farethh Temat założony przez niniejszego użytkownika |
C++ SFML" no appropriate default constructor available" » 2022-05-30 21:18:53 Witam Visual Studio wypisuje takie błędy: 1. Severity Code Description Project File Line Suppression State Error C2512 'Fruit': no appropriate default constructor available SFML D:\Programowanie\C++\VIsual Studio Projekty\SFML\5 Snake\Projekt\Game.cpp 40 2. Severity Code Description Project File Line Suppression State Error (active) E0291 no default constructor exists for class "Fruit" SFML D:\Programowanie\C++\VIsual Studio Projekty\SFML\5 Snake\Projekt\Game.cpp 40 3.Severity Code Description Project File Line Suppression State Message see declaration of 'Fruit' SFML D:\Programowanie\C++\VIsual Studio Projekty\SFML\5 Snake\Projekt\Fruit.h 10 main. cpp #include <iostream>
#include <ctime>
#include "Game.h"
int main()
{
srand( static_cast < unsigned >( time( NULL ) ) );
Game game;
while( game.running() )
{
game.update();
game.render();
}
return 0;
}
Fruit.h #pragma once
#include <SFML/Graphics.hpp>
#include <SFML/System.hpp>
#include <SFML/Window.hpp>
#include <SFML/Audio.hpp>
#include <SFML/Network.hpp>
#include <iostream>
class Fruit
{
private:
sf::Texture textureFruit;
sf::Sprite snakeFruit;
void initTexture();
public:
Fruit( const sf::RenderWindow & window );
virtual ~Fruit();
const sf::Sprite getSprite() const;
void randFruitPosition( const sf::RenderWindow & window );
void update();
void render( sf::RenderTarget * target );
};
Fruit.cpp #include "Fruit.h"
void Fruit::initTexture()
{
if( !textureFruit.loadFromFile( "fruit.png" ) )
{
std::cout << "Tekstura nie zaladowala sie";
}
this->snakeFruit.setTexture( textureFruit );
}
void Fruit::randFruitPosition( const sf::RenderWindow & window )
{
int x = window.getSize().x - this->snakeFruit.getGlobalBounds().width;
int y = window.getSize().y - this->snakeFruit.getGlobalBounds().height;
this->snakeFruit.setPosition( sf::Vector2f(
static_cast < float >( rand() % x ),
static_cast < float >( rand() % y )
)
);
}
Fruit::Fruit( const sf::RenderWindow & window )
{
this->initTexture();
this->randFruitPosition( window );
}
Fruit::~Fruit()
{
}
const sf::Sprite Fruit::getSprite() const
{
return this->snakeFruit;
}
void Fruit::update()
{
}
void Fruit::render( sf::RenderTarget * target )
{
target->draw( this->snakeFruit );
}
Snake.h #pragma once
#include <iostream>
#include <ctime>
#include <vector>
#include <sstream>
#include <SFML/Graphics.hpp>
#include <SFML/System.hpp>
#include <SFML/Window.hpp>
#include <SFML/Audio.hpp>
#include <SFML/Network.hpp>
class Snake
{
private:
sf::Texture textureHead;
sf::Sprite snakeHead;
sf::Texture textureTail;
sf::Sprite snakeTail;
float movementSpeed;
int taiLenght;
enum class direction { left, right, up, down };
direction dir = direction::right;
void initVariables();
void initTexture();
public:
Snake( float x = 400.f, float y = 300.f );
virtual ~Snake();
const sf::Sprite getSprite() const;
void updateInput();
void updateWindowBoundsCollision( const sf::RenderTarget * target );
void update( const sf::RenderTarget * target );
void render( sf::RenderTarget * target );
};
Snake.cpp #include "Snake.h"
void Snake::initVariables()
{
this->movementSpeed = 5.f;
this->snakeHead.setOrigin( snakeHead.getLocalBounds().width / 2, snakeHead.getLocalBounds().height / 2 );
this->taiLenght = 0.f;
}
void Snake::initTexture()
{
if( !textureHead.loadFromFile( "head.png" ) || !textureTail.loadFromFile( "tail.png" ) )
std::cout << "Tekstura nie zaladowala sie";
this->snakeHead.setTexture( textureHead );
this->snakeTail.setTexture( textureTail );
}
Snake::Snake( float x, float y )
{
this->snakeHead.setPosition( x, y );
this->initTexture();
this->initVariables();
}
Snake::~Snake()
{
}
const sf::Sprite Snake::getSprite() const
{
return this->snakeHead;
}
void Snake::updateInput()
{
if( sf::Keyboard::isKeyPressed( sf::Keyboard::A ) && this->dir != direction::right )
{
if( dir == direction::up )
this->snakeHead.rotate( - 90.f );
else if( dir == direction::down )
this->snakeHead.rotate( 90.f );
this->dir = direction::left;
}
if( sf::Keyboard::isKeyPressed( sf::Keyboard::D ) && this->dir != direction::left )
{
if( dir == direction::up )
this->snakeHead.rotate( 90.f );
else if( dir == direction::down )
this->snakeHead.rotate( - 90.f );
this->dir = direction::right;
}
if( sf::Keyboard::isKeyPressed( sf::Keyboard::W ) && this->dir != direction::down )
{
if( dir == direction::right )
this->snakeHead.rotate( - 90.f );
else if( dir == direction::left )
this->snakeHead.rotate( 90.f );
this->dir = direction::up;
}
if( sf::Keyboard::isKeyPressed( sf::Keyboard::S ) && this->dir != direction::up )
{
if( dir == direction::right )
this->snakeHead.rotate( 90.f );
else if( dir == direction::left )
this->snakeHead.rotate( - 90.f );
this->dir = direction::down;
}
switch( dir )
{
case direction::left:
this->snakeHead.move( - this->movementSpeed, 0.f );
break;
case direction::right:
this->snakeHead.move( this->movementSpeed, 0.f );
break;
case direction::up:
this->snakeHead.move( - 0.f, - this->movementSpeed );
break;
case direction::down:
this->snakeHead.move( - 0.f, this->movementSpeed );
break;
}
}
void Snake::updateWindowBoundsCollision( const sf::RenderTarget * target )
{
if( this->snakeHead.getGlobalBounds().left <= 0.f )
{
this->snakeHead.setPosition( target->getSize().x - this->snakeHead.getGlobalBounds().width, this->snakeHead.getGlobalBounds().top );
this->snakeHead.move( 0.f, 16.f );
}
if( this->snakeHead.getGlobalBounds().left + this->snakeHead.getGlobalBounds().width >= 800 )
{
this->snakeHead.setPosition( 17.f, this->snakeHead.getGlobalBounds().top );
this->snakeHead.move( 0.f, 16.f );
}
if( this->snakeHead.getGlobalBounds().top <= 0.f )
{
this->snakeHead.setPosition( this->snakeHead.getGlobalBounds().left, target->getSize().y - this->snakeHead.getGlobalBounds().height );
this->snakeHead.move( 16.f, 0.f );
}
if( this->snakeHead.getGlobalBounds().top + this->snakeHead.getGlobalBounds().height >= target->getSize().y )
{
this->snakeHead.setPosition( this->snakeHead.getGlobalBounds().left, 17.f );
this->snakeHead.move( 16.f, 0.f );
}
}
void Snake::update( const sf::RenderTarget * target )
{
this->updateInput();
this->updateWindowBoundsCollision( target );
}
void Snake::render( sf::RenderTarget * target )
{
target->draw( this->snakeHead );
}
Game.h #pragma once
#include "Snake.h"
#include "Fruit.h"
class Game
{
private:
sf::VideoMode videoMode;
sf::RenderWindow * window;
sf::Event sfmlEvent;
bool endGame;
Snake snake;
Fruit fruit;
int points = 0;
sf::Font font;
sf::Text guiText;
sf::Text endGameText;
void initWindow();
void initVariables();
void initFonts();
void initText();
public:
Game();
~Game();
const bool & getEndGame() const;
const bool running() const;
void pollEvents();
void spawnFruit( const sf::RenderWindow & window );
void updatePlayer();
void updateCollison();
void updateGui();
void update();
void renderGui( sf::RenderTarget * target );
void render();
};
Game.cpp #include "Game.h"
void Game::initWindow()
{
this->videoMode = sf::VideoMode( 800, 600 );
this->window = new sf::RenderWindow( this->videoMode, "GAME 2", sf::Style::Close | sf::Style::Titlebar );
this->window->setFramerateLimit( 60 );
this->points = 0;
}
void Game::initVariables()
{
this->endGame = false;
}
void Game::initFonts()
{
if( !this->font.loadFromFile( "Minecraft.ttf" ) )
{
std::cout << "Nie udalo wczytac sie czcionki";
}
}
void Game::initText()
{
this->guiText.setFont( this->font );
this->guiText.setFillColor( sf::Color::White );
this->guiText.setCharacterSize( 26 );
this->endGameText.setFont( this->font );
this->endGameText.setFillColor( sf::Color::Red );
this->endGameText.setCharacterSize( 60 );
this->endGameText.setPosition( sf::Vector2f( 165, 250 ) );
this->endGameText.setString( "YOU ARE DEAD" );
}
Game::Game()
{
this->initWindow();
this->initVariables();
this->initFonts();
this->initText();
}
Game::~Game()
{
delete this->window;
}
const bool & Game::getEndGame() const
{
return this->endGame;
}
const bool Game::running() const
{
return this->window->isOpen() ;
}
void Game::pollEvents()
{
while( this->window->pollEvent( this->sfmlEvent ) )
{
switch( this->sfmlEvent.type )
{
case sf::Event::Closed:
this->window->close();
break;
case sf::Event::KeyPressed:
if( this->sfmlEvent.key.code == sf::Keyboard::Escape )
this->window->close();
break;
}
}
}
void Game::spawnFruit( const sf::RenderWindow & window )
{
this->fruit.randFruitPosition( window );
}
void Game::updatePlayer()
{
this->snake.update( this->window );
}
void Game::updateCollison()
{
if( this->snake.getSprite().getGlobalBounds().intersects( this->fruit.getSprite().getGlobalBounds() ) )
{
this->points++;
this->fruit.randFruitPosition( * this->window );
}
}
void Game::updateGui()
{
std::stringstream ss;
ss << "Points " << this->points << "\n";
this->guiText.setString( ss.str() );
}
void Game::update()
{
this->pollEvents();
if( this->endGame == false )
{
this->spawnFruit( * this->window );
this->updatePlayer();
this->updateCollison();
this->updateGui();
}
}
void Game::renderGui( sf::RenderTarget * target )
{
target->draw( this->guiText );
}
void Game::render()
{
this->window->clear();
this->snake.render( this->window );
this->fruit.render( this->window );
this->renderGui( this->window );
if( this->endGame )
{
this->window->clear( sf::Color::Black );
this->window->draw( this->endGameText );
}
this->window->display();
}
|
|
pekfos |
» 2022-05-30 22:36:49 Fruit nie ma domyślnego konstruktora. Musisz wywołać konstruktor Fruit w konstruktorze Game.
Niepotrzebnie piszesz wszędzie this->. |
|
farethh Temat założony przez niniejszego użytkownika |
» 2022-06-05 23:54:58 A jak przykładowo mógłbym go zrobić? |
|
DejaVu |
» 2022-06-06 09:34:19 |
|
farethh Temat założony przez niniejszego użytkownika |
» 2022-06-09 16:13:09 Przeczytałem cały artykuł i nadal nie ograniam co mam zrobić |
|
pekfos |
» 2022-06-09 18:24:44 Chodzi o ten zapis gdzie w konstruktorze po dwukropku inicjalizujesz pola w klasie. Gdy typ pola klasy ma konstruktory z parametrami, to jest jedyny sposób na wywołanie konstruktora innego niż domyślny. W tym wypadku: Game::Game()
: videoMode( 800, 600 )
, window( new sf::RenderWindow( this->videoMode, "GAME 2", sf::Style::Close | sf::Style::Titlebar ) )
, fruit( * window )
{
this->initWindow(); this->initVariables();
this->initFonts();
this->initText();
} Pola klasy są tworzone w kolejności w jakiej są zdefiniowane z definicji klasy. W tym wypadku kolejność masz poprawną. Okno trzeba też utworzyć w tym miejscu, by istniało w momencie tworzenia fruit. W przeciwnym razie window byłoby jeszcze niezainicjalizowanym wskaźnikiem. Na dobrą sprawę randFruitPosition() mogłeś nie wywoływać w konstruktorze, wtedy nie byłoby problemu z przekazywaniem tam obiektu okna. |
|
farethh Temat założony przez niniejszego użytkownika |
» 2022-06-09 18:58:39 Dobra, wielkie dzięki za pomoc.
Errory z konstrukotrem zniknęły, ale niestety pojawiły się inne:
Game.h 15 linia:
Severity Code Description Project File Line Suppression State
Error C3646 'fruit': unknown override specifier SFML D:\Programowanie\C++\VIsual Studio Projekty\SFML\5 Snake\Projekt\Game.h 15
Severity Code Description Project File Line Suppression State
Error C4430 missing type specifier - int assumed. Note: C++ does not support default-int SFML D:\Programowanie\C++\VIsual Studio Projekty\SFML\5 Snake\Projekt\Game.h 15
wiecie jak to naprawic? |
|
pekfos |
» 2022-06-09 20:12:52 Jak wygląda kod we wskazanym miejscu? |
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