Display.cpp

#include "Display.h"
#include "Renderable.h" // including this here to avoid circular dependancies


    Display::Display(int w, int h, const char* windowTitle, SDL_Color backgroundColor)
	{
		title = windowTitle;
		this->backgroundColor = backgroundColor;

		w_ = w;
		h_ = h;


		window = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, 0);
		if (!window)
			SDL_LogError(0, "failed to create window");

		renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
		if (!renderer)
			SDL_LogError(0, "failed to create renderer");
	}

	Display::~Display()
	{
		SDL_DestroyWindow(window);
		SDL_DestroyRenderer(renderer);
		exit();
	}
	
	void Display::init()
	{
		SDL_Init(SDL_INIT_VIDEO < 0);
		IMG_Init(IMG_INIT_PNG);
		SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");

		TTF_Init();
	}

	void Display::exit()
	{
		TTF_Quit();
	}

	void Display::RenderAll()
	{
		renderList.sort([](Renderable* item1, Renderable* item2)
			{
				return item1->zOrder < item2->zOrder;
			});
		for (Renderable* item : renderList)
		{
			item->RenderCall(renderer);
		}
	}

	void Display::AddRenderable(Renderable* toAdd)
	{
		renderList.push_back(toAdd);
	}

	void Display::ProcessRender()
	{
		SDL_RenderPresent(renderer);
	}

	void Display::PrepareRender()
	{
		SDL_SetRenderDrawColor(renderer, backgroundColor.r, backgroundColor.g, backgroundColor.b, backgroundColor.a);
		SDL_RenderClear(renderer);
	}

	void Display::ClearRenderables()
	{
		renderList.clear();
	}