public FluidSystem2(Vec2 gravity, int maxParticleLimit, int worldWidth, int worldHeight)
{
_worldHeight = worldHeight;
_worldWidth = worldWidth;
Particles = new SpatialTable(worldWidth, worldHeight, CellSize);
MaxParticleLimit = maxParticleLimit;
Gravity = gravity;
Particles.Initialize();
}
public float dst2(Vec2 v)
{
return (v.X - X) * (v.X - X) + (v.Y - Y) * (v.Y - Y);
}
public float dot(Vec2 v)
{
return X * v.X + Y * v.Y;
}
public float dst(Vec2 v)
{
float x_d = v.X - X;
float y_d = v.Y - Y;
return (float)Math.Sqrt(x_d * x_d + y_d * y_d);
}
public Vec2 add(Vec2 v)
{
X += v.X;
Y += v.Y;
return this;
}
public void Sub(Vec2 v)
{
X -= v.X;
Y -= v.Y;
}
public void Set(Vec2 v)
{
X = v.X;
Y = v.Y;
}
public Particle(float posX, float posY)
{
Position = new Vec2(posX, posY);
}
public void AddParticle(Vec2 vec2)
{
Particles.Add(new Particle(vec2.X, vec2.Y));
}
private void CapVelocity(Vec2 v)
{
if (v.X > VelocityCap)
v.X = VelocityCap;
else if (v.X < -VelocityCap)
v.X = -VelocityCap;
if (v.Y > VelocityCap)
v.Y = VelocityCap;
else if (v.Y < -VelocityCap)
v.Y = -VelocityCap;
}