/// <summary>
/// Constructs a car with the given x velocity
/// </summary>
/// <param name="direction">the car direction</param>
/// <param name="sprite">the sprite for the car</param>
/// <param name="x">the x location of the center of the projectile</param>
/// <param name="y">the y location of the center of the projectile</param>
/// <param name="xVelocity">the x velocity for the projectile</param>
public Car(GameConstants.Direction direction, Texture2D sprite, int x, int y,
float xVelocity)
{
this.carDirection = direction;
this.sprite = sprite;
this.x_Velocity = xVelocity;
this.drawRectangle = new Rectangle(x - this.sprite.Width / 2,
y - this.sprite.Height / 2, this.sprite.Width,
this.sprite.Height);
}
//This function generates new car without overlappings
private void SpawnCar()
{
//this is here to avoid overlapping of two consecutive cars
this.prevCar = this.currentCar;
Car tempCar;
int randCar = my_rand.Next(GameConstants.CARS_NUMBER); //set picture for car
GameConstants.Direction tempDirection = this.getDirection(my_rand.Next(2)); //set direction for car
int linePosition = 0; // init line in apropriate direction
int temp_x = 0; // init position
int randVelocity = 0; // init random velocity
//new car generation
while (this.currentCar == this.prevCar)
{
if (tempDirection == GameConstants.Direction.Right)
{
temp_x = -100;
int tempLine = my_rand.Next(3);
if (tempLine == GameConstants.SLOW_LINE)
{
linePosition = GameConstants.LINE3_POSITION;
currentCar = 3;
randVelocity = GameConstants.SLOW_CAR_SPEED;
}
else if (tempLine == GameConstants.MEDIAN_LINE)
{
linePosition = GameConstants.LINE2_POSITION;
currentCar = 4;
randVelocity = GameConstants.MEDIAN_CAR_SPEED;
}
else
{
linePosition = GameConstants.LINE1_POSITION;
currentCar = 5;
randVelocity = GameConstants.FAST_CAR_SPEED;
}
}
else // if direction of the car is to the left
{
temp_x = GameConstants.WINDOW_WIDTH + 100;
int tempLine = my_rand.Next(3);
if (tempLine == GameConstants.SLOW_LINE)
{
linePosition = GameConstants.LINE4_POSITION;
currentCar = 0;
randVelocity = GameConstants.SLOW_CAR_SPEED;
}
else if (tempLine == GameConstants.MEDIAN_LINE)
{
linePosition = GameConstants.LINE5_POSITION;
currentCar = 1;
randVelocity = GameConstants.MEDIAN_CAR_SPEED;
}
else
{
linePosition = GameConstants.LINE6_POSITION;
currentCar = 2;
randVelocity = GameConstants.FAST_CAR_SPEED;
}
}
}
//add this generated car
if (tempDirection == GameConstants.Direction.Right)
{
tempCar = new Car(tempDirection, this.rightCarPictures[randCar], temp_x, linePosition, randVelocity);
}
else //if direction of the car is to the left
{
tempCar = new Car(tempDirection, this.leftCarPictures[randCar], temp_x, linePosition, randVelocity);
}
this.cars.Add(tempCar);
}
