That looks dangerous...

PhysX is nicely capable of clamping for us without those nasty hacks, so
let's allow PhysX to do it for us. Hopefully, this will keep anything too
insane from happening when I disable the framerate limit.

Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp

@@ -390,8 +390,6 @@ plSimulationMgr* plSimulationMgr::GetInstance()
 
 plSimulationMgr::plSimulationMgr()
     : fSuspended(true)
-    , fMaxDelta(kDefaultMaxDelta)
-    , fStepSize(kDefaultStepSize)
     , fLOSDispatch(new plLOSDispatch())
     , fSoundMgr(new plPhysicsSoundMgr)
     , fLog(nil)
@@ -450,16 +448,20 @@ NxScene* plSimulationMgr::GetScene(plKey world)
 
     if (!scene)
     {
-        uint32_t maxSteps = (uint32_t)ceil(fMaxDelta / fStepSize);
-
         NxSceneDesc sceneDesc;
         sceneDesc.gravity.set(0, 0, -32.174049f);
         sceneDesc.userTriggerReport = &gSensorReport;
         sceneDesc.userContactReport = &gContactReport;
-        sceneDesc.maxTimestep = fStepSize;
-        sceneDesc.maxIter = maxSteps;
         scene = fSDK->createScene(sceneDesc);
 
+        // See "Advancing The Simulation State" in the PhysX SDK Documentation
+        // This will cause PhysX to only update for our step size. If we call simulate
+        // faster than that, PhysX will return immediately. If we call it slower than that,
+        // PhysX will do some extra steps for us (isn't that nice?).
+        // Anyway, this should be a good way to make us independent of the framerate.
+        // If not, I blame the usual suspects (Tye, eap, etc...)
+        scene->setTiming(kDefaultStepSize);
+
         // Most physicals use the default friction and restitution values, so we
         // make them the default.
         NxMaterial* mat = scene->getMaterialFromIndex(0);
@@ -602,12 +604,6 @@ void plSimulationMgr::Advance(float delSecs)
     if (fSuspended)
         return;
 
-    if (delSecs > fMaxDelta)
-    {
-        if (fExtraProfile)
-            Log("Step clamped from %f to limit of %f", delSecs, fMaxDelta);
-        delSecs = fMaxDelta;
-    }
     plProfile_IncCount(StepLen, (int)(delSecs*1000));
 
 #ifndef PLASMA_EXTERNAL_RELASE
@@ -771,26 +767,6 @@ hsBool plSimulationMgr::MsgReceive(plMessage *msg)
 //
 /////////////////////////////////////////////////////////////////
 
-void plSimulationMgr::SetMaxDelta(float maxDelta)
-{
-    fMaxDelta = maxDelta;
-}
-
-float plSimulationMgr::GetMaxDelta() const
-{
-    return fMaxDelta;
-}
-
-void plSimulationMgr::SetStepsPerSecond(int stepsPerSecond)
-{
-    fStepSize = 1.0f / (float)stepsPerSecond;
-}
-
-int plSimulationMgr::GetStepsPerSecond()
-{
-    return (int)((1.0 / fStepSize) + 0.5f); // round to nearest int
-}
-
 int plSimulationMgr::GetMaterialIdx(NxScene* scene, float friction, float restitution)
 {
     if (friction == 0.5f && restitution == 0.5f)

Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.h

@@ -115,20 +115,6 @@ protected:
     plSimulationMgr();
     virtual ~plSimulationMgr();
 
-    // Set the maximum amount of time (in seconds) that the physics will advance
-    // between frames. If a frame-to-frame delta is bigger than this, we'll
-    // clamp it to this value.
-    // WARNING: animation doesn't do this, so if we clamp the time animated
-    // physicals and the avatar may move at a faster rate than usual.
-    void SetMaxDelta(float maxDelta);
-    float GetMaxDelta() const;
-    
-    // Set the number of steps per second that physics will advance.
-    // The more steps per second, the less fallthough and more accurate
-    // simulation response.
-    void SetStepsPerSecond(int stepsPerSecond);
-    int GetStepsPerSecond();
-
     // Walk through the synchronization requests and send them as appropriate.
     void IProcessSynchs();
 
@@ -151,9 +137,6 @@ protected:
     // but nothing will move.
     bool fSuspended;
 
-    float fMaxDelta;
-    float fStepSize;
-
     // A utility class to keep track of a request for a physical synchronization.
     // These requests must pass a certain criteria (see the code for the latest)
     // before they are actually either sent over the network or rejected.