/// <summary>
/// Change state. Used force mode.
/// </summary>
/// <param name="newState"></param>
/// <param name="actorID">0 is "general actor"; 1,2,3,4 - players</param>
public void ChangeState(FieldSquareState newState, int actorID)
{
SquareState = newState;
ActorID = actorID;
switch (newState)
{
case FieldSquareState.Empty:
spriteRenderer.color = Color.white;
break;
case FieldSquareState.Fruit:
spriteRenderer.color = Color.red;
break;
case FieldSquareState.BodyOfSnake:
case FieldSquareState.HeadOfSnake:
spriteRenderer.color = ColorByActorID.Get(actorID);
break;
default:
spriteRenderer.color = Color.black;
break;
}
}
/// <summary>
/// Rewrite added position. Resolve collisions.
/// </summary>
/// <param name="fieldPosition"></param>
/// <param name="newState"></param>
/// <param name="actorID"></param>
public bool ChangeSquareOfField(Vector2Int fieldPosition, FieldSquareState newState, int actorID)
{
//Check borders
if (fieldPosition.x < 0 || fieldPosition.x > field.GetUpperBound(0) ||
fieldPosition.y < 0 || fieldPosition.y > field.GetUpperBound(0))
{
return(false);
}
if (newState == FieldSquareState.HeadOfSnake)
{
//Resolve collision
//It's a very simple method. It isn't perfect, but enough good.
//Possible non-critical inaccuracies (неточности) are extremely rare.
switch (field[fieldPosition.x, fieldPosition.y].SquareState)
{
case FieldSquareState.Fruit:
GameplayManager.FruitCollected(actorID, RandomFreePosition());
break;
case FieldSquareState.BodyOfSnake:
return(false);
case FieldSquareState.HeadOfSnake:
var otherActorID = field[fieldPosition.x, fieldPosition.y].ActorID;
GameplayManager.Snakes[otherActorID - 1].CreateRespawnEvent();
return(false);
}
}
field[fieldPosition.x, fieldPosition.y].ChangeState(newState, actorID);
return(true);
}