Method Step

tests/cpp-tests/Source/Box2DTestBed/test.cpp:287–453

}

void Test::Step(Settings& settings)
{
    float timeStep = settings.m_hertz > 0.0f ? 1.0f / settings.m_hertz : float(0.0f);

    if (settings.m_pause)
    {
        if (settings.m_singleStep)
        {
            settings.m_singleStep = 0;
        }
        else
        {
            timeStep = 0.0f;
        }

        DrawString(5, m_textLine, "****PAUSED****");
    }

    uint32 flags = 0;
    flags += settings.m_drawShapes * b2Draw::e_shapeBit;
    flags += settings.m_drawJoints * b2Draw::e_jointBit;
    flags += settings.m_drawAABBs * b2Draw::e_aabbBit;
    flags += settings.m_drawCOMs * b2Draw::e_centerOfMassBit;
    g_debugDraw.SetFlags(flags);

    m_world->SetAllowSleeping(settings.m_enableSleep);
    m_world->SetWarmStarting(settings.m_enableWarmStarting);
    m_world->SetContinuousPhysics(settings.m_enableContinuous);
    m_world->SetSubStepping(settings.m_enableSubStepping);

    m_pointCount = 0;

    m_world->Step(timeStep, settings.m_velocityIterations, settings.m_positionIterations);

    m_world->DebugDraw();

    if (timeStep > 0.0f)
    {
        ++m_stepCount;
    }

    if (settings.m_drawStats)
    {
        int32 bodyCount    = m_world->GetBodyCount();
        int32 contactCount = m_world->GetContactCount();
        int32 jointCount   = m_world->GetJointCount();
        DrawString(5, m_textLine, "bodies/contacts/joints = %d/%d/%d", bodyCount, contactCount, jointCount);

        int32 proxyCount = m_world->GetProxyCount();
        int32 height     = m_world->GetTreeHeight();
        int32 balance    = m_world->GetTreeBalance();
        float quality    = m_world->GetTreeQuality();
        DrawString(5, m_textLine, "proxies/height/balance/quality = %d/%d/%d/%g", proxyCount, height, balance, quality);
    }

    // Track maximum profile times
    {
        const b2Profile& p         = m_world->GetProfile();