CachedTexture.h
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CachedTexture.h
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	#ifndef CACHEDTEXTURE_H
	#define CACHEDTEXTURE_H

	#include "Render.h"

	//A class to cache textures that display stuff that is updated regularly
	template <typename T>
	class CachedTexture
	{
	private:
	T id;
	TexturePtr tex;
	public:
	CachedTexture() {}
	TexturePtr& getTexture(){
	return tex;
	}

	SDL_Texture* get(){
	return tex.get();
	}

	const T& getId() const {
	return id;
	}

	// Check if the texture exists.
	bool exists() {
	return tex.get() != nullptr;
	}

	// Check if the contained texture has to be updated.
	bool needsUpdate(const T& id){
	if (this->id!=id \|\| !tex) {
	return true;
	} else {
	return false;
	}
	}

	//Update the contained texture with a new id and texture.
	void update(T id, TexturePtr&& texture) {
	this->id = id;
	this->tex = std::move(texture);
	}
	};

	#endif // CACHEDTEXTURE_H