#pragma once
#include "board.hpp"
#include "pedestrian.hpp"
#include <cmath>

// $\tau_{\alpha}$
const double tau_alpha = 0.5;

// $V^0_{\alpha \beta}$
const double V0_AB = 2.1;

// $\sigma$
const double SIGMA = 0.3;

// $U^0_{\alpha B}$
const double U0_AB = 10.0;

// $R$
const double R = 0.2;

// $c$
const double c = 0.5;

// $\varphi$
const double phi = 100.0 / 180.0 * M_PI;

const double cos_phi = cos(phi);

// $\varDelta_{t}$
// step size = 0.2 seconds
const double delta_t = 2;

const double dt = 0.001;

// # Optional (forces.cpp: compute_repulsive_effects_from_pedestrians)
// const double DISTANCE = 2.0;

double w(Vector2d e, Vector2d f);

double g(double v_max_alpha, double w_alpha_norm);

void compute_acceleration_term(Pedestrian *p);

void compute_repulsive_effects_from_pedestrians(Pedestrian *P, Pedestrian *p, int N);

void compute_repulsive_effects_from_borders(Board &B, Pedestrian *p);