Setup window and GL functions

5 files changed, 133 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+cmake-build-debug
+.idea
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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index 0000000..ee5ffc5
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+++ b/CMakeLists.txt
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+cmake_minimum_required(VERSION 3.23)
+project(meowcraft)
+
+set(CMAKE_CXX_STANDARD 17)
+
+find_package(OpenGL REQUIRED)
+find_package(glfw3 3.3 REQUIRED)
+find_package(GLEW REQUIRED)
+
+add_executable(meowcraft src/main.cpp src/Window.cpp src/Window.hpp)
+target_link_libraries(meowcraft glfw OpenGL GLEW::GLEW)
diff --git a/src/Window.cpp b/src/Window.cpp
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+++ b/src/Window.cpp
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+#include <stdexcept>
+#include "Window.hpp"
+
+namespace MC {
+
+Window::Window(const char *title, uint32_t width, uint32_t height) {
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
+
+    m_window = glfwCreateWindow(width, height, title, nullptr, nullptr);
+    if (m_window == nullptr) {
+        throw std::runtime_error("Failed to create window.");
+    }
+
+    glfwMakeContextCurrent(m_window);
+}
+
+Window::~Window() {
+    glfwDestroyWindow(m_window);
+}
+
+bool Window::should_close() {
+    return glfwWindowShouldClose(m_window);
+}
+
+GLFWwindow* Window::get() {
+    return m_window;
+}
+
+void Window::close() {
+    glfwSetWindowShouldClose(m_window, true);
+}
+
+bool Window::key(int key, int type) {
+    return (glfwGetKey(m_window, key) == type);
+}
+
+void Window::start_frame() {
+    glfwSwapBuffers(m_window);
+    glfwPollEvents();
+}
+
+}
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diff --git a/src/Window.hpp b/src/Window.hpp
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+++ b/src/Window.hpp
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+#pragma once
+
+#include <cstdint>
+#include <GLFW/glfw3.h>
+
+namespace MC {
+
+class Window {
+public:
+    Window(const char* title, uint32_t width, uint32_t height);
+    ~Window();
+
+    GLFWwindow* get();
+
+    void close();
+    void start_frame();
+
+    bool key(int key, int type);
+    bool should_close();
+private:
+    GLFWwindow* m_window;
+};
+
+}
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diff --git a/src/main.cpp b/src/main.cpp
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+++ b/src/main.cpp
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+#include <iostream>
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#include "Window.hpp"
+
+#define APP_NAME "Meowcraft"
+
+#define WINDOW_WIDTH 1000
+#define WINDOW_HEIGHT 800
+
+void run();
+void setup_gl();
+
+int main() {
+    glfwInit();
+
+    try {
+        run();
+    } catch (std::runtime_error& error) {
+        std::cout << "An error occurred: " << error.what() << std::endl;
+        glfwTerminate();
+        return 1;
+    }
+
+    glfwTerminate();
+    return 0;
+}
+
+void run() {
+    MC::Window window(APP_NAME, WINDOW_WIDTH, WINDOW_HEIGHT);
+    setup_gl();
+
+    glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+
+    while (!window.should_close()) {
+        window.start_frame();
+
+        if (window.key(GLFW_KEY_ESCAPE, GLFW_PRESS)) {
+            window.close();
+        }
+    }
+}
+
+void setup_gl() {
+    GLenum error;
+    if ((error = glewInit()) != GLEW_OK) {
+        std::string error_string = std::string(reinterpret_cast<const char*>(glewGetErrorString(error)));
+        throw std::runtime_error("Failed to load GL functions: " + error_string);
+    }
+}