// check for snake collisions
bool CheckSnakeCollisions(ContinuousSnake testSnake)
{
foreach (ContinuousSnake snake in snakes)
{
// run self collision code on the snake if the snakes are the same
if (snake == testSnake)
{
if (snake.SelfCollision())
{
return(true); // if snake collided with itself, the snake definetly collided
}
}
else
{
foreach (BodySegment segment in snake.bodySegments) // check for collision with all body segments of other snakes
{
if ((testSnake.Collided(segment.picBox) & ContinuousSnake.HEAD_COLLISION) != 0)
{
return(true); // snake head collided with another snake so return true
}
}
}
}
// if the function reached this point, not collision occured
return(false);
}
void CheckFollowerCollision(ContinuousSnake snake) // kill snake whos head collides with enemy
{
foreach (EnemyFollower enemy in followers)
{
if ((snake.Collided(enemy.picBox) & ContinuousSnake.HEAD_COLLISION) != 0) // kill the snake if head collision
{
Death(snake);
}
}
}
// check for projectile collision with snake
void CheckProjectileCollision(ContinuousSnake snake)
{
foreach (Projectile projectile in projectiles)
{
if (projectile.finalized)
{
continue; // don't check the projectile if its finalized
}
// only kill the snake if it collides with the snake head
if ((snake.Collided(projectile.picBox) & ContinuousSnake.HEAD_COLLISION) != 0)
{
Death(snake);
}
}
}
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--;
}
}
}
// run mysterbox handler
void RunMysteryBoxes(ContinuousSnake snake)
{
List <MysteryBox> removeQueue = new List <MysteryBox>();
foreach (MysteryBox box in mysteryBoxes) // check all boxes for collision
{
if (snake.Collided(box.picBox) != 0)
{
box.Invoke(snake); // run the box's function if collided
}
if (box.Finalized)
{
removeQueue.Add(box);
}
}
foreach (MysteryBox box in removeQueue)
{
mysteryBoxes.Remove(box);
}
RunMysterySpawners();
}
// check for body collision with snake
public bool BodyCollision(ContinuousSnake snake)
{
return((snake.Collided(Bounds) & ContinuousSnake.BODY_COLLISION) > 0); // true if body collision occurred
}
// check for head collisions with snake
public bool HeadCollision(ContinuousSnake snake)
{
return((snake.Collided(Bounds) & ContinuousSnake.HEAD_COLLISION) > 0); // true if head collision occurred
}
