public static bool IsColliding(this GameObject obj, GameObject obj2)
{
if (obj != obj2 && obj.Solid && obj2.Solid) // dont check collisions with yourself nor with non solid objects
{
if (obj.Sprite.GetRectangle().Intersects(obj2.Sprite.GetRectangle())) //check if rectangles collide
{
if (IsCollidingUnoptimized(obj.Sprite, obj2.Sprite)) //check pixel collision
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
else
{
return false;
}
}
public Grid(Vector2 position, int side, int squareSide)
{
_side = side;
_squareSide = squareSide;
_position = position;
Objects = new GameObject[_side, _side];
_positions = new Vector2[_side, _side];
// Calculate square positions:
float yPosition = _position.Y;
for (int i = 0; i < _side; i++)
{
for (int j = 0; j < _side; j++)
{
_positions[i, j] = new Vector2(_squareSide * j + _position.X, yPosition);
}
yPosition += _squareSide;
}
}
public Vector2 GetXY(GameObject obj)
{
int hashCode = obj.GetHashCode();
for (int i = 0; i < _side; i++)
{
for (int j = 0; j < _side; j++)
{
if (Objects[i, j] != null && Objects[i, j].GetHashCode() == hashCode)
return new Vector2(i, j);
}
}
throw new Exception("Object isn't in the grid");
}
public GameObject AddObject(int x, int y, GameObject obj)
{
obj.Sprite.Position = _positions[x, y] + obj.Sprite.Origin;
Objects[x, y] = obj;
return obj;
}
//Changes the position of the object to the position in argument
public void SetPosition(GameObject obj, Vector2 newPosition)
{
if (newPosition.X >= _side || newPosition.Y >= _side
|| newPosition.X < 0 || newPosition.Y < 0)
{
throw new Exception("Position is outside of the grid");
}
Vector2 oldPosition = GetXY(obj);
Objects[(int)oldPosition.X, (int)oldPosition.Y] = null;
if (Objects[(int)newPosition.X, (int)newPosition.Y] == null)
{
Objects[(int)newPosition.X, (int)newPosition.Y] = obj;
}
else
{
throw new Exception("Space occupied");
}
}
//Changes the position of the object by adding and/or subtracting from its coordinates
public void RelativeSetPosition(GameObject obj, Vector2 modifier)
{
Vector2 modifiedPosition = GetXY(obj) + modifier;
SetPosition(obj, modifiedPosition);
}
public static bool IsRectangleColliding(this GameObject obj, GameObject obj2)
{
if (obj != obj2 && obj.Solid && obj2.Solid) // dont check collisions with yourself
{
if (obj.Sprite.GetRectangle().Intersects(obj2.Sprite.GetRectangle())) //check if rectangles collide
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
public static void Delete(GameObject obj)
{
Objects.Remove(obj);
obj.Detach();
}
public static GameObject Create(GameObject obj)
{
Objects.Add(obj);
obj.Attach();
return obj;
}
