113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
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// Local headers
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#include "utilities/window.hpp"
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#include "program.hpp"
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// System headers
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#include <glad/glad.h>
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#include <GLFW/glfw3.h>
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// Standard headers
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#include <cstdlib>
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#include <arrrgh.hpp>
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// A callback which allows GLFW to report errors whenever they occur
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static void glfwErrorCallback(int error, const char *description)
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{
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fprintf(stderr, "GLFW returned an error:\n\t%s (%i)\n", description, error);
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}
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GLFWwindow* initialise()
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{
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// Initialise GLFW
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if (!glfwInit())
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{
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fprintf(stderr, "Could not start GLFW\n");
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exit(EXIT_FAILURE);
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}
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// Set core window options (adjust version numbers if needed)
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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// Enable the GLFW runtime error callback function defined previously.
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glfwSetErrorCallback(glfwErrorCallback);
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// Set additional window options
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glfwWindowHint(GLFW_RESIZABLE, windowResizable);
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glfwWindowHint(GLFW_SAMPLES, windowSamples); // MSAA
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// Create window using GLFW
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GLFWwindow* window = glfwCreateWindow(windowWidth,
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windowHeight,
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windowTitle.c_str(),
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nullptr,
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nullptr);
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// Ensure the window is set up correctly
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if (!window)
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{
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fprintf(stderr, "Could not open GLFW window\n");
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glfwTerminate();
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exit(EXIT_FAILURE);
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}
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// Let the window be the current OpenGL context and initialise glad
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glfwMakeContextCurrent(window);
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gladLoadGL();
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// Print various OpenGL information to stdout
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printf("%s: %s\n", glGetString(GL_VENDOR), glGetString(GL_RENDERER));
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printf("GLFW\t %s\n", glfwGetVersionString());
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printf("OpenGL\t %s\n", glGetString(GL_VERSION));
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printf("GLSL\t %s\n\n", glGetString(GL_SHADING_LANGUAGE_VERSION));
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return window;
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}
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int main(int argc, const char* argb[])
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{
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arrrgh::parser parser("glowbox", "Small breakout like juggling game");
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const auto& showHelp = parser.add<bool>("help", "Show this help message.", 'h', arrrgh::Optional, false);
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const auto& enableMusic = parser.add<bool>("enable-music", "Play background music while the game is playing", 'm', arrrgh::Optional, false);
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const auto& enableAutoplay = parser.add<bool>("autoplay", "Let the game play itself automatically. Useful for testing.", 'a', arrrgh::Optional, false);
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// If you want to add more program arguments, define them here,
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// but do not request their value here (they have not been parsed yet at this point).
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try
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{
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parser.parse(argc, argb);
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}
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catch (const std::exception& e)
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{
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std::cerr << "Error parsing arguments: " << e.what() << std::endl;
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parser.show_usage(std::cerr);
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exit(1);
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}
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// Show help if desired
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if(showHelp.value())
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{
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return 0;
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}
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CommandLineOptions options;
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options.enableMusic = enableMusic.value();
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options.enableAutoplay = enableAutoplay.value();
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// Initialise window using GLFW
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GLFWwindow* window = initialise();
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// Run an OpenGL application using this window
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runProgram(window, options);
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// Terminate GLFW (no need to call glfwDestroyWindow)
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glfwTerminate();
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return EXIT_SUCCESS;
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}
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