public void CheckPlatfrom()
{
if (CExtends.IsIntersected(bullet.GetExtends(), platform.GetExtends()))
{
if (GameStarted)
{
bullet.InvertYSpeed();
}
}
}
public void CheckBorder(Bullet bul)
{
CExtends extends = bul.GetExtends();
if ((extends.LeftX <= 0) || (extends.RightX >= FormWidth - 15))
{
bullet.InvertXSpeed();
}
if (extends.UpperY <= 0)
{
bullet.InvertYSpeed();
}
}
public bool CheckFault()
{
CExtends extends = bullet.GetExtends();
if (extends.UpperY >= FormHeight)
{
Lose();
return(true);
}
else
{
return(false);
}
}
public static bool IsIntersected(CExtends one, CExtends two)
{
if ((one.BottomY >= two.UpperY) && (one.UpperY <= two.BottomY))
{
if ((one.RightX >= two.LeftX) && (one.LeftX <= two.RightX))
{
return(true);
}
else
{
return(false);
}
}
else
{
return(false);
}
}
public bool CheckCollision(Block block)
{
if (CExtends.IsIntersected(block.GetExtends(), bullet.GetExtends()))
{
CExtends BlockExtends = block.GetExtends();
CExtends BulletExtends = bullet.GetExtends();
Point bulpt = BulletExtends.Center;
Point blockpt = BlockExtends.Center;
int dx = blockpt.X - (bulpt.X - bullet.SpeedX);
int dy = blockpt.Y - (bulpt.Y - bullet.SpeedY);
float tga = 1;
try
{
tga = Math.Abs(dx) / Math.Abs(dy);
}
catch (DivideByZeroException)
{
}
if (tga >= 1)
{
bullet.InvertXSpeed();
}
// if (tga==1)
// {
// if (bul.XSpeedCorrected == false) bul.SpeedX = -bul.SpeedX;
// bul.XSpeedCorrected = true;
// if (bul.YSpeedCorrected == false) bul.SpeedY = -bul.SpeedY;
// bul.YSpeedCorrected = true;
// }
if (tga < 1)
{
bullet.InvertYSpeed();
}
return(true);
}
else
{
return(false);
}
}
public CExtends GetExtends()
{
CExtends ext = new CExtends(PosX, PosY, Width, Height);
return(ext);
}