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/**
* @file player.hpp
* Manages player input.
*
* Copyright (C) 2019 Clyne Sullivan
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SYSTEM_PLAYER_HPP_
#define SYSTEM_PLAYER_HPP_
#include <SDL2/SDL.h>
#include <entityx/entityx.h>
#include "components/Player.hpp"
#include "input.hpp"
/**
* @class PlayerSystem
* Controls player entity movement.
*/
class PlayerSystem : public entityx::System<PlayerSystem>,
public entityx::Receiver<PlayerSystem>
{
private:
/**
* Defines player's horizontal movement velocity.
*/
constexpr static double GROUND_VELOCITY = 100;
entityx::Entity player;
public:
/**
* Prepares the system for running.
*/
void configure(entityx::EntityManager& entities,
entityx::EventManager& events) final;
/**
* Updates the scripting system.
*/
void update(entityx::EntityManager& entites,
entityx::EventManager& events,
entityx::TimeDelta dt) final;
/**
* Captures the player entity.
*/
void receive(const entityx::ComponentAddedEvent<Player>& cae);
/**
* Invalidates the system's player entity (assume player is gone).
*/
void receive(const entityx::ComponentRemovedEvent<Player>& cre);
/**
* Applies velocity based on key press.
*/
void receive(const KeyDownEvent& kue);
/**
* Removes applied velocity
*/
void receive(const KeyUpEvent& kue);
};
#endif // SYSTEM_PLAYER_HPP_
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