Get an opengl window showing.

This commit is contained in:
SeanOMik 2021-11-20 00:48:47 -05:00
parent e69c86283c
commit 9feff47a35
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GPG Key ID: CA09E5BE1F32728A
6 changed files with 125 additions and 263 deletions

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@ -5,12 +5,10 @@ project(SimpleEngine)
# Add some CMake options:
option(SIMPLE_ENGINE_BUILD_EXAMPLES "Build example projects" ON)
set(SFML_BUILD_AUDIO ON)
set(SFML_BUILD_GRAPHICS ON)
set(SFML_BUILD_WINDOW ON)
set(SFML_BUILD_SYSTEM ON)
find_package(SFML 2 COMPONENTS system main window graphics audio REQUIRED)
find_package(GLEW REQUIRED)
find_package(glfw3 CONFIG REQUIRED)
find_package(glm CONFIG REQUIRED)
find_package(soil2 CONFIG REQUIRED)
# Link sources
file(GLOB_RECURSE source_list src/*.cpp)
@ -20,13 +18,15 @@ add_library(simpleengine STATIC ${source_list})
target_include_directories(simpleengine PUBLIC include PRIVATE include/simpleengine)
# Link dependencies
target_link_libraries(simpleengine PUBLIC sfml-system sfml-main sfml-window sfml-network sfml-graphics sfml-audio OpenGL Freetype OpenAL Vorbis FLAC)
#target_link_libraries(simpleengine PUBLIC FLAC OpenAL OpenGL Vorbis)
target_link_libraries(simpleengine PUBLIC GLEW::GLEW)
target_link_libraries(simpleengine PUBLIC glfw)
target_link_libraries(simpleengine PUBLIC glm::glm)
target_link_libraries(simpleengine PUBLIC soil2)
# Add examples as a target if the user has them enabled
if (SIMPLE_ENGINE_BUILD_EXAMPLES)
add_subdirectory(examples)
endif()
# Set C++ standard to C++17
set_target_properties(simpleengine PROPERTIES CXX_STANDARD 17 CXX_EXTENSIONS OFF)
# Set C++ standard to C++20
set_target_properties(simpleengine PROPERTIES CXX_STANDARD 20 CXX_EXTENSIONS OFF)

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@ -1,3 +1,2 @@
# Add examples as a subdirectory
add_subdirectory(snake)
add_subdirectory(animation)
add_subdirectory(dev_testing)

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@ -0,0 +1,15 @@
cmake_minimum_required (VERSION 3.6)
project(DevTesting DESCRIPTION "A testing project for engine developers.")
add_executable(dev_testing src/main.cpp)
# Link headers and source files.
file(GLOB_RECURSE source_list src/*.cpp)
target_sources(dev_testing PRIVATE ${source_list})
target_include_directories(dev_testing PUBLIC include)
# Link simpleengine
target_link_libraries(dev_testing PUBLIC simpleengine)
# Set standard to C++20
set_target_properties(dev_testing PROPERTIES CXX_STANDARD 20 CXX_EXTENSIONS OFF)

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@ -0,0 +1,15 @@
//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
//
#include <simpleengine/game.h>
#include <chrono>
#include <iostream>
int main(int argc, char *argv[]) {
simpleengine::Game game(1280, 720, "SimpleEngine - Developer Testing", false);
return game.run();
}

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@ -1,145 +1,44 @@
//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_GAME_H
#define SIMPLEENGINE_GAME_H
#include <SFML/Graphics.hpp>
#include <SFML/System.hpp>
#include <SFML/Audio.hpp>
#include <string>
#include <memory>
#include <SFML/Window/Event.hpp>
#include <functional>
#include "entity.h"
#include "events/collision_handler.h"
#include <gl/glew.h>
#include <GLFW/glfw3.h>
namespace simpleengine {
class Event;
class Game {
public:
friend class CollisionHandler;
Game(int w, int h, const std::string& window_name);
Game(const sf::Vector2u& window_size, const std::string& window_name);
/**
* @brief Construct a new Game object. Initializes GLEW and OpenGL
*
* @param w Width of viewport
* @param h Height of viewport
* @param window_name The name of the window
*/
Game(int w, int h, const std::string& window_name, const bool& resizeable = false);
virtual ~Game();
void UpdateSFMLEvents();
void Update();
void RenderWindow();
void RenderItems();
void ExitGame();
int Run();
void update();
void render_window();
void render_items();
void exit();
int run();
void AddEvent(Event* event);
sf::RenderWindow* GetWindow();
template<sf::Event::EventType type, class _Fty>
void AddEventCallback(const std::function<_Fty>& func) {
if constexpr (type == sf::Event::Closed) {
close_event.Add(func);
} else if constexpr (type == sf::Event::Resized) {
resized_event.Add(func);
} else if constexpr (type == sf::Event::LostFocus) {
lost_focus_event.Add(func);
} else if constexpr (type == sf::Event::GainedFocus) {
gained_focus_event.Add(func);
} else if constexpr (type == sf::Event::TextEntered) {
text_entered_event.Add(func);
} else if constexpr (type == sf::Event::KeyPressed) {
key_pressed_event.Add(func);
} else if constexpr (type == sf::Event::KeyReleased) {
key_released_event.Add(func);
} else if constexpr (type == sf::Event::MouseWheelMoved) {
mouse_wheel_moved_event.Add(func);
} else if constexpr (type == sf::Event::MouseWheelScrolled) {
mouse_wheel_scrolled_event.Add(func);
} else if constexpr (type == sf::Event::MouseButtonPressed) {
mouse_button_pressed_event.Add(func);
} else if constexpr (type == sf::Event::MouseButtonReleased) {
mouse_button_released_event.Add(func);
} else if constexpr (type == sf::Event::MouseMoved) {
mouse_move_event.Add(func);
} else if constexpr (type == sf::Event::MouseEntered) {
mouse_entered_event.Add(func);
} else if constexpr (type == sf::Event::MouseLeft) {
mouse_left_event.Add(func);
} else if constexpr (type == sf::Event::JoystickButtonPressed) {
joy_btn_pressed_event.Add(func);
} else if constexpr (type == sf::Event::JoystickButtonReleased) {
joy_btn_released_event.Add(func);
} else if constexpr (type == sf::Event::JoystickMoved) {
joy_moved_event.Add(func);
} else if constexpr (type == sf::Event::JoystickConnected) {
joy_connected_event.Add(func);
} else if constexpr (type == sf::Event::JoystickDisconnected) {
joy_disconnected_event.Add(func);
} else if constexpr (type == sf::Event::TouchBegan) {
touch_began_event.Add(func);
} else if constexpr (type == sf::Event::TouchMoved) {
touch_moved_event.Add(func);
} else if constexpr (type == sf::Event::TouchEnded) {
touch_ended_event.Add(func);
} else if constexpr (type == sf::Event::SensorChanged) {
sensor_event.Add(func);
} else if constexpr (type == sf::Event::Count) {
}
}
//void AddEvent(Event* event);
std::shared_ptr<GLFWwindow> get_window();
private:
template<class _Fty>
class EventHolder {
public:
template<typename... Args>
void Trigger(Args... args) {
for(const std::function<_Fty>& func : callbacks) {
func(std::forward<Args>(args)...);
}
}
static void framebuffer_resize_callback(GLFWwindow*, int fbW, int fbH);
void Add(const std::function<_Fty>& func) {
callbacks.emplace_back(func);
}
private:
std::vector<std::function<_Fty>> callbacks;
};
// Window event callbacks:
EventHolder<void()> close_event;
EventHolder<void(sf::Event::SizeEvent)> resized_event;
EventHolder<void()> lost_focus_event;
EventHolder<void()> gained_focus_event;
EventHolder<void(sf::Event::TextEvent)> text_entered_event;
EventHolder<void(sf::Event::KeyEvent)> key_pressed_event;
EventHolder<void(sf::Event::KeyEvent)> key_released_event;
EventHolder<void(sf::Event::MouseWheelEvent)> mouse_wheel_moved_event;
EventHolder<void(sf::Event::MouseWheelScrollEvent)> mouse_wheel_scrolled_event;
EventHolder<void(sf::Event::MouseButtonEvent)> mouse_button_pressed_event;
EventHolder<void(sf::Event::MouseButtonEvent)> mouse_button_released_event;
EventHolder<void(sf::Event::MouseMoveEvent)> mouse_move_event;
EventHolder<void()> mouse_entered_event;
EventHolder<void()> mouse_left_event;
EventHolder<void(sf::Event::JoystickButtonEvent)> joy_btn_pressed_event;
EventHolder<void(sf::Event::JoystickButtonEvent)> joy_btn_released_event;
EventHolder<void(sf::Event::JoystickMoveEvent)> joy_moved_event;
EventHolder<void(sf::Event::JoystickConnectEvent)> joy_connected_event;
EventHolder<void(sf::Event::JoystickConnectEvent)> joy_disconnected_event;
EventHolder<void(sf::Event::TouchEvent)> touch_began_event;
EventHolder<void(sf::Event::TouchEvent)> touch_moved_event;
EventHolder<void(sf::Event::TouchEvent)> touch_ended_event;
EventHolder<void(sf::Event::SensorEvent)> sensor_event;
sf::RenderWindow* window;
sf::Clock delta_time_clock; // Delta time clock
float delta_time; // Delta time
std::vector<Event*> events;
std::shared_ptr<GLFWwindow> window;
};
}

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@ -1,160 +1,94 @@
//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "game.h"
#include "entity.h"
#include "event.h"
simpleengine::Game::Game(int w, int h, const std::string& window_name) {
// Create a render window
window = new sf::RenderWindow(sf::VideoMode(w, h), window_name);
}
#include <iostream>
simpleengine::Game::Game(const sf::Vector2u& window_size, const std::string& window_name) : simpleengine::Game(window_size.x, window_size.y, window_name) {
#include <gl/glew.h>
#include <GLFW/glfw3.h>
#include <gl/gl.h>
simpleengine::Game::Game(int w, int h, const std::string& window_name, const bool& resizeable) {
// Create a window
glfwInit();
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 4);
glfwWindowHint(GLFW_RESIZABLE, resizeable);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
window = std::shared_ptr<GLFWwindow>(glfwCreateWindow(w, h, window_name.c_str(), NULL, NULL));
// If we're not resizeable, we need to set the viewport size.
if (!resizeable) {
int fbWidth;
int fbHeight;
glfwGetFramebufferSize(window.get(), &fbWidth, &fbHeight);
glViewport(0, 0, fbWidth, fbHeight);
} else {
glfwSetFramebufferSizeCallback(window.get(), simpleengine::Game::framebuffer_resize_callback);
}
glfwMakeContextCurrent(window.get());
glewExperimental = GL_TRUE;
if (glewInit() != GLEW_OK) {
std::cout << "Failed to initialize glew!" << std::endl;
glfwTerminate();
}
}
simpleengine::Game::~Game() {
delete window;
std::vector<Event*>::iterator it = events.begin();
while (it != events.end()) {
delete (*it);
it = events.erase(it);
}
}
void simpleengine::Game::UpdateSFMLEvents() {
sf::Event event;
while (window->pollEvent(event)) {
switch (event.type) {
case sf::Event::Closed:
close_event.Trigger();
window->close();
break;
case sf::Event::Resized:
resized_event.Trigger(event.size);
break;
case sf::Event::LostFocus:
lost_focus_event.Trigger();
break;
case sf::Event::GainedFocus:
gained_focus_event.Trigger();
break;
case sf::Event::TextEntered:
text_entered_event.Trigger(event.text);
break;
case sf::Event::KeyPressed:
key_pressed_event.Trigger(event.key);
break;
case sf::Event::KeyReleased:
key_released_event.Trigger(event.key);
break;
case sf::Event::MouseWheelMoved:
mouse_wheel_moved_event.Trigger(event.mouseWheel);
break;
case sf::Event::MouseWheelScrolled:
mouse_wheel_scrolled_event.Trigger(event.mouseWheelScroll);
break;
case sf::Event::MouseButtonPressed:
mouse_button_pressed_event.Trigger(event.mouseButton);
break;
case sf::Event::MouseButtonReleased:
mouse_button_released_event.Trigger(event.mouseButton);
break;
case sf::Event::MouseMoved:
mouse_move_event.Trigger(event.mouseMove);
break;
case sf::Event::MouseEntered:
mouse_entered_event.Trigger();
break;
case sf::Event::MouseLeft:
mouse_left_event.Trigger();
break;
case sf::Event::JoystickButtonPressed:
joy_btn_pressed_event.Trigger(event.joystickButton);
break;
case sf::Event::JoystickButtonReleased:
joy_btn_released_event.Trigger(event.joystickButton);
break;
case sf::Event::JoystickMoved:
joy_moved_event.Trigger(event.joystickMove);
break;
case sf::Event::JoystickConnected:
joy_connected_event.Trigger(event.joystickConnect);
break;
case sf::Event::JoystickDisconnected:
joy_disconnected_event.Trigger(event.joystickConnect);
break;
case sf::Event::TouchBegan:
touch_began_event.Trigger(event.touch);
break;
case sf::Event::TouchMoved:
touch_moved_event.Trigger(event.touch);
break;
case sf::Event::TouchEnded:
touch_ended_event.Trigger(event.touch);
break;
case sf::Event::SensorChanged:
sensor_event.Trigger(event.sensor);
break;
case sf::Event::Count:
break;
}
}
void simpleengine::Game::update() {
}
void simpleengine::Game::Update() {
delta_time = delta_time_clock.restart().asSeconds(); // Update delta time
UpdateSFMLEvents();
for (std::vector<Event*>::iterator it = events.begin(); it != events.end(); ) {
(*it)->Update(delta_time);
if ((*it)->IsDestroying()) {
delete (*it);
it = events.erase(it);
} else {
++it;
}
}
void simpleengine::Game::render_window() {
glClearColor(0.f, 0.f, 0.f, 1.f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
render_items();
}
void simpleengine::Game::RenderWindow() {
window->clear();
RenderItems();
window->display();
void simpleengine::Game::render_items() {
}
void simpleengine::Game::RenderItems() {
for (std::vector<Event*>::iterator it = events.begin(); it != events.end(); it++) {
(*it)->Render(window);
}
}
int simpleengine::Game::run() {
while (!glfwWindowShouldClose(window.get())) {
// Update input
glfwPollEvents();
int simpleengine::Game::Run() {
sf::CircleShape shape(100);
shape.setFillColor(sf::Color::Green);
update();
while (window->isOpen()) {
Update();
RenderWindow();
render_window();
// End draw
glfwSwapBuffers(window.get());
glFlush();
}
return 0;
}
void simpleengine::Game::AddEvent(simpleengine::Event *event) {
events.emplace_back(event);
}
sf::RenderWindow* simpleengine::Game::GetWindow() {
std::shared_ptr<GLFWwindow> simpleengine::Game::get_window() {
return window;
}
void simpleengine::Game::ExitGame() {
window->close();
void simpleengine::Game::exit() {
glfwSetWindowShouldClose(window.get(), true);
glfwTerminate();
}
void simpleengine::Game::framebuffer_resize_callback(GLFWwindow*, int fbW, int fbH) {
glViewport(0, 0, fbW, fbH);
}