implement sprite replay

2 files changed, 23 insertions, 2 deletions

diff --git a/src/crepe/api/Sprite.cpp b/src/crepe/api/Sprite.cpp
index 0107c7b..2919857 100644
--- a/src/crepe/api/Sprite.cpp
+++ b/src/crepe/api/Sprite.cpp
@@ -19,3 +19,18 @@ Sprite::Sprite(game_object_id_t id, const Asset & texture, const Sprite::Data &
 }
 
 Sprite::~Sprite() { dbg_trace(); }
+
+unique_ptr<Component> Sprite::save() const {
+	return unique_ptr<Component>(new Sprite(*this));
+}
+
+void Sprite::restore(const Component & snapshot) {
+	*this = static_cast<const Sprite &>(snapshot);
+}
+
+Sprite & Sprite::operator=(const Sprite & snapshot) {
+	this->active = snapshot.active;
+	this->data = snapshot.data;
+	this->mask = snapshot.mask;
+	return *this;
+}
diff --git a/src/crepe/api/Sprite.h b/src/crepe/api/Sprite.h
index a3fc319..3565bed 100644
--- a/src/crepe/api/Sprite.h
+++ b/src/crepe/api/Sprite.h
@@ -42,10 +42,10 @@ public:
 		FlipSettings flip;
 
 		//! Layer sorting level of the sprite
-		const int sorting_in_layer = 0;
+		int sorting_in_layer = 0;
 
 		//! Order within the sorting layer
-		const int order_in_layer = 0;
+		int order_in_layer = 0;
 
 		/**
 		 * \brief width and height of the sprite in game units
@@ -119,6 +119,12 @@ private:
 	//! Render area of the sprite this will also be adjusted by the AnimatorSystem if an Animator
 	// object is present in GameObject. this is in sprite pixels
 	Rect mask;
+
+protected:
+	virtual std::unique_ptr<Component> save() const;
+	Sprite(const Sprite &) = default;
+	virtual void restore(const Component & snapshot);
+	virtual Sprite & operator=(const Sprite &);
 };
 
 } // namespace crepe