public Breakable()
{
// Ground body
{
BodyDef bd = new BodyDef();
Body ground = m_world.CreateBody(bd);
PolygonShape shape = new PolygonShape();
shape.SetAsEdge(new Vec2(-40.0f, 0.0f), new Vec2(40.0f, 0.0f));
ground.CreateFixture(shape, 0.0f);
}
// Breakable dynamic body
/*{
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(0.0f, 40.0f);
bd.Angle = (float)(0.25 * Math.PI);
var m_body1 = m_world.CreateBody(bd);
m_shape1.SetAsBox(0.5f, 0.5f, new Vec2(-0.5f, 0.0f), 0.0f);
var m_piece1 = m_body1.CreateFixture(m_shape1, 1.0f);
m_shape2.SetAsBox(0.5f, 0.5f, new Vec2(0.5f, 0.0f), 0.0f);
var m_piece2 = m_body1.CreateFixture(m_shape2, 1.0f);
m_breaks.Add(new BodyBreaker(m_world, m_body1, m_piece1, m_piece2));
}*/
float y = 2.0f;
for (int i = 0; i < 3; ++i)
{
PolygonShape bottom = new PolygonShape();
bottom.SetAsBox(1.5f, 0.15f);
PolygonShape left = new PolygonShape();
left.SetAsBox(0.15f, 2.7f, new Vec2(-1.45f, 2.35f), 0.2f);
PolygonShape right = new PolygonShape();
right.SetAsBox(0.15f, 2.7f, new Vec2(1.45f, 2.35f), -0.2f);
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(0.0f, y += 3.5f);
Body bottom_body = m_world.CreateBody(bd);
var bf = bottom_body.CreateFixture(bottom, 4.0f);
Body left_body = m_world.CreateBody(bd);
var lf = left_body.CreateFixture(left, 4.0f);
Body right_body = m_world.CreateBody(bd);
var rf = right_body.CreateFixture(right, 4.0f);
WeldJointDef wjd = new WeldJointDef();
wjd.Initialize(bottom_body, left_body, bd.Position);
wjd.CollideConnected = false;
WeldJoint wj1 = (WeldJoint)m_world.CreateJoint(wjd);
wjd.Initialize(bottom_body, right_body, bd.Position);
WeldJoint wj2 = (WeldJoint)m_world.CreateJoint(wjd);
m_breaks.Add(new BreakableJoint(wj1, 100));
m_breaks.Add(new BreakableJoint(wj2, 100));
}
}
public Cloth()
{
FixtureDef boxFix = new FixtureDef(new CircleShape(ClothBodySize), 0.2f);
BodyDef boxBod = new BodyDef(BodyType.Dynamic, Vec2.Empty);
boxFix.Filter.GroupIndex = -1;
boxBod.Position = new Vec2(-ClothTotalWidth / 2, 30);
Body bar;
{
bar = m_world.CreateBody(new BodyDef(BodyType.Static, new Vec2(-ClothBodySpacingWidth / 2, 30)));
var fd = new FixtureDef(new PolygonShape((ClothTotalWidth / 2) + ClothBodySpacingWidth, 0.25f));
fd.Filter.GroupIndex = -1;
bar.CreateFixture(fd);
}
for (int y = 0; y < ClothSegmentsHeight; ++y)
{
for (int x = 0; x < ClothSegmentsWidth; ++x)
{
Body body = m_world.CreateBody(boxBod);
boxBod.Position += new Vec2(ClothBodySpacingWidth, 0);
body.CreateFixture(boxFix);
if (y == 0)
{
WeldJointDef wjd = new WeldJointDef();
wjd.Initialize(body, bar, body.WorldCenter);
m_world.CreateJoint(wjd);
}
cloth[x, y] = body;
}
boxBod.Position = new Vec2(-ClothTotalWidth / 2, boxBod.Position.Y - ClothBodySpacingWidth);
}
for (int y = 0; y < ClothSegmentsHeight; ++y)
{
for (int x = 0; x < ClothSegmentsWidth; ++x)
{
Body leftBody, rightBody;
DistanceJointDef djd = new DistanceJointDef();
djd.FrequencyHz = 15 + Rand.RandomFloat(0, 6);
djd.DampingRatio = 0.11f + Rand.RandomFloat(0.01f, 0.15f);
// connect to right
if (x != ClothSegmentsWidth - 1)
{
leftBody = cloth[x, y];
rightBody = cloth[x + 1, y];
djd.Initialize(leftBody, rightBody, leftBody.WorldCenter, rightBody.WorldCenter);
m_world.CreateJoint(djd);
}
// connect to up
if (y != 0)
{
leftBody = cloth[x, y];
rightBody = cloth[x, y - 1];
djd.Initialize(leftBody, rightBody, leftBody.WorldCenter, rightBody.WorldCenter);
m_world.CreateJoint(djd);
}
}
}
}
public Cantilever()
{
Body ground;
{
ground = m_world.CreateBody(new BodyDef());
PolygonShape shape = new PolygonShape();
shape.SetAsEdge(new Vec2(-40.0f, 0.0f), new Vec2(40.0f, 0.0f));
ground.CreateFixture(shape, 0.0f);
}
{
PolygonShape shape = new PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.Shape = shape;
fd.Density = 20.0f;
WeldJointDef jd = new WeldJointDef();
Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(-14.5f + 1.0f * i, 5.0f);
Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
Vec2 anchor = new Vec2(-15.0f + 1.0f * i, 5.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
prevBody = body;
}
}
{
PolygonShape shape = new PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.Shape = shape;
fd.Density = 20.0f;
WeldJointDef jd = new WeldJointDef();
Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(-14.5f + 1.0f * i, 15.0f);
bd.InertiaScale = 10.0f;
Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
Vec2 anchor = new Vec2(-15.0f + 1.0f * i, 15.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
prevBody = body;
}
}
{
PolygonShape shape = new PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.Shape = shape;
fd.Density = 20.0f;
WeldJointDef jd = new WeldJointDef();
Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(-4.5f + 1.0f * i, 5.0f);
Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
if (i > 0)
{
Vec2 anchor = new Vec2(-5.0f + 1.0f * i, 5.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
}
prevBody = body;
}
}
{
PolygonShape shape = new PolygonShape();
shape.SetAsBox(0.5f, 0.125f);
FixtureDef fd = new FixtureDef();
fd.Shape = shape;
fd.Density = 20.0f;
WeldJointDef jd = new WeldJointDef();
Body prevBody = ground;
for (int i = 0; i < e_count; ++i)
{
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(5.5f + 1.0f * i, 10.0f);
bd.InertiaScale = 10.0f;
Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
if (i > 0)
{
Vec2 anchor = new Vec2(5.0f + 1.0f * i, 10.0f);
jd.Initialize(prevBody, body, anchor);
m_world.CreateJoint(jd);
}
prevBody = body;
}
}
for (int i = 0; i < 2; ++i)
{
Vec2[] vertices = new Vec2[]
{
new Vec2(-0.5f, 0.0f),
new Vec2(0.5f, 0.0f),
new Vec2(0.0f, 1.5f)
};
PolygonShape shape = new PolygonShape();
shape.Vertices = vertices;
FixtureDef fd = new FixtureDef();
fd.Shape = shape;
fd.Density = 1.0f;
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(-8.0f + 8.0f * i, 12.0f);
Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
}
for (int i = 0; i < 2; ++i)
{
CircleShape shape = new CircleShape();
shape.Radius = 0.5f;
FixtureDef fd = new FixtureDef();
fd.Shape = shape;
fd.Density = 1.0f;
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.Dynamic;
bd.Position = new Vec2(-6.0f + 6.0f * i, 10.0f);
Body body = m_world.CreateBody(bd);
body.CreateFixture(fd);
}
}