From e2234b4afebb266878435d10267e7b162b1fe984 Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Sat, 1 Oct 2022 05:12:50 +0200
Subject: Setup window and GL functions

---
 .gitignore     |  2 ++
 CMakeLists.txt | 11 +++++++++++
 src/Window.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++
 src/Window.hpp | 24 ++++++++++++++++++++++++
 src/main.cpp   | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 133 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 CMakeLists.txt
 create mode 100644 src/Window.cpp
 create mode 100644 src/Window.hpp
 create mode 100644 src/main.cpp

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1b72d0a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+cmake-build-debug
+.idea
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..ee5ffc5
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,11 @@
+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
new file mode 100644
index 0000000..8bb8580
--- /dev/null
+++ b/src/Window.cpp
@@ -0,0 +1,45 @@
+#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();
+}
+
+}
\ No newline at end of file
diff --git a/src/Window.hpp b/src/Window.hpp
new file mode 100644
index 0000000..acd39fe
--- /dev/null
+++ b/src/Window.hpp
@@ -0,0 +1,24 @@
+#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;
+};
+
+}
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..91e1b23
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,51 @@
+#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);
+    }
+}
-- 
cgit 1.4.1