Question regarding making classes that accept a variable...
Author
Currently, in my engine when you want to create a new light object for instance you would type:
this->Engine->sceneManager->sceneNode->nodeLight->createLight("Light1");
This is kinda long but what my parter in the project suggested we do is something along the lines of this:
this->Engine->sceneManager("Level1")->createLight("Light1");
Now, how do I make it so I can pass sceneManager the name of the level and then be able to select which function I want? I really have no idea...
Any help would be greatly appreciated :D
Join the World Wide Revolution:
You could make it like this:
So just make a function that returns a pointer to some other object and use a map to look-up the correct object (or preferably hash_map if you have one)
class Engine { Engine() { m_sceneMap["Level1"] = new SceneManager(plahplahplah); m_sceneMap["Level2"] = new SceneManager(blehblehbleh); } ~Engine() { //TODO: release mem yo lazy bum } SceneManager* getScene(const std::string& sceneName) { assert(m_sceneMap.find(sceneName) != m_sceneMap.end()); return m_sceneMap[sceneName]; } std::map<std::string, SceneManager*> m_sceneMap;};//now you can do:Engine e;e->getScene("Level1")->sceneNode->nodeLight->createLight("Light1"); So just make a function that returns a pointer to some other object and use a map to look-up the correct object (or preferably hash_map if you have one)
Wait a sec I think I kinda misunderstood the question..
But anyway. If you want to call
getScene("Level1")->xxx;
where xxx can be just about anything, you have no choice but to make a new class that indirects the function calls to the real functions (such as sceneNode->nodeLight->createLight()), and then getScene returns an instance of this auxiliary class.
But anyway. If you want to call
getScene("Level1")->xxx;
where xxx can be just about anything, you have no choice but to make a new class that indirects the function calls to the real functions (such as sceneNode->nodeLight->createLight()), and then getScene returns an instance of this auxiliary class.
maybe something like this..
Engine->AddLight("Level","Light1"
;
Engine::AddLight(...)
{
// do stuff here
sceneManager->createLight(...) // or what ever..
}
So you hide as much as possible of the stuff that
is goining on.
<Oze>
Engine->AddLight("Level","Light1"
;Engine::AddLight(...)
{
// do stuff here
sceneManager->createLight(...) // or what ever..
}
So you hide as much as possible of the stuff that
is goining on.
<Oze>
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