public void MoveSnake(int rowMovement, int blockMovement)
{
int snakeHead_RowPosition = mainSnake.snakeHead.snakeRowPosition;
int snakeHead_BlockPosition = mainSnake.snakeHead.snakeBlockPosition;
SnakeNode newSnakeHead = new SnakeNode(snakeHead_RowPosition + (rowMovement), snakeHead_BlockPosition + (blockMovement));
if (newSnakeHead.snakeRowPosition == mainSnake.snakeHead.next.snakeRowPosition && newSnakeHead.snakeBlockPosition == mainSnake.snakeHead.next.snakeBlockPosition)
{
return;
}
if (newSnakeHead.snakeRowPosition == 0 || newSnakeHead.snakeRowPosition == MATRIX.GetLength(0) - 1 || newSnakeHead.snakeBlockPosition == 0 || newSnakeHead.snakeBlockPosition == MATRIX.GetLength(1) - 1)
{
isGameOver = true;
}
newSnakeHead.next = mainSnake.snakeHead;
mainSnake.snakeHead = newSnakeHead;
MATRIX[mainSnake.snakeHead.snakeRowPosition, mainSnake.snakeHead.snakeBlockPosition] = SNAKEHEAD;
MATRIX[mainSnake.snakeHead.next.snakeRowPosition, mainSnake.snakeHead.next.snakeBlockPosition] = SNAKEBODY;
SnakeNode TEMP_snakePointer = mainSnake.snakeHead;
SnakeNode PREV_TEMP_snakePointer = null;
while (TEMP_snakePointer.next != null)
{
PREV_TEMP_snakePointer = TEMP_snakePointer;
TEMP_snakePointer = TEMP_snakePointer.next;
if (mainSnake.snakeHead.snakeRowPosition == TEMP_snakePointer.snakeRowPosition && mainSnake.snakeHead.snakeBlockPosition == TEMP_snakePointer.snakeBlockPosition)
{
isGameOver = true;
return;
}
}
if (mainSnake.snakeHead.snakeRowPosition == TEMP_snakePointer.snakeRowPosition && mainSnake.snakeHead.snakeBlockPosition == TEMP_snakePointer.snakeBlockPosition)
{
isGameOver = true;
}
if (mainSnake.snakeHead.snakeRowPosition == APPLE_COORDINATES[0] && mainSnake.snakeHead.snakeBlockPosition == APPLE_COORDINATES[1])
{
GenerateApplePosition();
score++;
}
else
{
MATRIX[TEMP_snakePointer.snakeRowPosition, TEMP_snakePointer.snakeBlockPosition] = BOARD_SPACE;
PREV_TEMP_snakePointer.next = null;
}
}
// Creates the snake by creating a new SnakeNode. The snakeHead variable points to this new Node.
public void CreateSnake(int startingRowPosition, int startingBlockPosition)
{
SnakeNode newSnake = new SnakeNode(startingRowPosition, startingBlockPosition);
snakeHead = newSnake;
SnakeNode defaultSnakeBody_1 = new SnakeNode(startingRowPosition + 1, startingBlockPosition);
SnakeNode defaultSnakeBody_2 = new SnakeNode(startingRowPosition + 2, startingBlockPosition);
snakeHead.next = defaultSnakeBody_1;
snakeHead.next.next = defaultSnakeBody_2;
}
// GenerateSnake() creates the snake object.
private void GenerateSnake()
{
int rowValue = MATRIX.GetLength(0) / 2;
int blockValue = MATRIX.GetLength(1) / 2;
mainSnake.CreateSnake(rowValue, blockValue);
SnakeNode TEMP_snakePointer = mainSnake.snakeHead;
MATRIX[TEMP_snakePointer.snakeRowPosition, TEMP_snakePointer.snakeBlockPosition] = SNAKEHEAD;
while (TEMP_snakePointer.next != null)
{
// MATRIX[TEMP_snakePointer.snakeRowPosition, TEMP_snakePointer.snakeBlockPosition] = SNAKEBODY;
TEMP_snakePointer = TEMP_snakePointer.next;
MATRIX[TEMP_snakePointer.snakeRowPosition, TEMP_snakePointer.snakeBlockPosition] = SNAKEBODY;
}
MATRIX[TEMP_snakePointer.snakeRowPosition, TEMP_snakePointer.snakeBlockPosition] = SNAKEBODY;
}
public void AddSnakeLength(SnakeNode newSnakeBody)
{
newSnakeBody = snakeHead.next;
snakeHead.next = newSnakeBody;
}