public SnakeBlockController(Coordinate _blockCoordinate, SnakeBlockController _nextBlock, GameObject _blockPrefab, SnakeModel _model)
{
blockCoordinate = _blockCoordinate;
nextBlock = _nextBlock;
model = _model;
block = GameObject.Instantiate(_blockPrefab, UtilityFunctions.GetTransformsForCoordinatesOnBoardPlane(blockCoordinate, 0.6f), Quaternion.identity);
}
public void CreateSnake()
{
SnakeBlockController body = new SnakeBlockController(new Coordinate(3, 4), null, snakeManger.snakeBlockPrefab, model);
body.SetBlockMaterialTo(snakeManger.snakeBodyMaterial);
model.snakeHead = new SnakeBlockController(new Coordinate(4, 4), body, snakeManger.snakeBlockPrefab, model);
model.snakeHead.SetBlockMaterialTo(snakeManger.snakeHeadMaterial);
model.snakeDirection = Direction.Up;
}
public bool CheckIfCoordinateOverlapsSnake(Coordinate _coordinate)
{
SnakeBlockController tempBlock = model.snakeHead;
bool overlaps = false;
while (tempBlock != null)
{
if (tempBlock.GetCoordinates() == _coordinate)
{
overlaps = true;
break;
}
tempBlock = tempBlock.nextBlock;
}
return(overlaps);
}
public void AdvanceOneStep()
{
int nxtBlockRow = 0;
int nxtBlockColumn = 0;
bool advanceSnake = false;
int boardRowCount = snakeManger.GetMapManager().BoardRows;
int boardColumnCount = snakeManger.GetMapManager().BoardColumns;
switch (model.snakeDirection)
{
//checks if snake gous out of the board
case Direction.Up:
{
if (model.snakeHead.GetCoordinates().row < boardRowCount - 1)
{
nxtBlockRow = model.snakeHead.GetCoordinates().row + 1;
advanceSnake = true;
}
else
{
snakeManger.GetScoreManager().TriggerGameOver();
}
nxtBlockColumn = model.snakeHead.GetCoordinates().column;
break;
}
case Direction.Down:
{
if (model.snakeHead.GetCoordinates().row > 0)
{
nxtBlockRow = model.snakeHead.GetCoordinates().row - 1;
advanceSnake = true;
}
else
{
snakeManger.GetScoreManager().TriggerGameOver();
}
nxtBlockColumn = model.snakeHead.GetCoordinates().column;
break;
}
case Direction.Left:
{
if (model.snakeHead.GetCoordinates().column > 0)
{
nxtBlockColumn = model.snakeHead.GetCoordinates().column - 1;
advanceSnake = true;
}
else
{
snakeManger.GetScoreManager().TriggerGameOver();
}
nxtBlockRow = model.snakeHead.GetCoordinates().row;
break;
}
case Direction.Right:
{
if (model.snakeHead.GetCoordinates().column < boardColumnCount - 1)
{
nxtBlockColumn = model.snakeHead.GetCoordinates().column + 1;
advanceSnake = true;
}
else
{
snakeManger.GetScoreManager().TriggerGameOver();
}
nxtBlockRow = model.snakeHead.GetCoordinates().row;
break;
}
}
//Checks if snake head collides with its own body
Coordinate newHeadCoardinate = new Coordinate(nxtBlockRow, nxtBlockColumn);
if (CheckIfCoordinateOverlapsSnake(newHeadCoardinate))
{
snakeManger.GetScoreManager().TriggerGameOver();
advanceSnake = false;
}
if (advanceSnake)
{
bool aboutToEatFood = false;
if (snakeManger.GetFoodManager().GetCurrentFoodCoordinates() == newHeadCoardinate)
{
aboutToEatFood = true;
}
model.snakeHead.SetBlockMaterialTo(snakeManger.snakeBodyMaterial);
model.snakeHead = new SnakeBlockController(new Coordinate(nxtBlockRow, nxtBlockColumn), model.snakeHead, snakeManger.snakeBlockPrefab, model);
model.snakeHead.SetBlockMaterialTo(snakeManger.snakeHeadMaterial);
if (aboutToEatFood)
{
snakeManger.GetScoreManager().AddUpScoreWithOffset(snakeManger.GetFoodManager().GetScoreForCurrentFoodParticle());
snakeManger.GetFoodManager().ResetFoodParticleProperties();
}
else
{
//no need to remove the last block if snake eats the food
SnakeBlockController tempBlock = model.snakeHead;
while (tempBlock.nextBlock.nextBlock != null)
{
tempBlock = tempBlock.nextBlock;
}
tempBlock.nextBlock.RemoveBlock();
tempBlock.nextBlock = null;
}
}
}
