Boid.cpp

#define _USE_MATH_DEFINES
#include <cmath>
#include <vector>

#include "Boid.h"
#include "Vec2.h"

#include <iostream>
#include <fstream>

using namespace std;

Boid::Boid(float x, float y) {
    position = Vec2(x, y);

    float phi = 2 * M_PI * ((float)rand()/RAND_MAX);
    velocity = Vec2(.5 * cos(phi), .5 *sin(phi));

    acceleration = Vec2(0, 0);
}

void Boid::update() {
    position.addV(velocity);
    velocity.addV(acceleration);
}

// void Boid::set_all(const char* input) {
//     istringstream iss(input);
//     string s;
//     vector<string> values;
//     while ( getline( iss, s, ' ' ) ) {
//         values.push_back(s);
//     }
//     float position_x = stof(values[0]);
//     float position_y = stof(values[1]);
//     float velocity_x = stof(values[2]);
//     float velocity_y = stof(values[3]);
//
//     position.x = position_x;
//     position.y = position_y;
//
//     velocity.x = velocity_x;
//     velocity.y = velocity_y;
// }

void Boid::output(ofstream& out) {
    out << position.x << " " << position.y;
    // out << acceleration.x << " " << acceleration.y << endl;
    out << " " << velocity.x << " " << velocity.y << endl;

}