main.js

const carCanvas = document.getElementById("carCanvas");
carCanvas.width = 200;
const networkCanvas = document.getElementById("networkCanvas");
networkCanvas.width = 300;

const carCtx = carCanvas.getContext("2d");
const networkCtx = networkCanvas.getContext("2d");

const road = new Road(carCanvas.width / 2, carCanvas.width * 0.9);

const N = 100;
const cars = generateCars(N);
let bestCar = cars[0];
if (localStorage.getItem("bestBrain")) {
    for (let i = 0; i < cars.length; i++) {
        cars[i].brain = JSON.parse(
            localStorage.getItem("bestBrain"));
        if (i != 0) {
            NeuralNetwork.mutate(cars[i].brain, 0.1);
        }
    }
}

// const traffic = [
//     new Car(road.getLaneCenter(1), -100, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(0), -300, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(2), -300, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(0), -500, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(1), -500, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(1), -700, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(2), -700, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(1), -900, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(2), -900, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(1), -1100, 30, 50, "DUMMY", 4, getRandomColor()),
//     new Car(road.getLaneCenter(2), -1100, 30, 50, "DUMMY", 4, getRandomColor()),
// ];
const traffic = []
lanes = [0, 1, 2, 3]
number_of_cars = [0, 1, 2]
for (let i = 1; i < 100; i += 2) {
    let noc = number_of_cars[Math.floor(Math.random() * number_of_cars.length)]
    for (let j = 0; j < noc; j++) {
        let l = lanes[Math.floor(Math.random() * lanes.length)]
        const c = new Car(road.getLaneCenter(l), i*-100, 30, 50, "DUMMY", 4, getRandomColor())
        traffic.push(c)
    }
}

animate();

function save() {
    localStorage.setItem("bestBrain",
        JSON.stringify(bestCar.brain));
}

function discard() {
    localStorage.removeItem("bestBrain");
}

function generateCars(N) {
    const cars = [];
    for (let i = 1; i <= N; i++) {
        cars.push(new Car(road.getLaneCenter(1), 100, 30, 50, "AI", 5));
    }
    return cars;
}

function animate(time) {
    for (let i = 0; i < traffic.length; i++) {
        traffic[i].update(road.borders, []);
    }
    for (let i = 0; i < cars.length; i++) {
        cars[i].update(road.borders, traffic);
    }
    bestCar = cars.find(
        c => c.y == Math.min(
            ...cars.map(c => c.y)
        ));

    carCanvas.height = window.innerHeight;
    networkCanvas.height = window.innerHeight;

    carCtx.save();
    carCtx.translate(0, -bestCar.y + carCanvas.height * 0.7);

    road.draw(carCtx);
    for (let i = 0; i < traffic.length; i++) {
        traffic[i].draw(carCtx);
    }
    carCtx.globalAlpha = 0.2;
    for (let i = 0; i < cars.length; i++) {
        cars[i].draw(carCtx);
    }
    carCtx.globalAlpha = 1;
    bestCar.draw(carCtx, true);

    carCtx.restore();

    networkCtx.lineDashOffset = -time / 50;
    Visualizer.drawNetwork(networkCtx, bestCar.brain);
    requestAnimationFrame(animate);
}