holesome/src/game/physics/map_player.hpp

#ifndef HOLESOME_MAP_PLAYER_HPP
#define HOLESOME_MAP_PLAYER_HPP


#include <box2d/box2d.h>
#include "../player/player.hpp"
#include "../../config.h"

struct MapPlayer
{
    Player *player;
    b2Body *body;

    MapPlayer(Player *player, b2Body *body) : player(player), body(body)
    {}

    void updateSimulationPosition() const
    {
        auto coordinates = player->coordinates->world();
        b2Vec2 playerPosition = b2Vec2(coordinates.x, coordinates.y);

        // Calculate velocity that theoretically needs to be applied to the body, to get to the same position
        b2Vec2 delta = playerPosition - body->GetPosition();
        b2Vec2 velocity = {delta.x * FRAME_RATE, delta.y * FRAME_RATE};

        body->SetLinearVelocity(velocity);
    }

    void updatePlayerPosition() const
    {
        b2Vec2 playerPosition = body->GetPosition();
        player->coordinates->set(sf::Vector2f(playerPosition.x, playerPosition.y));
    }
};


#endif //HOLESOME_MAP_PLAYER_HPP