void sizeChange(ContinuousSnake snake) // random amount of size change to snake
{
// get random amount to add or remove
int delta = mainForm.engine.GetRandom(-BodyPart.SIZE * 4, BodyPart.SIZE * 4);
snake.ChangeSize(delta);
finalize();
Finalized = true; // set flag up for deletion by game engine
}
void sizeScale(ContinuousSnake snake) // randomly scale snake size
{
// list of possible scales
double[] validScales = new double[] { 0.8, 1.5, 2, 2.5 }; // 6 possible scales
// get random scale factor
int random = mainForm.engine.GetRandom(0, 5); double scale = validScales[random];
// get current length of snake and get size change
int length = snake.Length;
int newLength = (int)(length * scale + 0.5); // get new length (add 0.5 to round)
int delta = newLength - length;
snake.ChangeSize(delta);
finalize();
Finalized = true;
}
void foodCollision(ContinuousSnake snake)
{
// check for collision with food
for (int i = 0; i < foodItems.Count; i++)
{
// retrieve current food item
Food food = foodItems[i];
if ((snake.Collided(food.picBox) & ContinuousSnake.HEAD_COLLISION) != 0) // check for head collision
{
snake.ChangeSize(food.Change); // change snake size depending on food
// delete the food item
food.finalize();
foodItems.Remove(food);
// subtract one from i to stop from skipping food items
i--;
}
}
}