sfml 相关问题

抱歉写了糟糕的代码，我是 cpp 新手所以问题是无论我做什么，精灵位置都不会改变。我无法弄清楚。 #包括\ #包括\ 抱歉写了糟糕的代码，我是 cpp 新手所以问题是无论我做什么，精灵位置都没有改变。我无法弄清楚。 #include \<SFML/Graphics.hpp\> #include \<vector\> #include \<string\> #include\<iostream\> #include \<unistd.h\> int main() { // Create a window sf::RenderWindow window(sf::VideoMode(800, 800), "Chess by devtony"); sf::RectangleShape board\[8\]\[8\]; sf::Color blck(128,128,128); sf::Color wth(255,204,204); for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { board[i][j].setPosition(i*100,j*100); board[i][j].setSize(sf::Vector2f(100, 100)); board[i][j].setFillColor((i + j) % 2 == 0 ? wth : blck); } } sf::Texture pieces\[4\]\[8\]; for (int i = 0; i \< 8; i++) { if (!pieces\[1\]\[i\].loadFromFile("assets/w_pawn.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } } //rooks for (int i = 0; i \< 8; i++) { if (!pieces\[2\]\[i\].loadFromFile("assets/b_pawn.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } } if (!pieces\[0\]\[0\].loadFromFile("assets/w_rook.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[0\]\[7\].loadFromFile("assets/w_rook.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[0\].loadFromFile("assets/b_rook.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[7\].loadFromFile("assets/b_rook.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } //bishop if (!pieces\[0\]\[2\].loadFromFile("assets/w_bishop.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[0\]\[5\].loadFromFile("assets/w_bishop.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[2\].loadFromFile("assets/b_bishop.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[5\].loadFromFile("assets/b_bishop.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } //horse if (!pieces\[0\]\[1\].loadFromFile("assets/w_knight.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[0\]\[6\].loadFromFile("assets/w_knight.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[1\].loadFromFile("assets/b_knight.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[6\].loadFromFile("assets/b_knight.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } //queen if (!pieces\[0\]\[4\].loadFromFile("assets/w_queen.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[0\]\[3\].loadFromFile("assets/w_king.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[3\].loadFromFile("assets/b_queen.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } if (!pieces\[3\]\[4\].loadFromFile("assets/b_king.png")) { std::cout \<\< "Error loading image!" \<\< std::endl; return EXIT_FAILURE; } //king // Create a sprite sf::Sprite sprites\[4\]\[8\]; for (int i = 0; i \< 4; i++) { for (int j = 0; j \< 8; j++) { sprites\[i\]\[j\].setTexture(pieces\[i\]\[j\]); sprites\[i\]\[j\].setScale(0.5,0.5); sprites\[i\]\[j\].setOrigin(50,50); } } // Flag to check if a piece is selected bool isPieceSelected = false; sf::Sprite\* selectedPiece = nullptr; sf::Vector2f clickOffset; // Main loop while (window.isOpen()) { sf::Event event; while (window.pollEvent(event)) { if (event.type == sf::Event::Closed) { window.close(); } if (event.type == sf::Event::MouseButtonPressed && event.mouseButton.button == sf::Mouse::Left) { for (int i = 0; i < 4; i++) { for (int j = 0; j < 8; j++) { if (sprites[i][j].getGlobalBounds().contains(window.mapPixelToCoords(sf::Mouse::getPosition(window)))) { isPieceSelected = true; selectedPiece = &sprites[i][j]; clickOffset = window.mapPixelToCoords(sf::Mouse::getPosition(window)) - selectedPiece->getPosition(); break; } } if (isPieceSelected) break; } } else if (event.type == sf::Event::MouseMoved && isPieceSelected) { sf::Vector2f newPosition = window.mapPixelToCoords(sf::Mouse::getPosition(window)) - clickOffset; std::cout \<\< "New Position: " \<\< newPosition.x \<\< ", " \<\< newPosition.y \<\< std::endl; selectedPiece-\>setPosition(newPosition.x,newPosition.y); } else if (event.type == sf::Event::MouseButtonReleased && event.mouseButton.button == sf::Mouse::Left) { isPieceSelected = false; } } // Clear window window.clear(); for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { window.draw(board[i][j]); } } for (int i = 0; i < 8; i++) { for (int j = 0; j < 4; j++) { if (j<2) { sprites[j][i].setPosition(sf::Vector2f(100*(i+1)-50,100*(j+1)-50)); }else{ sprites[j][i].setPosition(sf::Vector2f(100*(i+1)-50,100*(j+5)-50)); } } } for (int i = 0; i < 4; i++) { for (int j = 0; j < 8; j++) { window.draw(sprites[i][j]); } } // Draw the sprite // Display window contents window.display(); } return 0; } 我正在使用 C++ 中的 SFML 开发国际象棋游戏，并且遇到了拖放精灵的问题。我实现了一项功能，允许玩家通过在棋盘上单击并拖动棋子来移动棋子。然而，精灵并没有像预期那样随着鼠标拖动而移动。单击时会正确检测到精灵，并且 isPieceSelected 标志设置为 true。计算 clickOffset 是为了保持相对于鼠标光标的正确位置。但是，当我尝试拖动精灵时，它不跟随鼠标。窗口已聚焦，并且没有设置可能影响响应能力的帧速率限制。我尝试过使用 setPosition 和 move 方法来更新精灵的位置，但都没有解决问题。尽管没有错误，但精灵根本没有移动，并且程序编译成功。您的问题是您在窗口循环的每次迭代中将棋子的位置设置在其起始位置。这发生在循环中： for (int i = 0; i < 8; i++) { for (int j = 0; j < 4; j++) { if (j < 2) { sprites[j][i].setPosition(sf::Vector2f(100 * (i + 1) - 50, 100 * (j + 1) - 50)); } else { sprites[j][i].setPosition(sf::Vector2f(100 * (i + 1) - 50, 100 * (j + 5) - 50)); } } } 这可以通过引入一个初始化函数来轻松解决，该函数接受精灵矩阵并仅设置其原始位置一次。创建一个这样的函数： void setPiecesInStartingPosition(sf::Sprite(&sprites)[4][8]) 并将初始化代码移至函数中，即： for (int i = 0; i < 8; i++) { for (int j = 0; j < 4; j++) { if (j < 2) { sprites[j][i].setPosition(sf::Vector2f(100 * (i + 1) - 50, 100 * (j + 1) - 50)); } else { sprites[j][i].setPosition(sf::Vector2f(100 * (i + 1) - 50, 100 * (j + 5) - 50)); } } } 最后，确保只在开始 while 循环之前的某个地方调用它一次。也许在创建精灵矩阵之后立即是一个好主意。另外，我建议删除break语句并将布尔检查移到for循环上方 for (int i = 0; i < 4; i++) { for (int j = 0; j < 8; j++) { if (sprites[i][j].getGlobalBounds().contains(window.mapPixelToCoords(sf::Mouse::getPosition(window)))) { isPieceSelected = true; selectedPiece = &sprites[i][j]; clickOffset = window.mapPixelToCoords(sf::Mouse::getPosition(window)) - selectedPiece->getPosition(); break; } } if (isPieceSelected) break; 所以像这样： if (!isPieceSelected) { for (int i = 0; i < 4; i++) { for (int j = 0; j < 8; j++) { if (sprites[i][j].getGlobalBounds().contains(window.mapPixelToCoords(sf::Mouse::getPosition(window)))) { isPieceSelected = true; selectedPiece = &sprites[i][j]; clickOffset = window.mapPixelToCoords(sf::Mouse::getPosition(window)) - selectedPiece->getPosition(); break; } } } }

sfml chess

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SFML 麻烦 if(font.loadFromFile(FONT_PATH)) -> 预期声明

sf::Font 字体 const std::string FONT_PATH = "$(SolutionDir) esources\Fonts\Oswald-Regular.ttf"; if (!font.loadFromFile(FONT_PATH)) 返回-1； ... if 语句有错误......

sfml

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有没有办法配置 VS 代码以直接使用“运行代码”按钮使用 SFML 库？

我一直在尝试将 SFML 库与 Visual Studio Code 和 C/C++ v1.19.9 Microsoft 扩展一起使用。我的目标是配置 Visual Studio Code 以直接从

c++ visual-studio-code sfml

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使用 SFML 绘制函数

我是 SFML 新手。我在 Google 上搜索，找到了一种从方程在 SFML 中绘制多个点的方法。例如，我想绘制 200 个点 (x,y)，使得 y = 2x，范围为 (-10 < x < 10). ...

c++ plot sfml

回答 2 投票 0

SFML/C++ 为什么我的将敌人移向玩家的方法在玩家移动时停止工作？

在其他地方使用的唯一其他代码是 Player::getPosition()，它只是返回playerSprite.getPosition() 和 Game::update 将 Player::getPosition() 传递给此函数...

c++ sfml trigonometry

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如何使用 SFML 和 C++ 渲染贪吃蛇游戏的精灵

游戏运行良好，但它使用矩形形状，我想使用精灵渲染蛇部分。这是代码（是的，它不是那么干净，我只是想让它工作）： #包括游戏运行良好，但它使用矩形形状，我想使用精灵渲染蛇部分。这是代码（是的，它不是那么干净，我只是想让它工作）： #include <SFML/Graphics.hpp> // Graphics module #include <SFML/Audio.hpp> // Sound module #include <iostream> // Basic input/output (for errors) #include <vector> // Dynamic arrays (for snake body) #include <random> // For random food positions class Game { private: sf::Vector2u windowSize; // Size of the game window int a, b; // Length and width of a block sf::RenderWindow window; // Window object for drawing sf::Font font; // Text font sf::Clock clock; // For time measurement std::vector<sf::Vector2i> body; // Snake body (segments as coordinates) sf::Vector2i food; // Food position sf::Vector2i direction; // Snake direction int score; // Player's score bool gameOver; // Game state: finished or not int n, m; // Number of rows and columns float delay, timer; // Update delay and elapsed time sf::Music eat; // Sound effect for eating public: Game(unsigned short x, unsigned short y); // Constructor void start(); // Start the game private: void loop(); // Main game loop void events(); // Process events (keyboard, etc.) void update(); // Update game logic void render(); // Render elements on screen void gameOverScreen(); // Show "Game Over" screen sf::Vector2i getFoodPosition(); // Generate new food position }; int WinMain() { Game game(800, 600); game.start(); } int main() { Game game(800, 600); // Create object with window size 800x600 game.start(); // Call the start function } Game::Game(uint16_t x, uint16_t y) { windowSize = { x, y }; // Save window width and height window.create(sf::VideoMode(windowSize.x, windowSize.y, 1), "Snake"); // Create the window a = 50; // Set block width b = 50; // Set block height n = windowSize.x / a; // Calculate number of horizontal blocks m = windowSize.y / b; // Calculate number of vertical blocks font.loadFromFile("resources/Fonts/sfpro_bold.OTF"); // Load font for text eat.openFromFile("resources/Audio/eating_apple.mp3"); } void Game::start() { body.clear(); // Clear the snake body body.push_back({ 5,3 }); // Head body.push_back({ 4,3 }); // Body segment body.push_back({ 3,3 }); // Tail direction = { 0, 0 }; // Direction food = { getFoodPosition() }; // Initial food position gameOver = false; // Game not over (false) score = 0; // Start score from 0 loop(); // Main loop } void Game::loop() { timer = 0.f; // Accumulated time delay = 0.125f; // Game update delay while (window.isOpen()) { events(); // Handle user inputs (keyboard and mouse) timer += clock.getElapsedTime().asSeconds(); // Add elapsed time in seconds to the timer if (timer > delay) { update(); // Update the game (move snake, etc.) render(); // Render the screen (blocks, snake, food, text, etc.) timer = 0; // Reset timer } clock.restart(); // Restart the clock for the next cycle } } void Game::events() { sf::Event event; while (window.pollEvent(event)) { if (event.type == sf::Event::Closed) window.close(); if (event.type == sf::Event::KeyPressed) { if (event.key.code == sf::Keyboard::Escape) window.close(); else if (event.key.code == sf::Keyboard::Up && (direction.y != 1)) direction = { 0, -1 }; else if (event.key.code == sf::Keyboard::Down && (direction.y != -1)) direction = { 0, 1 }; else if (event.key.code == sf::Keyboard::Left && (direction.x != 1)) direction = { -1, 0 }; else if (event.key.code == sf::Keyboard::Right && (direction.x != -1)) direction = { 1, 0 }; else if (event.key.code == sf::Keyboard::R) /*if (gameOver)*/ start(); } } } void Game::update() { if (gameOver || direction == sf::Vector2i{ 0,0 }) return; sf::Vector2i newHead = body[0] + direction; for (size_t i = 1; i < body.size(); i++) { if (newHead == body[i]) { gameOver = true; return; } } if (newHead.x > n - 1 || newHead.x < 0 || newHead.y > m - 1 || newHead.y < 0) { gameOver = true; return; } if (newHead == food) { body.insert(body.begin(), newHead); food = getFoodPosition(); score++; eat.play(); } else { body.insert(body.begin(), newHead); body.pop_back(); } } void Game::render() { window.clear(); sf::RectangleShape block(sf::Vector2f(a, b)); for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { block.setPosition(i * a, j * b); int p = (i + j) % 2; block.setFillColor(sf::Color(172 - p * 7, 214 - p * 7, 67 - p * 7, 255)); window.draw(block); } } block.setPosition(food.x * a, food.y * b); block.setFillColor(sf::Color::Red); window.draw(block); for (int i = 0; i < body.size(); i++) { if (i == 0) block.setFillColor(sf::Color::Magenta); else block.setFillColor(sf::Color(0, 71, 181)); block.setPosition(body[i].x * a, body[i].y * b); window.draw(block); } sf::Text scr("Score: " + std::to_string(score), font, 32); scr.setFillColor(sf::Color::White); scr.setPosition(4, 0); window.draw(scr); if (gameOver) gameOverScreen(); window.display(); } void Game::gameOverScreen() { eat.stop(); sf::RectangleShape screen({ float(windowSize.x), float(windowSize.y) }); screen.setPosition({ 0,0 }); screen.setFillColor(sf::Color(0, 0, 0, 100)); sf::Text gameOverText(" Game over!\nPress R to restart", font, 38); gameOverText.setFillColor(sf::Color::White); gameOverText.setPosition((windowSize.x / 2) - 150, (windowSize.y / 2) - 20); window.draw(screen); window.draw(gameOverText); } sf::Vector2i Game::getFoodPosition() { std::random_device randomDevice; std::mt19937 randomNumberGenerator(randomDevice()); std::uniform_int_distribution<int> distX(0, n - 1); std::uniform_int_distribution<int> distY(0, m - 1); sf::Vector2i position; do { position.x = distX(randomNumberGenerator); position.y = distY(randomNumberGenerator); if (std::find(body.begin(), body.end(), position) == body.end()) { return position; } } while (true); } 上面的代码目前没有精灵功能，但这是我尝试过的一种方法（适用于渲染精灵）：创建纹理和精灵的地图，从文件加载纹理，将它们映射到精灵，然后我准备好了一张精灵地图。这部分并不难，我的渲染逻辑很可能存在缺陷。代码是从我拥有精灵逻辑时获取的，我基本上使用字符串来确定我应该加载哪个精灵。 sf::Vector2i prev = body[i + 1]; // sf::Vector2i next = body[i - 1]; //because i pop the tail and insert new part at the beginning if (next.x == prev.x) { spriteName = "body_vertical"; //vertical sprite | } else if (next.y == prev.y) { spriteName = "body_horizontal"; // horizontal -- } else { if (prev.x < next.x) { if (prev.y > next.y) spriteName = "body_topright"; // start top curve right downwards else spriteName = "body_bottomleft"; // bottom -> left } else if (prev.y < next.y) { spriteName = "body_topleft"; // top -> left else spriteName = "body_bottomright"; // bottom -> right } } else{ if (prev.y > next.y) { spriteName = "body_topleft"; // top -> left else spriteName = "body_bottomright"; // bottom -> right } else if (prev.y < next.y) { spriteName = "body_topright"; // top -> right else spriteName = "body_bottomleft"; // bottom -> left } } } 精灵链接：opengameart.org/content/snake-game-assets。基本上，我想要的是一些关于如何选择要加载的正确精灵以及在哪种情况下加载的反馈（头部和尾部也将受到赞赏🥹）。谢谢！这是一个稍微干净一点的代码， // choosing is based on the assumption // that the head is the last element in the body array // if not, you can simply reverse the conditions if (next == /*last in body*/) { spriteName == "head_sprite"; } else if (next == /*first in body*/) { spriteName = "tail_sprite"; } else if (next.x == prev.x || next.y == prev.y) { spriteName == "body_sprite"; } else { spriteName = "curved_sprite"; } // now rotate and reverse if (prev.x == next.x) { // rotate 90deg } else if (prev.x > next.x) { // reverse horizontally } if (prev.y > next.y) { // reverse vertically } 旋转/反转精灵比根据每种情况选择单独的精灵要方便得多。我从您附加的那些精灵中选择了snake_graphics.zip [“head_down”，“tail_down”，“body_vertical”，“body_bottomright”] 并将它们重命名为 [“head_sprite”、“tail_sprite”、“body_sprite”、“curved_sprite”] 分别。我可能错误地旋转/反转了精灵因为我不确定上一个还是下一个是当前的（“假设上一个是”），但这就是基本思想

c++ logic rendering sprite sfml

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如何检查片段是否位于纹理的边缘

我目前正在尝试用glsl（使用SFML）编写一个简单的轮廓着色器。我是着色器编程的新手，所以如果问题很明显，请原谅我。无论如何，着色器可以很好地检测边缘

c++ glsl shader sfml outline

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SFML draw() 未绘制第一个对象形状

我正在用 C++ 和 SFML 创建物理模拟引擎。我遇到了问题，我想绘制对象向量，但是绘制不会从向量中绘制第一个对象。如果我想画下一个

c++ sfml

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VS2022 C++ 音频文件的空目录。 CMake； SFML

我完全按照说明做了所有事情，结果和往常一样，我阅读了文档，没有指定这个错误，在控制台中引号中应该是au的目录...