refactor: state into namespace

src/model.cpp

@@ -27,8 +27,8 @@ void Model::draw()
 	// Scale
 	model = glm::scale(model, scale_);
 
-	// Set the model matrix in State
-	State::model_matrix_ = model;
+	// Set the model matrix in state
+	state::model_matrix = model;
 
 	// Draw the mesh
 	mesh_->draw();