) {
+    return this->getGame()->renderManager.getBackBuffer()->getHeight();
+  }
+  return this->camera->getRenderTarget()->getHeight();
+}
+
+void UICanvas::onStart() {
+  if(this->camera == nullptr) {
+    auto camera = this->getScene()->findComponent<Camera>();
+    this->setCamera(camera);
+  }
+}
+
 UICanvas::~UICanvas() {
   auto it = this->children.begin();
   while(it != this->children.end()) {
     delete *it;
     ++it;
   }
-
-  this->getGame()->renderManager.getBackBuffer()->eventRenderTargetResized
-    .removeListener(this, &UICanvas::onBackBufferResize)
-  ;
+  
+  if(this->camera != nullptr) {
+    this->camera->getRenderTarget()->eventRenderTargetResized.removeListener(
+      this, &UICanvas::onRenderTargetResize
+    );
+  }
 }

src/dawn/scene/components/ui/UICanvas.hpp

@@ -6,6 +6,7 @@
 #pragma once
 #include "scene/SceneItemComponent.hpp"
 #include "display/RenderTarget.hpp"
+#include "scene/components/display/Camera.hpp"
 
 namespace Dawn {
   enum UIDrawType {
@@ -18,11 +19,9 @@ namespace Dawn {
 
   class UICanvas : public SceneItemComponent {
     protected:
-      void onBackBufferResize(
-        RenderTarget *target,
-        float_t width,
-        float_t height
-      );
+      Camera *camera = nullptr;
+
+      void onRenderTargetResize(RenderTarget *target, float_t w, float_t h);
 
     public:
       /**
@@ -45,6 +44,13 @@ namespace Dawn {
        */
       UICanvas(SceneItem *item);
 
+      /**
+       * Sets the camera used by the UI canvas.
+       * 
+       * @param camera Camera to set for the UI canvas.
+       */
+      void setCamera(Camera *camera);
+
       /**
        * Construct and append a UI item to this UI Canvas.
        *