clooneljump/src/texture.cpp

#include "texture.hpp"
#include "sdlerror.hpp"
#include "sdlmain.hpp"
#include <SDL2/SDL.h>
#include <stdexcept>
#include <cassert>

namespace cloonel {
	///------------------------------------------------------------------------
	///------------------------------------------------------------------------
	Texture::Texture (const std::string& parPath, SDLMain* parMain, bool parLoadNow) :
		m_path(parPath),
		m_texture(nullptr),
		m_sdlmain(parMain)
	{
		if (parLoadNow)
			Reload();
	}

	///------------------------------------------------------------------------
	///------------------------------------------------------------------------
	Texture::~Texture() noexcept {
		Destroy();
	}

	///------------------------------------------------------------------------
	///------------------------------------------------------------------------
	void Texture::Destroy() noexcept {
		if (m_texture) {
			SDL_DestroyTexture(m_texture);
			m_texture = nullptr;
		}
	}

	///------------------------------------------------------------------------
	///------------------------------------------------------------------------
	void Texture::Reload() {
		Destroy();
		SDL_Surface* surf = SDL_LoadBMP(m_path.c_str());
		if (nullptr == surf)
			throw std::runtime_error(GetFullErrorMessage(__PRETTY_FUNCTION__, m_path));

		m_texture = SDL_CreateTextureFromSurface(m_sdlmain->GetRenderer(), surf);
		SDL_FreeSurface(surf);
		if (m_texture)
			SDL_QueryTexture(m_texture, nullptr, nullptr, &m_width, &m_height);
	}

	///------------------------------------------------------------------------
	///------------------------------------------------------------------------
	void Texture::Render (int parX, int parY) {
		assert(IsLoaded());
		const SDL_Rect dest = { parX, parY, m_width, m_height };
		SDL_RenderCopy(m_sdlmain->GetRenderer(), m_texture, nullptr, &dest);
	}
} //namespace cloonel