private void timer1_Tick(object sender, EventArgs e)
{
if (snake.Head.data.HitBox.IntersectsWith(food.HitBox))
{
x = rand.Next(30, canvas.Width - 30);
y = rand.Next(30, canvas.Height - 30);
if (x % 30 > 0)
{
while (x % 30 > 0)
{
x = rand.Next(30, canvas.Width - 30);
}
}
if (y % 30 > 0)
{
while (y % 30 > 0)
{
y = rand.Next(30, canvas.Height - 30);
}
}
food.X = x;
food.Y = y;
Snake Tail = snake.Tail.data;
if (currentDirection == direction.left)
{
snakebody = new Snake(Tail.X + Tail.W, Tail.Y, 30, 30, 10, 3);
}
else if (currentDirection == direction.right)
{
snakebody = new Snake(Tail.X - Tail.W, Tail.Y, 30, 30, 10, 4);
}
else if (currentDirection == direction.up)
{
snakebody = new Snake(Tail.X, Tail.Y - Tail.W, 30, 30, 10, 1);
}
else if (currentDirection == direction.down)
{
snakebody = new Snake(Tail.X, Tail.Y + Tail.W, 30, 30, 10, 2);
}
snake.AddNodeToLast(snakebody);
score += 10;
label1.Text = $"Score: {score}";
}
g.FillRectangle(Brushes.DimGray, 0, 0, canvas.Width, canvas.Height);
pictureBox1.Image = canvas;
CircularLinkedListNode <Snake> runner = snake.Head;
for (int i = 0; i < snake.Count; i++)
{
runner.data.Draw(g);
runner = runner.next;
}
food.Draw(g);
if (snake.Head.data.X < 0 || snake.Head.data.Y < 0 || snake.Head.data.X + snake.Head.data.W > canvas.Width || snake.Head.data.Y + snake.Head.data.H > canvas.Height)
{
timer1.Enabled = false;
restart = true;
score = 0;
MessageBox.Show("Game Over.");
MessageBox.Show("Press any button to restart.");
}
else
{
runner = snake.Head;
if (currentDirection == direction.left)
{
snake.Head.data.X -= snake.Head.data.S;
}
if (currentDirection == direction.right)
{
snake.Head.data.X += snake.Head.data.S;
}
if (currentDirection == direction.up)
{
snake.Head.data.Y -= snake.Head.data.S;
}
if (currentDirection == direction.down)
{
snake.Head.data.Y += snake.Head.data.S;
}
for (int i = snake.Count - 1; i > 0; i--)
{
if (i == 1)
{
runner.data.X = previousX;
runner.data.Y = previousY;
}
if (snake.Count > 1)
{
runner.data.X = runner.prev.data.X;
runner.data.Y = runner.prev.data.Y;
}
runner = runner.next;
if (snake.Head.data.HitBox.IntersectsWith(runner.data.HitBox) && runner.data != snake.Head.next.data)
{
timer1.Enabled = false;
restart = true;
MessageBox.Show("Game Over.");
MessageBox.Show("Press any button to restart.");
}
}
previousX = snake.Head.data.X;
previousY = snake.Head.data.Y;
}
}
