1 files changed, 118 insertions, 0 deletions
diff --git a/Runtime/Animation/AvatarPlayback.cpp b/Runtime/Animation/AvatarPlayback.cpp
new file mode 100644
index 0000000..1fd09af
--- /dev/null
+++ b/Runtime/Animation/AvatarPlayback.cpp
@@ -0,0 +1,118 @@
+#include "UnityPrefix.h"
+
+#include "AvatarPlayback.h"
+
+#include "Runtime/mecanim/animation/avatar.h"
+#include "Runtime/Serialize/Blobification/BlobWrite.h"
+#include "Runtime/Animation/MecanimUtility.h"
+#include "Runtime/Utilities/LogAssert.h"
+
+enum  { kMaxFrameCount = 10000};
+
+AvatarPlayback::AvatarPlayback(MemLabelId label) 
+:	m_Alloc(label),
+	m_FrameCount(-1),
+	m_CursorIndex(-1),
+	m_StartIndex(-1),
+	m_StopIndex(-1)
+{
+}
+
+void AvatarPlayback::Init(int frameCount)
+{
+	Clear();
+	if(frameCount > 0 )
+	{
+		if(frameCount > kMaxFrameCount )
+			WarningString("Could not allocate requested frameCount for Animator Recording. 10000 frames where allocated.");
+		
+		m_Frames.resize(min<unsigned int>(frameCount,kMaxFrameCount));	
+		m_FrameCount = m_Frames.size();		
+	}
+	else 
+	{
+		m_FrameCount = 0 ;
+	}
+	
+	m_CursorIndex = -1;
+	m_StartIndex = -1 ;
+	m_StopIndex = -1;
+}
+
+void AvatarPlayback::Clear()
+{
+	for(int i = 0 ; i < m_Frames.size() ; i++)
+	{
+		mecanim::animation::DestroyAvatarMemory(m_Frames[i].m_AvatarMemory, m_Alloc);
+	}
+	m_Frames.clear();
+}
+
+int AvatarPlayback::NextIndex(int index)
+{
+	return m_FrameCount > 0 ? (index+1)%m_FrameCount : index+1;
+}
+
+mecanim::animation::AvatarMemory* AvatarPlayback::PlayFrame(float time, float &effectiveTime)
+{	
+	int frameIndex = m_StopIndex;
+	bool  found = false;
+
+	if(m_StartIndex == -1)
+		return 0;
+
+	int i = m_StartIndex;
+	int prevIndex = i;
+
+	int endIndex = NextIndex(m_StopIndex);
+	do // at this point, we have a least one frame recorded
+	{
+		if(m_Frames[i].m_CurrentTime > time)
+		{
+			frameIndex = prevIndex;
+			found = true;
+		}
+
+		prevIndex = i;
+		i = NextIndex(i);
+	} while(i != endIndex && !found);
+	
+
+	effectiveTime = m_Frames[frameIndex].m_CurrentTime;
+	m_CursorIndex = frameIndex;
+	
+	return m_Frames[frameIndex].m_AvatarMemory;	
+}
+
+void AvatarPlayback::RecordFrame(float deltaTime, const mecanim::animation::AvatarMemory* srcMemory)
+{
+	if(m_FrameCount == -1)
+	{
+		WarningString("Could not record Animator. Frame allocation has failed.");
+		return;
+	}
+
+	AvatarFrame newFrame;
+	if(m_StartIndex != -1)
+		newFrame.m_CurrentTime = m_Frames[m_CursorIndex].m_CurrentTime + deltaTime;
+
+	size_t size=0;
+	newFrame.m_AvatarMemory = CopyBlob( *srcMemory, m_Alloc, size);
+	
+	m_CursorIndex = NextIndex(m_CursorIndex);
+	if(m_StartIndex == m_CursorIndex|| m_StartIndex == -1) // increment startIndex when the cursor is writing on it (the buffer is full)
+	{
+		if(m_StartIndex != -1)
+			mecanim::animation::DestroyAvatarMemory(m_Frames[m_CursorIndex].m_AvatarMemory, m_Alloc);
+		m_StartIndex = NextIndex(m_StartIndex);
+	}
+	m_StopIndex = m_CursorIndex;
+	if(m_FrameCount > 0)
+		m_Frames[m_CursorIndex] = newFrame;
+	else
+		m_Frames.push_back(newFrame);
+}
+
+float AvatarPlayback::CursorTime() {return m_CursorIndex != -1 ? m_Frames[m_CursorIndex].m_CurrentTime : -1;}
+float AvatarPlayback::StartTime() {return m_CursorIndex != -1 ? m_Frames[m_StartIndex].m_CurrentTime  : -1;}
+float AvatarPlayback::StopTime() {return m_CursorIndex != -1 ? m_Frames[m_StopIndex].m_CurrentTime  : -1;}