ofxAddons
A generic scene-based entity component data structure for openFrameworks
Forks
Forks pushed to more recently than m1keall1son/ofxMediaSystem itself, plus any admin-confirmed fork with commits of its own — worth checking if you're hitting issues with the original.
README
ofxMediaSystem Overview
ofxMediaSystem is a flexible data structure for generically composing data and logic in openFrameworks applications that require many different states of operation.Installation
there are no other dependencies. Just use as indicated by the Wiki``
c++ using namespace mediasystem; SceneManager mSceneManager; ... //create new scene std::shared_ptr<Scene> scene = mSceneManager.createScene<Scene>("myScene");
//create an empty entity EntityHandle entityHandle = scene->createEntity();
//entities and their components are accessed through weak_ptr's //the user should not store the contained shared_ptrs directly auto entity = entityHandle.lock();
//entities have an interface for scene graphing and 3D transformations entity->setPosition(windowCenter.x, windowCenter.y, 0.f);
//define a new component struct SomeData { SomeData(float _speed):hitCount(0),speed(_speed){} int hitCount; float speed; };
float speed = 10.f; //add a data component to the entity, this returns a handle to access that data std::weak_ptr<SomeData> componentHandle = entity->createComponent<SomeData>(speed);
//there's a default method for drawing things to the screen by creating a LayeredRenderer system. scene->createSystem<LayeredRenderer>(*scene);
//the LayeredRenderer will draw component wrapped in a Drawable<typename T> template. //the template argument must fit the drawable concept by having a "void draw()" method struct DrawText { DrawText(std::string m, glm::vec2 pos):message(std::move(m)),position(std::move(pos)){} std::string message; glm::vec2 position; void draw(){ ofDrawBitMappedString(message, position.x, position.y); } };
//lets have this component put a message on screen entity->createComponent<mediasystem::Drawable<DrawText>>("Hello World", glm::vec2(10,10));
mSceneManager.initScenes(); //will initialize ALL scenes mSceneManager.changeSceneTo(scene); //will cause scene to 'transition in' ... //will emit update event in the current scene //a system could tie into that event to update the state of SomeData components mSceneManager.update();
... //will emit draw event in the current scene, which the LayeredRenderer will use to draw our text to screen mSceneManager.draw(); ``