void Start()
{
// Move the Snake every 300ms
InvokeRepeating("Move", 0.3f, 0.3f);
snakeDirection = currentDirection.right;
}
void Update()
{
currentSnakeX = (int)transform.position.x;
currentSnakeY = (int)transform.position.y;
/* Debug.DrawLine(new Vector2(currentSnakeX, currentSnakeY), new Vector2(currentSnakeX + 1, currentSnakeY), Color.red);
* Debug.DrawLine(new Vector2(currentSnakeX, currentSnakeY), new Vector2(currentSnakeX, currentSnakeY + 1), Color.red);
* Debug.DrawLine(new Vector2(currentSnakeX, currentSnakeY), new Vector2(currentSnakeX, currentSnakeY - 1), Color.red); */
switch (snakeDirection)
{
case currentDirection.right:
// Move right
if (currentDistanceToFood(currentSnakeX + 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY + 1) &&
currentDistanceToFood(currentSnakeX + 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY - 1))
{
dir = Vector2.right;
snakeDirection = currentDirection.right;
}
// Move Down
else if (currentDistanceToFood(currentSnakeX, currentSnakeY - 1) < currentDistanceToFood(currentSnakeX + 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX, currentSnakeY - 1) < currentDistanceToFood(currentSnakeX, currentSnakeY + 1))
{
dir = -Vector2.up;
snakeDirection = currentDirection.down;
}
// Move Up
else if (currentDistanceToFood(currentSnakeX, currentSnakeY + 1) < currentDistanceToFood(currentSnakeX + 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX, currentSnakeY + 1) < currentDistanceToFood(currentSnakeX, currentSnakeY - 1))
{
dir = Vector2.up;
snakeDirection = currentDirection.up;
}
break;
case currentDirection.left:
// Move left
if (currentDistanceToFood(currentSnakeX - 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY + 1) &&
currentDistanceToFood(currentSnakeX - 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY - 1))
{
dir = Vector2.left;
snakeDirection = currentDirection.left;
}
// Move Up
else if (currentDistanceToFood(currentSnakeX, currentSnakeY + 1) < currentDistanceToFood(currentSnakeX - 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX, currentSnakeY + 1) < currentDistanceToFood(currentSnakeX, currentSnakeY - 1))
{
dir = Vector2.up;
snakeDirection = currentDirection.up;
}
// Move down
else if (currentDistanceToFood(currentSnakeX, currentSnakeY - 1) < currentDistanceToFood(currentSnakeX - 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX, currentSnakeY - 1) < currentDistanceToFood(currentSnakeX, currentSnakeY + 1))
{
dir = -Vector2.up;
snakeDirection = currentDirection.down;
}
break;
case currentDirection.up:
// Move left
if (currentDistanceToFood(currentSnakeX - 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY + 1) &&
currentDistanceToFood(currentSnakeX - 1, currentSnakeY) < currentDistanceToFood(currentSnakeX + 1, currentSnakeY))
{
dir = Vector2.left;
snakeDirection = currentDirection.left;
}
// Move Up
else if (currentDistanceToFood(currentSnakeX, currentSnakeY + 1) < currentDistanceToFood(currentSnakeX + 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX, currentSnakeY + 1) < currentDistanceToFood(currentSnakeX - 1, currentSnakeY))
{
dir = Vector2.up;
snakeDirection = currentDirection.up;
}
// Move right
else if (currentDistanceToFood(currentSnakeX + 1, currentSnakeY) < currentDistanceToFood(currentSnakeX - 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX + 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY + 1))
{
dir = Vector2.right;
snakeDirection = currentDirection.right;
}
break;
case currentDirection.down:
// Move left
if (currentDistanceToFood(currentSnakeX - 1, currentSnakeY) < currentDistanceToFood(currentSnakeX + 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX - 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY - 1))
{
dir = Vector2.left;
snakeDirection = currentDirection.left;
}
// Move Down
else if (currentDistanceToFood(currentSnakeX, currentSnakeY - 1) < currentDistanceToFood(currentSnakeX + 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX, currentSnakeY - 1) < currentDistanceToFood(currentSnakeX - 1, currentSnakeY))
{
dir = -Vector2.up;
snakeDirection = currentDirection.down;
}
// Move right
else if (currentDistanceToFood(currentSnakeX + 1, currentSnakeY) < currentDistanceToFood(currentSnakeX - 1, currentSnakeY) &&
currentDistanceToFood(currentSnakeX + 1, currentSnakeY) < currentDistanceToFood(currentSnakeX, currentSnakeY - 1))
{
dir = Vector2.right;
snakeDirection = currentDirection.right;
}
break;
}
}
Direction.Right => ((currentPosition.Item1, currentPosition.Item2), this.ApplyShipRight(currentDirection, instruction.Value)),