package de.hems.trafficsim;

import java.util.Random;

public class Vehicle {
    protected int id;
    protected float position;
    protected float curVelocity;
    protected float maxVelocity;
    protected float brakeProp;
    protected float trackLength;


    public Vehicle(int id, int position, float maxVelocity, float brakeProp, float trackLength) {
        this.id = id;
        this.position = position;
        this.maxVelocity = maxVelocity;
        this.brakeProp = brakeProp;
        this.curVelocity = 0;
        this.trackLength = trackLength;

    }

    public float getPosition() {
        return position;
    }

    public float getCurVelocity() {
        return curVelocity;
    }

    public float getMaxVelocity() {
        return maxVelocity;
    }

    public void updateVelocity(float distanceForerunner, float timeStep) {
        Random random = new Random();

        float r = random.nextFloat();

        if (curVelocity < maxVelocity) {
            curVelocity = curVelocity + 1*timeStep;
        }
        if (r < brakeProp && curVelocity > 0) {
            curVelocity = getCurVelocity() - 1;
            if (curVelocity < 0)
                curVelocity = 0;
        }
        float distance = this.curVelocity * timeStep;
        if (distance > distanceForerunner) {
            curVelocity = distanceForerunner/timeStep;
        }
    }

    public void timeElapse(float timeStep) {
        position = (position + curVelocity*timeStep) % this.trackLength;
    }

}