/// <summary>
/// Moves snake to new position according to direction of movement.
/// </summary>
/// <param name="direction">direction of movement</param>
/// <param name="extend">if true snake will be extended by one segment</param>
public void Move(Vector2Int direction)
{
var newHead = NextHeadPosition(direction);
if (!LogicElement.IsWalkable(board[newHead].Content))
{
return;
}
bool extend = LogicElement.IsExtend(board[newHead].Content);
body.AddLast(newHead);
if (extend)
{
// body.AddLast(newHead);
}
else
{
board[body.First.Value].SetTile(LogicElement.LogicElementType.None, true);
body.RemoveFirst();
}
UpdateSnakeState();
}
public Vector2Int GetDirection()
{
List <Vector2Int> avaliableDirections = new List <Vector2Int>
{
Vector2Int.left,
Vector2Int.right,
Vector2Int.up
};
List <Vector2Int> worldAvaliableDirections = new List <Vector2Int>();
//remove not walkable tiles
for (int i = 2; i >= 0; i--)
{
Vector2Int dir = avaliableDirections[i];
Vector2Int worldDir = HeadToBoard(this, dir);
//Debug.Log((Head + worldDir)+" "+ board[Head + worldDir].Content);
if (LogicElement.IsWalkable(board[Head + worldDir].Content))
{
worldAvaliableDirections.Add(worldDir);
}
}
//return if ther is no walkable tiles near
if (worldAvaliableDirections.Count == 0)
{
return(Vector2Int.zero);
}
worldAvaliableDirections = GetDirectionByModules(worldAvaliableDirections, this);
int randomValue = Mathf.RoundToInt(UnityEngine.Random.Range(0, worldAvaliableDirections.Count));
return(worldAvaliableDirections[randomValue]);
}