merge with niels/rendering

1 files changed, 41 insertions, 0 deletions

diff --git a/src/crepe/RenderSystem.cpp b/src/crepe/RenderSystem.cpp
new file mode 100644
index 0000000..6aae3bb
--- /dev/null
+++ b/src/crepe/RenderSystem.cpp
@@ -0,0 +1,41 @@
+
+
+#include "RenderSystem.h"
+#include "ComponentManager.h"
+#include "SdlContext.h"
+#include "api/Sprite.h"
+#include "api/Transform.h"
+#include "util/log.h"
+#include <cstddef>
+#include <functional>
+#include <vector>
+
+using namespace crepe;
+using namespace crepe::api;
+
+RenderSystem::RenderSystem() { dbg_trace(); }
+
+RenderSystem::~RenderSystem() { dbg_trace(); }
+
+RenderSystem& RenderSystem::get_instance(){
+	static RenderSystem instance;
+	return instance;
+}
+
+void RenderSystem::update() {
+
+	ComponentManager& mgr = ComponentManager::get_instance();
+	
+	std::vector<std::reference_wrapper<Sprite>> sprites = mgr.get_components_by_type<Sprite>();
+	std::vector<std::reference_wrapper<Transform>> transforms = mgr.get_components_by_type<Transform>();
+
+	SdlContext& render = SdlContext::get_instance();
+	render.clear_screen();
+
+	for (size_t i = 0; i < sprites.size(); ++i) {
+			render.draw(sprites[i].get(), transforms[i].get());
+	}
+
+	render.present_screen();
+
+}