public PressureBody(Shape s, float mass, float gasPressure, float edgeSpringK, float edgeSpringDamp, float shapeSpringK, float shapeSpringDamp)
: base(s, mass, edgeSpringK, edgeSpringDamp, shapeSpringK, shapeSpringDamp)
{
pressure = gasPressure;
normal_list = new Vector2[count];
edgelength_list = new float[count];
}
public Body(Shape shape, float mass)
{
this.base_shape = shape;
this.curr_shape = shape.Clone();
this.count = shape.count;
this.pointmass_list = new PointMass[shape.count];
for (int i = 0; i < shape.count; i++)
pointmass_list[i] = new PointMass(shape.points[i], mass);
this.bitmaskx = new Bitmask();
this.bitmasky = new Bitmask();
}
public void AddPhysicsBodies()
{
Shape groundShape = new Shape();
groundShape.Begin(true);
groundShape.Add(new Vector2(-15, 0));
groundShape.Add(new Vector2(-15, 1));
groundShape.Add(new Vector2(15, 1));
groundShape.Add(new Vector2(15, 0));
groundShape.End();
ground = new SpringBody(groundShape, float.PositiveInfinity, 0, 0, 0, 0);
ground.is_static = true;
ground.position.Y = -1;
physics.Add(ground);
float scale = 0.5f;
Shape boxShape = new Shape();
boxShape.Begin(true);
boxShape.Add(new Vector2(0, 0));
boxShape.Add(new Vector2(0, scale * 0.5f));
boxShape.Add(new Vector2(scale * 0.5f, scale * 0.5f));
boxShape.Add(new Vector2(scale * 0.5f, 0));
boxShape.End();
for (int i = 0; i < 50; i++)
{
bubble = new PressureBody(boxShape, 1, 1, 1300, 20, 1000, 20);
bubble.position.Y = i * scale * 0.5f;
bubble.position.X = 0;
physics.Add(bubble);
}
Shape circleShape = new Shape();
circleShape.Begin(true);
for (int i = 320; i >= 0; i -= 40)
{
circleShape.Add(new Vector2((float)Math.Cos(i / 180f * Math.PI) * 0.25f, (float)Math.Sin(i / 180f * Math.PI) * 0.25f));
}
circleShape.End();
bubble = new PressureBody(circleShape, 1, 1, 130, 20, 130, 20);
bubble.position.Y = 5;
bubble.position.X = 5;
physics.Add(bubble);
}
public void RenderShape(Shape shape)
{
Color color = new Color(0.5f, 0, 0.5f, 0.3f);
int i;
for (i = 0; i < shape.points.Length - 1; i++)
{
linebatch.Add(new LineVertex(new Vector3(shape.points[i].X, shape.points[i].Y, 0), color));
linebatch.Add(new LineVertex(new Vector3(shape.points[i + 1].X, shape.points[i + 1].Y, 0), color));
}
linebatch.Add(new LineVertex(new Vector3(shape.points[i].X, shape.points[i].Y, 0), color));
linebatch.Add(new LineVertex(new Vector3(shape.points[0].X, shape.points[0].Y, 0), color));
}
public Shape Clone()
{
Shape clone = new Shape();
clone.count = this.points.Length;
clone.points = new Vector2[this.points.Length];
this.points.CopyTo(clone.points,0);
return clone;
}
