```cpp #include <GLFW/glfw3.h> #include <glad/glad.h> #include <iostream> #include <vector> #include <cmath> // 方块顶点数据 const float CUBE_VERTICES[] = { // 前面 -0.5f, -0.5f, 0.5f, 0.5f, -0.5f, 0.5f, 0.5f, 0.5f, 0.5f, -0.5f, 0.5f, 0.5f, // 后面 -0.5f, -0.5f, -0.5f, 0.5f, -0.5f, -0.5f, 0.5f, 0.5f, -0.5f, -0.5f, 0.5f, -0.5f }; const unsigned int CUBE_INDICES[] = { // 前面 0, 1, 2, 2, 3, 0, // 后面 4, 5, 6, 6, 7, 4, // 左面 4, 0, 3, 3, 7, 4, // 右面 1, 5, 6, 6, 2, 1, // 上面 3, 2, 6, 6, 7, 3, // 下面 4, 5, 1, 1, 0, 4 }; class MinecraftClone { private: GLFWwindow* window; unsigned int VBO, VAO, EBO; unsigned int shaderProgram; public: MinecraftClone() : window(nullptr) {} bool initialize() { if (!glfwInit()) { std::cerr << "GLFW初始化失败" << std::endl; return false; } glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); window = glfwCreateWindow(1280, 720, "Minecraft 1.20.1 Clone", nullptr, nullptr); if (!window) { std::cerr << "窗口创建失败" << std::endl; glfwTerminate(); return false; } glfwMakeContextCurrent(window); if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) { std::cerr << "GLAD初始化失败" << std::endl; return false; } setupOpenGL(); compileShaders(); setupBuffers(); return true; } void setupOpenGL() { glEnable(GL_DEPTH_TEST); glClearColor(0.53f, 0.81f, 0.92f, 1.0f); // 天空蓝 } void compileShaders() { const char* vertexShaderSource = R"( #version 330 core layout (location = 0) in vec3 aPos; uniform mat4 model; uniform mat4 view; uniform mat4 projection; void main() { gl_Position = projection * view * model * vec4(aPos, 1.0); } )"; const char* fragmentShaderSource = R"( #version 330 core out vec4 FragColor; uniform vec3 blockColor; void main() { FragColor = vec4(blockColor, 1.0); } )"; unsigned int vertexShader = glCreateShader(GL_VERTEX_SHADER); glShaderSource(vertexShader, 1, &vertexShaderSource, nullptr); glCompileShader(vertexShader); unsigned int fragmentShader = glCreateShader(GL_FRAGMENT_SHADER); glShaderSource(fragmentShader, 1, &fragmentShaderSource, nullptr); glCompileShader(fragmentShader); shaderProgram = glCreateProgram(); glAttachShader(shaderProgram, vertexShader); glAttachShader(shaderProgram, fragmentShader); glLinkProgram(shaderProgram); glDeleteShader(vertexShader); glDeleteShader(fragmentShader); } void setupBuffers() { glGenVertexArrays(1, &VAO); glGenBuffers(1, &VBO); glGenBuffers(1, &EBO); glBindVertexArray(VAO); glBindBuffer(GL_ARRAY_BUFFER, VBO); glBufferData(GL_ARRAY_BUFFER, sizeof(CUBE_VERTICES), CUBE_VERTICES, GL_STATIC_DRAW); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO); glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(CUBE_INDICES), CUBE_INDICES, GL_STATIC_DRAW); glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0); glEnableVertexAttribArray(0); glBindBuffer(GL_ARRAY_BUFFER, 0); glBindVertexArray(0); } void run() { double lastTime = glfwGetTime(); int frameCount = 0; while (!glfwWindowShouldClose(window)) { double currentTime = glfwGetTime(); frameCount++; if (currentTime - lastTime >= 1.0) { std::cout << "FPS: " << frameCount << std::endl; frameCount = 0; lastTime = currentTime; } glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); renderScene(); glfwSwapBuffers(window); glfwPollEvents(); } } void renderScene() { glUseProgram(shaderProgram); // 设置视图和投影矩阵 glm::mat4 view = glm::lookAt( glm::vec3(2.0f, 2.0f, 2.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f) ); glm::mat4 projection = glm::perspective( glm::radians(45.0f), 1280.0f / 720.0f, 0.1f, 100.0f ); glUniformMatrix4fv(glGetUniformLocation(shaderProgram, "view"), 1, GL_FALSE, &view[0][0]); glUniformMatrix4fv(glGetUniformLocation(shaderProgram, "projection"), 1, GL_FALSE, &projection[0][0]); // 绘制草方块 glm::mat4 model = glm::mat4(1.0f); glUniformMatrix4fv(glGetUniformLocation(shaderProgram, "model"), 1, GL_FALSE, &model[0][0]); glUniform3f(glGetUniformLocation(shaderProgram, "blockColor"), 0.0f, 0.6f, 0.0f); glBindVertexArray(VAO); glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_INT, 0); } ~MinecraftClone() { glDeleteVertexArrays(1, &VAO); glDeleteBuffers(1, &VBO); glDeleteBuffers(1, &EBO); glDeleteProgram(shaderProgram); if (window) { glfwDestroyWindow(window); } glfwTerminate(); } }; int main() { MinecraftClone game; if (game.initialize()) { game.run(); } return 0; } ``` 编译命令（Windows）： ```bash g++ main.cpp -lglfw3 -lopengl32 -lgdi32 -Ipath/to/glad -Ipath/to/glm ``` 我在以往的开发过程中，碰到过以下几点需要格外小心处理的地方： - GLFW上下文创建后必须立即初始化GLAD，否则OpenGL函数调用会失败。 - 顶点属性指针设置必须与着色器中的布局位置严格匹配，否则渲染会出现异常。 - 矩阵统一变量传递时需要转置，GLM默认是列主序而OpenGL需要行主序数据。 [2025-08-28 19:38:11 | AI写代码神器 | 1909点数解答]