+ void push(LayerP layer)
+ {
+ ASSERT(layer && "cannot push null layer");
+ mStack.push_front(layer);
+ logDebug("stack: %d [pushed %X]", mStack.size(), layer.get());
+ layer->pushed(mInterface);
+ }
+
+ LayerP pop()
+ {
+ bool fixIt = false;
+ if (mStack.begin() == mStackIt) fixIt = true;
+
+ LayerP layer = mStack.front();
+ mStack.pop_front();
+ logDebug("stack: %d [popped %X]", mStack.size(), layer.get());
+ layer->popped(mInterface);
+
+ if (fixIt) mStackIt = --mStack.begin();
+
+ return layer;
+ }
+
+ LayerP pop(Layer* layer)
+ {
+ bool fixIt = false;
+
+ std::list<LayerP> layers;
+
+ std::list<LayerP>::iterator it;
+ for (it = mStack.begin(); it != mStack.end(); ++it)
+ {
+ layers.push_back(*it);
+
+ if (it == mStackIt) fixIt = true;
+
+ if ((*it).get() == layer)
+ {
+ ++it;
+ mStack.erase(mStack.begin(), it);
+
+ for (it = layers.begin(); it != layers.end(); ++it)
+ {
+ (*it)->popped(mInterface);
+ logDebug("stack: %d [popped %X]", mStack.size(), (*it).get());
+ }
+
+ if (fixIt) mStackIt = --mStack.begin();
+
+ return layers.back();
+ }
+ }
+
+ return LayerP();
+ }
+
+ void clear()
+ {
+ mStack.clear();
+ mStackIt = mStack.begin();
+ logDebug("stack: 0 [cleared]");
+ }
+
+
+ void capFps()
+ {
+ if (mMaxFps < mTimestep)
+ {
+ logWarning("capping maximum fps to timestep (%f)", mTimestep);
+ mMaxFps = mTimestep;
+ }
+ }
+
+
+ Engine& mInterface;
+ VideoP mVideo;
+ Dispatch mDispatch;
+
+ std::list<LayerP> mStack;
+ std::list<LayerP>::iterator mStackIt;
+
+ Scalar mTimestep;
+ Scalar mMaxFps;
+
+ int mFps;
+ bool mPrintFps;