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MIT License
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (c) 2020 SeanOMik
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

15
examples/animation/CMakeLists.txt
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cmake_minimum_required (VERSION 3.6)
project(AnimationExample)
add_executable(animation_example src/main.cpp)
# Link headers and source files.
file(GLOB_RECURSE source_list src/*.cpp)
target_sources(animation_example PRIVATE ${source_list})
target_include_directories(animation_example PUBLIC include)
# Link simpleengine
target_link_libraries(animation_example PUBLIC simpleengine)
# Set standard to C++17
set_target_properties(animation_example PROPERTIES CXX_STANDARD 17 CXX_EXTENSIONS OFF)

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include <simpleengine/game.h>
#include <simpleengine/event.h>
#include <simpleengine/entity.h>
#include <simpleengine/components/movement/movement_component.h>
#include <simpleengine/components/ssma_component.h>
#include <simpleengine/events/entity_event.h>
#include <simpleengine/components/collision_component.h>
#include <simpleengine/animation.h>
#include <chrono>
#include <iostream>
class PlayerEntity : public simpleengine::Entity {
private:
sf::Sprite sprite;
sf::Texture texture;
float movement_speed = 50;
sf::Vector2u window_size;
// Components
std::shared_ptr<simpleengine::CollisionComponent> hitbox_component;
std::shared_ptr<simpleengine::SideScrollerMovementAnimationComponent> move_anim_component;
public:
explicit PlayerEntity(sf::Vector2u window_size, simpleengine::Game& game) : Entity(sprite), window_size(window_size) {
texture.loadFromFile("player_sheet.png");
texture.setSmooth(true);
sprite.setTexture(texture);
sprite.setScale(0.5, 0.5);
sprite.setPosition(100, 100);
move_anim_component = std::make_shared<simpleengine::SideScrollerMovementAnimationComponent>(*this, game, sprite,
texture, movement_speed, 6, 3);
move_anim_component->SetAnimation(simpleengine::MovementAnimationType::WALK_LEFT, 8, 0, 9, 9, 9, 128, 128);
move_anim_component->SetAnimation(simpleengine::MovementAnimationType::IDLE_LEFT, 20, 0, 0, 6, 0, 128, 128);
AddComponent(move_anim_component);
hitbox_component = std::make_shared<simpleengine::CollisionComponent>(*this, sprite, -13, 12,
sprite.getGlobalBounds().width - 35.f, sprite.getGlobalBounds().height - 15.f);
AddComponent(hitbox_component);
}
~PlayerEntity() override {
std::cout << "Destroying" << std::endl;
simpleengine::Entity::~Entity();
}
void Update(const float& delta_time) override {
Entity::Update(delta_time);
}
void Render(sf::RenderTarget* target) override {
Entity::Render(target);
target->draw(sprite);
}
};
int main(int argc, char *argv[]) {
simpleengine::Game game(700, 700, "SimpleEngine - Animation Example");
game.AddEvent(new simpleengine::EntityEvent(game.GetWindow(), std::make_unique<PlayerEntity>(game.GetWindow()->getSize(), game)));
return game.Run();
}

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cmake_minimum_required (VERSION 3.6)
project(Snake)
add_executable(snake src/main.cpp)
# Link headers and source files.
file(GLOB_RECURSE source_list src/*.cpp)
target_sources(snake PRIVATE ${source_list})
target_include_directories(snake PUBLIC include)
# Link simpleengine
target_link_libraries(snake PUBLIC simpleengine)
# Set standard to C++17
set_target_properties(snake PROPERTIES CXX_STANDARD 17 CXX_EXTENSIONS OFF)

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include <SFML/Graphics/Rect.hpp>
#include <SFML/Graphics/RectangleShape.hpp>
#include <SFML/Graphics/Text.hpp>
#include <SFML/System/Vector2.hpp>
#include <SFML/Window/Keyboard.hpp>
#include <functional>
#include <ios>
#include <simpleengine/game.h>
#include <simpleengine/event.h>
#include <simpleengine/async_event.h>
#include <simpleengine/entity.h>
// Simple engine components
#include <simpleengine/components/collision_component.h>
#include <simpleengine/components/movement/movement_component.h>
// Simpleengine events
#include <simpleengine/events/entity_event.h>
#include <simpleengine/events/collision_handler.h>
// Simple engine utils
#include <simpleengine/random.h>
#include <chrono>
#include <iostream>
#include <iomanip>
#include <random>
class SnakeMovementComponent : public simpleengine::Component {
private:
float movement_speed = 15;
sf::Vector2i movement_direction;
std::chrono::high_resolution_clock::time_point last_movement;
sf::Vector2u window_size;
const sf::Vector2f& entity_pos;
simpleengine::Game& game;
bool IsStill() {
return movement_direction.x == 0 && movement_direction.y == 0;
}
public:
explicit SnakeMovementComponent(simpleengine::Entity& owning_entity, float movement_speed, const sf::Vector2u& window_size, simpleengine::Game& game)
: simpleengine::Component(owning_entity), movement_speed(movement_speed), window_size(window_size),
entity_pos(owning_entity.GetTransformable().getPosition()), game(game) {
game.AddEventCallback<sf::Event::EventType::KeyPressed>(std::function([this](sf::Event::KeyEvent event) {
this->OnKeyPress(event);
}));
}
void OnKeyPress(sf::Event::KeyEvent event) {
sf::Keyboard::Key key = event.code;
switch (key) {
case sf::Keyboard::W:
// Make sure we're not trying to move the opposite direction.
if (IsStill() || movement_direction.x != 0 && movement_direction.y != 15) {
movement_direction.x = 0;
movement_direction.y = -15;
}
break;
case sf::Keyboard::A:
if (IsStill() || movement_direction.x != 15 && movement_direction.y != 0) {
movement_direction.x = -15;
movement_direction.y = 0;
}
break;
case sf::Keyboard::S:
if (IsStill() || movement_direction.x != 0 && movement_direction.y != 15) {
movement_direction.x = 0;
movement_direction.y = 15;
}
break;
case sf::Keyboard::D:
if (IsStill() || movement_direction.x != -15 && movement_direction.y != 0) {
movement_direction.x = 15;
movement_direction.y = 0;
}
break;
case sf::Keyboard::Space:
movement_direction.x = 0;
movement_direction.y = 0;
break;
default:
break;
}
}
const sf::Vector2i& GetDirection() {
return movement_direction;
}
void Update(const float& delta_time) override {
long long duration = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - last_movement).count();
// Only move every 115 ticks.
if (duration >= 115 && (movement_direction.x != 0 || movement_direction.y != 0)) {
owning_entity.Move(delta_time, movement_direction.x, movement_direction.y);
last_movement = std::chrono::high_resolution_clock::now();
sf::RectangleShape& shape = dynamic_cast<sf::RectangleShape&>(owning_entity.GetTransformable());
// Wrap entity around the side of the screen.
if (entity_pos.x < 0) {
sf::Vector2f new_pos(window_size.x - shape.getSize().x, owning_entity.GetTransformable().getPosition().y);
owning_entity.GetTransformable().setPosition(new_pos);
} else if (entity_pos.x > window_size.x) {
sf::Vector2f new_pos(shape.getSize().x, owning_entity.GetTransformable().getPosition().y);
owning_entity.GetTransformable().setPosition(new_pos);
}
if (entity_pos.y < 0) {
sf::Vector2f new_pos(owning_entity.GetTransformable().getPosition().x, window_size.y - shape.getSize().y);
owning_entity.GetTransformable().setPosition(new_pos);
} else if (entity_pos.y > window_size.y) {
sf::Vector2f new_pos(owning_entity.GetTransformable().getPosition().x, shape.getSize().y);
owning_entity.GetTransformable().setPosition(new_pos);
}
}
}
};
class SnakePlayerEntity;
class SnakeFoodEntity : public simpleengine::Entity {
private:
sf::RectangleShape shape;
sf::Vector2u window_size;
std::shared_ptr<SnakePlayerEntity> snake_player;
std::shared_ptr<simpleengine::CollisionComponent> collision_component;
public:
explicit SnakeFoodEntity(sf::Vector2u window_size, std::shared_ptr<SnakePlayerEntity> snake_player)
: Entity(shape), window_size(window_size), snake_player(snake_player) {
shape.setSize(sf::Vector2f(15, 15));
shape.setPosition(45, 45);
shape.setFillColor(sf::Color::Red);
collision_component = std::make_shared<simpleengine::CollisionComponent>(*this, shape, 0, 0, 15, 15);
AddComponent(collision_component);
}
void Move(const float& delta_time, const float& x, const float& y) override {
shape.move(x, y);
}
void Move(const float& delta_time, const sf::Vector2f& offset) override {
shape.move(offset * delta_time);
}
void Move(const sf::Vector2f& offset) override {
shape.move(offset);
}
void Render(sf::RenderTarget* target) override {
target->draw(shape);
}
// Find a new location for the snake food.
void Relocate() {
simpleengine::Random<int> random;
sf::Vector2f pos(random.NextInRange(0, window_size.x), random.NextInRange(0, window_size.y));
// Make sure its on the 15 pixel grid.
pos.x -= (int) pos.x % 15;
pos.y -= (int) pos.y % 15;
shape.setPosition(pos);
}
};
struct BodyPiece {
sf::RectangleShape shape;
sf::Vector2i movement_direction;
};
class SnakePlayerEntity : public simpleengine::Entity {
private:
sf::RectangleShape head;
std::vector<BodyPiece> body;
float movement_speed = 15;
sf::Vector2u window_size;
sf::Text& score_text;
std::shared_ptr<SnakeMovementComponent> movement_component;
std::shared_ptr<simpleengine::CollisionComponent> collision_component;
bool alive = true;
public:
explicit SnakePlayerEntity(sf::Vector2u window_size, sf::Text& score_text, simpleengine::Game& game) :
Entity(head), window_size(window_size), score_text(score_text) {
head = sf::RectangleShape(sf::Vector2f(15, 15));
head.setFillColor(sf::Color(220, 220, 220));
movement_component = std::make_shared<SnakeMovementComponent>(*this, movement_speed, window_size, game);
AddComponent(movement_component);
collision_component = std::make_shared<simpleengine::CollisionComponent>(*this, head, 0, 0, 15, 15);
collision_component->SetOnCollide(std::bind(&SnakePlayerEntity::OnCollide, this, std::placeholders::_1));
AddComponent(collision_component);
}
void Move(const float& delta_time, const float& x, const float& y) override {
if (alive) {
sf::FloatRect rect(head.getPosition(), head.getSize());
// Add movement to position
rect.left += x;
rect.top += y;
for (BodyPiece& piece : body) {
if (piece.movement_direction != sf::Vector2i(0, 0) && rect.intersects(piece.shape.getGlobalBounds())) {
alive = false;
break;
}
}
if (!alive) return;
head.move(x, y);
sf::Vector2i last_movement_dir(x, y);
for (BodyPiece& piece : body) {
piece.shape.move(piece.movement_direction.x, piece.movement_direction.y);
std::swap(last_movement_dir, piece.movement_direction);
// Wrap piece around the side of the screen.
sf::Vector2f piece_pos = piece.shape.getPosition();
if (piece_pos.x < 0) {
sf::Vector2f new_pos(window_size.x - piece.shape.getSize().x, piece_pos.y);
piece.shape.setPosition(new_pos);
} else if (piece_pos.x > window_size.x) {
sf::Vector2f new_pos(piece.shape.getSize().x, piece_pos.y);
piece.shape.setPosition(new_pos);
}
if (piece_pos.y < 0) {
sf::Vector2f new_pos(piece_pos.x, window_size.y - piece.shape.getSize().y);
piece.shape.setPosition(new_pos);
} else if (piece_pos.y > window_size.y) {
sf::Vector2f new_pos(piece_pos.x, piece.shape.getSize().y);
piece.shape.setPosition(new_pos);
}
}
}
}
void Move(const float& delta_time, const sf::Vector2f& offset) override {
head.move(offset * delta_time);
}
void Move(const sf::Vector2f& offset) override {
head.move(offset);
}
void Render(sf::RenderTarget* target) override {
target->draw(score_text);
target->draw(head);
for (const BodyPiece& piece : body) {
target->draw(piece.shape);
}
}
void OnCollide(std::shared_ptr<Entity> entity) {
if (std::shared_ptr<SnakeFoodEntity> shared = std::dynamic_pointer_cast<SnakeFoodEntity>(entity); shared) {
shared->Relocate();
BodyPiece piece{ sf::RectangleShape(sf::Vector2f(15, 15)), sf::Vector2i(0, 0) };
piece.shape.setFillColor(sf::Color::White);
if (body.empty()) {
piece.shape.setPosition(head.getPosition());
} else {
piece.shape.setPosition(body.back().shape.getPosition());
}
body.push_back(piece);
score_text.setString(std::to_string(body.size()));
}
}
};
int main(int argc, char *argv[]) {
sf::Vector2u window_size(495, 495);
simpleengine::Game game(window_size, "SimpleEngine - Snake Example");
sf::Font font;
if (!font.loadFromFile("arial.ttf")) {
std::cout << "Failed to find \"arial.ttf\"" << std::endl;
return 0;
}
sf::Text score_text;
score_text.setFont(font);
score_text.setString("0");
score_text.setCharacterSize(24);
score_text.setFillColor(sf::Color::Green);
score_text.setPosition(window_size.x - 50, 5);
auto snake_player = std::make_shared<SnakePlayerEntity>(window_size, score_text, std::ref(game));
auto snake_food = std::make_shared<SnakeFoodEntity>(window_size, snake_player);
game.AddEvent(new simpleengine::EntityEvent(game.GetWindow(), snake_food));
game.AddEvent(new simpleengine::EntityEvent(game.GetWindow(), snake_player));
game.AddEvent(new simpleengine::CollisionHandler(game));
return game.Run();
}

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//
// Created by SeanOMik on 7/5/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_ANIMATION_H
#define SIMPLEENGINE_ANIMATION_H
#include <SFML/Graphics.hpp>
namespace simpleengine {
class Animation {
public:
Animation(sf::Sprite &sprite, sf::Texture &texture_sheet, float speed, int start_frame_x,
int start_frame_y, int frame_ct_x, int frame_ct_y, int width, int height);
void Update(const float& delta_time);
void Reset();
void FlipHorizontally();
void FlipVertically();
bool IsHorizontallyFlipped() const;
bool IsVerticallyFlipped() const;
private:
sf::Sprite &sprite;
sf::Texture &texture_sheet;
float speed; // Speed is how long it takes until it swaps to next texture.
float timer;
int width;
int height;
sf::IntRect start_rect;
sf::IntRect current_rect;
sf::IntRect end_rect;
sf::Vector2f start_scale;
bool horizontally_flipped = false;
bool vertically_flipped = false;
};
}
#endif //SIMPLEENGINE_ANIMATION_H

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//
// Created by SeanOMik on 3/12/2021.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_ASYNC_EVENT_H
#define SIMPLEENGINE_ASYNC_EVENT_H
#include "event.h"
#include <functional>
#include <future>
#include <thread>
namespace simpleengine {
class AsyncEvent : public simpleengine::Event {
public:
explicit AsyncEvent(sf::RenderWindow* window = nullptr) : simpleengine::Event(window) {
update_thread = std::thread( [this]() {
while (!quit) {
std::unique_lock<std::mutex> unique_lock(mutex);
cond_var.wait(unique_lock);
// After waiting check if we're quiting and if we need to stop this thread.
if (quit) break;
AsyncUpdate(tick_delta_time);
}
});
}
virtual ~AsyncEvent() {
quit = true;
// Notify the async updating thread that we're quiting.
{
std::unique_lock<std::mutex> unique_lock(mutex);
cond_var.notify_all();
}
// Quit the async updating thread if its still running.
if (update_thread.joinable()) {
update_thread.join();
}
};
virtual void AsyncUpdate(const float delta_time) = 0;
// DO NOT OVERRIDE THIS FUNCTION
// Notify the update thread to trigger the async update.
virtual void Update(const float& delta_time) final {
std::unique_lock<std::mutex> unique_lock(mutex);
tick_delta_time = delta_time;
cond_var.notify_all();
}
virtual void Render(sf::RenderTarget* target) { };
protected:
std::mutex mutex;
std::condition_variable cond_var;
std::thread update_thread;
float tick_delta_time;
};
}
#endif //SIMPLEENGINE_ASYNC_EVENT_H

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_COMPONENT_H
#define SIMPLEENGINE_COMPONENT_H
#include "destructable.h"
#include <SFML/Graphics.hpp>
#include <memory>
namespace simpleengine {
class Entity;
class Component : public simpleengine::Destructable {
public:
explicit Component(Entity& owning_entity) : owning_entity(owning_entity) {
}
virtual ~Component() = default;
virtual void Update(const float& delta_time) = 0;
virtual void Render(sf::RenderTarget* target) {}; // Most components won't need to be rendered.
protected:
Entity& owning_entity;
bool destroying = false;
};
}
#endif //SIMPLEENGINE_COMPONENT_H

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//
// Created by SeanOMik on 7/4/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_ANIMATION_COMPONENT_H
#define SIMPLEENGINE_ANIMATION_COMPONENT_H
#include "../component.h"
#include "../animation.h"
#include <SFML/Graphics.hpp>
namespace simpleengine {
class Entity;
class AnimationComponent : public Component {
private:
sf::Sprite& sprite;
sf::Texture& texture_sheet;
std::map<std::string, Animation> animations;
public:
explicit AnimationComponent(Entity& owning_entity, sf::Sprite& sprite, sf::Texture& texture_sheet);
void Update(const float& delta_time) override;
void AddAnimation(const std::string& animation_name, float speed, int start_frame_x, int start_frame_y, int frame_ct_x,
int frame_ct_y, int width, int height);
void AddAnimation(const std::string& animation_name, simpleengine::Animation animation);
bool HasAnimation(const std::string& animation_name);
// Animation class specific
void UpdateAnimation(const std::string& animation_name, const float& delta_time);
Animation& GetAnimation(const std::string& animation_name);
sf::Sprite &GetSprite() const;
sf::Texture &GetTextureSheet() const;
const std::map<std::string, Animation> &GetAnimations() const;
};
}
#endif //SIMPLEENGINE_ANIMATION_COMPONENT_H

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//
// Created by SeanOMik on 7/6/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_COLLISION_COMPONENT_H
#define SIMPLEENGINE_COLLISION_COMPONENT_H
#include "../component.h"
#include "../entity.h"
#include <SFML/Graphics.hpp>
#include <SFML/Graphics/Transformable.hpp>
#include <functional>
namespace simpleengine {
class CollisionComponent : public Component {
private:
sf::Transformable& transformable;
sf::RectangleShape hitbox;
float offset_x;
float offset_y;
std::function<void(std::shared_ptr<Entity>)> collide_function;
public:
CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, float offset_x, float offset_y, float width, float height);
CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, sf::Vector2f offset, sf::Vector2f size);
CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, const sf::RectangleShape& hitbox, float offset_x, float offset_y);
CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, const sf::RectangleShape& hitbox, sf::Vector2f offset);
sf::RectangleShape& GetHitbox();
virtual bool DoesIntersect(const sf::FloatRect& rect) const;
virtual bool DoesIntersect(const sf::RectangleShape& rect) const;
virtual bool DoesIntersect(Entity& entity) const;
void Update(const float &delta_time) override;
void Render(sf::RenderTarget *target) override;
virtual void SetOnCollide(std::function<void(std::shared_ptr<Entity>)> func);
virtual void OnCollide(std::shared_ptr<Entity> collided_entity);
};
}
#endif //SIMPLEENGINE_COLLISION_COMPONENT_H

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_MOVEMENT_COMPONENT_H
#define SIMPLEENGINE_MOVEMENT_COMPONENT_H
#include "../../component.h"
#include <SFML/Graphics.hpp>
namespace simpleengine {
class Entity;
class Game;
class MovementComponent : public Component {
public:
MovementComponent(Entity& owning_entity, Game& game, float max_velocity, float acceleration = 7, float deceleration = 2.5);
void OnKeyPress(sf::Event::KeyEvent event);
void OnKeyRelease(sf::Event::KeyEvent event);
void Move(const float& delta_time, const float& dir_x, const float& dir_y);
void Update(const float& delta_time) override;
const sf::Vector2f& GetVelocity() const;
const sf::Vector2f& GetLastDirection() const;
private:
sf::Vector2f direction;
float max_velocity;
sf::Vector2f velocity;
sf::Vector2f last_direction;
float acceleration;
float deceleration;
};
}
#endif //SIMPLEENGINE_MOVEMENT_COMPONENT_H

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//
// Created by SeanOMik on 7/5/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_SSMA_COMPONENT_H
#define SIMPLEENGINE_SSMA_COMPONENT_H
#include "../component.h"
#include "animation_component.h"
#include "movement/movement_component.h"
#include <SFML/Graphics.hpp>
namespace simpleengine {
class Entity;
class Animation;
enum MovementAnimationType {
WALK_LEFT,
WALK_RIGHT,
IDLE_LEFT,
IDLE_RIGHT
};
// Use this for side scrollers!
class SideScrollerMovementAnimationComponent : public Component {
public:
SideScrollerMovementAnimationComponent(Entity& owning_entity, Game& game, sf::Sprite &sprite, sf::Texture &texture_sheet,
float max_velocity, float acceleration, float deceleration);
void SetAnimation(const MovementAnimationType& type, simpleengine::Animation animation);
void SetAnimation(const MovementAnimationType& type, float speed, int start_frame_x, int start_frame_y, int frame_ct_x, int frame_ct_y,
int width, int height);
void Update(const float& delta_time) override;
simpleengine::AnimationComponent& GetAnimationComponent();
simpleengine::MovementComponent& GetMovementComponent();
private:
std::string MovementAnimationTypeToStr(const MovementAnimationType& type);
simpleengine::AnimationComponent anim_component;
simpleengine::MovementComponent move_component;
};
}
#endif //SIMPLEENGINE_SSMA_COMPONENT_H

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//
// Created by SeanOMik on 3/12/2021.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_DESTRUCTABLE_H
#define SIMPLEENGINE_DESTRUCTABLE_H
namespace simpleengine {
class Destructable {
public:
virtual void Destroy() {
destroying = true;
}
virtual const bool& IsDestroying() const {
return destroying;
}
protected:
bool destroying = false;
};
}
#endif //SIMPLEENGINE_DESTRUCTABLE_H

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_ENTITY_H
#define SIMPLEENGINE_ENTITY_H
#include "destructable.h"
#include <SFML/Graphics.hpp>
#include <stdexcept>
#include <vcruntime_typeinfo.h>
#include <vector>
#include <memory>
#include <assert.h>
namespace simpleengine {
class Component;
class Game;
class Event;
class Entity : public simpleengine::Destructable {
friend class Game;
friend class Event;
public:
explicit Entity(sf::Transformable& transformable);
virtual ~Entity() = default;
Entity(const Entity& entity) = delete;
virtual void Move(const float& delta_time, const float& dir_x, const float& dir_y);
virtual void Move(const float& delta_time, const sf::Vector2f& offset);
virtual void Move(const sf::Vector2f& offset);
virtual void Render(sf::RenderTarget* target);
virtual void Update(const float& delta_time);
template<typename T>
bool HasComponent() const {
for (std::shared_ptr<Component> comp : components) {
if (std::dynamic_pointer_cast<T>(comp)) {
return true;
}
}
return false;
}
template<typename T>
std::shared_ptr<T> GetComponent() const {
for (std::shared_ptr<Component> comp : components) {
if (std::shared_ptr<T> dyn_comp = std::dynamic_pointer_cast<T>(comp); dyn_comp) {
return dyn_comp;
}
}
return nullptr;
}
void UpdateComponents(const float& delta_time);
void RenderComponents(sf::RenderTarget* target);
template<typename T>
void AddComponent(std::shared_ptr<T> component) {
static_assert(std::is_base_of_v<Component, T>, "Component class must derive from simpleengine::Component");
// Only allow one type of the same component.
assert(!HasComponent<T>());
components.push_back(component);
}
inline sf::Transformable& GetTransformable() {
return transformable;
}
protected:
sf::Transformable& transformable;
std::vector<std::shared_ptr<Component>> components;
bool destroying = false;
};
}
#endif //GAMEENGINE_ENTITY_H

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_EVENT_H
#define SIMPLEENGINE_EVENT_H
#include "destructable.h"
#include <SFML/Graphics.hpp>
namespace simpleengine {
class Event : public simpleengine::Destructable {
public:
explicit Event(sf::RenderWindow* window = nullptr) : window(window) {}
virtual ~Event() = default;
virtual void Update(const float& delta_time) = 0;
virtual void Render(sf::RenderTarget* target) = 0;
protected:
sf::RenderWindow* window;
bool quit = false;
};
}
#endif //GAMEENGINE_EVENT_H

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//
// Created by SeanOMik on 3/1/2021.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_COLLISION_HANDLER_H
#define SIMPLEENGINE_COLLISION_HANDLER_H
#include "../event.h"
#include "../entity.h"
namespace simpleengine {
class Game;
class CollisionHandler : public Event {
public:
explicit CollisionHandler(simpleengine::Game& game) : simpleengine::Event(nullptr), game(game) {
}
void Update(const float& delta_time) override;
void Render(sf::RenderTarget* target) override { }
void UpdateHandledEntities();
private:
std::vector<std::shared_ptr<Entity>> handled_entities;
simpleengine::Game& game;
};
}
#endif //SIMPLEENGINE_COLLISION_HANDLER_H

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//
// Created by SeanOMik on 7/3/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_ENTITY_EVENT_H
#define SIMPLEENGINE_ENTITY_EVENT_H
#include "../event.h"
#include "../entity.h"
namespace simpleengine {
class EntityEvent : public Event {
public:
explicit EntityEvent(sf::RenderWindow* window, std::shared_ptr<Entity> entity) : simpleengine::Event(window), entity(entity) {
}
void Update(const float& delta_time) override {
entity->Update(delta_time);
if (entity->IsDestroying()) {
quit = true;
}
}
void Render(sf::RenderTarget* target) override {
entity->Render(target);
}
std::shared_ptr<Entity> GetEntity() {
return entity;
}
private:
std::shared_ptr<Entity> entity;
};
}
#endif //SIMPLEENGINE_ENTITY_EVENT_H

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//
// Created by SeanOMik on 7/6/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#ifndef SIMPLEENGINE_RANDOM_H
#define SIMPLEENGINE_RANDOM_H
#include <limits>
#include <random>
#include <type_traits>
namespace simpleengine {
template<typename T, class RandomDevice = std::random_device, class Generator = std::mt19937>
class Random {
private:
RandomDevice rd;
Generator gen;
public:
Random() {
this->gen = Generator(rd());
}
template<typename Dist = std::conditional_t<std::is_same_v<T, int> || std::is_same_v<T, uint32_t>,
std::uniform_int_distribution<T>, std::uniform_real_distribution<T>>>
T NextInRange(T min, T max) {
Dist dist(min, max);
return dist(gen);
}
};
}
#endif //SIMPLEENGINE_RANDOM_H

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//
// Created by SeanOMik on 7/5/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "animation.h"
simpleengine::Animation::Animation(sf::Sprite &sprite, sf::Texture &texture_sheet, float speed, int start_frame_x,
int start_frame_y, int frame_ct_x, int frame_ct_y, int width, int height) : sprite(sprite), texture_sheet(texture_sheet),
speed(speed), start_rect(sf::IntRect(start_frame_x * width, start_frame_y * height, width, height)),
end_rect(sf::IntRect(frame_ct_x * width, frame_ct_y * height, width, height)), width(width), height(height) {
timer = 0;
// Set start of sprite.
this->sprite.setTexture(texture_sheet, true);
this->sprite.setTextureRect(start_rect);
this->start_scale = sprite.getScale();
this->current_rect = start_rect;
sprite.setOrigin({ static_cast<float>(sprite.getLocalBounds().width * 0.5), 0 });
}
void simpleengine::Animation::Update(const float& delta_time) {
// Update timer
timer += 100 * delta_time;
if (timer >= speed) {
// Reset animation
timer = 0;
// We have not reached the end, so change the texture.
if (current_rect != end_rect) {
current_rect.left += width;
} else {
current_rect.left = start_rect.left;
}
sprite.setTextureRect(current_rect);
}
}
void simpleengine::Animation::Reset() {
timer = 0;
current_rect = start_rect;
}
void simpleengine::Animation::FlipHorizontally() {
sf::Vector2f scale = sprite.getScale();
sprite.setScale(-scale.x, scale.y);
horizontally_flipped = !horizontally_flipped;
}
void simpleengine::Animation::FlipVertically() {
sf::Vector2f scale = sprite.getScale();
sprite.setScale(scale.x, -scale.y);
vertically_flipped = !vertically_flipped;
}
bool simpleengine::Animation::IsHorizontallyFlipped() const {
return horizontally_flipped;
}
bool simpleengine::Animation::IsVerticallyFlipped() const {
return vertically_flipped;
}

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//
// Created by SeanOMik on 7/4/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "components/animation_component.h"
#include "animation.h"
simpleengine::AnimationComponent::AnimationComponent(Entity& owning_entity, sf::Sprite& sprite, sf::Texture& texture_sheet)
: Component(owning_entity), sprite(sprite), texture_sheet(texture_sheet) {
}
void simpleengine::AnimationComponent::Update(const float& delta_time) {
}
void simpleengine::AnimationComponent::AddAnimation(const std::string& animation_name, float speed, int start_frame_x, int start_frame_y, int frame_ct_x,
int frame_ct_y, int width, int height) {
animations.emplace(animation_name, Animation(sprite, texture_sheet, speed, start_frame_x, start_frame_y, frame_ct_x, frame_ct_y, width, height));
}
void simpleengine::AnimationComponent::AddAnimation(const std::string& animation_name, simpleengine::Animation animation) {
animations.emplace(animation_name, animation);
}
void simpleengine::AnimationComponent::UpdateAnimation(const std::string &animation_name, const float& delta_time) {
auto anim = animations.find(animation_name);
if (anim != animations.end()) {
anim->second.Update(delta_time);
} else {
throw std::runtime_error("Animation, \"" + animation_name + "\", was not found!");
}
}
sf::Sprite &simpleengine::AnimationComponent::GetSprite() const {
return sprite;
}
sf::Texture &simpleengine::AnimationComponent::GetTextureSheet() const {
return texture_sheet;
}
const std::map<std::string, simpleengine::Animation> &simpleengine::AnimationComponent::GetAnimations() const {
return animations;
}
simpleengine::Animation& simpleengine::AnimationComponent::GetAnimation(const std::string &animation_name) {
auto anim = animations.find(animation_name);
if (anim != animations.end()) {
return anim->second;
} else {
throw std::runtime_error("Animation, \"" + animation_name + "\", was not found!");
}
}
bool simpleengine::AnimationComponent::HasAnimation(const std::string &animation_name) {
auto anim = animations.find(animation_name);
return anim != animations.end();
}

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//
// Created by SeanOMik on 7/6/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "components/collision_component.h"
#include "components/ssma_component.h"
#include "entity.h"
#include <SFML/Graphics/Rect.hpp>
#include <ostream>
simpleengine::CollisionComponent::CollisionComponent(Entity& owning_entity, sf::Transformable &transformable, float offset_x, float offset_y,
float width, float height) : simpleengine::CollisionComponent::CollisionComponent(owning_entity, transformable, sf::RectangleShape(), offset_x, offset_y) {
hitbox.setPosition(transformable.getPosition().x + offset_x, transformable.getPosition().y + offset_y);
hitbox.setSize(sf::Vector2f(width, height));
hitbox.setFillColor(sf::Color::Transparent);
hitbox.setOutlineThickness(1);
hitbox.setOutlineColor(sf::Color::Red);
}
simpleengine::CollisionComponent::CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, sf::Vector2f offset, sf::Vector2f size)
: simpleengine::CollisionComponent::CollisionComponent(owning_entity, transformable, offset.x, offset.y, size.x, size.y) {
}
simpleengine::CollisionComponent::CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, const sf::RectangleShape& hit,
float offset_x, float offset_y) : Component(owning_entity), transformable(transformable), hitbox(hit), offset_x(offset_x), offset_y(offset_y) {
// SSMA Component set's the sprites texture offset so we need to set
// the offset to the origin if the entity has the SSMA component.
if (auto ssma_comp = owning_entity.GetComponent<simpleengine::SideScrollerMovementAnimationComponent>(); ssma_comp) {
offset_x += ssma_comp->GetAnimationComponent().GetSprite().getGlobalBounds().width * -0.5f;
}
}
simpleengine::CollisionComponent::CollisionComponent(Entity& owning_entity, sf::Transformable& transformable, const sf::RectangleShape& hit,
sf::Vector2f offset) : simpleengine::CollisionComponent::CollisionComponent(owning_entity, transformable, hit, offset.x, offset.y) {
}
sf::RectangleShape &simpleengine::CollisionComponent::GetHitbox() {
return hitbox;
}
sf::FloatRect CreateBounds(sf::RectangleShape rect) {
return sf::FloatRect(rect.getPosition(), rect.getSize());
}
bool simpleengine::CollisionComponent::DoesIntersect(const sf::FloatRect &rect) const {
return CreateBounds(hitbox).intersects(rect);
}
bool simpleengine::CollisionComponent::DoesIntersect(const sf::RectangleShape &rect) const {
return CreateBounds(hitbox).intersects(CreateBounds(rect));
}
bool simpleengine::CollisionComponent::DoesIntersect(Entity& entity) const {
std::shared_ptr<simpleengine::CollisionComponent> other_collider = entity.GetComponent<simpleengine::CollisionComponent>();
if (other_collider) {
return other_collider->DoesIntersect(hitbox);
}
return false;
}
void simpleengine::CollisionComponent::Update(const float &delta_time) {
hitbox.setPosition(owning_entity.GetTransformable().getPosition().x + offset_x, owning_entity.GetTransformable().getPosition().y + offset_y);
}
void simpleengine::CollisionComponent::Render(sf::RenderTarget *target) {
//target->draw(hitbox);
}
void simpleengine::CollisionComponent::SetOnCollide(std::function<void(std::shared_ptr<Entity>)> func) {
collide_function = func;
}
void simpleengine::CollisionComponent::OnCollide(std::shared_ptr<Entity> collided_entity) {
if (collide_function) {
collide_function(collided_entity);
}
}

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//
// Created by SeanOMik on 7/2/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "components/movement/movement_component.h"
#include "entity.h"
#include "game.h"
#include <SFML/Window/Keyboard.hpp>
#include <algorithm>
#include <iostream>
simpleengine::MovementComponent::MovementComponent(Entity& owning_entity, Game& game, float max_velocity, float acceleration, float deceleration) :
Component(owning_entity), max_velocity(max_velocity), acceleration(acceleration), deceleration(deceleration) {
game.AddEventCallback<sf::Event::EventType::KeyPressed>(std::function([this](sf::Event::KeyEvent event) {
this->OnKeyPress(event);
}));
game.AddEventCallback<sf::Event::EventType::KeyReleased>(std::function([this](sf::Event::KeyEvent event) {
this->OnKeyRelease(event);
}));
}
void simpleengine::MovementComponent::Move(const float& delta_time, const float& dir_x, const float& dir_y) {
// Acceleration
velocity.x += acceleration * dir_x;
// Limit the horizontal velocity
if (velocity.x > 0) { // Right
velocity.x = std::min(velocity.x, max_velocity);
} else if (velocity.x < 0) { // Left
velocity.x = std::max(velocity.x, -max_velocity);
}
velocity.y += acceleration * dir_y;
// Limit the vertical velocity
if (velocity.y > 0) { // Up
velocity.y = std::min(velocity.y, max_velocity);
} else if (velocity.y < 0) { // Down
velocity.y = std::max(velocity.y, -max_velocity);
}
// Limit total velocity
float y_sq = velocity.y * velocity.y;
float x_sq = velocity.x * velocity.x;
float abs_sq = y_sq + x_sq;
if (abs_sq > max_velocity * max_velocity) {
float abs = sqrt(abs_sq);
velocity.x *= max_velocity / abs;
velocity.y *= max_velocity / abs;
}
owning_entity.Move(delta_time, velocity);
}
void simpleengine::MovementComponent::OnKeyPress(sf::Event::KeyEvent event) {
sf::Keyboard::Key key = event.code;
switch(key) {
case sf::Keyboard::W:
direction.y = -1;
break;
case sf::Keyboard::A:
direction.x = -1;
break;
case sf::Keyboard::S:
direction.y = 1;
break;
case sf::Keyboard::D:
direction.x = 1;
break;
default:
break;
}
}
void simpleengine::MovementComponent::OnKeyRelease(sf::Event::KeyEvent event) {
sf::Keyboard::Key key = event.code;
switch(key) {
case sf::Keyboard::W:
direction.y = (!sf::Keyboard::isKeyPressed(sf::Keyboard::S)) ? 0 : 1;
break;
case sf::Keyboard::A:
direction.x = (!sf::Keyboard::isKeyPressed(sf::Keyboard::D)) ? 0 : 1;
break;
case sf::Keyboard::S:
direction.y = (!sf::Keyboard::isKeyPressed(sf::Keyboard::W)) ? 0 : -1;
break;
case sf::Keyboard::D:
direction.x = (!sf::Keyboard::isKeyPressed(sf::Keyboard::A)) ? 0 : -1;
break;
default:
break;
}
}
void simpleengine::MovementComponent::Update(const float& delta_time) {
// If we're not moving from deceleration or player input, then reset velocity.
bool no_movement = true;
if (velocity.y > 0) {
if (velocity.y > max_velocity) {
velocity.y = max_velocity;
}
velocity.y -= deceleration;
if (velocity.y < 0) {
velocity.y = 0;
}
owning_entity.Move(velocity * delta_time);
no_movement = false;
} else if (velocity.y < 0) {
if (velocity.y < -max_velocity) {
velocity.y = -max_velocity;
}
velocity.y += deceleration;
if (velocity.y > 0) {
velocity.y = 0;
}
owning_entity.Move(velocity * delta_time);
no_movement = false;
}
if (velocity.x > 0) {
if (velocity.x > max_velocity) {
velocity.x = max_velocity;
}
velocity.x -= deceleration;
if (velocity.x < 0) {
velocity.x = 0;
}
owning_entity.Move(velocity * delta_time);
no_movement = false;
} else if (velocity.x < 0) {
if (velocity.x < -max_velocity) {
velocity.x = -max_velocity;
}
velocity.x += deceleration;
if (velocity.x > 0) {
velocity.x = 0;
}
owning_entity.Move(velocity * delta_time);
no_movement = false;
}
if (direction.x != 0 || direction.y != 0) {
last_direction = direction;
Move(delta_time, direction.x, direction.y);
no_movement = false;
}
if (no_movement) {
velocity = sf::Vector2f();
}
}
const sf::Vector2f &simpleengine::MovementComponent::GetVelocity() const {
return velocity;
}
const sf::Vector2f &simpleengine::MovementComponent::GetLastDirection() const {
return last_direction;
}

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//
// Created by SeanOMik on 7/5/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "components/ssma_component.h"
simpleengine::SideScrollerMovementAnimationComponent::SideScrollerMovementAnimationComponent(simpleengine::Entity &owning_entity,
Game& game, sf::Sprite &sprite, sf::Texture &texture_sheet, float max_velocity, float acceleration, float deceleration)
: Component(owning_entity), anim_component(owning_entity, sprite, texture_sheet),
move_component(owning_entity, game, max_velocity, acceleration, deceleration) {
}
void simpleengine::SideScrollerMovementAnimationComponent::SetAnimation(const simpleengine::MovementAnimationType &type,
simpleengine::Animation animation) {
anim_component.AddAnimation(MovementAnimationTypeToStr(type), animation);
}
void simpleengine::SideScrollerMovementAnimationComponent::SetAnimation(const simpleengine::MovementAnimationType &type,
float speed, int start_frame_x, int start_frame_y, int frame_ct_x, int frame_ct_y, int width, int height) {
anim_component.AddAnimation(MovementAnimationTypeToStr(type), speed, start_frame_x, start_frame_y,
frame_ct_x, frame_ct_y, width, height);
}
void simpleengine::SideScrollerMovementAnimationComponent::Update(const float& delta_time) {
move_component.Update(delta_time);
if (move_component.GetVelocity().x > 0) { // Moving right
// If the user never set a WALK_RIGHT animation, then we need to flip the WALK_LEFT one.
if (anim_component.HasAnimation("WALK_RIGHT")) {
Animation& anim = anim_component.GetAnimation("WALK_RIGHT");
if (anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
} else {
Animation& anim = anim_component.GetAnimation("WALK_LEFT");
if (!anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
}
} else if (move_component.GetVelocity().x < 0) { // Moving left
// If the user never set a WALK_LEFT animation, then we need to flip the WALK_RIGHT one.
if (anim_component.HasAnimation("WALK_LEFT")) {
Animation& anim = anim_component.GetAnimation("WALK_LEFT");
if (anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
} else {
Animation& anim = anim_component.GetAnimation("WALK_RIGHT");
if (!anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
}
} else {
// If the user never set an IDLE_RIGHT animation, then we need to flip the IDLE_LEFT one.
if (move_component.GetLastDirection().x > 0) { // Facing right
if (anim_component.HasAnimation("IDLE_RIGHT")) {
Animation& anim = anim_component.GetAnimation("IDLE_RIGHT");
if (anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
} else {
Animation& anim = anim_component.GetAnimation("IDLE_LEFT");
anim.Update(delta_time);
}
} else if (move_component.GetLastDirection().x < 0) { // Facing left
if (anim_component.HasAnimation("IDLE_LEFT")) {
Animation& anim = anim_component.GetAnimation("IDLE_LEFT");
if (anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
} else {
Animation& anim = anim_component.GetAnimation("IDLE_RIGHT");
anim.Update(delta_time);
}
} else {
// If the user never set an IDLE_LEFT animation, then we need to flip the IDLE_RIGHT one.
if (anim_component.HasAnimation("IDLE_LEFT")) {
Animation& anim = anim_component.GetAnimation("IDLE_LEFT");
if (anim.IsHorizontallyFlipped()) {
anim.FlipHorizontally();
}
anim.Update(delta_time);
} else {
Animation& anim = anim_component.GetAnimation("IDLE_RIGHT");
anim.Update(delta_time);
}
}
}
}
std::string simpleengine::SideScrollerMovementAnimationComponent::MovementAnimationTypeToStr(
const simpleengine::MovementAnimationType &type) {
switch (type) {
case WALK_LEFT:
return "WALK_LEFT";
case WALK_RIGHT:
return "WALK_RIGHT";
case IDLE_LEFT:
return "IDLE_LEFT";
case IDLE_RIGHT:
return "IDLE_RIGHT";
default:
return "UNKNOWN_MOVEMENT_ANIMATION_TYPE";
}
}
simpleengine::AnimationComponent& simpleengine::SideScrollerMovementAnimationComponent::GetAnimationComponent() {
return anim_component;
}
simpleengine::MovementComponent& simpleengine::SideScrollerMovementAnimationComponent::GetMovementComponent() {
return move_component;
}

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//
// Created by SeanOMik on 7/3/2020.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "entity.h"
#include "component.h"
simpleengine::Entity::Entity(sf::Transformable &transformable) : transformable(transformable) {
}
void simpleengine::Entity::Move(const float &delta_time, const float &dir_x, const float &dir_y) {
transformable.setPosition(dir_x * delta_time, dir_y * delta_time);
}
void simpleengine::Entity::Move(const float &delta_time, const sf::Vector2f &offset) {
transformable.move(offset * delta_time);
}
void simpleengine::Entity::Move(const sf::Vector2f &offset) {
transformable.move(offset);
}
void simpleengine::Entity::Render(sf::RenderTarget *target) {
RenderComponents(target);
}
void simpleengine::Entity::Update(const float &delta_time) {
UpdateComponents(delta_time);
}
void simpleengine::Entity::UpdateComponents(const float& delta_time) {
// Update each component and if they are being destroyed, destroy them.
for (std::vector<std::shared_ptr<Component>>::iterator it = components.begin(); it != components.end(); ) {
(*it)->Update(delta_time);
if ((*it)->IsDestroying()) {
it = components.erase(it);
} else {
++it;
}
}
}
void simpleengine::Entity::RenderComponents(sf::RenderTarget* target) {
for (std::shared_ptr<Component>& component : components) {
component->Render(target);
}
}

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src/events/collision_handler.cpp
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//
// Created by SeanOMik on 3/1/2021.
// Github: https://github.com/SeanOMik
// Email: seanomik@gmail.com
//
#include "events/collision_handler.h"
#include "components/collision_component.h"
#include "entity.h"
#include "events/entity_event.h"
#include "game.h"
#include <algorithm>
void simpleengine::CollisionHandler::Update(const float& delta_time) {
// Update list of handled entities.
handled_entities.erase(std::remove_if(handled_entities.begin(), handled_entities.end(),
[](std::shared_ptr<simpleengine::Entity> ptr) { return ptr == nullptr; }), handled_entities.end());
for (simpleengine::Event* event : game.events) {
auto* entity_event = dynamic_cast<simpleengine::EntityEvent*>(event);
if (entity_event) {
std::shared_ptr<simpleengine::Entity> entity = entity_event->GetEntity();
if (std::count(handled_entities.begin(), handled_entities.end(), entity) == 0) {
handled_entities.push_back(entity);
}
}
}
// Check for collisions in all entities.
for (std::shared_ptr<Entity> entity : handled_entities) {
std::shared_ptr<CollisionComponent> entity_col = entity->GetComponent<simpleengine::CollisionComponent>();
if (entity_col) {
for (std::shared_ptr<Entity> two : handled_entities) {
if (two == entity) continue;
std::shared_ptr<CollisionComponent> two_col = two->GetComponent<simpleengine::CollisionComponent>();
if (two_col) {
if (entity_col->DoesIntersect(two_col->GetHitbox())) {
entity_col->OnCollide(two);
}
}
}
}
}
}