void InitialMysterySpawn()
{
// spawn mysteryboxes in the spawn areas at beginning of game
for (int i = 0; i < mysterySpawns.Length; i++)
{
// retrieve the spawn
PictureBox spawn = mysterySpawns[i];
MysteryBox box = new MysteryBox(spawn.Location.X, spawn.Location.Y, this); // spawn a mysterbox in the location
engine.mysteryBoxes.Add(box); // register it with the engine
// add it to the list of fixed mysterboxes
fixedBoxes[i] = box;
}
}
// check if collided with snake or food
public bool Collided(MysteryBox box, List <ContinuousSnake> snakes, List <MysteryBox> boxes)
{
foreach (ContinuousSnake snake in snakes) // check all snakes
{
if (snake.Collided(box.picBox) != 0) // if not zero, collided with food
{
return(true);
}
}
foreach (MysteryBox mbox in boxes) // check all food items
{
if (mbox.picBox.Bounds.IntersectsWith(box.picBox.Bounds))
{
return(true);
}
}
return(false); // if function reached here, no collision happened
}
public void Spawn(List <ContinuousSnake> snakes, List <MysteryBox> boxes) // spawn food in the area
{
int x = engine.GetRandom(Bounds.X, Bounds.X + Bounds.Width - BodyPart.SIZE); // subtract bodypart size because apple could be out of bounds
int y = engine.GetRandom(Bounds.Y, Bounds.Height + Bounds.Y - BodyPart.SIZE);
// make new apple
MysteryBox box = new MysteryBox(x, y, engine.mainForm);
// make sure not collided with snakes or other food items
if (Collided(box, snakes, boxes))
{
// delete the food item
box.finalize();
// run function again to try to get another position
Spawn(snakes, boxes);
}
else
{
engine.mysteryBoxes.Add(box); // register it
}
}
// perform extrawork during frame update
public override void ExtraWork(object o, EventArgs e)
{
base.ExtraWork(o, e);
for (int i = 0; i < fixedBoxes.Length; i++) // check all mysteryboxes
{
// retrieve the box
MysteryBox box = fixedBoxes[i];
if (box.Finalized) // if its finalized and no snake is in the location, make a new mystery box in the location
{
// check if a snake is the location of the box
bool snakePresent = false;
foreach (ContinuousSnake snake in engine.snakes)
{
if (snake.Collided(mysterySpawns[i]) != 0) // if its not zero, a snake collided with the box
{
snakePresent = true;
break;
}
}
// if a snake is not present, spawn a mysterybox there
if (!snakePresent)
{
// retrieve the location of this mysterybox spawn
Point spawn = mysterySpawns[i].Location;
// make a new mysterbox in the location of the spawn point
fixedBoxes[i] = new MysteryBox(spawn.X, spawn.Y, this);
engine.mysteryBoxes.Add(fixedBoxes[i]);// register it with the engine
}
}
if (snake.Collided(Gate) != 0)
{
snake.snakeHead.picBox.SendToBack();
}
}
// show the size of the snake
txtSize.Text = string.Format("{0:0.#}", (double)snake.Length / (double)BodyPart.SIZE);
}