/// <summary>
/// Method moves snake's head and tail if needed. it also put a new food if it was eaten
/// </summary>
/// <param name="snake">snake to be moves</param>
/// <param name="dir">direction that snake should follow</param>
/// <param name="im">array of images for the snake</param>
private void makemove(Snake snake, int dir, Image[] im)
{
Coordinates c = snake.moveHead(dir);
if (c.inRange())
{ //doesn't allow outofboundsexception
if (picb[c.getX(), c.getY()].Image == null)
{ //if head ocupies empty cell, then move tail
setHeadLabel(snake.getHead().getBone(), im);
setBoneLabel(snake.getHead().getNext().getBone(), im);
c = snake.moveTail();
picb[c.getX(), c.getY()].Image = null;
if (snake.getHead() != snake.getTail())
{
setTailLabel(snake.getTail().getBone(), im);
}
}
else if (picb[c.getX(), c.getY()].Image == images[10])
{// if head occupies cell with food, then tail should not be moved to inctease snake's length. put new food
setHeadLabel(snake.getHead().getBone(), im);
if (points == 0)
{
setTailLabel(snake.getTail().getBone(), im);
}
else
{
setBoneLabel(snake.getHead().getNext().getBone(), im);
}
points++;
if (iftwo)
{
label3.Text = "Yellow " + (this.snake.getLength() - 1).ToString() + ":" + (this.snake2.getLength() - 1).ToString() + " Red";
}
else
{
label3.Text = points.ToString();
}
if (sound != null)
{
sound.Play();
}
putFood();
switch (points)
{
case 5: step.Interval = 400; break;
case 10: step.Interval = 350; break;
case 20: step.Interval = 300; break;
case 40: step.Interval = 250; break;
case 66: step.Interval = 200; break;
case 88: step.Interval = 100; break;
}
}
// snake pumps into a rock
else if ((picb[c.getX(), c.getY()].Image == rock))
{
gameOver("OUPS! One silly snake but bumped into the rock! Do you want to try with another one? Otherwise you return to menu.");
}
// snake eats itself
else
{
gameOver("OUPS! One snake is not in mood today. It tries to bite itself or others. Do you want to try with another one? Otherwise you return to menu.");
}
}
// snake bumps into the wall
else
{
gameOver("OUPS! One cunning snake tryed to escape, but bumped into the wall! Do you want to try with another one? Otherwise you return to menu.");
}
}
/// <summary>
/// Method to check if two objects of Coordinates class point to the same position, i.e. has the same coordinates
/// </summary>
/// <param name="c">Coordinates object for comparison</param>
/// <returns>true if objects points to the same coordinates</returns>
public Boolean equal(Coordinates c)
{
return(c.getX() == x && c.getY() == y);
}