main.cpp

#include <iostream>
#include <glad/glad.h>
#include <GLFW/glfw3.h>

#include "mygl.h"
#include "game.h"
#include "inputbundle.h"
#include "guimanager.h"

InputBundle input;

void framebufferSizeCallback(GLFWwindow* window, int width, int height) {
	glViewport(0, 0, width, height);
	MyGL::screenDimensions = ivec2(width, height);
}

void processInput(GLFWwindow *window) {
	if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
		glfwSetWindowShouldClose(window, true);
	}
	input.update(window);
}

void mouseCallback(GLFWwindow *window, double mouseX, double mouseY) {
	input.mousePos = vec2(mouseX, mouseY);
}

int main() {
	glfwInit();
	
	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

	GLFWwindow* window = glfwCreateWindow(800, 800, "Test Window", nullptr, nullptr);
	if (window == nullptr) {
		std::cout << "Failed to create GLFW Window" << std::endl;
		glfwTerminate();
		return -1;
	}
	glfwMakeContextCurrent(window);

	gladLoadGL();

	glViewport(0, 0, 800, 800);
	MyGL::screenDimensions = ivec2(800);

	glfwSetFramebufferSizeCallback(window, framebufferSizeCallback);

	glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
	glfwSetCursorPosCallback(window, mouseCallback);

	IMGUI_CHECKVERSION();
	ImGui::CreateContext();
	ImGuiIO& io = ImGui::GetIO();
	ImGui::StyleColorsDark();
	ImGui_ImplGlfw_InitForOpenGL(window, true);
	ImGui_ImplOpenGL3_Init("#version 330");

	//
	Game game = Game(window, &input);
	game.init();
	float lastTime = 0.0f;
	float currTime = 0.0f;

	while (!glfwWindowShouldClose(window)) {
		// Input
		processInput(window);

		// Update input
		currTime = glfwGetTime();
		game.update(currTime - lastTime);
		lastTime = currTime;
		
		// Render
		game.render();

		// Draw to Screen
		glfwPollEvents();
		glfwSwapBuffers(window);
	}

	ImGui_ImplOpenGL3_Shutdown();
	ImGui_ImplGlfw_Shutdown();
	ImGui::DestroyContext();

	glfwDestroyWindow(window);
	glfwTerminate();
	return 0;
}