private bool CollidedAWall(uint fieldSize, ref BodyPart head)
{
if (head.x < 0)
{
head.move(new BodyPart((int)fieldSize - 1, head.y));
}
else if (head.x >= fieldSize)
{
head.move(new BodyPart(0, head.y));
}
else if (head.y < 0)
{
head.move(new BodyPart(head.x, (int)fieldSize - 1));
}
else if (head.y >= fieldSize)
{
head.move(new BodyPart(head.x, 0));
}
/* if (head.x < 0 || head.x >= fieldSize || head.y < 0 || head.y >= fieldSize)
* return true;*/
return(false);
}
private void Move(ref BodyPart head, Diractions?dir)
{
int xOffset = 0, yOffset = 0;
if (dir == null)
{
dir = direction;
}
switch (dir)
{
case Diractions.Up:
if (direction == Diractions.Down) //Tried to move up while moving down
{
goto case Diractions.Down;
}
yOffset = -1;
direction = Diractions.Up;
break;
case Diractions.Down:
if (direction == Diractions.Up) //Tried to move down while moving up
{
goto case Diractions.Up;
}
yOffset = 1;
direction = Diractions.Down;
break;
case Diractions.Left:
if (direction == Diractions.Right) //Tried to move left while moving right
{
goto case Diractions.Right;
}
xOffset = -1;
direction = Diractions.Left;
break;
case Diractions.Right:
if (direction == Diractions.Left) //Tried to move right while moving left
{
goto case Diractions.Left;
}
xOffset = 1;
direction = Diractions.Right;
break;
}
head.move(xOffset, yOffset);
}