From 09fc50948bff04e319dedc646c17e92be0f16ae5 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Thu, 25 Apr 2013 00:03:27 -0700
Subject: [PATCH] Add methods to disable and get info for a layer

---
 apps/openmw/mwrender/animation.cpp | 54 ++++++++++++++++++++++--------
 apps/openmw/mwrender/animation.hpp | 16 ++++++++-
 2 files changed, 55 insertions(+), 15 deletions(-)

diff --git a/apps/openmw/mwrender/animation.cpp b/apps/openmw/mwrender/animation.cpp
index 5838b1ff3..36fa1197d 100644
--- a/apps/openmw/mwrender/animation.cpp
+++ b/apps/openmw/mwrender/animation.cpp
@@ -225,6 +225,8 @@ void Animation::updateActiveControllers()
                 break;
             }
         }
+        if(ctrls == NULL)
+            continue;
 
         /* Check if any objectlists are active on subsequent layers. Include
          * those layers if not.
@@ -239,7 +241,6 @@ void Animation::updateActiveControllers()
             }
         }
 
-        assert(ctrls != NULL);
         std::vector<Ogre::Controller<Ogre::Real> >::const_iterator ctrl(ctrls->begin());
         for(;ctrl != ctrls->end();ctrl++)
         {
@@ -525,21 +526,9 @@ bool Animation::play(const std::string &groupname, const std::string &start, con
 
     bool movinganim = false;
     bool foundanim = false;
-    if(groupname.empty())
-    {
-        // Do not allow layer 0 to be disabled
-        assert(layeridx != 0);
 
-        mLayer[layeridx].mGroupName.clear();
-        mLayer[layeridx].mTextKeys = NULL;
-        mLayer[layeridx].mControllers = NULL;
-        mLayer[layeridx].mLoopCount = 0;
-        mLayer[layeridx].mPlaying = false;
-
-        foundanim = true;
-    }
     /* Look in reverse; last-inserted source has priority. */
-    else for(std::vector<ObjectInfo>::reverse_iterator iter(mObjects.rbegin());iter != mObjects.rend();iter++)
+    for(std::vector<ObjectInfo>::reverse_iterator iter(mObjects.rbegin());iter != mObjects.rend();iter++)
     {
         NifOgre::ObjectList &objlist = iter->mObjectList;
         if(objlist.mTextKeys.size() == 0)
@@ -602,6 +591,43 @@ bool Animation::play(const std::string &groupname, const std::string &start, con
     return movinganim;
 }
 
+void Animation::disable(size_t layeridx)
+{
+    if(mLayer[layeridx].mGroupName.empty())
+        return;
+
+    for(std::vector<ObjectInfo>::iterator iter(mObjects.begin());iter != mObjects.end();iter++)
+        iter->mActiveLayers &= ~(1<<layeridx);
+
+    mLayer[layeridx].mGroupName.clear();
+    mLayer[layeridx].mTextKeys = NULL;
+    mLayer[layeridx].mControllers = NULL;
+    mLayer[layeridx].mLoopCount = 0;
+    mLayer[layeridx].mPlaying = false;
+
+    updateActiveControllers();
+}
+
+bool Animation::getInfo(size_t layeridx, float *complete, std::string *groupname, std::string *start, std::string *stop) const
+{
+    if(mLayer[layeridx].mGroupName.empty())
+    {
+        if(complete) *complete = 0.0f;
+        if(groupname) *groupname = "";
+        if(start) *start = "";
+        if(stop) *stop = "";
+        return false;
+    }
+
+    if(complete) *complete = (mLayer[layeridx].mTime - mLayer[layeridx].mStartKey->first) /
+                             (mLayer[layeridx].mStopKey->first - mLayer[layeridx].mStartKey->first);
+    if(groupname) *groupname = mLayer[layeridx].mGroupName;
+    if(start) *start = mLayer[layeridx].mStartKey->second.substr(mLayer[layeridx].mGroupName.size()+2);
+    if(stop) *stop = mLayer[layeridx].mStopKey->second.substr(mLayer[layeridx].mGroupName.size()+2);
+    return true;
+}
+
+
 Ogre::Vector3 Animation::runAnimation(float duration)
 {
     Ogre::Vector3 movement(0.0f);
diff --git a/apps/openmw/mwrender/animation.hpp b/apps/openmw/mwrender/animation.hpp
index f349dd71f..4d342e0b1 100644
--- a/apps/openmw/mwrender/animation.hpp
+++ b/apps/openmw/mwrender/animation.hpp
@@ -141,8 +141,22 @@ public:
      */
     bool play(const std::string &groupname, const std::string &start, const std::string &stop, float startpoint, size_t loops);
 
-    virtual Ogre::Vector3 runAnimation(float timepassed);
+    /** Stops and removes the animation from the given layer. */
+    void disable(size_t layeridx);
 
+    /** Gets info about the given animation layer.
+     * \param layeridx Layer index to get info about.
+     * \param complete Stores completion amount (0 = at start key, 0.5 = half way between start and stop keys), etc.
+     * \param groupname Stores animation group being played.
+     * \param start Stores the start key
+     * \param stop Stores the stop key
+     * \return True if an animation is active on the layer, false otherwise.
+     */
+    bool getInfo(size_t layeridx, float *complete=NULL, std::string *groupname=NULL, std::string *start=NULL, std::string *stop=NULL) const;
+
+    virtual Ogre::Vector3 runAnimation(float duration);
+
+    /* Returns if there's an animation playing on the given layer. */
     bool isPlaying(size_t layeridx) const
     { return mLayer[layeridx].mPlaying; }