示例#1
0
        public Snake()
        {
            Score     = 0;
            Direction = Utility.Movements.right;
            segments  = new List <SnakeSegment>();
            segments.Add(new SnakeSegment(4, 2, true, false)); // head
            segments.Add(new SnakeSegment(3, 2, false, false));
            segments.Add(new SnakeSegment(2, 2, false, false));


            Board.PlaceFood(segments); // place initial piece of food
        }
示例#2
0
        public void Move()
        {
            //foreach (SnakeSegment a in segments)
            //{
            //    System.Windows.Forms.MessageBox.Show(Board.GetPositionStatus(a.X, a.Y).ToString()  );
            //}


            int snakeLength = segments.Count;

            for (int i = snakeLength - 1; i >= 0; i--) // Move each segment starting at END OF TAIL
            {
                if (!segments[i].IsNew)                // move it if not new
                {
                    if (segments[i].IsHead)
                    {
                        SegmentToDraw = segments[i];

                        switch (Direction)
                        {
                        case Utility.Movements.up:
                            // TODO: boundary check
                            if (segments[i].Y <= 0)
                            {
                                endGame(methodOfDeath.wall);
                            }


                            Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
                            segments[i].Y -= 1;


                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.snake)
                            {
                                endGame(methodOfDeath.snake);
                            }


                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.food)
                            {
                                Score++;
                                GrowSegment();
                                Board.PlaceFood(segments);
                            }

                            break;

                        case Utility.Movements.down:
                            // TODO: boundary check
                            if (segments[i].Y >= Board.PlayfieldHeight - 1)
                            {
                                endGame(methodOfDeath.wall);
                            }

                            Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
                            //segments[i].X = segments[i].X;
                            segments[i].Y += 1;
                            //Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);

                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.snake)
                            {
                                endGame(methodOfDeath.snake);
                            }

                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.food)
                            {
                                Score++;
                                GrowSegment();
                                Board.PlaceFood(segments);
                            }

                            break;

                        case Utility.Movements.left:
                            // TODO: boundary check
                            if (segments[i].X <= 0)
                            {
                                endGame(methodOfDeath.wall);
                            }

                            Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
                            segments[i].X -= 1;
                            //segments[i].Y = segments[i].Y;
                            //Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);

                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.snake)
                            {
                                endGame(methodOfDeath.snake);
                            }

                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.food)
                            {
                                Score++;
                                GrowSegment();
                                Board.PlaceFood(segments);
                            }

                            break;

                        case Utility.Movements.right:
                            // TODO: boundary check
                            if (segments[i].X >= Board.PlayfieldWidth - 1)
                            {
                                endGame(methodOfDeath.wall);
                            }

                            Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
                            segments[i].X += 1;
                            //segments[i].Y = segments[i].Y;
                            //Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);

                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.snake)
                            {
                                endGame(methodOfDeath.snake);
                            }

                            if (Board.GetPositionStatus(segments[i].X, segments[i].Y) == Board.PositionStates.food)
                            {
                                Score++;
                                GrowSegment();
                                Board.PlaceFood(segments);
                            }

                            break;

                        default:
                            break;
                        }
                    }
                    else // not head
                    { // move to same spot as leading segment
                        Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);
                        segments[i].X = segments[i - 1].X;
                        segments[i].Y = segments[i - 1].Y;
                        //Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.snake);

                        // for board drawing
                        if (i == snakeLength - 1) // first loop through -- this is the end of tail piece so erase it
                        {
                            SegmentToErase = segments[i];
                        }
                    }
                }
                else // was new so it didn't move - mark it not new for next time
                {
                    segments[i].IsNew = false;
                    //Board.SetPositionStatus(segments[i].X, segments[i].Y, Board.PositionStates.empty);

                    // Don't mark it to erase since it didn't move
                    SegmentToErase = null;
                }

                foreach (SnakeSegment seg in segments)
                {
                    Board.SetPositionStatus(seg.X, seg.Y, Board.PositionStates.snake);
                }
            }
        }