public override void Update(GameTime gameTime)
{
foreach (UnitParticle UP in unitParticles)
{
bool Below = true;
bool BelowRight = true;
bool BelowLeft = true;
bool Right = true;
bool Left = true;
switch (UP.particleType)
{
case ParticleType.Sand:
foreach (UnitParticle UP2 in unitParticles)
{
if (Below)
{
Below = Below & !(UP.Position.Y + 1 == UP2.Position.Y);
}
if (BelowRight)
{
BelowRight = BelowRight & !((UP.Position + Vector2.One) == UP2.Position);
}
if (BelowLeft)
{
BelowLeft = BelowLeft & !((UP.Position + Vector2.UnitY - Vector2.UnitX) == UP2.Position);
}
}
break;
case ParticleType.Water:
foreach (UnitParticle UP2 in unitParticles)
{
if (Below)
{
Below = Below & !(UP.Position + Vector2.UnitY == UP2.Position);
}
if (BelowRight)
{
BelowRight = BelowRight & !((UP.Position + Vector2.One) == UP2.Position);
}
if (BelowLeft)
{
BelowLeft = BelowLeft & !((UP.Position + Vector2.UnitY - Vector2.UnitX) == UP2.Position);
}
if (Right)
{
Right = Right & !(UP.Position + Vector2.UnitX == UP2.Position);
}
if (Left)
{
Left = Left & !(UP.Position - Vector2.UnitX == UP2.Position);
}
}
break;
default:
break;
}
if (Below)
{
UP.IncreaseUnitY();
}
else if (BelowRight)
{
UP.IncreaseUnitX();
UP.IncreaseUnitY();
}
else if (BelowLeft)
{
UP.DecreaseUnitX();
UP.IncreaseUnitY();
}
else if (Right && UP.particleType == ParticleType.Water)
{
UP.IncreaseUnitX();
}
else if (Left && UP.particleType == ParticleType.Water)
{
UP.DecreaseUnitX();
}
}
}