public SnakeMovePosition(SnakeMovePosition previousSnakeMovePosition, Vector2Int gridPosition, Direction direction)
{
this.previousSnakeMovePosition = previousSnakeMovePosition;
this.gridPosition = gridPosition;
this.direction = direction;
}
private void HandleGridMovement()
{
gridMoveTimer += Time.deltaTime;
if (gridMoveTimer >= gridMoveTimerMax)
{
gridMoveTimer -= gridMoveTimerMax;
SnakeMovePosition previousSnakeMovePosition = null;
if (snakeMovePositionList.Count > 0)
{
previousSnakeMovePosition = snakeMovePositionList[0];
}
SnakeMovePosition snakeMovePosition = new SnakeMovePosition(previousSnakeMovePosition, gridPosition, gridMoveDirection);
snakeMovePositionList.Insert(0, snakeMovePosition);
Vector2Int gridMoveDirectionVector;
switch (gridMoveDirection)
{
default:
case Direction.Right: gridMoveDirectionVector = new Vector2Int(1, 0); break;
case Direction.Left: gridMoveDirectionVector = new Vector2Int(-1, 0); break;
case Direction.Up: gridMoveDirectionVector = new Vector2Int(0, 1); break;
case Direction.Down: gridMoveDirectionVector = new Vector2Int(0, -1); break;
}
gridPosition += gridMoveDirectionVector;
gridPosition = levelGrid.ValidateGridPosition(gridPosition);
bool snakeAteFood = levelGrid.TrySnakeEatFood(gridPosition);
if (snakeAteFood)
{
snakeBodySize++;
CreateSnakeBody();
}
if (snakeMovePositionList.Count >= snakeBodySize + 1)
{
snakeMovePositionList.RemoveAt(snakeMovePositionList.Count - 1);
}
UpdateSnakeBodyParts();
foreach (SnakeBodyPart snakeBodyPart in snakeBodyPartList)
{
Vector2Int snakeBodyPartGridPosition = snakeBodyPart.GetGridPosition();
if (gridPosition == snakeBodyPartGridPosition)
{
//Game Over!!!
state = State.Dead;
}
}
transform.position = new Vector3(gridPosition.x, gridPosition.y);
transform.eulerAngles = new Vector3(0, 0, GetAngleFromVector(gridMoveDirectionVector) - 90);
}
}
public void SetSnakeMovePosition(SnakeMovePosition snakeMovePosition)
{
this.snakeMovePosition = snakeMovePosition;
transform.position = new Vector3(snakeMovePosition.GetGridPosition().x, snakeMovePosition.GetGridPosition().y);
float angle;
switch (snakeMovePosition.GetDirection())
{
default:
case Direction.Up:
switch (snakeMovePosition.GetPreviousDirection())
{
default:
angle = 0;
break;
case Direction.Left:
angle = 45;
transform.position = new Vector3(transform.position.x + .2f, transform.position.y + .2f);
break;
case Direction.Right:
angle = -45;
transform.position = new Vector3(transform.position.x - .2f, transform.position.y + .2f);
break;
}
break;
case Direction.Down:
switch (snakeMovePosition.GetPreviousDirection())
{
default:
angle = 180;
break;
case Direction.Left:
angle = -45;
transform.position = new Vector3(transform.position.x + .2f, transform.position.y - .2f);
break;
case Direction.Right:
angle = 45;
transform.position = new Vector3(transform.position.x - .2f, transform.position.y - .2f);
break;
}
break;
case Direction.Left:
switch (snakeMovePosition.GetPreviousDirection())
{
default:
angle = -90;
break;
case Direction.Down:
angle = -45;
transform.position = new Vector3(transform.position.x - .2f, transform.position.y + .2f);
break;
case Direction.Up:
angle = 45;
transform.position = new Vector3(transform.position.x - .2f, transform.position.y - .2f);
break;
}
break;
case Direction.Right:
switch (snakeMovePosition.GetPreviousDirection())
{
default:
angle = 90;
break;
case Direction.Down:
angle = 45;
transform.position = new Vector3(transform.position.x + .2f, transform.position.y + .2f);
break;
case Direction.Up:
angle = -45;
transform.position = new Vector3(transform.position.x + .2f, transform.position.y - .1f);
break;
}
break;
}
transform.eulerAngles = new Vector3(0, 0, angle);
}
