// Resolves soma task for snake to go ahead.
private void ItsTimeToDisplay(object sender, EventArgs e)
{
if (!isStarted || isReStarted)
{
return;
}
// clac the head next position
switch (snake.HeadDirection)
{
case SnakeHeadDirectionEnum.Up:
snake.HeadPosition.RowPosition -= 1;
break;
case SnakeHeadDirectionEnum.Down:
snake.HeadPosition.RowPosition += 1;
break;
case SnakeHeadDirectionEnum.Left:
snake.HeadPosition.ColumnPosition -= 1;
break;
case SnakeHeadDirectionEnum.Right:
snake.HeadPosition.ColumnPosition += 1;
break;
case SnakeHeadDirectionEnum.InPlace:
break;
default:
break;
}
//check if the snake crash into the wall
if (snake.HeadPosition.RowPosition < 0 || snake.HeadPosition.RowPosition > RowCount - 1 ||
snake.HeadPosition.ColumnPosition < 0 || snake.HeadPosition.ColumnPosition > ColumnCount - 1)
{
EndOfGame();
return;
}
//check if the snake crash into itself
if (snake.Tail.Any(x => x.RowPosition == snake.HeadPosition.RowPosition && x.ColumnPosition == snake.HeadPosition.ColumnPosition))
{
EndOfGame();
return;
}
//check if the snake aet a food
//if (foods.FoodPositions.Any(x=>x.RowPosition == snake.HeadPosition.RowPosition && x.ColumnPosition == snake.HeadPosition.ColumnPosition)) {
var foodToDelete = foods.Remove(snake.HeadPosition.RowPosition, snake.HeadPosition.ColumnPosition);
if (foodToDelete != null)
{
EraseFromCanvas(foodToDelete.Paint);
foodsHaveEatenCount += 1;
View.NumberOfMealsTextBlock.Text = foodsHaveEatenCount.ToString();
snake.Length += 1;
GetNewFood();
}
var paintHead = ShowSnakeHead(snake.HeadPosition.RowPosition, snake.HeadPosition.ColumnPosition);
//we have to delete the old head position befor we save the new head position.
EraseFromCanvas(snake.HeadPosition.Paint);
//we save the new head position into the HeadPosition.
snake.HeadPosition.Paint = paintHead;
// head of snake will change to neck !
var neckPaint = ShowSnakeNeck(snake.HeadPositionOld.RowPosition, snake.HeadPositionOld.ColumnPosition);
//var neckPaint = ShowSnakeNeck(snake.HeadPosition.RowPositionOld, snake.HeadPosition.ColumnPositionOld);
//var neckPaint = ShowSnakeNeck(neck.RowPosition, neck.ColumnPosition);
snake.Tail.Add(new CanvasPosition(snake.HeadPositionOld.RowPosition, snake.HeadPositionOld.ColumnPosition, neckPaint));
//snake.Tail.Add(new CanvasPosition(snake.HeadPosition.RowPositionOld, snake.HeadPosition.ColumnPositionOld, neckPaint));
//snake.Tail.Add(new CanvasPosition(neck.RowPosition, neck.ColumnPosition, neckPaint));
if (snake.Tail.Count < snake.Length)
{
}
else
{
var end = snake.Tail[0];
ShowEmptyArenaPosition(end.RowPosition, end.ColumnPosition, end.Paint);
snake.Tail.RemoveAt(0);
}
}
private void ItsTimeForDisplay(object sender, EventArgs e)
{
if (!isStarted || isGameOver)
{
return;
}
//Meg kell jegyezni, hogy a kigyo feje hol van
//Ez hibas megoldas, mert a currentPosition ugyanarra az objektumra fog mutatni, azaz nem taroltuk el az eredeti erteket!!!
//var currentPosition = snake.HeadPosition;
//Igy mar helyesen mukodik a regi ertek mentese egy uj peldanyba
var neck = new ArenaPosition(snake.HeadPosition.RowPosition, snake.HeadPosition.ColumnPosition);
//Ki kell szamolni a kovetkezo poziciot a fej iranya alapjan
switch (snake.Heading)
{
case SnakeHeadingEnum.Up:
snake.HeadPosition.RowPosition -= 1;
break;
case SnakeHeadingEnum.Down:
snake.HeadPosition.RowPosition += 1;
break;
case SnakeHeadingEnum.Left:
snake.HeadPosition.ColumnPosition -= 1;
break;
case SnakeHeadingEnum.Right:
snake.HeadPosition.ColumnPosition += 1;
break;
case SnakeHeadingEnum.InPlace:
break;
default:
break;
}
//Megvan a fej uj pozicioja. Meg a megjelenites elott ellenorizni kell, hogy:
//falnak mentunk-e?
if (snake.HeadPosition.RowPosition < 0 ||
snake.HeadPosition.RowPosition > RowCount - 1 ||
snake.HeadPosition.ColumnPosition < 0 ||
snake.HeadPosition.ColumnPosition > ColumnCount - 1)
{//Jatek vege
EndOfGame();
//Mivel vege a jateknak, nem csinalunk mar semmit
return;
}
//Sajat farkunkba haraptunk -e?
//old school
//var collision = false;
//foreach (var tailitem in snake.Tail)
//{//Vegigmengyunk a farokpontokon, ellenorizzuk, hogy az uj fej poz, egyezik -e?
// if (tailitem.RowPosition == snake.HeadPosition.RowPosition && tailitem.ColumnPosition == snake.HeadPosition.ColumnPosition)
// {
// collision = true;
// }
//}
//if (collision)
//{//utkoztunk
// EndOfGame();
//}
//LINQ megoldas
if (snake.Tail.Any(x => x.RowPosition == snake.HeadPosition.RowPosition &&
x.ColumnPosition == snake.HeadPosition.ColumnPosition))
{//utkoztunk
EndOfGame();
return;
}
if (score < 1)
{
EndOfGame();
return;
}
//ellenorini, hogy ettunk -e? Kigyo feje vs etelek listaja
//megprobaljuk torolni az etelt az etelek kozul
var foodToDelete = foods.Remove(snake.HeadPosition.RowPosition, snake.HeadPosition.ColumnPosition);
if (foodToDelete != null)
{
//ettunk: a kigyo feje el fogja tuntetni az etelt a gridrol
//igy csak adminisztralnunk kell
ScoringAndPenalty(foodToDelete);
//egyek nojon a kigyo hossza
snake.Length++;
//es gyorsuljon is
StartPendulum();
//megjelenitjuk, hogy mennyit ettunk
View.NumberOfMealsTextBlock.Text = score.ToString();
//generalunk uj eteleket
GetNewFood(2);
}
ShowSnakeHead(snake.HeadPosition.RowPosition, snake.HeadPosition.ColumnPosition);
//A kigyo fejebol nyak lesz, ennek megfeleloen kell megjeleniteni
ShowSnakeNeck(neck.RowPosition, neck.ColumnPosition);
//Viszont, a farok adataihoz a nyaknak hozza kell adodnia
snake.Tail.Add(new ArenaPosition(neck.RowPosition, neck.ColumnPosition));
//Amig a kigyo hossza kisebb, mint aminek lennie kellene
if (snake.Tail.Count < snake.Length)
{//addig nem csinalunk semmit, hadd "novekedjen"
}
else
{//Mar megvan a teljes hossz, ne legyen hosszabb; a kigyo legveget torolni kell, ami az elso elem a listaban
//Meg torles elott kell az info, hogy melyik ArenaPozicioban van, hogy oda visszarakjuk az eredeti racsot
var end = snake.Tail[0];
ShowEmptyArenaPosition(end.RowPosition, end.ColumnPosition);
//majd az adatk kozul is toroljuk
snake.Tail.RemoveAt(0);
}
UpdateFoods();
}
