public override void PreSolve(Contact contact, Manifold oldManifold)
{
base.PreSolve(contact, oldManifold);
Fixture fixtureA = contact.FixtureA;
Fixture fixtureB = contact.FixtureB;
if (fixtureA != m_platform && fixtureA != m_character)
return;
if (fixtureB != m_character && fixtureB != m_character)
return;
Vec2 position = m_character.Body.Position;
if (position.Y < m_top + m_radius - 3.0f * Box2DSettings.b2_linearSlop)
contact.Enabled = false;
}
// Implement contact listener.
public override void BeginContact(Contact contact)
{
Fixture fixtureA = contact.FixtureA;
Fixture fixtureB = contact.FixtureB;
if (fixtureA == m_sensor)
{
object userData = fixtureB.Body.UserData;
if (userData != null && userData is int)
m_touching[(int)fixtureB.Body.UserData] = true;
}
if (fixtureB == m_sensor)
{
object userData = fixtureA.Body.UserData;
if (userData != null && userData is int)
m_touching[(int)fixtureA.Body.UserData] = true;
}
}
public override void PreSolve(Contact contact, Manifold oldManifold)
{
Manifold manifold = contact.Manifold;
if (manifold.PointCount == 0)
return;
Fixture fixtureA = contact.FixtureA;
Fixture fixtureB = contact.FixtureB;
PointState[] state1 = new PointState[Box2DSettings.b2_maxManifoldPoints],
state2 = new PointState[Box2DSettings.b2_maxManifoldPoints];
Manifold.GetPointStates(ref state1, ref state2, ref oldManifold, ref manifold);
WorldManifold worldManifold = contact.WorldManifold;
for (int i = 0; i < manifold.PointCount && m_pointCount < ContactPoint.k_maxContactPoints; ++i)
{
m_points[m_pointCount].fixtureA = fixtureA;
m_points[m_pointCount].fixtureB = fixtureB;
m_points[m_pointCount].position = worldManifold.Points[i];
m_points[m_pointCount].normal = worldManifold.Normal;
m_points[m_pointCount].state = state2[i];
++m_pointCount;
}
}
public override void PostSolve(Contact contact, ContactImpulse impulse)
{
}
public override void EndContact(Contact contact)
{
}
public override void BeginContact(Contact contact)
{
}
public abstract void BeginContact(Contact contact);
public abstract void PreSolve(Contact contact, Manifold oldManifold);
public abstract void PostSolve(Contact contact, ContactImpulse impulse);
public abstract void EndContact(Contact contact);
public override void PostSolve(Contact contact, ContactImpulse impulse)
{
foreach (var x in m_breaks)
{
if (_jointsToRemove.Contains(x) || x.MaxForce == 0)
{
// The body already broke.
continue;
}
bool hasAnyFixtures = false;
foreach (var f in x.Joint.BodyA.Fixtures)
{
if (f == contact.FixtureA || f == contact.FixtureB)
{
hasAnyFixtures = true;
break;
}
}
if (!hasAnyFixtures)
{
foreach (var f in x.Joint.BodyB.Fixtures)
{
if (f == contact.FixtureA || f == contact.FixtureB)
{
hasAnyFixtures = true;
break;
}
}
if (!hasAnyFixtures)
continue;
}
// Should the body break?
int count = contact.Manifold.PointCount;
float maxImpulse = 0.0f;
for (int i = 0; i < count; ++i)
maxImpulse = Math.Max(maxImpulse, impulse.GetNormalImpulse(i));
if (maxImpulse > x.MaxForce)
{
// Flag the body for breaking.
_jointsToRemove.Add(x);
}
}
}