/// <summary>
/// Checkes if two game objects are in collision
/// </summary>
/// <param name="first">The first game object</param>
/// <param name="second">The second game object</param>
/// <returns>True if the objects are in collision, false - otherwise</returns>
private bool AreInCollision(GameObject first, GameObject second)
{
char[,] firstImage = first.GetImage();
char[,] secondImage = second.GetImage();
for (int firstRow = 0; firstRow < firstImage.GetLength(0); firstRow++)
{
for (int firstCol = 0; firstCol < firstImage.GetLength(1); firstCol++)
{
if (firstImage[firstRow, firstCol] != ' ')
{
for (int secondRow = 0; secondRow < secondImage.GetLength(0); secondRow++)
{
for (int secondCol = 0; secondCol < secondImage.GetLength(1); secondCol++)
{
if (secondImage[secondRow, secondCol] != ' ' && first.X + firstCol == second.X + secondCol && first.Y + firstRow == second.Y + secondRow)
{
return true;
}
}
}
}
}
}
return false;
}
/// <summary>
/// Determines if a given object is on a valid position
/// </summary>
/// <param name="obj">The object whose position to be checked for validity</param>
/// <returns>True - if the object is on valid position, false - otherwise</returns>
private bool isOnValidPosition(GameObject obj)
{
// if is outside the game field
if (obj.X < 0 || obj.X + obj.Width > this.renderer.Width ||
obj.Y < 0 || obj.Y + obj.Height > this.renderer.Height)
{
return false;
}
// if is over other object
for (int i = 0; i < this.staticObjects.Count; i++)
{
if (this.AreInCollision(this.currentFigure, this.staticObjects[i]))
{
return false;
}
}
return true;
}
public void NotifyBlockFellOver(GameObject blockObj)
{
if (this.fellOverBlocks.Contains(blockObj)) return;
this.fellOverBlocks.Add(blockObj);
this.blockFellOverTime = Time.GameTimer;
}